#include "llvm/Constants.h"
#include "llvm/Function.h"
#include "llvm/Intrinsics.h"
-#include "llvm/ParameterAttributes.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/raw_ostream.h"
+#include "llvm/DerivedTypes.h"
using namespace llvm;
-static cl::opt<bool> EnablePPCPreinc("enable-ppc-preinc",
+static bool CC_PPC_SVR4_Custom_Dummy(unsigned &ValNo, MVT &ValVT, MVT &LocVT,
+ CCValAssign::LocInfo &LocInfo,
+ ISD::ArgFlagsTy &ArgFlags,
+ CCState &State);
+static bool CC_PPC_SVR4_Custom_AlignArgRegs(unsigned &ValNo, MVT &ValVT,
+ MVT &LocVT,
+ CCValAssign::LocInfo &LocInfo,
+ ISD::ArgFlagsTy &ArgFlags,
+ CCState &State);
+static bool CC_PPC_SVR4_Custom_AlignFPArgRegs(unsigned &ValNo, MVT &ValVT,
+ MVT &LocVT,
+ CCValAssign::LocInfo &LocInfo,
+ ISD::ArgFlagsTy &ArgFlags,
+ CCState &State);
+
+static cl::opt<bool> EnablePPCPreinc("enable-ppc-preinc",
cl::desc("enable preincrement load/store generation on PPC (experimental)"),
cl::Hidden);
PPCTargetLowering::PPCTargetLowering(PPCTargetMachine &TM)
: TargetLowering(TM), PPCSubTarget(*TM.getSubtargetImpl()) {
-
+
setPow2DivIsCheap();
// Use _setjmp/_longjmp instead of setjmp/longjmp.
setUseUnderscoreSetJmp(true);
setUseUnderscoreLongJmp(true);
-
+
// Set up the register classes.
addRegisterClass(MVT::i32, PPC::GPRCRegisterClass);
addRegisterClass(MVT::f32, PPC::F4RCRegisterClass);
addRegisterClass(MVT::f64, PPC::F8RCRegisterClass);
-
+
// PowerPC has an i16 but no i8 (or i1) SEXTLOAD
- setLoadXAction(ISD::SEXTLOAD, MVT::i1, Promote);
- setLoadXAction(ISD::SEXTLOAD, MVT::i8, Expand);
+ setLoadExtAction(ISD::SEXTLOAD, MVT::i1, Promote);
+ setLoadExtAction(ISD::SEXTLOAD, MVT::i8, Expand);
setTruncStoreAction(MVT::f64, MVT::f32, Expand);
-
+
// PowerPC has pre-inc load and store's.
setIndexedLoadAction(ISD::PRE_INC, MVT::i1, Legal);
setIndexedLoadAction(ISD::PRE_INC, MVT::i8, Legal);
setIndexedStoreAction(ISD::PRE_INC, MVT::i32, Legal);
setIndexedStoreAction(ISD::PRE_INC, MVT::i64, Legal);
- // Shortening conversions involving ppcf128 get expanded (2 regs -> 1 reg)
- setConvertAction(MVT::ppcf128, MVT::f64, Expand);
- setConvertAction(MVT::ppcf128, MVT::f32, Expand);
// This is used in the ppcf128->int sequence. Note it has different semantics
// from FP_ROUND: that rounds to nearest, this rounds to zero.
setOperationAction(ISD::FP_ROUND_INREG, MVT::ppcf128, Custom);
setOperationAction(ISD::SDIVREM, MVT::i32, Expand);
setOperationAction(ISD::UDIVREM, MVT::i64, Expand);
setOperationAction(ISD::SDIVREM, MVT::i64, Expand);
-
+
// We don't support sin/cos/sqrt/fmod/pow
setOperationAction(ISD::FSIN , MVT::f64, Expand);
setOperationAction(ISD::FCOS , MVT::f64, Expand);
setOperationAction(ISD::FPOW , MVT::f32, Expand);
setOperationAction(ISD::FLT_ROUNDS_, MVT::i32, Custom);
-
+
// If we're enabling GP optimizations, use hardware square root
if (!TM.getSubtarget<PPCSubtarget>().hasFSQRT()) {
setOperationAction(ISD::FSQRT, MVT::f64, Expand);
setOperationAction(ISD::FSQRT, MVT::f32, Expand);
}
-
+
setOperationAction(ISD::FCOPYSIGN, MVT::f64, Expand);
setOperationAction(ISD::FCOPYSIGN, MVT::f32, Expand);
-
+
// PowerPC does not have BSWAP, CTPOP or CTTZ
setOperationAction(ISD::BSWAP, MVT::i32 , Expand);
setOperationAction(ISD::CTPOP, MVT::i32 , Expand);
setOperationAction(ISD::BSWAP, MVT::i64 , Expand);
setOperationAction(ISD::CTPOP, MVT::i64 , Expand);
setOperationAction(ISD::CTTZ , MVT::i64 , Expand);
-
+
// PowerPC does not have ROTR
setOperationAction(ISD::ROTR, MVT::i32 , Expand);
-
+ setOperationAction(ISD::ROTR, MVT::i64 , Expand);
+
// PowerPC does not have Select
setOperationAction(ISD::SELECT, MVT::i32, Expand);
setOperationAction(ISD::SELECT, MVT::i64, Expand);
setOperationAction(ISD::SELECT, MVT::f32, Expand);
setOperationAction(ISD::SELECT, MVT::f64, Expand);
-
+
// PowerPC wants to turn select_cc of FP into fsel when possible.
setOperationAction(ISD::SELECT_CC, MVT::f32, Custom);
setOperationAction(ISD::SELECT_CC, MVT::f64, Custom);
// PowerPC wants to optimize integer setcc a bit
setOperationAction(ISD::SETCC, MVT::i32, Custom);
-
+
// PowerPC does not have BRCOND which requires SetCC
setOperationAction(ISD::BRCOND, MVT::Other, Expand);
setOperationAction(ISD::BR_JT, MVT::Other, Expand);
-
+
// PowerPC turns FP_TO_SINT into FCTIWZ and some load/stores.
setOperationAction(ISD::FP_TO_SINT, MVT::i32, Custom);
// Support label based line numbers.
setOperationAction(ISD::DBG_STOPPOINT, MVT::Other, Expand);
setOperationAction(ISD::DEBUG_LOC, MVT::Other, Expand);
-
+
setOperationAction(ISD::EXCEPTIONADDR, MVT::i64, Expand);
setOperationAction(ISD::EHSELECTION, MVT::i64, Expand);
setOperationAction(ISD::EXCEPTIONADDR, MVT::i32, Expand);
setOperationAction(ISD::EHSELECTION, MVT::i32, Expand);
-
-
- // We want to legalize GlobalAddress and ConstantPool nodes into the
+
+
+ // We want to legalize GlobalAddress and ConstantPool nodes into the
// appropriate instructions to materialize the address.
setOperationAction(ISD::GlobalAddress, MVT::i32, Custom);
setOperationAction(ISD::GlobalTLSAddress, MVT::i32, Custom);
setOperationAction(ISD::GlobalTLSAddress, MVT::i64, Custom);
setOperationAction(ISD::ConstantPool, MVT::i64, Custom);
setOperationAction(ISD::JumpTable, MVT::i64, Custom);
-
+
// RET must be custom lowered, to meet ABI requirements.
setOperationAction(ISD::RET , MVT::Other, Custom);
// TRAP is legal.
setOperationAction(ISD::TRAP, MVT::Other, Legal);
-
+
+ // TRAMPOLINE is custom lowered.
+ setOperationAction(ISD::TRAMPOLINE, MVT::Other, Custom);
+
// VASTART needs to be custom lowered to use the VarArgsFrameIndex
setOperationAction(ISD::VASTART , MVT::Other, Custom);
-
- // VAARG is custom lowered with ELF 32 ABI
- if (TM.getSubtarget<PPCSubtarget>().isELF32_ABI())
+
+ // VAARG is custom lowered with the SVR4 ABI
+ if (TM.getSubtarget<PPCSubtarget>().isSVR4ABI())
setOperationAction(ISD::VAARG, MVT::Other, Custom);
else
setOperationAction(ISD::VAARG, MVT::Other, Expand);
-
+
// Use the default implementation.
setOperationAction(ISD::VACOPY , MVT::Other, Expand);
setOperationAction(ISD::VAEND , MVT::Other, Expand);
- setOperationAction(ISD::STACKSAVE , MVT::Other, Expand);
+ setOperationAction(ISD::STACKSAVE , MVT::Other, Expand);
setOperationAction(ISD::STACKRESTORE , MVT::Other, Custom);
setOperationAction(ISD::DYNAMIC_STACKALLOC, MVT::i32 , Custom);
setOperationAction(ISD::DYNAMIC_STACKALLOC, MVT::i64 , Custom);
// We want to custom lower some of our intrinsics.
setOperationAction(ISD::INTRINSIC_WO_CHAIN, MVT::Other, Custom);
-
+
+ // Comparisons that require checking two conditions.
+ setCondCodeAction(ISD::SETULT, MVT::f32, Expand);
+ setCondCodeAction(ISD::SETULT, MVT::f64, Expand);
+ setCondCodeAction(ISD::SETUGT, MVT::f32, Expand);
+ setCondCodeAction(ISD::SETUGT, MVT::f64, Expand);
+ setCondCodeAction(ISD::SETUEQ, MVT::f32, Expand);
+ setCondCodeAction(ISD::SETUEQ, MVT::f64, Expand);
+ setCondCodeAction(ISD::SETOGE, MVT::f32, Expand);
+ setCondCodeAction(ISD::SETOGE, MVT::f64, Expand);
+ setCondCodeAction(ISD::SETOLE, MVT::f32, Expand);
+ setCondCodeAction(ISD::SETOLE, MVT::f64, Expand);
+ setCondCodeAction(ISD::SETONE, MVT::f32, Expand);
+ setCondCodeAction(ISD::SETONE, MVT::f64, Expand);
+
if (TM.getSubtarget<PPCSubtarget>().has64BitSupport()) {
// They also have instructions for converting between i64 and fp.
setOperationAction(ISD::FP_TO_SINT, MVT::i64, Custom);
setOperationAction(ISD::FP_TO_UINT, MVT::i64, Expand);
setOperationAction(ISD::SINT_TO_FP, MVT::i64, Custom);
setOperationAction(ISD::UINT_TO_FP, MVT::i64, Expand);
- setOperationAction(ISD::FP_TO_UINT, MVT::i32, Expand);
-
+ // This is just the low 32 bits of a (signed) fp->i64 conversion.
+ // We cannot do this with Promote because i64 is not a legal type.
+ setOperationAction(ISD::FP_TO_UINT, MVT::i32, Custom);
+
// FIXME: disable this lowered code. This generates 64-bit register values,
// and we don't model the fact that the top part is clobbered by calls. We
// need to flag these together so that the value isn't live across a call.
//setOperationAction(ISD::SINT_TO_FP, MVT::i32, Custom);
-
- // To take advantage of the above i64 FP_TO_SINT, promote i32 FP_TO_UINT
- setOperationAction(ISD::FP_TO_UINT, MVT::i32, Promote);
} else {
// PowerPC does not have FP_TO_UINT on 32-bit implementations.
setOperationAction(ISD::FP_TO_UINT, MVT::i32, Expand);
// add/sub are legal for all supported vector VT's.
setOperationAction(ISD::ADD , VT, Legal);
setOperationAction(ISD::SUB , VT, Legal);
-
+
// We promote all shuffles to v16i8.
setOperationAction(ISD::VECTOR_SHUFFLE, VT, Promote);
AddPromotedToType (ISD::VECTOR_SHUFFLE, VT, MVT::v16i8);
AddPromotedToType (ISD::SELECT, VT, MVT::v4i32);
setOperationAction(ISD::STORE, VT, Promote);
AddPromotedToType (ISD::STORE, VT, MVT::v4i32);
-
+
// No other operations are legal.
setOperationAction(ISD::MUL , VT, Expand);
setOperationAction(ISD::SDIV, VT, Expand);
setOperationAction(ISD::LOAD , MVT::v4i32, Legal);
setOperationAction(ISD::SELECT, MVT::v4i32, Expand);
setOperationAction(ISD::STORE , MVT::v4i32, Legal);
-
+
addRegisterClass(MVT::v4f32, PPC::VRRCRegisterClass);
addRegisterClass(MVT::v4i32, PPC::VRRCRegisterClass);
addRegisterClass(MVT::v8i16, PPC::VRRCRegisterClass);
addRegisterClass(MVT::v16i8, PPC::VRRCRegisterClass);
-
+
setOperationAction(ISD::MUL, MVT::v4f32, Legal);
setOperationAction(ISD::MUL, MVT::v4i32, Custom);
setOperationAction(ISD::MUL, MVT::v8i16, Custom);
setOperationAction(ISD::SCALAR_TO_VECTOR, MVT::v4f32, Custom);
setOperationAction(ISD::SCALAR_TO_VECTOR, MVT::v4i32, Custom);
-
+
setOperationAction(ISD::BUILD_VECTOR, MVT::v16i8, Custom);
setOperationAction(ISD::BUILD_VECTOR, MVT::v8i16, Custom);
setOperationAction(ISD::BUILD_VECTOR, MVT::v4i32, Custom);
setOperationAction(ISD::BUILD_VECTOR, MVT::v4f32, Custom);
}
-
+
setShiftAmountType(MVT::i32);
- setSetCCResultContents(ZeroOrOneSetCCResult);
-
+ setBooleanContents(ZeroOrOneBooleanContent);
+
if (TM.getSubtarget<PPCSubtarget>().isPPC64()) {
setStackPointerRegisterToSaveRestore(PPC::X1);
setExceptionPointerRegister(PPC::X3);
setExceptionPointerRegister(PPC::R3);
setExceptionSelectorRegister(PPC::R4);
}
-
+
// We have target-specific dag combine patterns for the following nodes:
setTargetDAGCombine(ISD::SINT_TO_FP);
setTargetDAGCombine(ISD::STORE);
setTargetDAGCombine(ISD::BR_CC);
setTargetDAGCombine(ISD::BSWAP);
-
+
// Darwin long double math library functions have $LDBL128 appended.
if (TM.getSubtarget<PPCSubtarget>().isDarwin()) {
setLibcallName(RTLIB::COS_PPCF128, "cosl$LDBL128");
setLibcallName(RTLIB::REM_PPCF128, "fmodl$LDBL128");
setLibcallName(RTLIB::SIN_PPCF128, "sinl$LDBL128");
setLibcallName(RTLIB::SQRT_PPCF128, "sqrtl$LDBL128");
+ setLibcallName(RTLIB::LOG_PPCF128, "logl$LDBL128");
+ setLibcallName(RTLIB::LOG2_PPCF128, "log2l$LDBL128");
+ setLibcallName(RTLIB::LOG10_PPCF128, "log10l$LDBL128");
+ setLibcallName(RTLIB::EXP_PPCF128, "expl$LDBL128");
+ setLibcallName(RTLIB::EXP2_PPCF128, "exp2l$LDBL128");
}
computeRegisterProperties();
// Darwin passes everything on 4 byte boundary.
if (TM.getSubtarget<PPCSubtarget>().isDarwin())
return 4;
- // FIXME Elf TBD
+ // FIXME SVR4 TBD
return 4;
}
case PPCISD::SHL: return "PPCISD::SHL";
case PPCISD::EXTSW_32: return "PPCISD::EXTSW_32";
case PPCISD::STD_32: return "PPCISD::STD_32";
- case PPCISD::CALL_ELF: return "PPCISD::CALL_ELF";
- case PPCISD::CALL_Macho: return "PPCISD::CALL_Macho";
+ case PPCISD::CALL_SVR4: return "PPCISD::CALL_SVR4";
+ case PPCISD::CALL_Darwin: return "PPCISD::CALL_Darwin";
case PPCISD::MTCTR: return "PPCISD::MTCTR";
- case PPCISD::BCTRL_Macho: return "PPCISD::BCTRL_Macho";
- case PPCISD::BCTRL_ELF: return "PPCISD::BCTRL_ELF";
+ case PPCISD::BCTRL_Darwin: return "PPCISD::BCTRL_Darwin";
+ case PPCISD::BCTRL_SVR4: return "PPCISD::BCTRL_SVR4";
case PPCISD::RET_FLAG: return "PPCISD::RET_FLAG";
case PPCISD::MFCR: return "PPCISD::MFCR";
case PPCISD::VCMP: return "PPCISD::VCMP";
}
}
-
-MVT PPCTargetLowering::getSetCCResultType(const SDValue &) const {
+MVT PPCTargetLowering::getSetCCResultType(MVT VT) const {
return MVT::i32;
}
+/// getFunctionAlignment - Return the Log2 alignment of this function.
+unsigned PPCTargetLowering::getFunctionAlignment(const Function *F) const {
+ if (getTargetMachine().getSubtarget<PPCSubtarget>().isDarwin())
+ return F->hasFnAttr(Attribute::OptimizeForSize) ? 2 : 4;
+ else
+ return 2;
+}
//===----------------------------------------------------------------------===//
// Node matching predicates, for use by the tblgen matching code.
static bool isFloatingPointZero(SDValue Op) {
if (ConstantFPSDNode *CFP = dyn_cast<ConstantFPSDNode>(Op))
return CFP->getValueAPF().isZero();
- else if (ISD::isEXTLoad(Op.Val) || ISD::isNON_EXTLoad(Op.Val)) {
+ else if (ISD::isEXTLoad(Op.getNode()) || ISD::isNON_EXTLoad(Op.getNode())) {
// Maybe this has already been legalized into the constant pool?
if (ConstantPoolSDNode *CP = dyn_cast<ConstantPoolSDNode>(Op.getOperand(1)))
if (ConstantFP *CFP = dyn_cast<ConstantFP>(CP->getConstVal()))
/// isConstantOrUndef - Op is either an undef node or a ConstantSDNode. Return
/// true if Op is undef or if it matches the specified value.
-static bool isConstantOrUndef(SDValue Op, unsigned Val) {
- return Op.getOpcode() == ISD::UNDEF ||
- cast<ConstantSDNode>(Op)->getValue() == Val;
+static bool isConstantOrUndef(int Op, int Val) {
+ return Op < 0 || Op == Val;
}
/// isVPKUHUMShuffleMask - Return true if this is the shuffle mask for a
/// VPKUHUM instruction.
-bool PPC::isVPKUHUMShuffleMask(SDNode *N, bool isUnary) {
+bool PPC::isVPKUHUMShuffleMask(ShuffleVectorSDNode *N, bool isUnary) {
if (!isUnary) {
for (unsigned i = 0; i != 16; ++i)
- if (!isConstantOrUndef(N->getOperand(i), i*2+1))
+ if (!isConstantOrUndef(N->getMaskElt(i), i*2+1))
return false;
} else {
for (unsigned i = 0; i != 8; ++i)
- if (!isConstantOrUndef(N->getOperand(i), i*2+1) ||
- !isConstantOrUndef(N->getOperand(i+8), i*2+1))
+ if (!isConstantOrUndef(N->getMaskElt(i), i*2+1) ||
+ !isConstantOrUndef(N->getMaskElt(i+8), i*2+1))
return false;
}
return true;
/// isVPKUWUMShuffleMask - Return true if this is the shuffle mask for a
/// VPKUWUM instruction.
-bool PPC::isVPKUWUMShuffleMask(SDNode *N, bool isUnary) {
+bool PPC::isVPKUWUMShuffleMask(ShuffleVectorSDNode *N, bool isUnary) {
if (!isUnary) {
for (unsigned i = 0; i != 16; i += 2)
- if (!isConstantOrUndef(N->getOperand(i ), i*2+2) ||
- !isConstantOrUndef(N->getOperand(i+1), i*2+3))
+ if (!isConstantOrUndef(N->getMaskElt(i ), i*2+2) ||
+ !isConstantOrUndef(N->getMaskElt(i+1), i*2+3))
return false;
} else {
for (unsigned i = 0; i != 8; i += 2)
- if (!isConstantOrUndef(N->getOperand(i ), i*2+2) ||
- !isConstantOrUndef(N->getOperand(i+1), i*2+3) ||
- !isConstantOrUndef(N->getOperand(i+8), i*2+2) ||
- !isConstantOrUndef(N->getOperand(i+9), i*2+3))
+ if (!isConstantOrUndef(N->getMaskElt(i ), i*2+2) ||
+ !isConstantOrUndef(N->getMaskElt(i+1), i*2+3) ||
+ !isConstantOrUndef(N->getMaskElt(i+8), i*2+2) ||
+ !isConstantOrUndef(N->getMaskElt(i+9), i*2+3))
return false;
}
return true;
/// isVMerge - Common function, used to match vmrg* shuffles.
///
-static bool isVMerge(SDNode *N, unsigned UnitSize,
+static bool isVMerge(ShuffleVectorSDNode *N, unsigned UnitSize,
unsigned LHSStart, unsigned RHSStart) {
- assert(N->getOpcode() == ISD::BUILD_VECTOR &&
- N->getNumOperands() == 16 && "PPC only supports shuffles by bytes!");
+ assert(N->getValueType(0) == MVT::v16i8 &&
+ "PPC only supports shuffles by bytes!");
assert((UnitSize == 1 || UnitSize == 2 || UnitSize == 4) &&
"Unsupported merge size!");
-
+
for (unsigned i = 0; i != 8/UnitSize; ++i) // Step over units
for (unsigned j = 0; j != UnitSize; ++j) { // Step over bytes within unit
- if (!isConstantOrUndef(N->getOperand(i*UnitSize*2+j),
+ if (!isConstantOrUndef(N->getMaskElt(i*UnitSize*2+j),
LHSStart+j+i*UnitSize) ||
- !isConstantOrUndef(N->getOperand(i*UnitSize*2+UnitSize+j),
+ !isConstantOrUndef(N->getMaskElt(i*UnitSize*2+UnitSize+j),
RHSStart+j+i*UnitSize))
return false;
}
- return true;
+ return true;
}
/// isVMRGLShuffleMask - Return true if this is a shuffle mask suitable for
/// a VRGL* instruction with the specified unit size (1,2 or 4 bytes).
-bool PPC::isVMRGLShuffleMask(SDNode *N, unsigned UnitSize, bool isUnary) {
+bool PPC::isVMRGLShuffleMask(ShuffleVectorSDNode *N, unsigned UnitSize,
+ bool isUnary) {
if (!isUnary)
return isVMerge(N, UnitSize, 8, 24);
return isVMerge(N, UnitSize, 8, 8);
/// isVMRGHShuffleMask - Return true if this is a shuffle mask suitable for
/// a VRGH* instruction with the specified unit size (1,2 or 4 bytes).
-bool PPC::isVMRGHShuffleMask(SDNode *N, unsigned UnitSize, bool isUnary) {
+bool PPC::isVMRGHShuffleMask(ShuffleVectorSDNode *N, unsigned UnitSize,
+ bool isUnary) {
if (!isUnary)
return isVMerge(N, UnitSize, 0, 16);
return isVMerge(N, UnitSize, 0, 0);
/// isVSLDOIShuffleMask - If this is a vsldoi shuffle mask, return the shift
/// amount, otherwise return -1.
int PPC::isVSLDOIShuffleMask(SDNode *N, bool isUnary) {
- assert(N->getOpcode() == ISD::BUILD_VECTOR &&
- N->getNumOperands() == 16 && "PPC only supports shuffles by bytes!");
+ assert(N->getValueType(0) == MVT::v16i8 &&
+ "PPC only supports shuffles by bytes!");
+
+ ShuffleVectorSDNode *SVOp = cast<ShuffleVectorSDNode>(N);
+
// Find the first non-undef value in the shuffle mask.
unsigned i;
- for (i = 0; i != 16 && N->getOperand(i).getOpcode() == ISD::UNDEF; ++i)
+ for (i = 0; i != 16 && SVOp->getMaskElt(i) < 0; ++i)
/*search*/;
-
+
if (i == 16) return -1; // all undef.
-
- // Otherwise, check to see if the rest of the elements are consequtively
+
+ // Otherwise, check to see if the rest of the elements are consecutively
// numbered from this value.
- unsigned ShiftAmt = cast<ConstantSDNode>(N->getOperand(i))->getValue();
+ unsigned ShiftAmt = SVOp->getMaskElt(i);
if (ShiftAmt < i) return -1;
ShiftAmt -= i;
if (!isUnary) {
- // Check the rest of the elements to see if they are consequtive.
+ // Check the rest of the elements to see if they are consecutive.
for (++i; i != 16; ++i)
- if (!isConstantOrUndef(N->getOperand(i), ShiftAmt+i))
+ if (!isConstantOrUndef(SVOp->getMaskElt(i), ShiftAmt+i))
return -1;
} else {
- // Check the rest of the elements to see if they are consequtive.
+ // Check the rest of the elements to see if they are consecutive.
for (++i; i != 16; ++i)
- if (!isConstantOrUndef(N->getOperand(i), (ShiftAmt+i) & 15))
+ if (!isConstantOrUndef(SVOp->getMaskElt(i), (ShiftAmt+i) & 15))
return -1;
}
-
return ShiftAmt;
}
/// isSplatShuffleMask - Return true if the specified VECTOR_SHUFFLE operand
/// specifies a splat of a single element that is suitable for input to
/// VSPLTB/VSPLTH/VSPLTW.
-bool PPC::isSplatShuffleMask(SDNode *N, unsigned EltSize) {
- assert(N->getOpcode() == ISD::BUILD_VECTOR &&
- N->getNumOperands() == 16 &&
+bool PPC::isSplatShuffleMask(ShuffleVectorSDNode *N, unsigned EltSize) {
+ assert(N->getValueType(0) == MVT::v16i8 &&
(EltSize == 1 || EltSize == 2 || EltSize == 4));
-
+
// This is a splat operation if each element of the permute is the same, and
// if the value doesn't reference the second vector.
- unsigned ElementBase = 0;
- SDValue Elt = N->getOperand(0);
- if (ConstantSDNode *EltV = dyn_cast<ConstantSDNode>(Elt))
- ElementBase = EltV->getValue();
- else
- return false; // FIXME: Handle UNDEF elements too!
-
- if (cast<ConstantSDNode>(Elt)->getValue() >= 16)
- return false;
+ unsigned ElementBase = N->getMaskElt(0);
- // Check that they are consequtive.
- for (unsigned i = 1; i != EltSize; ++i) {
- if (!isa<ConstantSDNode>(N->getOperand(i)) ||
- cast<ConstantSDNode>(N->getOperand(i))->getValue() != i+ElementBase)
+ // FIXME: Handle UNDEF elements too!
+ if (ElementBase >= 16)
+ return false;
+
+ // Check that the indices are consecutive, in the case of a multi-byte element
+ // splatted with a v16i8 mask.
+ for (unsigned i = 1; i != EltSize; ++i)
+ if (N->getMaskElt(i) < 0 || N->getMaskElt(i) != (int)(i+ElementBase))
return false;
- }
-
- assert(isa<ConstantSDNode>(Elt) && "Invalid VECTOR_SHUFFLE mask!");
+
for (unsigned i = EltSize, e = 16; i != e; i += EltSize) {
- if (N->getOperand(i).getOpcode() == ISD::UNDEF) continue;
- assert(isa<ConstantSDNode>(N->getOperand(i)) &&
- "Invalid VECTOR_SHUFFLE mask!");
+ if (N->getMaskElt(i) < 0) continue;
for (unsigned j = 0; j != EltSize; ++j)
- if (N->getOperand(i+j) != N->getOperand(j))
+ if (N->getMaskElt(i+j) != N->getMaskElt(j))
return false;
}
-
return true;
}
/// isAllNegativeZeroVector - Returns true if all elements of build_vector
/// are -0.0.
bool PPC::isAllNegativeZeroVector(SDNode *N) {
- assert(N->getOpcode() == ISD::BUILD_VECTOR);
- if (PPC::isSplatShuffleMask(N, N->getNumOperands()))
- if (ConstantFPSDNode *CFP = dyn_cast<ConstantFPSDNode>(N))
+ BuildVectorSDNode *BV = cast<BuildVectorSDNode>(N);
+
+ APInt APVal, APUndef;
+ unsigned BitSize;
+ bool HasAnyUndefs;
+
+ if (BV->isConstantSplat(APVal, APUndef, BitSize, HasAnyUndefs, 32))
+ if (ConstantFPSDNode *CFP = dyn_cast<ConstantFPSDNode>(N->getOperand(0)))
return CFP->getValueAPF().isNegZero();
+
return false;
}
/// getVSPLTImmediate - Return the appropriate VSPLT* immediate to splat the
/// specified isSplatShuffleMask VECTOR_SHUFFLE mask.
unsigned PPC::getVSPLTImmediate(SDNode *N, unsigned EltSize) {
- assert(isSplatShuffleMask(N, EltSize));
- return cast<ConstantSDNode>(N->getOperand(0))->getValue() / EltSize;
+ ShuffleVectorSDNode *SVOp = cast<ShuffleVectorSDNode>(N);
+ assert(isSplatShuffleMask(SVOp, EltSize));
+ return SVOp->getMaskElt(0) / EltSize;
}
/// get_VSPLTI_elt - If this is a build_vector of constants which can be formed
unsigned Multiple = ByteSize/EltSize; // Number of BV entries per spltval.
SDValue UniquedVals[4];
assert(Multiple > 1 && Multiple <= 4 && "How can this happen?");
-
+
// See if all of the elements in the buildvector agree across.
for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i) {
if (N->getOperand(i).getOpcode() == ISD::UNDEF) continue;
// If the element isn't a constant, bail fully out.
if (!isa<ConstantSDNode>(N->getOperand(i))) return SDValue();
-
- if (UniquedVals[i&(Multiple-1)].Val == 0)
+
+ if (UniquedVals[i&(Multiple-1)].getNode() == 0)
UniquedVals[i&(Multiple-1)] = N->getOperand(i);
else if (UniquedVals[i&(Multiple-1)] != N->getOperand(i))
return SDValue(); // no match.
}
-
+
// Okay, if we reached this point, UniquedVals[0..Multiple-1] contains
// either constant or undef values that are identical for each chunk. See
// if these chunks can form into a larger vspltis*.
-
+
// Check to see if all of the leading entries are either 0 or -1. If
// neither, then this won't fit into the immediate field.
bool LeadingZero = true;
bool LeadingOnes = true;
for (unsigned i = 0; i != Multiple-1; ++i) {
- if (UniquedVals[i].Val == 0) continue; // Must have been undefs.
-
+ if (UniquedVals[i].getNode() == 0) continue; // Must have been undefs.
+
LeadingZero &= cast<ConstantSDNode>(UniquedVals[i])->isNullValue();
LeadingOnes &= cast<ConstantSDNode>(UniquedVals[i])->isAllOnesValue();
}
// Finally, check the least significant entry.
if (LeadingZero) {
- if (UniquedVals[Multiple-1].Val == 0)
+ if (UniquedVals[Multiple-1].getNode() == 0)
return DAG.getTargetConstant(0, MVT::i32); // 0,0,0,undef
- int Val = cast<ConstantSDNode>(UniquedVals[Multiple-1])->getValue();
+ int Val = cast<ConstantSDNode>(UniquedVals[Multiple-1])->getZExtValue();
if (Val < 16)
return DAG.getTargetConstant(Val, MVT::i32); // 0,0,0,4 -> vspltisw(4)
}
if (LeadingOnes) {
- if (UniquedVals[Multiple-1].Val == 0)
+ if (UniquedVals[Multiple-1].getNode() == 0)
return DAG.getTargetConstant(~0U, MVT::i32); // -1,-1,-1,undef
- int Val =cast<ConstantSDNode>(UniquedVals[Multiple-1])->getSignExtended();
+ int Val =cast<ConstantSDNode>(UniquedVals[Multiple-1])->getSExtValue();
if (Val >= -16) // -1,-1,-1,-2 -> vspltisw(-2)
return DAG.getTargetConstant(Val, MVT::i32);
}
-
+
return SDValue();
}
-
+
// Check to see if this buildvec has a single non-undef value in its elements.
for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i) {
if (N->getOperand(i).getOpcode() == ISD::UNDEF) continue;
- if (OpVal.Val == 0)
+ if (OpVal.getNode() == 0)
OpVal = N->getOperand(i);
else if (OpVal != N->getOperand(i))
return SDValue();
}
-
- if (OpVal.Val == 0) return SDValue(); // All UNDEF: use implicit def.
-
- unsigned ValSizeInBytes = 0;
+
+ if (OpVal.getNode() == 0) return SDValue(); // All UNDEF: use implicit def.
+
+ unsigned ValSizeInBytes = EltSize;
uint64_t Value = 0;
if (ConstantSDNode *CN = dyn_cast<ConstantSDNode>(OpVal)) {
- Value = CN->getValue();
- ValSizeInBytes = CN->getValueType(0).getSizeInBits()/8;
+ Value = CN->getZExtValue();
} else if (ConstantFPSDNode *CN = dyn_cast<ConstantFPSDNode>(OpVal)) {
assert(CN->getValueType(0) == MVT::f32 && "Only one legal FP vector type!");
Value = FloatToBits(CN->getValueAPF().convertToFloat());
- ValSizeInBytes = 4;
}
// If the splat value is larger than the element value, then we can never do
// this splat. The only case that we could fit the replicated bits into our
// immediate field for would be zero, and we prefer to use vxor for it.
if (ValSizeInBytes < ByteSize) return SDValue();
-
+
// If the element value is larger than the splat value, cut it in half and
// check to see if the two halves are equal. Continue doing this until we
// get to ByteSize. This allows us to handle 0x01010101 as 0x01.
while (ValSizeInBytes > ByteSize) {
ValSizeInBytes >>= 1;
-
+
// If the top half equals the bottom half, we're still ok.
if (((Value >> (ValSizeInBytes*8)) & ((1 << (8*ValSizeInBytes))-1)) !=
(Value & ((1 << (8*ValSizeInBytes))-1)))
// Properly sign extend the value.
int ShAmt = (4-ByteSize)*8;
int MaskVal = ((int)Value << ShAmt) >> ShAmt;
-
+
// If this is zero, don't match, zero matches ISD::isBuildVectorAllZeros.
if (MaskVal == 0) return SDValue();
static bool isIntS16Immediate(SDNode *N, short &Imm) {
if (N->getOpcode() != ISD::Constant)
return false;
-
- Imm = (short)cast<ConstantSDNode>(N)->getValue();
+
+ Imm = (short)cast<ConstantSDNode>(N)->getZExtValue();
if (N->getValueType(0) == MVT::i32)
- return Imm == (int32_t)cast<ConstantSDNode>(N)->getValue();
+ return Imm == (int32_t)cast<ConstantSDNode>(N)->getZExtValue();
else
- return Imm == (int64_t)cast<ConstantSDNode>(N)->getValue();
+ return Imm == (int64_t)cast<ConstantSDNode>(N)->getZExtValue();
}
static bool isIntS16Immediate(SDValue Op, short &Imm) {
- return isIntS16Immediate(Op.Val, Imm);
+ return isIntS16Immediate(Op.getNode(), Imm);
}
/// can be more efficiently represented with [r+imm].
bool PPCTargetLowering::SelectAddressRegReg(SDValue N, SDValue &Base,
SDValue &Index,
- SelectionDAG &DAG) {
+ SelectionDAG &DAG) const {
short imm = 0;
if (N.getOpcode() == ISD::ADD) {
if (isIntS16Immediate(N.getOperand(1), imm))
return false; // r+i
if (N.getOperand(1).getOpcode() == PPCISD::Lo)
return false; // r+i
-
+
Base = N.getOperand(0);
Index = N.getOperand(1);
return true;
} else if (N.getOpcode() == ISD::OR) {
if (isIntS16Immediate(N.getOperand(1), imm))
return false; // r+i can fold it if we can.
-
+
// If this is an or of disjoint bitfields, we can codegen this as an add
// (for better address arithmetic) if the LHS and RHS of the OR are provably
// disjoint.
APInt::getAllOnesValue(N.getOperand(0)
.getValueSizeInBits()),
LHSKnownZero, LHSKnownOne);
-
+
if (LHSKnownZero.getBoolValue()) {
DAG.ComputeMaskedBits(N.getOperand(1),
APInt::getAllOnesValue(N.getOperand(1)
}
}
}
-
+
return false;
}
/// a signed 16-bit displacement [r+imm], and if it is not better
/// represented as reg+reg.
bool PPCTargetLowering::SelectAddressRegImm(SDValue N, SDValue &Disp,
- SDValue &Base, SelectionDAG &DAG){
+ SDValue &Base,
+ SelectionDAG &DAG) const {
+ // FIXME dl should come from parent load or store, not from address
+ DebugLoc dl = N.getDebugLoc();
// If this can be more profitably realized as r+r, fail.
if (SelectAddressRegReg(N, Disp, Base, DAG))
return false;
-
+
if (N.getOpcode() == ISD::ADD) {
short imm = 0;
if (isIntS16Immediate(N.getOperand(1), imm)) {
return true; // [r+i]
} else if (N.getOperand(1).getOpcode() == PPCISD::Lo) {
// Match LOAD (ADD (X, Lo(G))).
- assert(!cast<ConstantSDNode>(N.getOperand(1).getOperand(1))->getValue()
+ assert(!cast<ConstantSDNode>(N.getOperand(1).getOperand(1))->getZExtValue()
&& "Cannot handle constant offsets yet!");
Disp = N.getOperand(1).getOperand(0); // The global address.
assert(Disp.getOpcode() == ISD::TargetGlobalAddress ||
}
} else if (ConstantSDNode *CN = dyn_cast<ConstantSDNode>(N)) {
// Loading from a constant address.
-
+
// If this address fits entirely in a 16-bit sext immediate field, codegen
// this as "d, 0"
short Imm;
// Handle 32-bit sext immediates with LIS + addr mode.
if (CN->getValueType(0) == MVT::i32 ||
- (int64_t)CN->getValue() == (int)CN->getValue()) {
- int Addr = (int)CN->getValue();
-
+ (int64_t)CN->getZExtValue() == (int)CN->getZExtValue()) {
+ int Addr = (int)CN->getZExtValue();
+
// Otherwise, break this down into an LIS + disp.
Disp = DAG.getTargetConstant((short)Addr, MVT::i32);
-
+
Base = DAG.getTargetConstant((Addr - (signed short)Addr) >> 16, MVT::i32);
unsigned Opc = CN->getValueType(0) == MVT::i32 ? PPC::LIS : PPC::LIS8;
- Base = SDValue(DAG.getTargetNode(Opc, CN->getValueType(0), Base), 0);
+ Base = SDValue(DAG.getTargetNode(Opc, dl, CN->getValueType(0), Base), 0);
return true;
}
}
-
+
Disp = DAG.getTargetConstant(0, getPointerTy());
if (FrameIndexSDNode *FI = dyn_cast<FrameIndexSDNode>(N))
Base = DAG.getTargetFrameIndex(FI->getIndex(), N.getValueType());
/// represented as an indexed [r+r] operation.
bool PPCTargetLowering::SelectAddressRegRegOnly(SDValue N, SDValue &Base,
SDValue &Index,
- SelectionDAG &DAG) {
+ SelectionDAG &DAG) const {
// Check to see if we can easily represent this as an [r+r] address. This
// will fail if it thinks that the address is more profitably represented as
// reg+imm, e.g. where imm = 0.
if (SelectAddressRegReg(N, Base, Index, DAG))
return true;
-
+
// If the operand is an addition, always emit this as [r+r], since this is
// better (for code size, and execution, as the memop does the add for free)
// than emitting an explicit add.
Index = N.getOperand(1);
return true;
}
-
+
// Otherwise, do it the hard way, using R0 as the base register.
Base = DAG.getRegister(PPC::R0, N.getValueType());
Index = N;
/// [r+imm*4]. Suitable for use by STD and friends.
bool PPCTargetLowering::SelectAddressRegImmShift(SDValue N, SDValue &Disp,
SDValue &Base,
- SelectionDAG &DAG) {
+ SelectionDAG &DAG) const {
+ // FIXME dl should come from the parent load or store, not the address
+ DebugLoc dl = N.getDebugLoc();
// If this can be more profitably realized as r+r, fail.
if (SelectAddressRegReg(N, Disp, Base, DAG))
return false;
-
+
if (N.getOpcode() == ISD::ADD) {
short imm = 0;
if (isIntS16Immediate(N.getOperand(1), imm) && (imm & 3) == 0) {
return true; // [r+i]
} else if (N.getOperand(1).getOpcode() == PPCISD::Lo) {
// Match LOAD (ADD (X, Lo(G))).
- assert(!cast<ConstantSDNode>(N.getOperand(1).getOperand(1))->getValue()
+ assert(!cast<ConstantSDNode>(N.getOperand(1).getOperand(1))->getZExtValue()
&& "Cannot handle constant offsets yet!");
Disp = N.getOperand(1).getOperand(0); // The global address.
assert(Disp.getOpcode() == ISD::TargetGlobalAddress ||
}
} else if (ConstantSDNode *CN = dyn_cast<ConstantSDNode>(N)) {
// Loading from a constant address. Verify low two bits are clear.
- if ((CN->getValue() & 3) == 0) {
+ if ((CN->getZExtValue() & 3) == 0) {
// If this address fits entirely in a 14-bit sext immediate field, codegen
// this as "d, 0"
short Imm;
Base = DAG.getRegister(PPC::R0, CN->getValueType(0));
return true;
}
-
+
// Fold the low-part of 32-bit absolute addresses into addr mode.
if (CN->getValueType(0) == MVT::i32 ||
- (int64_t)CN->getValue() == (int)CN->getValue()) {
- int Addr = (int)CN->getValue();
-
+ (int64_t)CN->getZExtValue() == (int)CN->getZExtValue()) {
+ int Addr = (int)CN->getZExtValue();
+
// Otherwise, break this down into an LIS + disp.
Disp = DAG.getTargetConstant((short)Addr >> 2, MVT::i32);
-
Base = DAG.getTargetConstant((Addr-(signed short)Addr) >> 16, MVT::i32);
unsigned Opc = CN->getValueType(0) == MVT::i32 ? PPC::LIS : PPC::LIS8;
- Base = SDValue(DAG.getTargetNode(Opc, CN->getValueType(0), Base), 0);
+ Base = SDValue(DAG.getTargetNode(Opc, dl, CN->getValueType(0), Base),0);
return true;
}
}
}
-
+
Disp = DAG.getTargetConstant(0, getPointerTy());
if (FrameIndexSDNode *FI = dyn_cast<FrameIndexSDNode>(N))
Base = DAG.getTargetFrameIndex(FI->getIndex(), N.getValueType());
bool PPCTargetLowering::getPreIndexedAddressParts(SDNode *N, SDValue &Base,
SDValue &Offset,
ISD::MemIndexedMode &AM,
- SelectionDAG &DAG) {
+ SelectionDAG &DAG) const {
// Disabled by default for now.
if (!EnablePPCPreinc) return false;
-
+
SDValue Ptr;
MVT VT;
if (LoadSDNode *LD = dyn_cast<LoadSDNode>(N)) {
Ptr = LD->getBasePtr();
VT = LD->getMemoryVT();
-
+
} else if (StoreSDNode *ST = dyn_cast<StoreSDNode>(N)) {
ST = ST;
Ptr = ST->getBasePtr();
// PowerPC doesn't have preinc load/store instructions for vectors.
if (VT.isVector())
return false;
-
+
// TODO: Check reg+reg first.
-
+
// LDU/STU use reg+imm*4, others use reg+imm.
if (VT != MVT::i64) {
// reg + imm
LD->getExtensionType() == ISD::SEXTLOAD &&
isa<ConstantSDNode>(Offset))
return false;
- }
-
+ }
+
AM = ISD::PRE_INC;
return true;
}
// LowerOperation implementation
//===----------------------------------------------------------------------===//
-SDValue PPCTargetLowering::LowerConstantPool(SDValue Op,
+SDValue PPCTargetLowering::LowerConstantPool(SDValue Op,
SelectionDAG &DAG) {
MVT PtrVT = Op.getValueType();
ConstantPoolSDNode *CP = cast<ConstantPoolSDNode>(Op);
Constant *C = CP->getConstVal();
SDValue CPI = DAG.getTargetConstantPool(C, PtrVT, CP->getAlignment());
SDValue Zero = DAG.getConstant(0, PtrVT);
+ // FIXME there isn't really any debug info here
+ DebugLoc dl = Op.getDebugLoc();
const TargetMachine &TM = DAG.getTarget();
-
- SDValue Hi = DAG.getNode(PPCISD::Hi, PtrVT, CPI, Zero);
- SDValue Lo = DAG.getNode(PPCISD::Lo, PtrVT, CPI, Zero);
+
+ SDValue Hi = DAG.getNode(PPCISD::Hi, dl, PtrVT, CPI, Zero);
+ SDValue Lo = DAG.getNode(PPCISD::Lo, dl, PtrVT, CPI, Zero);
// If this is a non-darwin platform, we don't support non-static relo models
// yet.
!TM.getSubtarget<PPCSubtarget>().isDarwin()) {
// Generate non-pic code that has direct accesses to the constant pool.
// The address of the global is just (hi(&g)+lo(&g)).
- return DAG.getNode(ISD::ADD, PtrVT, Hi, Lo);
+ return DAG.getNode(ISD::ADD, dl, PtrVT, Hi, Lo);
}
-
+
if (TM.getRelocationModel() == Reloc::PIC_) {
// With PIC, the first instruction is actually "GR+hi(&G)".
- Hi = DAG.getNode(ISD::ADD, PtrVT,
- DAG.getNode(PPCISD::GlobalBaseReg, PtrVT), Hi);
+ Hi = DAG.getNode(ISD::ADD, dl, PtrVT,
+ DAG.getNode(PPCISD::GlobalBaseReg,
+ DebugLoc::getUnknownLoc(), PtrVT), Hi);
}
-
- Lo = DAG.getNode(ISD::ADD, PtrVT, Hi, Lo);
+
+ Lo = DAG.getNode(ISD::ADD, dl, PtrVT, Hi, Lo);
return Lo;
}
JumpTableSDNode *JT = cast<JumpTableSDNode>(Op);
SDValue JTI = DAG.getTargetJumpTable(JT->getIndex(), PtrVT);
SDValue Zero = DAG.getConstant(0, PtrVT);
-
+ // FIXME there isn't really any debug loc here
+ DebugLoc dl = Op.getDebugLoc();
+
const TargetMachine &TM = DAG.getTarget();
- SDValue Hi = DAG.getNode(PPCISD::Hi, PtrVT, JTI, Zero);
- SDValue Lo = DAG.getNode(PPCISD::Lo, PtrVT, JTI, Zero);
+ SDValue Hi = DAG.getNode(PPCISD::Hi, dl, PtrVT, JTI, Zero);
+ SDValue Lo = DAG.getNode(PPCISD::Lo, dl, PtrVT, JTI, Zero);
// If this is a non-darwin platform, we don't support non-static relo models
// yet.
!TM.getSubtarget<PPCSubtarget>().isDarwin()) {
// Generate non-pic code that has direct accesses to the constant pool.
// The address of the global is just (hi(&g)+lo(&g)).
- return DAG.getNode(ISD::ADD, PtrVT, Hi, Lo);
+ return DAG.getNode(ISD::ADD, dl, PtrVT, Hi, Lo);
}
-
+
if (TM.getRelocationModel() == Reloc::PIC_) {
// With PIC, the first instruction is actually "GR+hi(&G)".
- Hi = DAG.getNode(ISD::ADD, PtrVT,
- DAG.getNode(PPCISD::GlobalBaseReg, PtrVT), Hi);
+ Hi = DAG.getNode(ISD::ADD, dl, PtrVT,
+ DAG.getNode(PPCISD::GlobalBaseReg,
+ DebugLoc::getUnknownLoc(), PtrVT), Hi);
}
-
- Lo = DAG.getNode(ISD::ADD, PtrVT, Hi, Lo);
+
+ Lo = DAG.getNode(ISD::ADD, dl, PtrVT, Hi, Lo);
return Lo;
}
-SDValue PPCTargetLowering::LowerGlobalTLSAddress(SDValue Op,
+SDValue PPCTargetLowering::LowerGlobalTLSAddress(SDValue Op,
SelectionDAG &DAG) {
- assert(0 && "TLS not implemented for PPC.");
+ LLVM_UNREACHABLE("TLS not implemented for PPC.");
return SDValue(); // Not reached
}
-SDValue PPCTargetLowering::LowerGlobalAddress(SDValue Op,
- SelectionDAG &DAG) {
+SDValue PPCTargetLowering::LowerGlobalAddress(SDValue Op,
+ SelectionDAG &DAG) {
MVT PtrVT = Op.getValueType();
GlobalAddressSDNode *GSDN = cast<GlobalAddressSDNode>(Op);
GlobalValue *GV = GSDN->getGlobal();
SDValue GA = DAG.getTargetGlobalAddress(GV, PtrVT, GSDN->getOffset());
- // If it's a debug information descriptor, don't mess with it.
- if (DAG.isVerifiedDebugInfoDesc(Op))
- return GA;
SDValue Zero = DAG.getConstant(0, PtrVT);
-
+ // FIXME there isn't really any debug info here
+ DebugLoc dl = GSDN->getDebugLoc();
+
const TargetMachine &TM = DAG.getTarget();
- SDValue Hi = DAG.getNode(PPCISD::Hi, PtrVT, GA, Zero);
- SDValue Lo = DAG.getNode(PPCISD::Lo, PtrVT, GA, Zero);
+ SDValue Hi = DAG.getNode(PPCISD::Hi, dl, PtrVT, GA, Zero);
+ SDValue Lo = DAG.getNode(PPCISD::Lo, dl, PtrVT, GA, Zero);
// If this is a non-darwin platform, we don't support non-static relo models
// yet.
!TM.getSubtarget<PPCSubtarget>().isDarwin()) {
// Generate non-pic code that has direct accesses to globals.
// The address of the global is just (hi(&g)+lo(&g)).
- return DAG.getNode(ISD::ADD, PtrVT, Hi, Lo);
+ return DAG.getNode(ISD::ADD, dl, PtrVT, Hi, Lo);
}
-
+
if (TM.getRelocationModel() == Reloc::PIC_) {
// With PIC, the first instruction is actually "GR+hi(&G)".
- Hi = DAG.getNode(ISD::ADD, PtrVT,
- DAG.getNode(PPCISD::GlobalBaseReg, PtrVT), Hi);
+ Hi = DAG.getNode(ISD::ADD, dl, PtrVT,
+ DAG.getNode(PPCISD::GlobalBaseReg,
+ DebugLoc::getUnknownLoc(), PtrVT), Hi);
}
-
- Lo = DAG.getNode(ISD::ADD, PtrVT, Hi, Lo);
-
+
+ Lo = DAG.getNode(ISD::ADD, dl, PtrVT, Hi, Lo);
+
if (!TM.getSubtarget<PPCSubtarget>().hasLazyResolverStub(GV))
return Lo;
-
+
// If the global is weak or external, we have to go through the lazy
// resolution stub.
- return DAG.getLoad(PtrVT, DAG.getEntryNode(), Lo, NULL, 0);
+ return DAG.getLoad(PtrVT, dl, DAG.getEntryNode(), Lo, NULL, 0);
}
SDValue PPCTargetLowering::LowerSETCC(SDValue Op, SelectionDAG &DAG) {
ISD::CondCode CC = cast<CondCodeSDNode>(Op.getOperand(2))->get();
-
+ DebugLoc dl = Op.getDebugLoc();
+
// If we're comparing for equality to zero, expose the fact that this is
// implented as a ctlz/srl pair on ppc, so that the dag combiner can
// fold the new nodes.
SDValue Zext = Op.getOperand(0);
if (VT.bitsLT(MVT::i32)) {
VT = MVT::i32;
- Zext = DAG.getNode(ISD::ZERO_EXTEND, VT, Op.getOperand(0));
- }
+ Zext = DAG.getNode(ISD::ZERO_EXTEND, dl, VT, Op.getOperand(0));
+ }
unsigned Log2b = Log2_32(VT.getSizeInBits());
- SDValue Clz = DAG.getNode(ISD::CTLZ, VT, Zext);
- SDValue Scc = DAG.getNode(ISD::SRL, VT, Clz,
- DAG.getConstant(Log2b, MVT::i32));
- return DAG.getNode(ISD::TRUNCATE, MVT::i32, Scc);
+ SDValue Clz = DAG.getNode(ISD::CTLZ, dl, VT, Zext);
+ SDValue Scc = DAG.getNode(ISD::SRL, dl, VT, Clz,
+ DAG.getConstant(Log2b, MVT::i32));
+ return DAG.getNode(ISD::TRUNCATE, dl, MVT::i32, Scc);
}
- // Leave comparisons against 0 and -1 alone for now, since they're usually
+ // Leave comparisons against 0 and -1 alone for now, since they're usually
// optimized. FIXME: revisit this when we can custom lower all setcc
// optimizations.
if (C->isAllOnesValue() || C->isNullValue())
return SDValue();
}
-
+
// If we have an integer seteq/setne, turn it into a compare against zero
// by xor'ing the rhs with the lhs, which is faster than setting a
// condition register, reading it back out, and masking the correct bit. The
MVT LHSVT = Op.getOperand(0).getValueType();
if (LHSVT.isInteger() && (CC == ISD::SETEQ || CC == ISD::SETNE)) {
MVT VT = Op.getValueType();
- SDValue Sub = DAG.getNode(ISD::XOR, LHSVT, Op.getOperand(0),
+ SDValue Sub = DAG.getNode(ISD::XOR, dl, LHSVT, Op.getOperand(0),
Op.getOperand(1));
- return DAG.getSetCC(VT, Sub, DAG.getConstant(0, LHSVT), CC);
+ return DAG.getSetCC(dl, VT, Sub, DAG.getConstant(0, LHSVT), CC);
}
return SDValue();
}
unsigned VarArgsNumGPR,
unsigned VarArgsNumFPR,
const PPCSubtarget &Subtarget) {
-
- assert(0 && "VAARG in ELF32 ABI not implemented yet!");
+
+ LLVM_UNREACHABLE("VAARG not yet implemented for the SVR4 ABI!");
return SDValue(); // Not reached
}
-SDValue PPCTargetLowering::LowerVASTART(SDValue Op, SelectionDAG &DAG,
- int VarArgsFrameIndex,
- int VarArgsStackOffset,
- unsigned VarArgsNumGPR,
- unsigned VarArgsNumFPR,
- const PPCSubtarget &Subtarget) {
+SDValue PPCTargetLowering::LowerTRAMPOLINE(SDValue Op, SelectionDAG &DAG) {
+ SDValue Chain = Op.getOperand(0);
+ SDValue Trmp = Op.getOperand(1); // trampoline
+ SDValue FPtr = Op.getOperand(2); // nested function
+ SDValue Nest = Op.getOperand(3); // 'nest' parameter value
+ DebugLoc dl = Op.getDebugLoc();
+
+ MVT PtrVT = DAG.getTargetLoweringInfo().getPointerTy();
+ bool isPPC64 = (PtrVT == MVT::i64);
+ const Type *IntPtrTy =
+ DAG.getTargetLoweringInfo().getTargetData()->getIntPtrType();
+
+ TargetLowering::ArgListTy Args;
+ TargetLowering::ArgListEntry Entry;
- if (Subtarget.isMachoABI()) {
+ Entry.Ty = IntPtrTy;
+ Entry.Node = Trmp; Args.push_back(Entry);
+
+ // TrampSize == (isPPC64 ? 48 : 40);
+ Entry.Node = DAG.getConstant(isPPC64 ? 48 : 40,
+ isPPC64 ? MVT::i64 : MVT::i32);
+ Args.push_back(Entry);
+
+ Entry.Node = FPtr; Args.push_back(Entry);
+ Entry.Node = Nest; Args.push_back(Entry);
+
+ // Lower to a call to __trampoline_setup(Trmp, TrampSize, FPtr, ctx_reg)
+ std::pair<SDValue, SDValue> CallResult =
+ LowerCallTo(Chain, Op.getValueType().getTypeForMVT(*DAG.getContext()),
+ false, false, false, false, 0, CallingConv::C, false,
+ DAG.getExternalSymbol("__trampoline_setup", PtrVT),
+ Args, DAG, dl);
+
+ SDValue Ops[] =
+ { CallResult.first, CallResult.second };
+
+ return DAG.getMergeValues(Ops, 2, dl);
+}
+
+SDValue PPCTargetLowering::LowerVASTART(SDValue Op, SelectionDAG &DAG,
+ int VarArgsFrameIndex,
+ int VarArgsStackOffset,
+ unsigned VarArgsNumGPR,
+ unsigned VarArgsNumFPR,
+ const PPCSubtarget &Subtarget) {
+ DebugLoc dl = Op.getDebugLoc();
+
+ if (Subtarget.isDarwinABI()) {
// vastart just stores the address of the VarArgsFrameIndex slot into the
// memory location argument.
MVT PtrVT = DAG.getTargetLoweringInfo().getPointerTy();
SDValue FR = DAG.getFrameIndex(VarArgsFrameIndex, PtrVT);
const Value *SV = cast<SrcValueSDNode>(Op.getOperand(2))->getValue();
- return DAG.getStore(Op.getOperand(0), FR, Op.getOperand(1), SV, 0);
+ return DAG.getStore(Op.getOperand(0), dl, FR, Op.getOperand(1), SV, 0);
}
- // For ELF 32 ABI we follow the layout of the va_list struct.
+ // For the SVR4 ABI we follow the layout of the va_list struct.
// We suppose the given va_list is already allocated.
//
// typedef struct {
// } va_list[1];
- SDValue ArgGPR = DAG.getConstant(VarArgsNumGPR, MVT::i8);
- SDValue ArgFPR = DAG.getConstant(VarArgsNumFPR, MVT::i8);
-
+ SDValue ArgGPR = DAG.getConstant(VarArgsNumGPR, MVT::i32);
+ SDValue ArgFPR = DAG.getConstant(VarArgsNumFPR, MVT::i32);
+
MVT PtrVT = DAG.getTargetLoweringInfo().getPointerTy();
-
+
SDValue StackOffsetFI = DAG.getFrameIndex(VarArgsStackOffset, PtrVT);
SDValue FR = DAG.getFrameIndex(VarArgsFrameIndex, PtrVT);
-
+
uint64_t FrameOffset = PtrVT.getSizeInBits()/8;
SDValue ConstFrameOffset = DAG.getConstant(FrameOffset, PtrVT);
uint64_t FPROffset = 1;
SDValue ConstFPROffset = DAG.getConstant(FPROffset, PtrVT);
-
+
const Value *SV = cast<SrcValueSDNode>(Op.getOperand(2))->getValue();
-
+
// Store first byte : number of int regs
- SDValue firstStore = DAG.getStore(Op.getOperand(0), ArgGPR,
- Op.getOperand(1), SV, 0);
+ SDValue firstStore = DAG.getTruncStore(Op.getOperand(0), dl, ArgGPR,
+ Op.getOperand(1), SV, 0, MVT::i8);
uint64_t nextOffset = FPROffset;
- SDValue nextPtr = DAG.getNode(ISD::ADD, PtrVT, Op.getOperand(1),
+ SDValue nextPtr = DAG.getNode(ISD::ADD, dl, PtrVT, Op.getOperand(1),
ConstFPROffset);
-
+
// Store second byte : number of float regs
SDValue secondStore =
- DAG.getStore(firstStore, ArgFPR, nextPtr, SV, nextOffset);
+ DAG.getTruncStore(firstStore, dl, ArgFPR, nextPtr, SV, nextOffset, MVT::i8);
nextOffset += StackOffset;
- nextPtr = DAG.getNode(ISD::ADD, PtrVT, nextPtr, ConstStackOffset);
-
+ nextPtr = DAG.getNode(ISD::ADD, dl, PtrVT, nextPtr, ConstStackOffset);
+
// Store second word : arguments given on stack
SDValue thirdStore =
- DAG.getStore(secondStore, StackOffsetFI, nextPtr, SV, nextOffset);
+ DAG.getStore(secondStore, dl, StackOffsetFI, nextPtr, SV, nextOffset);
nextOffset += FrameOffset;
- nextPtr = DAG.getNode(ISD::ADD, PtrVT, nextPtr, ConstFrameOffset);
+ nextPtr = DAG.getNode(ISD::ADD, dl, PtrVT, nextPtr, ConstFrameOffset);
// Store third word : arguments given in registers
- return DAG.getStore(thirdStore, FR, nextPtr, SV, nextOffset);
+ return DAG.getStore(thirdStore, dl, FR, nextPtr, SV, nextOffset);
}
#include "PPCGenCallingConv.inc"
+static bool CC_PPC_SVR4_Custom_Dummy(unsigned &ValNo, MVT &ValVT, MVT &LocVT,
+ CCValAssign::LocInfo &LocInfo,
+ ISD::ArgFlagsTy &ArgFlags,
+ CCState &State) {
+ return true;
+}
+
+static bool CC_PPC_SVR4_Custom_AlignArgRegs(unsigned &ValNo, MVT &ValVT,
+ MVT &LocVT,
+ CCValAssign::LocInfo &LocInfo,
+ ISD::ArgFlagsTy &ArgFlags,
+ CCState &State) {
+ static const unsigned ArgRegs[] = {
+ PPC::R3, PPC::R4, PPC::R5, PPC::R6,
+ PPC::R7, PPC::R8, PPC::R9, PPC::R10,
+ };
+ const unsigned NumArgRegs = array_lengthof(ArgRegs);
+
+ unsigned RegNum = State.getFirstUnallocated(ArgRegs, NumArgRegs);
+
+ // Skip one register if the first unallocated register has an even register
+ // number and there are still argument registers available which have not been
+ // allocated yet. RegNum is actually an index into ArgRegs, which means we
+ // need to skip a register if RegNum is odd.
+ if (RegNum != NumArgRegs && RegNum % 2 == 1) {
+ State.AllocateReg(ArgRegs[RegNum]);
+ }
+
+ // Always return false here, as this function only makes sure that the first
+ // unallocated register has an odd register number and does not actually
+ // allocate a register for the current argument.
+ return false;
+}
+
+static bool CC_PPC_SVR4_Custom_AlignFPArgRegs(unsigned &ValNo, MVT &ValVT,
+ MVT &LocVT,
+ CCValAssign::LocInfo &LocInfo,
+ ISD::ArgFlagsTy &ArgFlags,
+ CCState &State) {
+ static const unsigned ArgRegs[] = {
+ PPC::F1, PPC::F2, PPC::F3, PPC::F4, PPC::F5, PPC::F6, PPC::F7,
+ PPC::F8
+ };
+
+ const unsigned NumArgRegs = array_lengthof(ArgRegs);
+
+ unsigned RegNum = State.getFirstUnallocated(ArgRegs, NumArgRegs);
+
+ // If there is only one Floating-point register left we need to put both f64
+ // values of a split ppc_fp128 value on the stack.
+ if (RegNum != NumArgRegs && ArgRegs[RegNum] == PPC::F8) {
+ State.AllocateReg(ArgRegs[RegNum]);
+ }
+
+ // Always return false here, as this function only makes sure that the two f64
+ // values a ppc_fp128 value is split into are both passed in registers or both
+ // passed on the stack and does not actually allocate a register for the
+ // current argument.
+ return false;
+}
+
/// GetFPR - Get the set of FP registers that should be allocated for arguments,
/// depending on which subtarget is selected.
static const unsigned *GetFPR(const PPCSubtarget &Subtarget) {
- if (Subtarget.isMachoABI()) {
+ if (Subtarget.isDarwinABI()) {
static const unsigned FPR[] = {
PPC::F1, PPC::F2, PPC::F3, PPC::F4, PPC::F5, PPC::F6, PPC::F7,
PPC::F8, PPC::F9, PPC::F10, PPC::F11, PPC::F12, PPC::F13
};
return FPR;
}
-
-
+
+
static const unsigned FPR[] = {
PPC::F1, PPC::F2, PPC::F3, PPC::F4, PPC::F5, PPC::F6, PPC::F7,
PPC::F8
/// CalculateStackSlotSize - Calculates the size reserved for this argument on
/// the stack.
-static unsigned CalculateStackSlotSize(SDValue Arg, SDValue Flag,
- bool isVarArg, unsigned PtrByteSize) {
+static unsigned CalculateStackSlotSize(SDValue Arg, ISD::ArgFlagsTy Flags,
+ unsigned PtrByteSize) {
MVT ArgVT = Arg.getValueType();
- ISD::ArgFlagsTy Flags = cast<ARG_FLAGSSDNode>(Flag)->getArgFlags();
- unsigned ArgSize =ArgVT.getSizeInBits()/8;
+ unsigned ArgSize = ArgVT.getSizeInBits()/8;
if (Flags.isByVal())
ArgSize = Flags.getByValSize();
ArgSize = ((ArgSize + PtrByteSize - 1)/PtrByteSize) * PtrByteSize;
}
SDValue
-PPCTargetLowering::LowerFORMAL_ARGUMENTS(SDValue Op,
- SelectionDAG &DAG,
- int &VarArgsFrameIndex,
- int &VarArgsStackOffset,
- unsigned &VarArgsNumGPR,
- unsigned &VarArgsNumFPR,
- const PPCSubtarget &Subtarget) {
- // TODO: add description of PPC stack frame format, or at least some docs.
+PPCTargetLowering::LowerFORMAL_ARGUMENTS_SVR4(SDValue Op,
+ SelectionDAG &DAG,
+ int &VarArgsFrameIndex,
+ int &VarArgsStackOffset,
+ unsigned &VarArgsNumGPR,
+ unsigned &VarArgsNumFPR,
+ const PPCSubtarget &Subtarget) {
+ // SVR4 ABI Stack Frame Layout:
+ // +-----------------------------------+
+ // +--> | Back chain |
+ // | +-----------------------------------+
+ // | | Floating-point register save area |
+ // | +-----------------------------------+
+ // | | General register save area |
+ // | +-----------------------------------+
+ // | | CR save word |
+ // | +-----------------------------------+
+ // | | VRSAVE save word |
+ // | +-----------------------------------+
+ // | | Alignment padding |
+ // | +-----------------------------------+
+ // | | Vector register save area |
+ // | +-----------------------------------+
+ // | | Local variable space |
+ // | +-----------------------------------+
+ // | | Parameter list area |
+ // | +-----------------------------------+
+ // | | LR save word |
+ // | +-----------------------------------+
+ // SP--> +--- | Back chain |
+ // +-----------------------------------+
//
+ // Specifications:
+ // System V Application Binary Interface PowerPC Processor Supplement
+ // AltiVec Technology Programming Interface Manual
+
MachineFunction &MF = DAG.getMachineFunction();
MachineFrameInfo *MFI = MF.getFrameInfo();
- MachineRegisterInfo &RegInfo = MF.getRegInfo();
SmallVector<SDValue, 8> ArgValues;
SDValue Root = Op.getOperand(0);
- bool isVarArg = cast<ConstantSDNode>(Op.getOperand(2))->getValue() != 0;
-
+ bool isVarArg = cast<ConstantSDNode>(Op.getOperand(2))->getZExtValue() != 0;
+ DebugLoc dl = Op.getDebugLoc();
+
+ MVT PtrVT = DAG.getTargetLoweringInfo().getPointerTy();
+ // Potential tail calls could cause overwriting of argument stack slots.
+ unsigned CC = MF.getFunction()->getCallingConv();
+ bool isImmutable = !(PerformTailCallOpt && (CC==CallingConv::Fast));
+ unsigned PtrByteSize = 4;
+
+ // Assign locations to all of the incoming arguments.
+ SmallVector<CCValAssign, 16> ArgLocs;
+ CCState CCInfo(CC, isVarArg, getTargetMachine(), ArgLocs, DAG.getContext());
+
+ // Reserve space for the linkage area on the stack.
+ CCInfo.AllocateStack(PPCFrameInfo::getLinkageSize(false, false), PtrByteSize);
+
+ CCInfo.AnalyzeFormalArguments(Op.getNode(), CC_PPC_SVR4);
+
+ for (unsigned i = 0, e = ArgLocs.size(); i != e; ++i) {
+ CCValAssign &VA = ArgLocs[i];
+
+ // Arguments stored in registers.
+ if (VA.isRegLoc()) {
+ TargetRegisterClass *RC;
+ MVT ValVT = VA.getValVT();
+
+ switch (ValVT.getSimpleVT()) {
+ default:
+ LLVM_UNREACHABLE("ValVT not supported by FORMAL_ARGUMENTS Lowering");
+ case MVT::i32:
+ RC = PPC::GPRCRegisterClass;
+ break;
+ case MVT::f32:
+ RC = PPC::F4RCRegisterClass;
+ break;
+ case MVT::f64:
+ RC = PPC::F8RCRegisterClass;
+ break;
+ case MVT::v16i8:
+ case MVT::v8i16:
+ case MVT::v4i32:
+ case MVT::v4f32:
+ RC = PPC::VRRCRegisterClass;
+ break;
+ }
+
+ // Transform the arguments stored in physical registers into virtual ones.
+ unsigned Reg = MF.addLiveIn(VA.getLocReg(), RC);
+ SDValue ArgValue = DAG.getCopyFromReg(Root, dl, Reg, ValVT);
+
+ ArgValues.push_back(ArgValue);
+ } else {
+ // Argument stored in memory.
+ assert(VA.isMemLoc());
+
+ unsigned ArgSize = VA.getLocVT().getSizeInBits() / 8;
+ int FI = MFI->CreateFixedObject(ArgSize, VA.getLocMemOffset(),
+ isImmutable);
+
+ // Create load nodes to retrieve arguments from the stack.
+ SDValue FIN = DAG.getFrameIndex(FI, PtrVT);
+ ArgValues.push_back(DAG.getLoad(VA.getValVT(), dl, Root, FIN, NULL, 0));
+ }
+ }
+
+ // Assign locations to all of the incoming aggregate by value arguments.
+ // Aggregates passed by value are stored in the local variable space of the
+ // caller's stack frame, right above the parameter list area.
+ SmallVector<CCValAssign, 16> ByValArgLocs;
+ CCState CCByValInfo(CC, isVarArg, getTargetMachine(),
+ ByValArgLocs, DAG.getContext());
+
+ // Reserve stack space for the allocations in CCInfo.
+ CCByValInfo.AllocateStack(CCInfo.getNextStackOffset(), PtrByteSize);
+
+ CCByValInfo.AnalyzeFormalArguments(Op.getNode(), CC_PPC_SVR4_ByVal);
+
+ // Area that is at least reserved in the caller of this function.
+ unsigned MinReservedArea = CCByValInfo.getNextStackOffset();
+
+ // Set the size that is at least reserved in caller of this function. Tail
+ // call optimized function's reserved stack space needs to be aligned so that
+ // taking the difference between two stack areas will result in an aligned
+ // stack.
+ PPCFunctionInfo *FI = MF.getInfo<PPCFunctionInfo>();
+
+ MinReservedArea =
+ std::max(MinReservedArea,
+ PPCFrameInfo::getMinCallFrameSize(false, false));
+
+ unsigned TargetAlign = DAG.getMachineFunction().getTarget().getFrameInfo()->
+ getStackAlignment();
+ unsigned AlignMask = TargetAlign-1;
+ MinReservedArea = (MinReservedArea + AlignMask) & ~AlignMask;
+
+ FI->setMinReservedArea(MinReservedArea);
+
+ SmallVector<SDValue, 8> MemOps;
+
+ // If the function takes variable number of arguments, make a frame index for
+ // the start of the first vararg value... for expansion of llvm.va_start.
+ if (isVarArg) {
+ static const unsigned GPArgRegs[] = {
+ PPC::R3, PPC::R4, PPC::R5, PPC::R6,
+ PPC::R7, PPC::R8, PPC::R9, PPC::R10,
+ };
+ const unsigned NumGPArgRegs = array_lengthof(GPArgRegs);
+
+ static const unsigned FPArgRegs[] = {
+ PPC::F1, PPC::F2, PPC::F3, PPC::F4, PPC::F5, PPC::F6, PPC::F7,
+ PPC::F8
+ };
+ const unsigned NumFPArgRegs = array_lengthof(FPArgRegs);
+
+ VarArgsNumGPR = CCInfo.getFirstUnallocated(GPArgRegs, NumGPArgRegs);
+ VarArgsNumFPR = CCInfo.getFirstUnallocated(FPArgRegs, NumFPArgRegs);
+
+ // Make room for NumGPArgRegs and NumFPArgRegs.
+ int Depth = NumGPArgRegs * PtrVT.getSizeInBits()/8 +
+ NumFPArgRegs * MVT(MVT::f64).getSizeInBits()/8;
+
+ VarArgsStackOffset = MFI->CreateFixedObject(PtrVT.getSizeInBits()/8,
+ CCInfo.getNextStackOffset());
+
+ VarArgsFrameIndex = MFI->CreateStackObject(Depth, 8);
+ SDValue FIN = DAG.getFrameIndex(VarArgsFrameIndex, PtrVT);
+
+ // The fixed integer arguments of a variadic function are
+ // stored to the VarArgsFrameIndex on the stack.
+ unsigned GPRIndex = 0;
+ for (; GPRIndex != VarArgsNumGPR; ++GPRIndex) {
+ SDValue Val = DAG.getRegister(GPArgRegs[GPRIndex], PtrVT);
+ SDValue Store = DAG.getStore(Root, dl, Val, FIN, NULL, 0);
+ MemOps.push_back(Store);
+ // Increment the address by four for the next argument to store
+ SDValue PtrOff = DAG.getConstant(PtrVT.getSizeInBits()/8, PtrVT);
+ FIN = DAG.getNode(ISD::ADD, dl, PtrOff.getValueType(), FIN, PtrOff);
+ }
+
+ // If this function is vararg, store any remaining integer argument regs
+ // to their spots on the stack so that they may be loaded by deferencing the
+ // result of va_next.
+ for (; GPRIndex != NumGPArgRegs; ++GPRIndex) {
+ unsigned VReg = MF.addLiveIn(GPArgRegs[GPRIndex], &PPC::GPRCRegClass);
+
+ SDValue Val = DAG.getCopyFromReg(Root, dl, VReg, PtrVT);
+ SDValue Store = DAG.getStore(Val.getValue(1), dl, Val, FIN, NULL, 0);
+ MemOps.push_back(Store);
+ // Increment the address by four for the next argument to store
+ SDValue PtrOff = DAG.getConstant(PtrVT.getSizeInBits()/8, PtrVT);
+ FIN = DAG.getNode(ISD::ADD, dl, PtrOff.getValueType(), FIN, PtrOff);
+ }
+
+ // FIXME SVR4: We only need to save FP argument registers if CR bit 6 is
+ // set.
+
+ // The double arguments are stored to the VarArgsFrameIndex
+ // on the stack.
+ unsigned FPRIndex = 0;
+ for (FPRIndex = 0; FPRIndex != VarArgsNumFPR; ++FPRIndex) {
+ SDValue Val = DAG.getRegister(FPArgRegs[FPRIndex], MVT::f64);
+ SDValue Store = DAG.getStore(Root, dl, Val, FIN, NULL, 0);
+ MemOps.push_back(Store);
+ // Increment the address by eight for the next argument to store
+ SDValue PtrOff = DAG.getConstant(MVT(MVT::f64).getSizeInBits()/8,
+ PtrVT);
+ FIN = DAG.getNode(ISD::ADD, dl, PtrOff.getValueType(), FIN, PtrOff);
+ }
+
+ for (; FPRIndex != NumFPArgRegs; ++FPRIndex) {
+ unsigned VReg = MF.addLiveIn(FPArgRegs[FPRIndex], &PPC::F8RCRegClass);
+
+ SDValue Val = DAG.getCopyFromReg(Root, dl, VReg, MVT::f64);
+ SDValue Store = DAG.getStore(Val.getValue(1), dl, Val, FIN, NULL, 0);
+ MemOps.push_back(Store);
+ // Increment the address by eight for the next argument to store
+ SDValue PtrOff = DAG.getConstant(MVT(MVT::f64).getSizeInBits()/8,
+ PtrVT);
+ FIN = DAG.getNode(ISD::ADD, dl, PtrOff.getValueType(), FIN, PtrOff);
+ }
+ }
+
+ if (!MemOps.empty())
+ Root = DAG.getNode(ISD::TokenFactor, dl,
+ MVT::Other, &MemOps[0], MemOps.size());
+
+
+ ArgValues.push_back(Root);
+
+ // Return the new list of results.
+ return DAG.getNode(ISD::MERGE_VALUES, dl, Op.getNode()->getVTList(),
+ &ArgValues[0], ArgValues.size()).getValue(Op.getResNo());
+}
+
+SDValue
+PPCTargetLowering::LowerFORMAL_ARGUMENTS_Darwin(SDValue Op,
+ SelectionDAG &DAG,
+ int &VarArgsFrameIndex,
+ const PPCSubtarget &Subtarget) {
+ // TODO: add description of PPC stack frame format, or at least some docs.
+ //
+ MachineFunction &MF = DAG.getMachineFunction();
+ MachineFrameInfo *MFI = MF.getFrameInfo();
+ SmallVector<SDValue, 8> ArgValues;
+ SDValue Root = Op.getOperand(0);
+ bool isVarArg = cast<ConstantSDNode>(Op.getOperand(2))->getZExtValue() != 0;
+ DebugLoc dl = Op.getDebugLoc();
+
MVT PtrVT = DAG.getTargetLoweringInfo().getPointerTy();
bool isPPC64 = PtrVT == MVT::i64;
- bool isMachoABI = Subtarget.isMachoABI();
- bool isELF32_ABI = Subtarget.isELF32_ABI();
// Potential tail calls could cause overwriting of argument stack slots.
unsigned CC = MF.getFunction()->getCallingConv();
bool isImmutable = !(PerformTailCallOpt && (CC==CallingConv::Fast));
unsigned PtrByteSize = isPPC64 ? 8 : 4;
- unsigned ArgOffset = PPCFrameInfo::getLinkageSize(isPPC64, isMachoABI);
+ unsigned ArgOffset = PPCFrameInfo::getLinkageSize(isPPC64, true);
// Area that is at least reserved in caller of this function.
unsigned MinReservedArea = ArgOffset;
PPC::X3, PPC::X4, PPC::X5, PPC::X6,
PPC::X7, PPC::X8, PPC::X9, PPC::X10,
};
-
+
static const unsigned *FPR = GetFPR(Subtarget);
-
+
static const unsigned VR[] = {
PPC::V2, PPC::V3, PPC::V4, PPC::V5, PPC::V6, PPC::V7, PPC::V8,
PPC::V9, PPC::V10, PPC::V11, PPC::V12, PPC::V13
};
const unsigned Num_GPR_Regs = array_lengthof(GPR_32);
- const unsigned Num_FPR_Regs = isMachoABI ? 13 : 8;
+ const unsigned Num_FPR_Regs = 13;
const unsigned Num_VR_Regs = array_lengthof( VR);
unsigned GPR_idx = 0, FPR_idx = 0, VR_idx = 0;
-
+
const unsigned *GPR = isPPC64 ? GPR_64 : GPR_32;
-
+
// In 32-bit non-varargs functions, the stack space for vectors is after the
// stack space for non-vectors. We do not use this space unless we have
// too many vectors to fit in registers, something that only occurs in
- // constructed examples:), but we have to walk the arglist to figure
+ // constructed examples:), but we have to walk the arglist to figure
// that out...for the pathological case, compute VecArgOffset as the
// start of the vector parameter area. Computing VecArgOffset is the
// entire point of the following loop.
- // Altivec is not mentioned in the ppc32 Elf Supplement, so I'm not trying
- // to handle Elf here.
unsigned VecArgOffset = ArgOffset;
if (!isVarArg && !isPPC64) {
- for (unsigned ArgNo = 0, e = Op.Val->getNumValues()-1; ArgNo != e;
+ for (unsigned ArgNo = 0, e = Op.getNode()->getNumValues()-1; ArgNo != e;
++ArgNo) {
MVT ObjectVT = Op.getValue(ArgNo).getValueType();
unsigned ObjSize = ObjectVT.getSizeInBits()/8;
if (Flags.isByVal()) {
// ObjSize is the true size, ArgSize rounded up to multiple of regs.
ObjSize = Flags.getByValSize();
- unsigned ArgSize =
+ unsigned ArgSize =
((ObjSize + PtrByteSize - 1)/PtrByteSize) * PtrByteSize;
VecArgOffset += ArgSize;
continue;
}
switch(ObjectVT.getSimpleVT()) {
- default: assert(0 && "Unhandled argument type!");
+ default: LLVM_UNREACHABLE("Unhandled argument type!");
case MVT::i32:
case MVT::f32:
VecArgOffset += isPPC64 ? 8 : 4;
// Add DAG nodes to load the arguments or copy them out of registers. On
// entry to a function on PPC, the arguments start after the linkage area,
// although the first ones are often in registers.
- //
- // In the ELF 32 ABI, GPRs and stack are double word align: an argument
- // represented with two words (long long or double) must be copied to an
- // even GPR_idx value or to an even ArgOffset value.
SmallVector<SDValue, 8> MemOps;
unsigned nAltivecParamsAtEnd = 0;
- for (unsigned ArgNo = 0, e = Op.Val->getNumValues()-1; ArgNo != e; ++ArgNo) {
+ for (unsigned ArgNo = 0, e = Op.getNode()->getNumValues() - 1;
+ ArgNo != e; ++ArgNo) {
SDValue ArgVal;
bool needsLoad = false;
MVT ObjectVT = Op.getValue(ArgNo).getValueType();
unsigned ArgSize = ObjSize;
ISD::ArgFlagsTy Flags =
cast<ARG_FLAGSSDNode>(Op.getOperand(ArgNo+3))->getArgFlags();
- // See if next argument requires stack alignment in ELF
- bool Align = Flags.isSplit();
unsigned CurArgOffset = ArgOffset;
if (isVarArg || isPPC64) {
MinReservedArea = ((MinReservedArea+15)/16)*16;
MinReservedArea += CalculateStackSlotSize(Op.getValue(ArgNo),
- Op.getOperand(ArgNo+3),
- isVarArg,
+ Flags,
PtrByteSize);
} else nAltivecParamsAtEnd++;
} else
// Calculate min reserved area.
MinReservedArea += CalculateStackSlotSize(Op.getValue(ArgNo),
- Op.getOperand(ArgNo+3),
- isVarArg,
+ Flags,
PtrByteSize);
- // FIXME alignment for ELF may not be right
// FIXME the codegen can be much improved in some cases.
// We do not have to keep everything in memory.
if (Flags.isByVal()) {
// ObjSize is the true size, ArgSize rounded up to multiple of registers.
ObjSize = Flags.getByValSize();
ArgSize = ((ObjSize + PtrByteSize - 1)/PtrByteSize) * PtrByteSize;
- // Double word align in ELF
- if (Align && isELF32_ABI) GPR_idx += (GPR_idx % 2);
// Objects of size 1 and 2 are right justified, everything else is
// left justified. This means the memory address is adjusted forwards.
if (ObjSize==1 || ObjSize==2) {
ArgValues.push_back(FIN);
if (ObjSize==1 || ObjSize==2) {
if (GPR_idx != Num_GPR_Regs) {
- unsigned VReg = RegInfo.createVirtualRegister(&PPC::GPRCRegClass);
- RegInfo.addLiveIn(GPR[GPR_idx], VReg);
- SDValue Val = DAG.getCopyFromReg(Root, VReg, PtrVT);
- SDValue Store = DAG.getTruncStore(Val.getValue(1), Val, FIN,
+ unsigned VReg = MF.addLiveIn(GPR[GPR_idx], &PPC::GPRCRegClass);
+ SDValue Val = DAG.getCopyFromReg(Root, dl, VReg, PtrVT);
+ SDValue Store = DAG.getTruncStore(Val.getValue(1), dl, Val, FIN,
NULL, 0, ObjSize==1 ? MVT::i8 : MVT::i16 );
MemOps.push_back(Store);
++GPR_idx;
- if (isMachoABI) ArgOffset += PtrByteSize;
- } else {
- ArgOffset += PtrByteSize;
}
+
+ ArgOffset += PtrByteSize;
+
continue;
}
for (unsigned j = 0; j < ArgSize; j += PtrByteSize) {
// to memory. ArgVal will be address of the beginning of
// the object.
if (GPR_idx != Num_GPR_Regs) {
- unsigned VReg = RegInfo.createVirtualRegister(&PPC::GPRCRegClass);
- RegInfo.addLiveIn(GPR[GPR_idx], VReg);
+ unsigned VReg = MF.addLiveIn(GPR[GPR_idx], &PPC::GPRCRegClass);
int FI = MFI->CreateFixedObject(PtrByteSize, ArgOffset);
SDValue FIN = DAG.getFrameIndex(FI, PtrVT);
- SDValue Val = DAG.getCopyFromReg(Root, VReg, PtrVT);
- SDValue Store = DAG.getStore(Val.getValue(1), Val, FIN, NULL, 0);
+ SDValue Val = DAG.getCopyFromReg(Root, dl, VReg, PtrVT);
+ SDValue Store = DAG.getStore(Val.getValue(1), dl, Val, FIN, NULL, 0);
MemOps.push_back(Store);
++GPR_idx;
- if (isMachoABI) ArgOffset += PtrByteSize;
+ ArgOffset += PtrByteSize;
} else {
ArgOffset += ArgSize - (ArgOffset-CurArgOffset);
break;
}
switch (ObjectVT.getSimpleVT()) {
- default: assert(0 && "Unhandled argument type!");
+ default: LLVM_UNREACHABLE("Unhandled argument type!");
case MVT::i32:
if (!isPPC64) {
- // Double word align in ELF
- if (Align && isELF32_ABI) GPR_idx += (GPR_idx % 2);
-
if (GPR_idx != Num_GPR_Regs) {
- unsigned VReg = RegInfo.createVirtualRegister(&PPC::GPRCRegClass);
- RegInfo.addLiveIn(GPR[GPR_idx], VReg);
- ArgVal = DAG.getCopyFromReg(Root, VReg, MVT::i32);
+ unsigned VReg = MF.addLiveIn(GPR[GPR_idx], &PPC::GPRCRegClass);
+ ArgVal = DAG.getCopyFromReg(Root, dl, VReg, MVT::i32);
++GPR_idx;
} else {
needsLoad = true;
ArgSize = PtrByteSize;
}
- // Stack align in ELF
- if (needsLoad && Align && isELF32_ABI)
- ArgOffset += ((ArgOffset/4) % 2) * PtrByteSize;
- // All int arguments reserve stack space in Macho ABI.
- if (isMachoABI || needsLoad) ArgOffset += PtrByteSize;
+ // All int arguments reserve stack space in the Darwin ABI.
+ ArgOffset += PtrByteSize;
break;
}
// FALLTHROUGH
case MVT::i64: // PPC64
if (GPR_idx != Num_GPR_Regs) {
- unsigned VReg = RegInfo.createVirtualRegister(&PPC::G8RCRegClass);
- RegInfo.addLiveIn(GPR[GPR_idx], VReg);
- ArgVal = DAG.getCopyFromReg(Root, VReg, MVT::i64);
+ unsigned VReg = MF.addLiveIn(GPR[GPR_idx], &PPC::G8RCRegClass);
+ ArgVal = DAG.getCopyFromReg(Root, dl, VReg, MVT::i64);
if (ObjectVT == MVT::i32) {
// PPC64 passes i8, i16, and i32 values in i64 registers. Promote
// value to MVT::i64 and then truncate to the correct register size.
if (Flags.isSExt())
- ArgVal = DAG.getNode(ISD::AssertSext, MVT::i64, ArgVal,
+ ArgVal = DAG.getNode(ISD::AssertSext, dl, MVT::i64, ArgVal,
DAG.getValueType(ObjectVT));
else if (Flags.isZExt())
- ArgVal = DAG.getNode(ISD::AssertZext, MVT::i64, ArgVal,
+ ArgVal = DAG.getNode(ISD::AssertZext, dl, MVT::i64, ArgVal,
DAG.getValueType(ObjectVT));
- ArgVal = DAG.getNode(ISD::TRUNCATE, MVT::i32, ArgVal);
+ ArgVal = DAG.getNode(ISD::TRUNCATE, dl, MVT::i32, ArgVal);
}
++GPR_idx;
needsLoad = true;
ArgSize = PtrByteSize;
}
- // All int arguments reserve stack space in Macho ABI.
- if (isMachoABI || needsLoad) ArgOffset += 8;
+ // All int arguments reserve stack space in the Darwin ABI.
+ ArgOffset += 8;
break;
-
+
case MVT::f32:
case MVT::f64:
// Every 4 bytes of argument space consumes one of the GPRs available for
// argument passing.
- if (GPR_idx != Num_GPR_Regs && isMachoABI) {
+ if (GPR_idx != Num_GPR_Regs) {
++GPR_idx;
if (ObjSize == 8 && GPR_idx != Num_GPR_Regs && !isPPC64)
++GPR_idx;
}
if (FPR_idx != Num_FPR_Regs) {
unsigned VReg;
+
if (ObjectVT == MVT::f32)
- VReg = RegInfo.createVirtualRegister(&PPC::F4RCRegClass);
+ VReg = MF.addLiveIn(FPR[FPR_idx], &PPC::F4RCRegClass);
else
- VReg = RegInfo.createVirtualRegister(&PPC::F8RCRegClass);
- RegInfo.addLiveIn(FPR[FPR_idx], VReg);
- ArgVal = DAG.getCopyFromReg(Root, VReg, ObjectVT);
+ VReg = MF.addLiveIn(FPR[FPR_idx], &PPC::F8RCRegClass);
+
+ ArgVal = DAG.getCopyFromReg(Root, dl, VReg, ObjectVT);
++FPR_idx;
} else {
needsLoad = true;
}
-
- // Stack align in ELF
- if (needsLoad && Align && isELF32_ABI)
- ArgOffset += ((ArgOffset/4) % 2) * PtrByteSize;
- // All FP arguments reserve stack space in Macho ABI.
- if (isMachoABI || needsLoad) ArgOffset += isPPC64 ? 8 : ObjSize;
+
+ // All FP arguments reserve stack space in the Darwin ABI.
+ ArgOffset += isPPC64 ? 8 : ObjSize;
break;
case MVT::v4f32:
case MVT::v4i32:
// Note that vector arguments in registers don't reserve stack space,
// except in varargs functions.
if (VR_idx != Num_VR_Regs) {
- unsigned VReg = RegInfo.createVirtualRegister(&PPC::VRRCRegClass);
- RegInfo.addLiveIn(VR[VR_idx], VReg);
- ArgVal = DAG.getCopyFromReg(Root, VReg, ObjectVT);
+ unsigned VReg = MF.addLiveIn(VR[VR_idx], &PPC::VRRCRegClass);
+ ArgVal = DAG.getCopyFromReg(Root, dl, VReg, ObjectVT);
if (isVarArg) {
while ((ArgOffset % 16) != 0) {
ArgOffset += PtrByteSize;
}
break;
}
-
+
// We need to load the argument to a virtual register if we determined above
// that we ran out of physical registers of the appropriate type.
if (needsLoad) {
CurArgOffset + (ArgSize - ObjSize),
isImmutable);
SDValue FIN = DAG.getFrameIndex(FI, PtrVT);
- ArgVal = DAG.getLoad(ObjectVT, Root, FIN, NULL, 0);
+ ArgVal = DAG.getLoad(ObjectVT, dl, Root, FIN, NULL, 0);
}
-
+
ArgValues.push_back(ArgVal);
}
}
MinReservedArea =
std::max(MinReservedArea,
- PPCFrameInfo::getMinCallFrameSize(isPPC64, isMachoABI));
+ PPCFrameInfo::getMinCallFrameSize(isPPC64, true));
unsigned TargetAlign = DAG.getMachineFunction().getTarget().getFrameInfo()->
getStackAlignment();
unsigned AlignMask = TargetAlign-1;
// If the function takes variable number of arguments, make a frame index for
// the start of the first vararg value... for expansion of llvm.va_start.
if (isVarArg) {
-
- int depth;
- if (isELF32_ABI) {
- VarArgsNumGPR = GPR_idx;
- VarArgsNumFPR = FPR_idx;
-
- // Make room for Num_GPR_Regs, Num_FPR_Regs and for a possible frame
- // pointer.
- depth = -(Num_GPR_Regs * PtrVT.getSizeInBits()/8 +
- Num_FPR_Regs * MVT(MVT::f64).getSizeInBits()/8 +
- PtrVT.getSizeInBits()/8);
-
- VarArgsStackOffset = MFI->CreateFixedObject(PtrVT.getSizeInBits()/8,
- ArgOffset);
+ int Depth = ArgOffset;
- }
- else
- depth = ArgOffset;
-
VarArgsFrameIndex = MFI->CreateFixedObject(PtrVT.getSizeInBits()/8,
- depth);
+ Depth);
SDValue FIN = DAG.getFrameIndex(VarArgsFrameIndex, PtrVT);
-
- // In ELF 32 ABI, the fixed integer arguments of a variadic function are
- // stored to the VarArgsFrameIndex on the stack.
- if (isELF32_ABI) {
- for (GPR_idx = 0; GPR_idx != VarArgsNumGPR; ++GPR_idx) {
- SDValue Val = DAG.getRegister(GPR[GPR_idx], PtrVT);
- SDValue Store = DAG.getStore(Root, Val, FIN, NULL, 0);
- MemOps.push_back(Store);
- // Increment the address by four for the next argument to store
- SDValue PtrOff = DAG.getConstant(PtrVT.getSizeInBits()/8, PtrVT);
- FIN = DAG.getNode(ISD::ADD, PtrOff.getValueType(), FIN, PtrOff);
- }
- }
// If this function is vararg, store any remaining integer argument regs
// to their spots on the stack so that they may be loaded by deferencing the
// result of va_next.
for (; GPR_idx != Num_GPR_Regs; ++GPR_idx) {
unsigned VReg;
+
if (isPPC64)
- VReg = RegInfo.createVirtualRegister(&PPC::G8RCRegClass);
+ VReg = MF.addLiveIn(GPR[GPR_idx], &PPC::G8RCRegClass);
else
- VReg = RegInfo.createVirtualRegister(&PPC::GPRCRegClass);
+ VReg = MF.addLiveIn(GPR[GPR_idx], &PPC::GPRCRegClass);
- RegInfo.addLiveIn(GPR[GPR_idx], VReg);
- SDValue Val = DAG.getCopyFromReg(Root, VReg, PtrVT);
- SDValue Store = DAG.getStore(Val.getValue(1), Val, FIN, NULL, 0);
+ SDValue Val = DAG.getCopyFromReg(Root, dl, VReg, PtrVT);
+ SDValue Store = DAG.getStore(Val.getValue(1), dl, Val, FIN, NULL, 0);
MemOps.push_back(Store);
// Increment the address by four for the next argument to store
SDValue PtrOff = DAG.getConstant(PtrVT.getSizeInBits()/8, PtrVT);
- FIN = DAG.getNode(ISD::ADD, PtrOff.getValueType(), FIN, PtrOff);
- }
-
- // In ELF 32 ABI, the double arguments are stored to the VarArgsFrameIndex
- // on the stack.
- if (isELF32_ABI) {
- for (FPR_idx = 0; FPR_idx != VarArgsNumFPR; ++FPR_idx) {
- SDValue Val = DAG.getRegister(FPR[FPR_idx], MVT::f64);
- SDValue Store = DAG.getStore(Root, Val, FIN, NULL, 0);
- MemOps.push_back(Store);
- // Increment the address by eight for the next argument to store
- SDValue PtrOff = DAG.getConstant(MVT(MVT::f64).getSizeInBits()/8,
- PtrVT);
- FIN = DAG.getNode(ISD::ADD, PtrOff.getValueType(), FIN, PtrOff);
- }
-
- for (; FPR_idx != Num_FPR_Regs; ++FPR_idx) {
- unsigned VReg;
- VReg = RegInfo.createVirtualRegister(&PPC::F8RCRegClass);
-
- RegInfo.addLiveIn(FPR[FPR_idx], VReg);
- SDValue Val = DAG.getCopyFromReg(Root, VReg, MVT::f64);
- SDValue Store = DAG.getStore(Val.getValue(1), Val, FIN, NULL, 0);
- MemOps.push_back(Store);
- // Increment the address by eight for the next argument to store
- SDValue PtrOff = DAG.getConstant(MVT(MVT::f64).getSizeInBits()/8,
- PtrVT);
- FIN = DAG.getNode(ISD::ADD, PtrOff.getValueType(), FIN, PtrOff);
- }
+ FIN = DAG.getNode(ISD::ADD, dl, PtrOff.getValueType(), FIN, PtrOff);
}
}
-
+
if (!MemOps.empty())
- Root = DAG.getNode(ISD::TokenFactor, MVT::Other,&MemOps[0],MemOps.size());
+ Root = DAG.getNode(ISD::TokenFactor, dl,
+ MVT::Other, &MemOps[0], MemOps.size());
ArgValues.push_back(Root);
-
+
// Return the new list of results.
- return DAG.getMergeValues(Op.Val->getVTList(), &ArgValues[0],
- ArgValues.size());
+ return DAG.getNode(ISD::MERGE_VALUES, dl, Op.getNode()->getVTList(),
+ &ArgValues[0], ArgValues.size());
}
/// CalculateParameterAndLinkageAreaSize - Get the size of the paramter plus
-/// linkage area.
+/// linkage area for the Darwin ABI.
static unsigned
CalculateParameterAndLinkageAreaSize(SelectionDAG &DAG,
bool isPPC64,
- bool isMachoABI,
bool isVarArg,
unsigned CC,
- SDValue Call,
+ CallSDNode *TheCall,
unsigned &nAltivecParamsAtEnd) {
// Count how many bytes are to be pushed on the stack, including the linkage
// area, and parameter passing area. We start with 24/48 bytes, which is
// prereserved space for [SP][CR][LR][3 x unused].
- unsigned NumBytes = PPCFrameInfo::getLinkageSize(isPPC64, isMachoABI);
- unsigned NumOps = (Call.getNumOperands() - 5) / 2;
+ unsigned NumBytes = PPCFrameInfo::getLinkageSize(isPPC64, true);
+ unsigned NumOps = TheCall->getNumArgs();
unsigned PtrByteSize = isPPC64 ? 8 : 4;
// Add up all the space actually used.
// 16-byte aligned.
nAltivecParamsAtEnd = 0;
for (unsigned i = 0; i != NumOps; ++i) {
- SDValue Arg = Call.getOperand(5+2*i);
- SDValue Flag = Call.getOperand(5+2*i+1);
+ SDValue Arg = TheCall->getArg(i);
+ ISD::ArgFlagsTy Flags = TheCall->getArgFlags(i);
MVT ArgVT = Arg.getValueType();
// Varargs Altivec parameters are padded to a 16 byte boundary.
if (ArgVT==MVT::v4f32 || ArgVT==MVT::v4i32 ||
// Varargs and 64-bit Altivec parameters are padded to 16 byte boundary.
NumBytes = ((NumBytes+15)/16)*16;
}
- NumBytes += CalculateStackSlotSize(Arg, Flag, isVarArg, PtrByteSize);
+ NumBytes += CalculateStackSlotSize(Arg, Flags, PtrByteSize);
}
// Allow for Altivec parameters at the end, if needed.
// conservatively assume that it is needed. As such, make sure we have at
// least enough stack space for the caller to store the 8 GPRs.
NumBytes = std::max(NumBytes,
- PPCFrameInfo::getMinCallFrameSize(isPPC64, isMachoABI));
+ PPCFrameInfo::getMinCallFrameSize(isPPC64, true));
// Tail call needs the stack to be aligned.
if (CC==CallingConv::Fast && PerformTailCallOpt) {
/// calling conventions match, currently only fastcc supports tail calls, and
/// the function CALL is immediatly followed by a RET.
bool
-PPCTargetLowering::IsEligibleForTailCallOptimization(SDValue Call,
+PPCTargetLowering::IsEligibleForTailCallOptimization(CallSDNode *TheCall,
SDValue Ret,
SelectionDAG& DAG) const {
// Variable argument functions are not supported.
- if (!PerformTailCallOpt ||
- cast<ConstantSDNode>(Call.getOperand(2))->getValue() != 0) return false;
+ if (!PerformTailCallOpt || TheCall->isVarArg())
+ return false;
- if (CheckTailCallReturnConstraints(Call, Ret)) {
+ if (CheckTailCallReturnConstraints(TheCall, Ret)) {
MachineFunction &MF = DAG.getMachineFunction();
unsigned CallerCC = MF.getFunction()->getCallingConv();
- unsigned CalleeCC = cast<ConstantSDNode>(Call.getOperand(1))->getValue();
+ unsigned CalleeCC = TheCall->getCallingConv();
if (CalleeCC == CallingConv::Fast && CallerCC == CalleeCC) {
// Functions containing by val parameters are not supported.
- for (unsigned i = 0; i != ((Call.getNumOperands()-5)/2); i++) {
- ISD::ArgFlagsTy Flags = cast<ARG_FLAGSSDNode>(Call.getOperand(5+2*i+1))
- ->getArgFlags();
+ for (unsigned i = 0; i != TheCall->getNumArgs(); i++) {
+ ISD::ArgFlagsTy Flags = TheCall->getArgFlags(i);
if (Flags.isByVal()) return false;
}
- SDValue Callee = Call.getOperand(4);
+ SDValue Callee = TheCall->getCallee();
// Non PIC/GOT tail calls are supported.
if (getTargetMachine().getRelocationModel() != Reloc::PIC_)
return true;
static SDNode *isBLACompatibleAddress(SDValue Op, SelectionDAG &DAG) {
ConstantSDNode *C = dyn_cast<ConstantSDNode>(Op);
if (!C) return 0;
-
- int Addr = C->getValue();
+
+ int Addr = C->getZExtValue();
if ((Addr & 3) != 0 || // Low 2 bits are implicitly zero.
(Addr << 6 >> 6) != Addr)
return 0; // Top 6 bits have to be sext of immediate.
-
- return DAG.getConstant((int)C->getValue() >> 2,
- DAG.getTargetLoweringInfo().getPointerTy()).Val;
+
+ return DAG.getConstant((int)C->getZExtValue() >> 2,
+ DAG.getTargetLoweringInfo().getPointerTy()).getNode();
}
namespace {
StoreTailCallArgumentsToStackSlot(SelectionDAG &DAG,
SDValue Chain,
const SmallVector<TailCallArgumentInfo, 8> &TailCallArgs,
- SmallVector<SDValue, 8> &MemOpChains) {
+ SmallVector<SDValue, 8> &MemOpChains,
+ DebugLoc dl) {
for (unsigned i = 0, e = TailCallArgs.size(); i != e; ++i) {
SDValue Arg = TailCallArgs[i].Arg;
SDValue FIN = TailCallArgs[i].FrameIdxOp;
int FI = TailCallArgs[i].FrameIdx;
// Store relative to framepointer.
- MemOpChains.push_back(DAG.getStore(Chain, Arg, FIN,
+ MemOpChains.push_back(DAG.getStore(Chain, dl, Arg, FIN,
PseudoSourceValue::getFixedStack(FI),
0));
}
SDValue OldFP,
int SPDiff,
bool isPPC64,
- bool isMachoABI) {
+ bool isDarwinABI,
+ DebugLoc dl) {
if (SPDiff) {
// Calculate the new stack slot for the return address.
int SlotSize = isPPC64 ? 8 : 4;
int NewRetAddrLoc = SPDiff + PPCFrameInfo::getReturnSaveOffset(isPPC64,
- isMachoABI);
+ isDarwinABI);
int NewRetAddr = MF.getFrameInfo()->CreateFixedObject(SlotSize,
NewRetAddrLoc);
- int NewFPLoc = SPDiff + PPCFrameInfo::getFramePointerSaveOffset(isPPC64,
- isMachoABI);
- int NewFPIdx = MF.getFrameInfo()->CreateFixedObject(SlotSize, NewFPLoc);
-
MVT VT = isPPC64 ? MVT::i64 : MVT::i32;
SDValue NewRetAddrFrIdx = DAG.getFrameIndex(NewRetAddr, VT);
- Chain = DAG.getStore(Chain, OldRetAddr, NewRetAddrFrIdx,
+ Chain = DAG.getStore(Chain, dl, OldRetAddr, NewRetAddrFrIdx,
PseudoSourceValue::getFixedStack(NewRetAddr), 0);
- SDValue NewFramePtrIdx = DAG.getFrameIndex(NewFPIdx, VT);
- Chain = DAG.getStore(Chain, OldFP, NewFramePtrIdx,
- PseudoSourceValue::getFixedStack(NewFPIdx), 0);
+
+ // When using the SVR4 ABI there is no need to move the FP stack slot
+ // as the FP is never overwritten.
+ if (isDarwinABI) {
+ int NewFPLoc =
+ SPDiff + PPCFrameInfo::getFramePointerSaveOffset(isPPC64, isDarwinABI);
+ int NewFPIdx = MF.getFrameInfo()->CreateFixedObject(SlotSize, NewFPLoc);
+ SDValue NewFramePtrIdx = DAG.getFrameIndex(NewFPIdx, VT);
+ Chain = DAG.getStore(Chain, dl, OldFP, NewFramePtrIdx,
+ PseudoSourceValue::getFixedStack(NewFPIdx), 0);
+ }
}
return Chain;
}
/// stack slot. Returns the chain as result and the loaded frame pointers in
/// LROpOut/FPOpout. Used when tail calling.
SDValue PPCTargetLowering::EmitTailCallLoadFPAndRetAddr(SelectionDAG & DAG,
- int SPDiff,
- SDValue Chain,
- SDValue &LROpOut,
- SDValue &FPOpOut) {
+ int SPDiff,
+ SDValue Chain,
+ SDValue &LROpOut,
+ SDValue &FPOpOut,
+ bool isDarwinABI,
+ DebugLoc dl) {
if (SPDiff) {
// Load the LR and FP stack slot for later adjusting.
MVT VT = PPCSubTarget.isPPC64() ? MVT::i64 : MVT::i32;
LROpOut = getReturnAddrFrameIndex(DAG);
- LROpOut = DAG.getLoad(VT, Chain, LROpOut, NULL, 0);
- Chain = SDValue(LROpOut.Val, 1);
- FPOpOut = getFramePointerFrameIndex(DAG);
- FPOpOut = DAG.getLoad(VT, Chain, FPOpOut, NULL, 0);
- Chain = SDValue(FPOpOut.Val, 1);
+ LROpOut = DAG.getLoad(VT, dl, Chain, LROpOut, NULL, 0);
+ Chain = SDValue(LROpOut.getNode(), 1);
+
+ // When using the SVR4 ABI there is no need to load the FP stack slot
+ // as the FP is never overwritten.
+ if (isDarwinABI) {
+ FPOpOut = getFramePointerFrameIndex(DAG);
+ FPOpOut = DAG.getLoad(VT, dl, Chain, FPOpOut, NULL, 0);
+ Chain = SDValue(FPOpOut.getNode(), 1);
+ }
}
return Chain;
}
/// CreateCopyOfByValArgument - Make a copy of an aggregate at address specified
-/// by "Src" to address "Dst" of size "Size". Alignment information is
+/// by "Src" to address "Dst" of size "Size". Alignment information is
/// specified by the specific parameter attribute. The copy will be passed as
/// a byval function parameter.
/// Sometimes what we are copying is the end of a larger object, the part that
/// does not fit in registers.
-static SDValue
+static SDValue
CreateCopyOfByValArgument(SDValue Src, SDValue Dst, SDValue Chain,
ISD::ArgFlagsTy Flags, SelectionDAG &DAG,
- unsigned Size) {
- SDValue SizeNode = DAG.getConstant(Size, MVT::i32);
- return DAG.getMemcpy(Chain, Dst, Src, SizeNode, Flags.getByValAlign(), false,
- NULL, 0, NULL, 0);
+ DebugLoc dl) {
+ SDValue SizeNode = DAG.getConstant(Flags.getByValSize(), MVT::i32);
+ return DAG.getMemcpy(Chain, dl, Dst, Src, SizeNode, Flags.getByValAlign(),
+ false, NULL, 0, NULL, 0);
}
/// LowerMemOpCallTo - Store the argument to the stack or remember it in case of
SDValue Arg, SDValue PtrOff, int SPDiff,
unsigned ArgOffset, bool isPPC64, bool isTailCall,
bool isVector, SmallVector<SDValue, 8> &MemOpChains,
- SmallVector<TailCallArgumentInfo, 8>& TailCallArguments) {
+ SmallVector<TailCallArgumentInfo, 8>& TailCallArguments,
+ DebugLoc dl) {
MVT PtrVT = DAG.getTargetLoweringInfo().getPointerTy();
if (!isTailCall) {
if (isVector) {
StackPtr = DAG.getRegister(PPC::X1, MVT::i64);
else
StackPtr = DAG.getRegister(PPC::R1, MVT::i32);
- PtrOff = DAG.getNode(ISD::ADD, PtrVT, StackPtr,
+ PtrOff = DAG.getNode(ISD::ADD, dl, PtrVT, StackPtr,
DAG.getConstant(ArgOffset, PtrVT));
}
- MemOpChains.push_back(DAG.getStore(Chain, Arg, PtrOff, NULL, 0));
+ MemOpChains.push_back(DAG.getStore(Chain, dl, Arg, PtrOff, NULL, 0));
// Calculate and remember argument location.
} else CalculateTailCallArgDest(DAG, MF, isPPC64, Arg, SPDiff, ArgOffset,
TailCallArguments);
}
-SDValue PPCTargetLowering::LowerCALL(SDValue Op, SelectionDAG &DAG,
- const PPCSubtarget &Subtarget,
- TargetMachine &TM) {
- SDValue Chain = Op.getOperand(0);
- bool isVarArg = cast<ConstantSDNode>(Op.getOperand(2))->getValue() != 0;
- unsigned CC = cast<ConstantSDNode>(Op.getOperand(1))->getValue();
- bool isTailCall = cast<ConstantSDNode>(Op.getOperand(3))->getValue() != 0 &&
- CC == CallingConv::Fast && PerformTailCallOpt;
- SDValue Callee = Op.getOperand(4);
- unsigned NumOps = (Op.getNumOperands() - 5) / 2;
-
- bool isMachoABI = Subtarget.isMachoABI();
- bool isELF32_ABI = Subtarget.isELF32_ABI();
+static
+void PrepareTailCall(SelectionDAG &DAG, SDValue &InFlag, SDValue &Chain,
+ DebugLoc dl, bool isPPC64, int SPDiff, unsigned NumBytes,
+ SDValue LROp, SDValue FPOp, bool isDarwinABI,
+ SmallVector<TailCallArgumentInfo, 8> &TailCallArguments) {
+ MachineFunction &MF = DAG.getMachineFunction();
+
+ // Emit a sequence of copyto/copyfrom virtual registers for arguments that
+ // might overwrite each other in case of tail call optimization.
+ SmallVector<SDValue, 8> MemOpChains2;
+ // Do not flag preceeding copytoreg stuff together with the following stuff.
+ InFlag = SDValue();
+ StoreTailCallArgumentsToStackSlot(DAG, Chain, TailCallArguments,
+ MemOpChains2, dl);
+ if (!MemOpChains2.empty())
+ Chain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other,
+ &MemOpChains2[0], MemOpChains2.size());
+
+ // Store the return address to the appropriate stack slot.
+ Chain = EmitTailCallStoreFPAndRetAddr(DAG, MF, Chain, LROp, FPOp, SPDiff,
+ isPPC64, isDarwinABI, dl);
+
+ // Emit callseq_end just before tailcall node.
+ Chain = DAG.getCALLSEQ_END(Chain, DAG.getIntPtrConstant(NumBytes, true),
+ DAG.getIntPtrConstant(0, true), InFlag);
+ InFlag = Chain.getValue(1);
+}
+
+static
+unsigned PrepareCall(SelectionDAG &DAG, SDValue &Callee, SDValue &InFlag,
+ SDValue &Chain, DebugLoc dl, int SPDiff, bool isTailCall,
+ SmallVector<std::pair<unsigned, SDValue>, 8> &RegsToPass,
+ SmallVector<SDValue, 8> &Ops, std::vector<MVT> &NodeTys,
+ bool isSVR4ABI) {
+ MVT PtrVT = DAG.getTargetLoweringInfo().getPointerTy();
+ NodeTys.push_back(MVT::Other); // Returns a chain
+ NodeTys.push_back(MVT::Flag); // Returns a flag for retval copy to use.
+
+ unsigned CallOpc = isSVR4ABI ? PPCISD::CALL_SVR4 : PPCISD::CALL_Darwin;
+
+ // If the callee is a GlobalAddress/ExternalSymbol node (quite common, every
+ // direct call is) turn it into a TargetGlobalAddress/TargetExternalSymbol
+ // node so that legalize doesn't hack it.
+ if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee))
+ Callee = DAG.getTargetGlobalAddress(G->getGlobal(), Callee.getValueType());
+ else if (ExternalSymbolSDNode *S = dyn_cast<ExternalSymbolSDNode>(Callee))
+ Callee = DAG.getTargetExternalSymbol(S->getSymbol(), Callee.getValueType());
+ else if (SDNode *Dest = isBLACompatibleAddress(Callee, DAG))
+ // If this is an absolute destination address, use the munged value.
+ Callee = SDValue(Dest, 0);
+ else {
+ // Otherwise, this is an indirect call. We have to use a MTCTR/BCTRL pair
+ // to do the call, we can't use PPCISD::CALL.
+ SDValue MTCTROps[] = {Chain, Callee, InFlag};
+ Chain = DAG.getNode(PPCISD::MTCTR, dl, NodeTys, MTCTROps,
+ 2 + (InFlag.getNode() != 0));
+ InFlag = Chain.getValue(1);
+
+ NodeTys.clear();
+ NodeTys.push_back(MVT::Other);
+ NodeTys.push_back(MVT::Flag);
+ Ops.push_back(Chain);
+ CallOpc = isSVR4ABI ? PPCISD::BCTRL_SVR4 : PPCISD::BCTRL_Darwin;
+ Callee.setNode(0);
+ // Add CTR register as callee so a bctr can be emitted later.
+ if (isTailCall)
+ Ops.push_back(DAG.getRegister(PPC::CTR, PtrVT));
+ }
+
+ // If this is a direct call, pass the chain and the callee.
+ if (Callee.getNode()) {
+ Ops.push_back(Chain);
+ Ops.push_back(Callee);
+ }
+ // If this is a tail call add stack pointer delta.
+ if (isTailCall)
+ Ops.push_back(DAG.getConstant(SPDiff, MVT::i32));
+
+ // Add argument registers to the end of the list so that they are known live
+ // into the call.
+ for (unsigned i = 0, e = RegsToPass.size(); i != e; ++i)
+ Ops.push_back(DAG.getRegister(RegsToPass[i].first,
+ RegsToPass[i].second.getValueType()));
+
+ return CallOpc;
+}
+
+static SDValue LowerCallReturn(SDValue Op, SelectionDAG &DAG, TargetMachine &TM,
+ CallSDNode *TheCall, SDValue Chain,
+ SDValue InFlag) {
+ bool isVarArg = TheCall->isVarArg();
+ DebugLoc dl = TheCall->getDebugLoc();
+ SmallVector<SDValue, 16> ResultVals;
+ SmallVector<CCValAssign, 16> RVLocs;
+ unsigned CallerCC = DAG.getMachineFunction().getFunction()->getCallingConv();
+ CCState CCRetInfo(CallerCC, isVarArg, TM, RVLocs, DAG.getContext());
+ CCRetInfo.AnalyzeCallResult(TheCall, RetCC_PPC);
+
+ // Copy all of the result registers out of their specified physreg.
+ for (unsigned i = 0, e = RVLocs.size(); i != e; ++i) {
+ CCValAssign &VA = RVLocs[i];
+ MVT VT = VA.getValVT();
+ assert(VA.isRegLoc() && "Can only return in registers!");
+ Chain = DAG.getCopyFromReg(Chain, dl,
+ VA.getLocReg(), VT, InFlag).getValue(1);
+ ResultVals.push_back(Chain.getValue(0));
+ InFlag = Chain.getValue(2);
+ }
+
+ // If the function returns void, just return the chain.
+ if (RVLocs.empty())
+ return Chain;
+
+ // Otherwise, merge everything together with a MERGE_VALUES node.
+ ResultVals.push_back(Chain);
+ SDValue Res = DAG.getNode(ISD::MERGE_VALUES, dl, TheCall->getVTList(),
+ &ResultVals[0], ResultVals.size());
+ return Res.getValue(Op.getResNo());
+}
+
+static
+SDValue FinishCall(SelectionDAG &DAG, CallSDNode *TheCall, TargetMachine &TM,
+ SmallVector<std::pair<unsigned, SDValue>, 8> &RegsToPass,
+ SDValue Op, SDValue InFlag, SDValue Chain, SDValue &Callee,
+ int SPDiff, unsigned NumBytes) {
+ unsigned CC = TheCall->getCallingConv();
+ DebugLoc dl = TheCall->getDebugLoc();
+ bool isTailCall = TheCall->isTailCall()
+ && CC == CallingConv::Fast && PerformTailCallOpt;
+
+ std::vector<MVT> NodeTys;
+ SmallVector<SDValue, 8> Ops;
+ unsigned CallOpc = PrepareCall(DAG, Callee, InFlag, Chain, dl, SPDiff,
+ isTailCall, RegsToPass, Ops, NodeTys,
+ TM.getSubtarget<PPCSubtarget>().isSVR4ABI());
+
+ // When performing tail call optimization the callee pops its arguments off
+ // the stack. Account for this here so these bytes can be pushed back on in
+ // PPCRegisterInfo::eliminateCallFramePseudoInstr.
+ int BytesCalleePops =
+ (CC==CallingConv::Fast && PerformTailCallOpt) ? NumBytes : 0;
+
+ if (InFlag.getNode())
+ Ops.push_back(InFlag);
+
+ // Emit tail call.
+ if (isTailCall) {
+ assert(InFlag.getNode() &&
+ "Flag must be set. Depend on flag being set in LowerRET");
+ Chain = DAG.getNode(PPCISD::TAILCALL, dl,
+ TheCall->getVTList(), &Ops[0], Ops.size());
+ return SDValue(Chain.getNode(), Op.getResNo());
+ }
+
+ Chain = DAG.getNode(CallOpc, dl, NodeTys, &Ops[0], Ops.size());
+ InFlag = Chain.getValue(1);
+
+ Chain = DAG.getCALLSEQ_END(Chain, DAG.getIntPtrConstant(NumBytes, true),
+ DAG.getIntPtrConstant(BytesCalleePops, true),
+ InFlag);
+ if (TheCall->getValueType(0) != MVT::Other)
+ InFlag = Chain.getValue(1);
+
+ return LowerCallReturn(Op, DAG, TM, TheCall, Chain, InFlag);
+}
+
+SDValue PPCTargetLowering::LowerCALL_SVR4(SDValue Op, SelectionDAG &DAG,
+ const PPCSubtarget &Subtarget,
+ TargetMachine &TM) {
+ // See PPCTargetLowering::LowerFORMAL_ARGUMENTS_SVR4() for a description
+ // of the SVR4 ABI stack frame layout.
+ CallSDNode *TheCall = cast<CallSDNode>(Op.getNode());
+ SDValue Chain = TheCall->getChain();
+ bool isVarArg = TheCall->isVarArg();
+ unsigned CC = TheCall->getCallingConv();
+ assert((CC == CallingConv::C ||
+ CC == CallingConv::Fast) && "Unknown calling convention!");
+ bool isTailCall = TheCall->isTailCall()
+ && CC == CallingConv::Fast && PerformTailCallOpt;
+ SDValue Callee = TheCall->getCallee();
+ DebugLoc dl = TheCall->getDebugLoc();
+
+ MVT PtrVT = DAG.getTargetLoweringInfo().getPointerTy();
+ unsigned PtrByteSize = 4;
+
+ MachineFunction &MF = DAG.getMachineFunction();
+
+ // Mark this function as potentially containing a function that contains a
+ // tail call. As a consequence the frame pointer will be used for dynamicalloc
+ // and restoring the callers stack pointer in this functions epilog. This is
+ // done because by tail calling the called function might overwrite the value
+ // in this function's (MF) stack pointer stack slot 0(SP).
+ if (PerformTailCallOpt && CC==CallingConv::Fast)
+ MF.getInfo<PPCFunctionInfo>()->setHasFastCall();
+
+ // Count how many bytes are to be pushed on the stack, including the linkage
+ // area, parameter list area and the part of the local variable space which
+ // contains copies of aggregates which are passed by value.
+
+ // Assign locations to all of the outgoing arguments.
+ SmallVector<CCValAssign, 16> ArgLocs;
+ CCState CCInfo(CC, isVarArg, getTargetMachine(), ArgLocs, DAG.getContext());
+
+ // Reserve space for the linkage area on the stack.
+ CCInfo.AllocateStack(PPCFrameInfo::getLinkageSize(false, false), PtrByteSize);
+
+ if (isVarArg) {
+ // Handle fixed and variable vector arguments differently.
+ // Fixed vector arguments go into registers as long as registers are
+ // available. Variable vector arguments always go into memory.
+ unsigned NumArgs = TheCall->getNumArgs();
+ unsigned NumFixedArgs = TheCall->getNumFixedArgs();
+
+ for (unsigned i = 0; i != NumArgs; ++i) {
+ MVT ArgVT = TheCall->getArg(i).getValueType();
+ ISD::ArgFlagsTy ArgFlags = TheCall->getArgFlags(i);
+ bool Result;
+
+ if (i < NumFixedArgs) {
+ Result = CC_PPC_SVR4(i, ArgVT, ArgVT, CCValAssign::Full, ArgFlags,
+ CCInfo);
+ } else {
+ Result = CC_PPC_SVR4_VarArg(i, ArgVT, ArgVT, CCValAssign::Full,
+ ArgFlags, CCInfo);
+ }
+
+ if (Result) {
+#ifndef NDEBUG
+ cerr << "Call operand #" << i << " has unhandled type "
+ << ArgVT.getMVTString() << "\n";
+#endif
+ llvm_unreachable();
+ }
+ }
+ } else {
+ // All arguments are treated the same.
+ CCInfo.AnalyzeCallOperands(TheCall, CC_PPC_SVR4);
+ }
+
+ // Assign locations to all of the outgoing aggregate by value arguments.
+ SmallVector<CCValAssign, 16> ByValArgLocs;
+ CCState CCByValInfo(CC, isVarArg, getTargetMachine(), ByValArgLocs,
+ DAG.getContext());
+
+ // Reserve stack space for the allocations in CCInfo.
+ CCByValInfo.AllocateStack(CCInfo.getNextStackOffset(), PtrByteSize);
+
+ CCByValInfo.AnalyzeCallOperands(TheCall, CC_PPC_SVR4_ByVal);
+
+ // Size of the linkage area, parameter list area and the part of the local
+ // space variable where copies of aggregates which are passed by value are
+ // stored.
+ unsigned NumBytes = CCByValInfo.getNextStackOffset();
+
+ // Calculate by how many bytes the stack has to be adjusted in case of tail
+ // call optimization.
+ int SPDiff = CalculateTailCallSPDiff(DAG, isTailCall, NumBytes);
+
+ // Adjust the stack pointer for the new arguments...
+ // These operations are automatically eliminated by the prolog/epilog pass
+ Chain = DAG.getCALLSEQ_START(Chain, DAG.getIntPtrConstant(NumBytes, true));
+ SDValue CallSeqStart = Chain;
+
+ // Load the return address and frame pointer so it can be moved somewhere else
+ // later.
+ SDValue LROp, FPOp;
+ Chain = EmitTailCallLoadFPAndRetAddr(DAG, SPDiff, Chain, LROp, FPOp, false,
+ dl);
+
+ // Set up a copy of the stack pointer for use loading and storing any
+ // arguments that may not fit in the registers available for argument
+ // passing.
+ SDValue StackPtr = DAG.getRegister(PPC::R1, MVT::i32);
+
+ SmallVector<std::pair<unsigned, SDValue>, 8> RegsToPass;
+ SmallVector<TailCallArgumentInfo, 8> TailCallArguments;
+ SmallVector<SDValue, 8> MemOpChains;
+
+ // Walk the register/memloc assignments, inserting copies/loads.
+ for (unsigned i = 0, j = 0, e = ArgLocs.size();
+ i != e;
+ ++i) {
+ CCValAssign &VA = ArgLocs[i];
+ SDValue Arg = TheCall->getArg(i);
+ ISD::ArgFlagsTy Flags = TheCall->getArgFlags(i);
+
+ if (Flags.isByVal()) {
+ // Argument is an aggregate which is passed by value, thus we need to
+ // create a copy of it in the local variable space of the current stack
+ // frame (which is the stack frame of the caller) and pass the address of
+ // this copy to the callee.
+ assert((j < ByValArgLocs.size()) && "Index out of bounds!");
+ CCValAssign &ByValVA = ByValArgLocs[j++];
+ assert((VA.getValNo() == ByValVA.getValNo()) && "ValNo mismatch!");
+
+ // Memory reserved in the local variable space of the callers stack frame.
+ unsigned LocMemOffset = ByValVA.getLocMemOffset();
+
+ SDValue PtrOff = DAG.getIntPtrConstant(LocMemOffset);
+ PtrOff = DAG.getNode(ISD::ADD, dl, getPointerTy(), StackPtr, PtrOff);
+
+ // Create a copy of the argument in the local area of the current
+ // stack frame.
+ SDValue MemcpyCall =
+ CreateCopyOfByValArgument(Arg, PtrOff,
+ CallSeqStart.getNode()->getOperand(0),
+ Flags, DAG, dl);
+
+ // This must go outside the CALLSEQ_START..END.
+ SDValue NewCallSeqStart = DAG.getCALLSEQ_START(MemcpyCall,
+ CallSeqStart.getNode()->getOperand(1));
+ DAG.ReplaceAllUsesWith(CallSeqStart.getNode(),
+ NewCallSeqStart.getNode());
+ Chain = CallSeqStart = NewCallSeqStart;
+
+ // Pass the address of the aggregate copy on the stack either in a
+ // physical register or in the parameter list area of the current stack
+ // frame to the callee.
+ Arg = PtrOff;
+ }
+
+ if (VA.isRegLoc()) {
+ // Put argument in a physical register.
+ RegsToPass.push_back(std::make_pair(VA.getLocReg(), Arg));
+ } else {
+ // Put argument in the parameter list area of the current stack frame.
+ assert(VA.isMemLoc());
+ unsigned LocMemOffset = VA.getLocMemOffset();
+
+ if (!isTailCall) {
+ SDValue PtrOff = DAG.getIntPtrConstant(LocMemOffset);
+ PtrOff = DAG.getNode(ISD::ADD, dl, getPointerTy(), StackPtr, PtrOff);
+
+ MemOpChains.push_back(DAG.getStore(Chain, dl, Arg, PtrOff,
+ PseudoSourceValue::getStack(), LocMemOffset));
+ } else {
+ // Calculate and remember argument location.
+ CalculateTailCallArgDest(DAG, MF, false, Arg, SPDiff, LocMemOffset,
+ TailCallArguments);
+ }
+ }
+ }
+
+ if (!MemOpChains.empty())
+ Chain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other,
+ &MemOpChains[0], MemOpChains.size());
+
+ // Build a sequence of copy-to-reg nodes chained together with token chain
+ // and flag operands which copy the outgoing args into the appropriate regs.
+ SDValue InFlag;
+ for (unsigned i = 0, e = RegsToPass.size(); i != e; ++i) {
+ Chain = DAG.getCopyToReg(Chain, dl, RegsToPass[i].first,
+ RegsToPass[i].second, InFlag);
+ InFlag = Chain.getValue(1);
+ }
+
+ // Set CR6 to true if this is a vararg call.
+ if (isVarArg) {
+ SDValue SetCR(DAG.getTargetNode(PPC::CRSET, dl, MVT::i32), 0);
+ Chain = DAG.getCopyToReg(Chain, dl, PPC::CR1EQ, SetCR, InFlag);
+ InFlag = Chain.getValue(1);
+ }
+
+ if (isTailCall) {
+ PrepareTailCall(DAG, InFlag, Chain, dl, false, SPDiff, NumBytes, LROp, FPOp,
+ false, TailCallArguments);
+ }
+
+ return FinishCall(DAG, TheCall, TM, RegsToPass, Op, InFlag, Chain, Callee,
+ SPDiff, NumBytes);
+}
+
+SDValue PPCTargetLowering::LowerCALL_Darwin(SDValue Op, SelectionDAG &DAG,
+ const PPCSubtarget &Subtarget,
+ TargetMachine &TM) {
+ CallSDNode *TheCall = cast<CallSDNode>(Op.getNode());
+ SDValue Chain = TheCall->getChain();
+ bool isVarArg = TheCall->isVarArg();
+ unsigned CC = TheCall->getCallingConv();
+ bool isTailCall = TheCall->isTailCall()
+ && CC == CallingConv::Fast && PerformTailCallOpt;
+ SDValue Callee = TheCall->getCallee();
+ unsigned NumOps = TheCall->getNumArgs();
+ DebugLoc dl = TheCall->getDebugLoc();
MVT PtrVT = DAG.getTargetLoweringInfo().getPointerTy();
bool isPPC64 = PtrVT == MVT::i64;
unsigned PtrByteSize = isPPC64 ? 8 : 4;
-
+
MachineFunction &MF = DAG.getMachineFunction();
- // args_to_use will accumulate outgoing args for the PPCISD::CALL case in
- // SelectExpr to use to put the arguments in the appropriate registers.
- std::vector<SDValue> args_to_use;
-
// Mark this function as potentially containing a function that contains a
// tail call. As a consequence the frame pointer will be used for dynamicalloc
// and restoring the callers stack pointer in this functions epilog. This is
// area, and parameter passing area. We start with 24/48 bytes, which is
// prereserved space for [SP][CR][LR][3 x unused].
unsigned NumBytes =
- CalculateParameterAndLinkageAreaSize(DAG, isPPC64, isMachoABI, isVarArg, CC,
- Op, nAltivecParamsAtEnd);
+ CalculateParameterAndLinkageAreaSize(DAG, isPPC64, isVarArg, CC, TheCall,
+ nAltivecParamsAtEnd);
// Calculate by how many bytes the stack has to be adjusted in case of tail
// call optimization.
int SPDiff = CalculateTailCallSPDiff(DAG, isTailCall, NumBytes);
-
+
// Adjust the stack pointer for the new arguments...
// These operations are automatically eliminated by the prolog/epilog pass
- Chain = DAG.getCALLSEQ_START(Chain,
- DAG.getConstant(NumBytes, PtrVT));
+ Chain = DAG.getCALLSEQ_START(Chain, DAG.getIntPtrConstant(NumBytes, true));
SDValue CallSeqStart = Chain;
-
+
// Load the return address and frame pointer so it can be move somewhere else
// later.
SDValue LROp, FPOp;
- Chain = EmitTailCallLoadFPAndRetAddr(DAG, SPDiff, Chain, LROp, FPOp);
+ Chain = EmitTailCallLoadFPAndRetAddr(DAG, SPDiff, Chain, LROp, FPOp, true,
+ dl);
// Set up a copy of the stack pointer for use loading and storing any
// arguments that may not fit in the registers available for argument
StackPtr = DAG.getRegister(PPC::X1, MVT::i64);
else
StackPtr = DAG.getRegister(PPC::R1, MVT::i32);
-
+
// Figure out which arguments are going to go in registers, and which in
// memory. Also, if this is a vararg function, floating point operations
// must be stored to our stack, and loaded into integer regs as well, if
// any integer regs are available for argument passing.
- unsigned ArgOffset = PPCFrameInfo::getLinkageSize(isPPC64, isMachoABI);
+ unsigned ArgOffset = PPCFrameInfo::getLinkageSize(isPPC64, true);
unsigned GPR_idx = 0, FPR_idx = 0, VR_idx = 0;
-
+
static const unsigned GPR_32[] = { // 32-bit registers.
PPC::R3, PPC::R4, PPC::R5, PPC::R6,
PPC::R7, PPC::R8, PPC::R9, PPC::R10,
PPC::X7, PPC::X8, PPC::X9, PPC::X10,
};
static const unsigned *FPR = GetFPR(Subtarget);
-
+
static const unsigned VR[] = {
PPC::V2, PPC::V3, PPC::V4, PPC::V5, PPC::V6, PPC::V7, PPC::V8,
PPC::V9, PPC::V10, PPC::V11, PPC::V12, PPC::V13
};
const unsigned NumGPRs = array_lengthof(GPR_32);
- const unsigned NumFPRs = isMachoABI ? 13 : 8;
- const unsigned NumVRs = array_lengthof( VR);
-
+ const unsigned NumFPRs = 13;
+ const unsigned NumVRs = array_lengthof(VR);
+
const unsigned *GPR = isPPC64 ? GPR_64 : GPR_32;
- std::vector<std::pair<unsigned, SDValue> > RegsToPass;
+ SmallVector<std::pair<unsigned, SDValue>, 8> RegsToPass;
SmallVector<TailCallArgumentInfo, 8> TailCallArguments;
SmallVector<SDValue, 8> MemOpChains;
for (unsigned i = 0; i != NumOps; ++i) {
bool inMem = false;
- SDValue Arg = Op.getOperand(5+2*i);
- ISD::ArgFlagsTy Flags =
- cast<ARG_FLAGSSDNode>(Op.getOperand(5+2*i+1))->getArgFlags();
- // See if next argument requires stack alignment in ELF
- bool Align = Flags.isSplit();
+ SDValue Arg = TheCall->getArg(i);
+ ISD::ArgFlagsTy Flags = TheCall->getArgFlags(i);
// PtrOff will be used to store the current argument to the stack if a
// register cannot be found for it.
SDValue PtrOff;
-
- // Stack align in ELF 32
- if (isELF32_ABI && Align)
- PtrOff = DAG.getConstant(ArgOffset + ((ArgOffset/4) % 2) * PtrByteSize,
- StackPtr.getValueType());
- else
- PtrOff = DAG.getConstant(ArgOffset, StackPtr.getValueType());
- PtrOff = DAG.getNode(ISD::ADD, PtrVT, StackPtr, PtrOff);
+ PtrOff = DAG.getConstant(ArgOffset, StackPtr.getValueType());
+
+ PtrOff = DAG.getNode(ISD::ADD, dl, PtrVT, StackPtr, PtrOff);
// On PPC64, promote integers to 64-bit values.
if (isPPC64 && Arg.getValueType() == MVT::i32) {
// FIXME: Should this use ANY_EXTEND if neither sext nor zext?
unsigned ExtOp = Flags.isSExt() ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND;
- Arg = DAG.getNode(ExtOp, MVT::i64, Arg);
+ Arg = DAG.getNode(ExtOp, dl, MVT::i64, Arg);
}
- // FIXME Elf untested, what are alignment rules?
// FIXME memcpy is used way more than necessary. Correctness first.
if (Flags.isByVal()) {
unsigned Size = Flags.getByValSize();
- if (isELF32_ABI && Align) GPR_idx += (GPR_idx % 2);
if (Size==1 || Size==2) {
// Very small objects are passed right-justified.
// Everything else is passed left-justified.
MVT VT = (Size==1) ? MVT::i8 : MVT::i16;
if (GPR_idx != NumGPRs) {
- SDValue Load = DAG.getExtLoad(ISD::EXTLOAD, PtrVT, Chain, Arg,
+ SDValue Load = DAG.getExtLoad(ISD::EXTLOAD, dl, PtrVT, Chain, Arg,
NULL, 0, VT);
MemOpChains.push_back(Load.getValue(1));
RegsToPass.push_back(std::make_pair(GPR[GPR_idx++], Load));
- if (isMachoABI)
- ArgOffset += PtrByteSize;
+
+ ArgOffset += PtrByteSize;
} else {
SDValue Const = DAG.getConstant(4 - Size, PtrOff.getValueType());
- SDValue AddPtr = DAG.getNode(ISD::ADD, PtrVT, PtrOff, Const);
+ SDValue AddPtr = DAG.getNode(ISD::ADD, dl, PtrVT, PtrOff, Const);
SDValue MemcpyCall = CreateCopyOfByValArgument(Arg, AddPtr,
- CallSeqStart.Val->getOperand(0),
- Flags, DAG, Size);
+ CallSeqStart.getNode()->getOperand(0),
+ Flags, DAG, dl);
// This must go outside the CALLSEQ_START..END.
SDValue NewCallSeqStart = DAG.getCALLSEQ_START(MemcpyCall,
- CallSeqStart.Val->getOperand(1));
- DAG.ReplaceAllUsesWith(CallSeqStart.Val, NewCallSeqStart.Val);
+ CallSeqStart.getNode()->getOperand(1));
+ DAG.ReplaceAllUsesWith(CallSeqStart.getNode(),
+ NewCallSeqStart.getNode());
Chain = CallSeqStart = NewCallSeqStart;
ArgOffset += PtrByteSize;
}
// code assumes it is there, even if it could be put entirely into
// registers. (This is not what the doc says.)
SDValue MemcpyCall = CreateCopyOfByValArgument(Arg, PtrOff,
- CallSeqStart.Val->getOperand(0),
- Flags, DAG, Size);
+ CallSeqStart.getNode()->getOperand(0),
+ Flags, DAG, dl);
// This must go outside the CALLSEQ_START..END.
SDValue NewCallSeqStart = DAG.getCALLSEQ_START(MemcpyCall,
- CallSeqStart.Val->getOperand(1));
- DAG.ReplaceAllUsesWith(CallSeqStart.Val, NewCallSeqStart.Val);
+ CallSeqStart.getNode()->getOperand(1));
+ DAG.ReplaceAllUsesWith(CallSeqStart.getNode(), NewCallSeqStart.getNode());
Chain = CallSeqStart = NewCallSeqStart;
// And copy the pieces of it that fit into registers.
for (unsigned j=0; j<Size; j+=PtrByteSize) {
SDValue Const = DAG.getConstant(j, PtrOff.getValueType());
- SDValue AddArg = DAG.getNode(ISD::ADD, PtrVT, Arg, Const);
+ SDValue AddArg = DAG.getNode(ISD::ADD, dl, PtrVT, Arg, Const);
if (GPR_idx != NumGPRs) {
- SDValue Load = DAG.getLoad(PtrVT, Chain, AddArg, NULL, 0);
+ SDValue Load = DAG.getLoad(PtrVT, dl, Chain, AddArg, NULL, 0);
MemOpChains.push_back(Load.getValue(1));
RegsToPass.push_back(std::make_pair(GPR[GPR_idx++], Load));
- if (isMachoABI)
- ArgOffset += PtrByteSize;
+ ArgOffset += PtrByteSize;
} else {
ArgOffset += ((Size - j + PtrByteSize-1)/PtrByteSize)*PtrByteSize;
break;
}
switch (Arg.getValueType().getSimpleVT()) {
- default: assert(0 && "Unexpected ValueType for argument!");
+ default: LLVM_UNREACHABLE("Unexpected ValueType for argument!");
case MVT::i32:
case MVT::i64:
- // Double word align in ELF
- if (isELF32_ABI && Align) GPR_idx += (GPR_idx % 2);
if (GPR_idx != NumGPRs) {
RegsToPass.push_back(std::make_pair(GPR[GPR_idx++], Arg));
} else {
LowerMemOpCallTo(DAG, MF, Chain, Arg, PtrOff, SPDiff, ArgOffset,
isPPC64, isTailCall, false, MemOpChains,
- TailCallArguments);
+ TailCallArguments, dl);
inMem = true;
}
- if (inMem || isMachoABI) {
- // Stack align in ELF
- if (isELF32_ABI && Align)
- ArgOffset += ((ArgOffset/4) % 2) * PtrByteSize;
-
- ArgOffset += PtrByteSize;
- }
+ ArgOffset += PtrByteSize;
break;
case MVT::f32:
case MVT::f64:
RegsToPass.push_back(std::make_pair(FPR[FPR_idx++], Arg));
if (isVarArg) {
- SDValue Store = DAG.getStore(Chain, Arg, PtrOff, NULL, 0);
+ SDValue Store = DAG.getStore(Chain, dl, Arg, PtrOff, NULL, 0);
MemOpChains.push_back(Store);
// Float varargs are always shadowed in available integer registers
if (GPR_idx != NumGPRs) {
- SDValue Load = DAG.getLoad(PtrVT, Store, PtrOff, NULL, 0);
+ SDValue Load = DAG.getLoad(PtrVT, dl, Store, PtrOff, NULL, 0);
MemOpChains.push_back(Load.getValue(1));
- if (isMachoABI) RegsToPass.push_back(std::make_pair(GPR[GPR_idx++],
- Load));
+ RegsToPass.push_back(std::make_pair(GPR[GPR_idx++], Load));
}
if (GPR_idx != NumGPRs && Arg.getValueType() == MVT::f64 && !isPPC64){
SDValue ConstFour = DAG.getConstant(4, PtrOff.getValueType());
- PtrOff = DAG.getNode(ISD::ADD, PtrVT, PtrOff, ConstFour);
- SDValue Load = DAG.getLoad(PtrVT, Store, PtrOff, NULL, 0);
+ PtrOff = DAG.getNode(ISD::ADD, dl, PtrVT, PtrOff, ConstFour);
+ SDValue Load = DAG.getLoad(PtrVT, dl, Store, PtrOff, NULL, 0);
MemOpChains.push_back(Load.getValue(1));
- if (isMachoABI) RegsToPass.push_back(std::make_pair(GPR[GPR_idx++],
- Load));
+ RegsToPass.push_back(std::make_pair(GPR[GPR_idx++], Load));
}
} else {
// If we have any FPRs remaining, we may also have GPRs remaining.
// Args passed in FPRs consume either 1 (f32) or 2 (f64) available
// GPRs.
- if (isMachoABI) {
- if (GPR_idx != NumGPRs)
- ++GPR_idx;
- if (GPR_idx != NumGPRs && Arg.getValueType() == MVT::f64 &&
- !isPPC64) // PPC64 has 64-bit GPR's obviously :)
- ++GPR_idx;
- }
+ if (GPR_idx != NumGPRs)
+ ++GPR_idx;
+ if (GPR_idx != NumGPRs && Arg.getValueType() == MVT::f64 &&
+ !isPPC64) // PPC64 has 64-bit GPR's obviously :)
+ ++GPR_idx;
}
} else {
LowerMemOpCallTo(DAG, MF, Chain, Arg, PtrOff, SPDiff, ArgOffset,
isPPC64, isTailCall, false, MemOpChains,
- TailCallArguments);
+ TailCallArguments, dl);
inMem = true;
}
- if (inMem || isMachoABI) {
- // Stack align in ELF
- if (isELF32_ABI && Align)
- ArgOffset += ((ArgOffset/4) % 2) * PtrByteSize;
- if (isPPC64)
- ArgOffset += 8;
- else
- ArgOffset += Arg.getValueType() == MVT::f32 ? 4 : 8;
- }
+ if (isPPC64)
+ ArgOffset += 8;
+ else
+ ArgOffset += Arg.getValueType() == MVT::f32 ? 4 : 8;
break;
case MVT::v4f32:
case MVT::v4i32:
case MVT::v16i8:
if (isVarArg) {
// These go aligned on the stack, or in the corresponding R registers
- // when within range. The Darwin PPC ABI doc claims they also go in
+ // when within range. The Darwin PPC ABI doc claims they also go in
// V registers; in fact gcc does this only for arguments that are
// prototyped, not for those that match the ... We do it for all
// arguments, seems to work.
}
// We could elide this store in the case where the object fits
// entirely in R registers. Maybe later.
- PtrOff = DAG.getNode(ISD::ADD, PtrVT, StackPtr,
+ PtrOff = DAG.getNode(ISD::ADD, dl, PtrVT, StackPtr,
DAG.getConstant(ArgOffset, PtrVT));
- SDValue Store = DAG.getStore(Chain, Arg, PtrOff, NULL, 0);
+ SDValue Store = DAG.getStore(Chain, dl, Arg, PtrOff, NULL, 0);
MemOpChains.push_back(Store);
if (VR_idx != NumVRs) {
- SDValue Load = DAG.getLoad(MVT::v4f32, Store, PtrOff, NULL, 0);
+ SDValue Load = DAG.getLoad(MVT::v4f32, dl, Store, PtrOff, NULL, 0);
MemOpChains.push_back(Load.getValue(1));
RegsToPass.push_back(std::make_pair(VR[VR_idx++], Load));
}
for (unsigned i=0; i<16; i+=PtrByteSize) {
if (GPR_idx == NumGPRs)
break;
- SDValue Ix = DAG.getNode(ISD::ADD, PtrVT, PtrOff,
+ SDValue Ix = DAG.getNode(ISD::ADD, dl, PtrVT, PtrOff,
DAG.getConstant(i, PtrVT));
- SDValue Load = DAG.getLoad(PtrVT, Store, Ix, NULL, 0);
+ SDValue Load = DAG.getLoad(PtrVT, dl, Store, Ix, NULL, 0);
MemOpChains.push_back(Load.getValue(1));
RegsToPass.push_back(std::make_pair(GPR[GPR_idx++], Load));
}
// We are emitting Altivec params in order.
LowerMemOpCallTo(DAG, MF, Chain, Arg, PtrOff, SPDiff, ArgOffset,
isPPC64, isTailCall, true, MemOpChains,
- TailCallArguments);
+ TailCallArguments, dl);
ArgOffset += 16;
}
break;
ArgOffset = ((ArgOffset+15)/16)*16;
ArgOffset += 12*16;
for (unsigned i = 0; i != NumOps; ++i) {
- SDValue Arg = Op.getOperand(5+2*i);
+ SDValue Arg = TheCall->getArg(i);
MVT ArgType = Arg.getValueType();
if (ArgType==MVT::v4f32 || ArgType==MVT::v4i32 ||
ArgType==MVT::v8i16 || ArgType==MVT::v16i8) {
// We are emitting Altivec params in order.
LowerMemOpCallTo(DAG, MF, Chain, Arg, PtrOff, SPDiff, ArgOffset,
isPPC64, isTailCall, true, MemOpChains,
- TailCallArguments);
+ TailCallArguments, dl);
ArgOffset += 16;
}
}
}
if (!MemOpChains.empty())
- Chain = DAG.getNode(ISD::TokenFactor, MVT::Other,
+ Chain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other,
&MemOpChains[0], MemOpChains.size());
-
+
// Build a sequence of copy-to-reg nodes chained together with token chain
// and flag operands which copy the outgoing args into the appropriate regs.
SDValue InFlag;
for (unsigned i = 0, e = RegsToPass.size(); i != e; ++i) {
- Chain = DAG.getCopyToReg(Chain, RegsToPass[i].first, RegsToPass[i].second,
- InFlag);
- InFlag = Chain.getValue(1);
- }
-
- // With the ELF 32 ABI, set CR6 to true if this is a vararg call.
- if (isVarArg && isELF32_ABI) {
- SDValue SetCR(DAG.getTargetNode(PPC::CRSET, MVT::i32), 0);
- Chain = DAG.getCopyToReg(Chain, PPC::CR1EQ, SetCR, InFlag);
- InFlag = Chain.getValue(1);
- }
-
- // Emit a sequence of copyto/copyfrom virtual registers for arguments that
- // might overwrite each other in case of tail call optimization.
- if (isTailCall) {
- SmallVector<SDValue, 8> MemOpChains2;
- // Do not flag preceeding copytoreg stuff together with the following stuff.
- InFlag = SDValue();
- StoreTailCallArgumentsToStackSlot(DAG, Chain, TailCallArguments,
- MemOpChains2);
- if (!MemOpChains2.empty())
- Chain = DAG.getNode(ISD::TokenFactor, MVT::Other,
- &MemOpChains2[0], MemOpChains2.size());
-
- // Store the return address to the appropriate stack slot.
- Chain = EmitTailCallStoreFPAndRetAddr(DAG, MF, Chain, LROp, FPOp, SPDiff,
- isPPC64, isMachoABI);
- }
-
- // Emit callseq_end just before tailcall node.
- if (isTailCall) {
- SmallVector<SDValue, 8> CallSeqOps;
- SDVTList CallSeqNodeTys = DAG.getVTList(MVT::Other, MVT::Flag);
- CallSeqOps.push_back(Chain);
- CallSeqOps.push_back(DAG.getIntPtrConstant(NumBytes));
- CallSeqOps.push_back(DAG.getIntPtrConstant(0));
- if (InFlag.Val)
- CallSeqOps.push_back(InFlag);
- Chain = DAG.getNode(ISD::CALLSEQ_END, CallSeqNodeTys, &CallSeqOps[0],
- CallSeqOps.size());
- InFlag = Chain.getValue(1);
- }
-
- std::vector<MVT> NodeTys;
- NodeTys.push_back(MVT::Other); // Returns a chain
- NodeTys.push_back(MVT::Flag); // Returns a flag for retval copy to use.
-
- SmallVector<SDValue, 8> Ops;
- unsigned CallOpc = isMachoABI? PPCISD::CALL_Macho : PPCISD::CALL_ELF;
-
- // If the callee is a GlobalAddress/ExternalSymbol node (quite common, every
- // direct call is) turn it into a TargetGlobalAddress/TargetExternalSymbol
- // node so that legalize doesn't hack it.
- if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee))
- Callee = DAG.getTargetGlobalAddress(G->getGlobal(), Callee.getValueType());
- else if (ExternalSymbolSDNode *S = dyn_cast<ExternalSymbolSDNode>(Callee))
- Callee = DAG.getTargetExternalSymbol(S->getSymbol(), Callee.getValueType());
- else if (SDNode *Dest = isBLACompatibleAddress(Callee, DAG))
- // If this is an absolute destination address, use the munged value.
- Callee = SDValue(Dest, 0);
- else {
- // Otherwise, this is an indirect call. We have to use a MTCTR/BCTRL pair
- // to do the call, we can't use PPCISD::CALL.
- SDValue MTCTROps[] = {Chain, Callee, InFlag};
- Chain = DAG.getNode(PPCISD::MTCTR, NodeTys, MTCTROps, 2+(InFlag.Val!=0));
+ Chain = DAG.getCopyToReg(Chain, dl, RegsToPass[i].first,
+ RegsToPass[i].second, InFlag);
InFlag = Chain.getValue(1);
-
- // Copy the callee address into R12/X12 on darwin.
- if (isMachoABI) {
- unsigned Reg = Callee.getValueType() == MVT::i32 ? PPC::R12 : PPC::X12;
- Chain = DAG.getCopyToReg(Chain, Reg, Callee, InFlag);
- InFlag = Chain.getValue(1);
- }
-
- NodeTys.clear();
- NodeTys.push_back(MVT::Other);
- NodeTys.push_back(MVT::Flag);
- Ops.push_back(Chain);
- CallOpc = isMachoABI ? PPCISD::BCTRL_Macho : PPCISD::BCTRL_ELF;
- Callee.Val = 0;
- // Add CTR register as callee so a bctr can be emitted later.
- if (isTailCall)
- Ops.push_back(DAG.getRegister(PPC::CTR, getPointerTy()));
- }
-
- // If this is a direct call, pass the chain and the callee.
- if (Callee.Val) {
- Ops.push_back(Chain);
- Ops.push_back(Callee);
}
- // If this is a tail call add stack pointer delta.
- if (isTailCall)
- Ops.push_back(DAG.getConstant(SPDiff, MVT::i32));
-
- // Add argument registers to the end of the list so that they are known live
- // into the call.
- for (unsigned i = 0, e = RegsToPass.size(); i != e; ++i)
- Ops.push_back(DAG.getRegister(RegsToPass[i].first,
- RegsToPass[i].second.getValueType()));
-
- // When performing tail call optimization the callee pops its arguments off
- // the stack. Account for this here so these bytes can be pushed back on in
- // PPCRegisterInfo::eliminateCallFramePseudoInstr.
- int BytesCalleePops =
- (CC==CallingConv::Fast && PerformTailCallOpt) ? NumBytes : 0;
-
- if (InFlag.Val)
- Ops.push_back(InFlag);
- // Emit tail call.
if (isTailCall) {
- assert(InFlag.Val &&
- "Flag must be set. Depend on flag being set in LowerRET");
- Chain = DAG.getNode(PPCISD::TAILCALL,
- Op.Val->getVTList(), &Ops[0], Ops.size());
- return SDValue(Chain.Val, Op.getResNo());
- }
-
- Chain = DAG.getNode(CallOpc, NodeTys, &Ops[0], Ops.size());
- InFlag = Chain.getValue(1);
-
- Chain = DAG.getCALLSEQ_END(Chain,
- DAG.getConstant(NumBytes, PtrVT),
- DAG.getConstant(BytesCalleePops, PtrVT),
- InFlag);
- if (Op.Val->getValueType(0) != MVT::Other)
- InFlag = Chain.getValue(1);
-
- SmallVector<SDValue, 16> ResultVals;
- SmallVector<CCValAssign, 16> RVLocs;
- unsigned CallerCC = DAG.getMachineFunction().getFunction()->getCallingConv();
- CCState CCInfo(CallerCC, isVarArg, TM, RVLocs);
- CCInfo.AnalyzeCallResult(Op.Val, RetCC_PPC);
-
- // Copy all of the result registers out of their specified physreg.
- for (unsigned i = 0, e = RVLocs.size(); i != e; ++i) {
- CCValAssign &VA = RVLocs[i];
- MVT VT = VA.getValVT();
- assert(VA.isRegLoc() && "Can only return in registers!");
- Chain = DAG.getCopyFromReg(Chain, VA.getLocReg(), VT, InFlag).getValue(1);
- ResultVals.push_back(Chain.getValue(0));
- InFlag = Chain.getValue(2);
+ PrepareTailCall(DAG, InFlag, Chain, dl, isPPC64, SPDiff, NumBytes, LROp,
+ FPOp, true, TailCallArguments);
}
- // If the function returns void, just return the chain.
- if (RVLocs.empty())
- return Chain;
-
- // Otherwise, merge everything together with a MERGE_VALUES node.
- ResultVals.push_back(Chain);
- SDValue Res = DAG.getMergeValues(Op.Val->getVTList(), &ResultVals[0],
- ResultVals.size());
- return Res.getValue(Op.getResNo());
+ return FinishCall(DAG, TheCall, TM, RegsToPass, Op, InFlag, Chain, Callee,
+ SPDiff, NumBytes);
}
-SDValue PPCTargetLowering::LowerRET(SDValue Op, SelectionDAG &DAG,
+SDValue PPCTargetLowering::LowerRET(SDValue Op, SelectionDAG &DAG,
TargetMachine &TM) {
SmallVector<CCValAssign, 16> RVLocs;
unsigned CC = DAG.getMachineFunction().getFunction()->getCallingConv();
bool isVarArg = DAG.getMachineFunction().getFunction()->isVarArg();
- CCState CCInfo(CC, isVarArg, TM, RVLocs);
- CCInfo.AnalyzeReturn(Op.Val, RetCC_PPC);
-
+ DebugLoc dl = Op.getDebugLoc();
+ CCState CCInfo(CC, isVarArg, TM, RVLocs, DAG.getContext());
+ CCInfo.AnalyzeReturn(Op.getNode(), RetCC_PPC);
+
// If this is the first return lowered for this function, add the regs to the
// liveout set for the function.
if (DAG.getMachineFunction().getRegInfo().liveout_empty()) {
for (unsigned i=3; i < TailCall.getNumOperands()-1; i++) {
Operands.push_back(Chain.getOperand(i));
}
- return DAG.getNode(PPCISD::TC_RETURN, MVT::Other, &Operands[0],
+ return DAG.getNode(PPCISD::TC_RETURN, dl, MVT::Other, &Operands[0],
Operands.size());
}
SDValue Flag;
-
+
// Copy the result values into the output registers.
for (unsigned i = 0; i != RVLocs.size(); ++i) {
CCValAssign &VA = RVLocs[i];
assert(VA.isRegLoc() && "Can only return in registers!");
- Chain = DAG.getCopyToReg(Chain, VA.getLocReg(), Op.getOperand(i*2+1), Flag);
+ Chain = DAG.getCopyToReg(Chain, dl, VA.getLocReg(),
+ Op.getOperand(i*2+1), Flag);
Flag = Chain.getValue(1);
}
- if (Flag.Val)
- return DAG.getNode(PPCISD::RET_FLAG, MVT::Other, Chain, Flag);
+ if (Flag.getNode())
+ return DAG.getNode(PPCISD::RET_FLAG, dl, MVT::Other, Chain, Flag);
else
- return DAG.getNode(PPCISD::RET_FLAG, MVT::Other, Chain);
+ return DAG.getNode(PPCISD::RET_FLAG, dl, MVT::Other, Chain);
}
SDValue PPCTargetLowering::LowerSTACKRESTORE(SDValue Op, SelectionDAG &DAG,
const PPCSubtarget &Subtarget) {
// When we pop the dynamic allocation we need to restore the SP link.
-
+ DebugLoc dl = Op.getDebugLoc();
+
// Get the corect type for pointers.
MVT PtrVT = DAG.getTargetLoweringInfo().getPointerTy();
// Get the operands for the STACKRESTORE.
SDValue Chain = Op.getOperand(0);
SDValue SaveSP = Op.getOperand(1);
-
+
// Load the old link SP.
- SDValue LoadLinkSP = DAG.getLoad(PtrVT, Chain, StackPtr, NULL, 0);
-
+ SDValue LoadLinkSP = DAG.getLoad(PtrVT, dl, Chain, StackPtr, NULL, 0);
+
// Restore the stack pointer.
- Chain = DAG.getCopyToReg(LoadLinkSP.getValue(1), SP, SaveSP);
-
+ Chain = DAG.getCopyToReg(LoadLinkSP.getValue(1), dl, SP, SaveSP);
+
// Store the old link SP.
- return DAG.getStore(Chain, LoadLinkSP, StackPtr, NULL, 0);
+ return DAG.getStore(Chain, dl, LoadLinkSP, StackPtr, NULL, 0);
}
PPCTargetLowering::getReturnAddrFrameIndex(SelectionDAG & DAG) const {
MachineFunction &MF = DAG.getMachineFunction();
bool IsPPC64 = PPCSubTarget.isPPC64();
- bool isMachoABI = PPCSubTarget.isMachoABI();
+ bool isDarwinABI = PPCSubTarget.isDarwinABI();
MVT PtrVT = DAG.getTargetLoweringInfo().getPointerTy();
// Get current frame pointer save index. The users of this index will be
// If the frame pointer save index hasn't been defined yet.
if (!RASI) {
// Find out what the fix offset of the frame pointer save area.
- int LROffset = PPCFrameInfo::getReturnSaveOffset(IsPPC64, isMachoABI);
+ int LROffset = PPCFrameInfo::getReturnSaveOffset(IsPPC64, isDarwinABI);
// Allocate the frame index for frame pointer save area.
RASI = MF.getFrameInfo()->CreateFixedObject(IsPPC64? 8 : 4, LROffset);
// Save the result.
PPCTargetLowering::getFramePointerFrameIndex(SelectionDAG & DAG) const {
MachineFunction &MF = DAG.getMachineFunction();
bool IsPPC64 = PPCSubTarget.isPPC64();
- bool isMachoABI = PPCSubTarget.isMachoABI();
+ bool isDarwinABI = PPCSubTarget.isDarwinABI();
MVT PtrVT = DAG.getTargetLoweringInfo().getPointerTy();
// Get current frame pointer save index. The users of this index will be
// If the frame pointer save index hasn't been defined yet.
if (!FPSI) {
// Find out what the fix offset of the frame pointer save area.
- int FPOffset = PPCFrameInfo::getFramePointerSaveOffset(IsPPC64, isMachoABI);
-
+ int FPOffset = PPCFrameInfo::getFramePointerSaveOffset(IsPPC64,
+ isDarwinABI);
+
// Allocate the frame index for frame pointer save area.
- FPSI = MF.getFrameInfo()->CreateFixedObject(IsPPC64? 8 : 4, FPOffset);
+ FPSI = MF.getFrameInfo()->CreateFixedObject(IsPPC64? 8 : 4, FPOffset);
// Save the result.
- FI->setFramePointerSaveIndex(FPSI);
+ FI->setFramePointerSaveIndex(FPSI);
}
return DAG.getFrameIndex(FPSI, PtrVT);
}
// Get the inputs.
SDValue Chain = Op.getOperand(0);
SDValue Size = Op.getOperand(1);
-
+ DebugLoc dl = Op.getDebugLoc();
+
// Get the corect type for pointers.
MVT PtrVT = DAG.getTargetLoweringInfo().getPointerTy();
// Negate the size.
- SDValue NegSize = DAG.getNode(ISD::SUB, PtrVT,
+ SDValue NegSize = DAG.getNode(ISD::SUB, dl, PtrVT,
DAG.getConstant(0, PtrVT), Size);
// Construct a node for the frame pointer save index.
SDValue FPSIdx = getFramePointerFrameIndex(DAG);
// Build a DYNALLOC node.
SDValue Ops[3] = { Chain, NegSize, FPSIdx };
SDVTList VTs = DAG.getVTList(PtrVT, MVT::Other);
- return DAG.getNode(PPCISD::DYNALLOC, VTs, Ops, 3);
+ return DAG.getNode(PPCISD::DYNALLOC, dl, VTs, Ops, 3);
}
/// LowerSELECT_CC - Lower floating point select_cc's into fsel instruction when
// Not FP? Not a fsel.
if (!Op.getOperand(0).getValueType().isFloatingPoint() ||
!Op.getOperand(2).getValueType().isFloatingPoint())
- return SDValue();
-
+ return Op;
+
ISD::CondCode CC = cast<CondCodeSDNode>(Op.getOperand(4))->get();
-
+
// Cannot handle SETEQ/SETNE.
- if (CC == ISD::SETEQ || CC == ISD::SETNE) return SDValue();
-
+ if (CC == ISD::SETEQ || CC == ISD::SETNE) return Op;
+
MVT ResVT = Op.getValueType();
MVT CmpVT = Op.getOperand(0).getValueType();
SDValue LHS = Op.getOperand(0), RHS = Op.getOperand(1);
SDValue TV = Op.getOperand(2), FV = Op.getOperand(3);
-
+ DebugLoc dl = Op.getDebugLoc();
+
// If the RHS of the comparison is a 0.0, we don't need to do the
// subtraction at all.
if (isFloatingPointZero(RHS))
switch (CC) {
default: break; // SETUO etc aren't handled by fsel.
case ISD::SETULT:
- case ISD::SETOLT:
case ISD::SETLT:
std::swap(TV, FV); // fsel is natively setge, swap operands for setlt
- case ISD::SETUGE:
case ISD::SETOGE:
case ISD::SETGE:
if (LHS.getValueType() == MVT::f32) // Comparison is always 64-bits
- LHS = DAG.getNode(ISD::FP_EXTEND, MVT::f64, LHS);
- return DAG.getNode(PPCISD::FSEL, ResVT, LHS, TV, FV);
+ LHS = DAG.getNode(ISD::FP_EXTEND, dl, MVT::f64, LHS);
+ return DAG.getNode(PPCISD::FSEL, dl, ResVT, LHS, TV, FV);
case ISD::SETUGT:
- case ISD::SETOGT:
case ISD::SETGT:
std::swap(TV, FV); // fsel is natively setge, swap operands for setlt
- case ISD::SETULE:
case ISD::SETOLE:
case ISD::SETLE:
if (LHS.getValueType() == MVT::f32) // Comparison is always 64-bits
- LHS = DAG.getNode(ISD::FP_EXTEND, MVT::f64, LHS);
- return DAG.getNode(PPCISD::FSEL, ResVT,
- DAG.getNode(ISD::FNEG, MVT::f64, LHS), TV, FV);
+ LHS = DAG.getNode(ISD::FP_EXTEND, dl, MVT::f64, LHS);
+ return DAG.getNode(PPCISD::FSEL, dl, ResVT,
+ DAG.getNode(ISD::FNEG, dl, MVT::f64, LHS), TV, FV);
}
-
+
SDValue Cmp;
switch (CC) {
default: break; // SETUO etc aren't handled by fsel.
case ISD::SETULT:
- case ISD::SETOLT:
case ISD::SETLT:
- Cmp = DAG.getNode(ISD::FSUB, CmpVT, LHS, RHS);
+ Cmp = DAG.getNode(ISD::FSUB, dl, CmpVT, LHS, RHS);
if (Cmp.getValueType() == MVT::f32) // Comparison is always 64-bits
- Cmp = DAG.getNode(ISD::FP_EXTEND, MVT::f64, Cmp);
- return DAG.getNode(PPCISD::FSEL, ResVT, Cmp, FV, TV);
- case ISD::SETUGE:
+ Cmp = DAG.getNode(ISD::FP_EXTEND, dl, MVT::f64, Cmp);
+ return DAG.getNode(PPCISD::FSEL, dl, ResVT, Cmp, FV, TV);
case ISD::SETOGE:
case ISD::SETGE:
- Cmp = DAG.getNode(ISD::FSUB, CmpVT, LHS, RHS);
+ Cmp = DAG.getNode(ISD::FSUB, dl, CmpVT, LHS, RHS);
if (Cmp.getValueType() == MVT::f32) // Comparison is always 64-bits
- Cmp = DAG.getNode(ISD::FP_EXTEND, MVT::f64, Cmp);
- return DAG.getNode(PPCISD::FSEL, ResVT, Cmp, TV, FV);
+ Cmp = DAG.getNode(ISD::FP_EXTEND, dl, MVT::f64, Cmp);
+ return DAG.getNode(PPCISD::FSEL, dl, ResVT, Cmp, TV, FV);
case ISD::SETUGT:
- case ISD::SETOGT:
case ISD::SETGT:
- Cmp = DAG.getNode(ISD::FSUB, CmpVT, RHS, LHS);
+ Cmp = DAG.getNode(ISD::FSUB, dl, CmpVT, RHS, LHS);
if (Cmp.getValueType() == MVT::f32) // Comparison is always 64-bits
- Cmp = DAG.getNode(ISD::FP_EXTEND, MVT::f64, Cmp);
- return DAG.getNode(PPCISD::FSEL, ResVT, Cmp, FV, TV);
- case ISD::SETULE:
+ Cmp = DAG.getNode(ISD::FP_EXTEND, dl, MVT::f64, Cmp);
+ return DAG.getNode(PPCISD::FSEL, dl, ResVT, Cmp, FV, TV);
case ISD::SETOLE:
case ISD::SETLE:
- Cmp = DAG.getNode(ISD::FSUB, CmpVT, RHS, LHS);
+ Cmp = DAG.getNode(ISD::FSUB, dl, CmpVT, RHS, LHS);
if (Cmp.getValueType() == MVT::f32) // Comparison is always 64-bits
- Cmp = DAG.getNode(ISD::FP_EXTEND, MVT::f64, Cmp);
- return DAG.getNode(PPCISD::FSEL, ResVT, Cmp, TV, FV);
+ Cmp = DAG.getNode(ISD::FP_EXTEND, dl, MVT::f64, Cmp);
+ return DAG.getNode(PPCISD::FSEL, dl, ResVT, Cmp, TV, FV);
}
- return SDValue();
+ return Op;
}
// FIXME: Split this code up when LegalizeDAGTypes lands.
-SDValue PPCTargetLowering::LowerFP_TO_SINT(SDValue Op, SelectionDAG &DAG) {
+SDValue PPCTargetLowering::LowerFP_TO_INT(SDValue Op, SelectionDAG &DAG,
+ DebugLoc dl) {
assert(Op.getOperand(0).getValueType().isFloatingPoint());
SDValue Src = Op.getOperand(0);
if (Src.getValueType() == MVT::f32)
- Src = DAG.getNode(ISD::FP_EXTEND, MVT::f64, Src);
+ Src = DAG.getNode(ISD::FP_EXTEND, dl, MVT::f64, Src);
SDValue Tmp;
switch (Op.getValueType().getSimpleVT()) {
- default: assert(0 && "Unhandled FP_TO_SINT type in custom expander!");
+ default: LLVM_UNREACHABLE("Unhandled FP_TO_INT type in custom expander!");
case MVT::i32:
- Tmp = DAG.getNode(PPCISD::FCTIWZ, MVT::f64, Src);
+ Tmp = DAG.getNode(Op.getOpcode()==ISD::FP_TO_SINT ? PPCISD::FCTIWZ :
+ PPCISD::FCTIDZ,
+ dl, MVT::f64, Src);
break;
case MVT::i64:
- Tmp = DAG.getNode(PPCISD::FCTIDZ, MVT::f64, Src);
+ Tmp = DAG.getNode(PPCISD::FCTIDZ, dl, MVT::f64, Src);
break;
}
SDValue FIPtr = DAG.CreateStackTemporary(MVT::f64);
// Emit a store to the stack slot.
- SDValue Chain = DAG.getStore(DAG.getEntryNode(), Tmp, FIPtr, NULL, 0);
+ SDValue Chain = DAG.getStore(DAG.getEntryNode(), dl, Tmp, FIPtr, NULL, 0);
// Result is a load from the stack slot. If loading 4 bytes, make sure to
// add in a bias.
if (Op.getValueType() == MVT::i32)
- FIPtr = DAG.getNode(ISD::ADD, FIPtr.getValueType(), FIPtr,
+ FIPtr = DAG.getNode(ISD::ADD, dl, FIPtr.getValueType(), FIPtr,
DAG.getConstant(4, FIPtr.getValueType()));
- return DAG.getLoad(Op.getValueType(), Chain, FIPtr, NULL, 0);
-}
-
-SDValue PPCTargetLowering::LowerFP_ROUND_INREG(SDValue Op,
- SelectionDAG &DAG) {
- assert(Op.getValueType() == MVT::ppcf128);
- SDNode *Node = Op.Val;
- assert(Node->getOperand(0).getValueType() == MVT::ppcf128);
- assert(Node->getOperand(0).Val->getOpcode() == ISD::BUILD_PAIR);
- SDValue Lo = Node->getOperand(0).Val->getOperand(0);
- SDValue Hi = Node->getOperand(0).Val->getOperand(1);
-
- // This sequence changes FPSCR to do round-to-zero, adds the two halves
- // of the long double, and puts FPSCR back the way it was. We do not
- // actually model FPSCR.
- std::vector<MVT> NodeTys;
- SDValue Ops[4], Result, MFFSreg, InFlag, FPreg;
-
- NodeTys.push_back(MVT::f64); // Return register
- NodeTys.push_back(MVT::Flag); // Returns a flag for later insns
- Result = DAG.getNode(PPCISD::MFFS, NodeTys, &InFlag, 0);
- MFFSreg = Result.getValue(0);
- InFlag = Result.getValue(1);
-
- NodeTys.clear();
- NodeTys.push_back(MVT::Flag); // Returns a flag
- Ops[0] = DAG.getConstant(31, MVT::i32);
- Ops[1] = InFlag;
- Result = DAG.getNode(PPCISD::MTFSB1, NodeTys, Ops, 2);
- InFlag = Result.getValue(0);
-
- NodeTys.clear();
- NodeTys.push_back(MVT::Flag); // Returns a flag
- Ops[0] = DAG.getConstant(30, MVT::i32);
- Ops[1] = InFlag;
- Result = DAG.getNode(PPCISD::MTFSB0, NodeTys, Ops, 2);
- InFlag = Result.getValue(0);
-
- NodeTys.clear();
- NodeTys.push_back(MVT::f64); // result of add
- NodeTys.push_back(MVT::Flag); // Returns a flag
- Ops[0] = Lo;
- Ops[1] = Hi;
- Ops[2] = InFlag;
- Result = DAG.getNode(PPCISD::FADDRTZ, NodeTys, Ops, 3);
- FPreg = Result.getValue(0);
- InFlag = Result.getValue(1);
-
- NodeTys.clear();
- NodeTys.push_back(MVT::f64);
- Ops[0] = DAG.getConstant(1, MVT::i32);
- Ops[1] = MFFSreg;
- Ops[2] = FPreg;
- Ops[3] = InFlag;
- Result = DAG.getNode(PPCISD::MTFSF, NodeTys, Ops, 4);
- FPreg = Result.getValue(0);
-
- // We know the low half is about to be thrown away, so just use something
- // convenient.
- return DAG.getNode(ISD::BUILD_PAIR, Lo.getValueType(), FPreg, FPreg);
+ return DAG.getLoad(Op.getValueType(), dl, Chain, FIPtr, NULL, 0);
}
SDValue PPCTargetLowering::LowerSINT_TO_FP(SDValue Op, SelectionDAG &DAG) {
+ DebugLoc dl = Op.getDebugLoc();
// Don't handle ppc_fp128 here; let it be lowered to a libcall.
if (Op.getValueType() != MVT::f32 && Op.getValueType() != MVT::f64)
return SDValue();
if (Op.getOperand(0).getValueType() == MVT::i64) {
- SDValue Bits = DAG.getNode(ISD::BIT_CONVERT, MVT::f64, Op.getOperand(0));
- SDValue FP = DAG.getNode(PPCISD::FCFID, MVT::f64, Bits);
+ SDValue Bits = DAG.getNode(ISD::BIT_CONVERT, dl,
+ MVT::f64, Op.getOperand(0));
+ SDValue FP = DAG.getNode(PPCISD::FCFID, dl, MVT::f64, Bits);
if (Op.getValueType() == MVT::f32)
- FP = DAG.getNode(ISD::FP_ROUND, MVT::f32, FP, DAG.getIntPtrConstant(0));
+ FP = DAG.getNode(ISD::FP_ROUND, dl,
+ MVT::f32, FP, DAG.getIntPtrConstant(0));
return FP;
}
-
+
assert(Op.getOperand(0).getValueType() == MVT::i32 &&
"Unhandled SINT_TO_FP type in custom expander!");
// Since we only generate this in 64-bit mode, we can take advantage of
int FrameIdx = FrameInfo->CreateStackObject(8, 8);
MVT PtrVT = DAG.getTargetLoweringInfo().getPointerTy();
SDValue FIdx = DAG.getFrameIndex(FrameIdx, PtrVT);
-
- SDValue Ext64 = DAG.getNode(PPCISD::EXTSW_32, MVT::i32,
+
+ SDValue Ext64 = DAG.getNode(PPCISD::EXTSW_32, dl, MVT::i32,
Op.getOperand(0));
-
+
// STD the extended value into the stack slot.
MachineMemOperand MO(PseudoSourceValue::getFixedStack(FrameIdx),
MachineMemOperand::MOStore, 0, 8, 8);
- SDValue Store = DAG.getNode(PPCISD::STD_32, MVT::Other,
+ SDValue Store = DAG.getNode(PPCISD::STD_32, dl, MVT::Other,
DAG.getEntryNode(), Ext64, FIdx,
DAG.getMemOperand(MO));
// Load the value as a double.
- SDValue Ld = DAG.getLoad(MVT::f64, Store, FIdx, NULL, 0);
-
+ SDValue Ld = DAG.getLoad(MVT::f64, dl, Store, FIdx, NULL, 0);
+
// FCFID it and return it.
- SDValue FP = DAG.getNode(PPCISD::FCFID, MVT::f64, Ld);
+ SDValue FP = DAG.getNode(PPCISD::FCFID, dl, MVT::f64, Ld);
if (Op.getValueType() == MVT::f32)
- FP = DAG.getNode(ISD::FP_ROUND, MVT::f32, FP, DAG.getIntPtrConstant(0));
+ FP = DAG.getNode(ISD::FP_ROUND, dl, MVT::f32, FP, DAG.getIntPtrConstant(0));
return FP;
}
SDValue PPCTargetLowering::LowerFLT_ROUNDS_(SDValue Op, SelectionDAG &DAG) {
+ DebugLoc dl = Op.getDebugLoc();
/*
The rounding mode is in bits 30:31 of FPSR, and has the following
settings:
// Save FP Control Word to register
NodeTys.push_back(MVT::f64); // return register
NodeTys.push_back(MVT::Flag); // unused in this context
- SDValue Chain = DAG.getNode(PPCISD::MFFS, NodeTys, &InFlag, 0);
+ SDValue Chain = DAG.getNode(PPCISD::MFFS, dl, NodeTys, &InFlag, 0);
// Save FP register to stack slot
int SSFI = MF.getFrameInfo()->CreateStackObject(8, 8);
SDValue StackSlot = DAG.getFrameIndex(SSFI, PtrVT);
- SDValue Store = DAG.getStore(DAG.getEntryNode(), Chain,
+ SDValue Store = DAG.getStore(DAG.getEntryNode(), dl, Chain,
StackSlot, NULL, 0);
// Load FP Control Word from low 32 bits of stack slot.
SDValue Four = DAG.getConstant(4, PtrVT);
- SDValue Addr = DAG.getNode(ISD::ADD, PtrVT, StackSlot, Four);
- SDValue CWD = DAG.getLoad(MVT::i32, Store, Addr, NULL, 0);
+ SDValue Addr = DAG.getNode(ISD::ADD, dl, PtrVT, StackSlot, Four);
+ SDValue CWD = DAG.getLoad(MVT::i32, dl, Store, Addr, NULL, 0);
// Transform as necessary
SDValue CWD1 =
- DAG.getNode(ISD::AND, MVT::i32,
+ DAG.getNode(ISD::AND, dl, MVT::i32,
CWD, DAG.getConstant(3, MVT::i32));
SDValue CWD2 =
- DAG.getNode(ISD::SRL, MVT::i32,
- DAG.getNode(ISD::AND, MVT::i32,
- DAG.getNode(ISD::XOR, MVT::i32,
+ DAG.getNode(ISD::SRL, dl, MVT::i32,
+ DAG.getNode(ISD::AND, dl, MVT::i32,
+ DAG.getNode(ISD::XOR, dl, MVT::i32,
CWD, DAG.getConstant(3, MVT::i32)),
DAG.getConstant(3, MVT::i32)),
- DAG.getConstant(1, MVT::i8));
+ DAG.getConstant(1, MVT::i32));
SDValue RetVal =
- DAG.getNode(ISD::XOR, MVT::i32, CWD1, CWD2);
+ DAG.getNode(ISD::XOR, dl, MVT::i32, CWD1, CWD2);
return DAG.getNode((VT.getSizeInBits() < 16 ?
- ISD::TRUNCATE : ISD::ZERO_EXTEND), VT, RetVal);
+ ISD::TRUNCATE : ISD::ZERO_EXTEND), dl, VT, RetVal);
}
SDValue PPCTargetLowering::LowerSHL_PARTS(SDValue Op, SelectionDAG &DAG) {
MVT VT = Op.getValueType();
unsigned BitWidth = VT.getSizeInBits();
+ DebugLoc dl = Op.getDebugLoc();
assert(Op.getNumOperands() == 3 &&
VT == Op.getOperand(1).getValueType() &&
"Unexpected SHL!");
-
+
// Expand into a bunch of logical ops. Note that these ops
// depend on the PPC behavior for oversized shift amounts.
SDValue Lo = Op.getOperand(0);
SDValue Hi = Op.getOperand(1);
SDValue Amt = Op.getOperand(2);
MVT AmtVT = Amt.getValueType();
-
- SDValue Tmp1 = DAG.getNode(ISD::SUB, AmtVT,
- DAG.getConstant(BitWidth, AmtVT), Amt);
- SDValue Tmp2 = DAG.getNode(PPCISD::SHL, VT, Hi, Amt);
- SDValue Tmp3 = DAG.getNode(PPCISD::SRL, VT, Lo, Tmp1);
- SDValue Tmp4 = DAG.getNode(ISD::OR , VT, Tmp2, Tmp3);
- SDValue Tmp5 = DAG.getNode(ISD::ADD, AmtVT, Amt,
- DAG.getConstant(-BitWidth, AmtVT));
- SDValue Tmp6 = DAG.getNode(PPCISD::SHL, VT, Lo, Tmp5);
- SDValue OutHi = DAG.getNode(ISD::OR, VT, Tmp4, Tmp6);
- SDValue OutLo = DAG.getNode(PPCISD::SHL, VT, Lo, Amt);
+
+ SDValue Tmp1 = DAG.getNode(ISD::SUB, dl, AmtVT,
+ DAG.getConstant(BitWidth, AmtVT), Amt);
+ SDValue Tmp2 = DAG.getNode(PPCISD::SHL, dl, VT, Hi, Amt);
+ SDValue Tmp3 = DAG.getNode(PPCISD::SRL, dl, VT, Lo, Tmp1);
+ SDValue Tmp4 = DAG.getNode(ISD::OR , dl, VT, Tmp2, Tmp3);
+ SDValue Tmp5 = DAG.getNode(ISD::ADD, dl, AmtVT, Amt,
+ DAG.getConstant(-BitWidth, AmtVT));
+ SDValue Tmp6 = DAG.getNode(PPCISD::SHL, dl, VT, Lo, Tmp5);
+ SDValue OutHi = DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp6);
+ SDValue OutLo = DAG.getNode(PPCISD::SHL, dl, VT, Lo, Amt);
SDValue OutOps[] = { OutLo, OutHi };
- return DAG.getMergeValues(OutOps, 2);
+ return DAG.getMergeValues(OutOps, 2, dl);
}
SDValue PPCTargetLowering::LowerSRL_PARTS(SDValue Op, SelectionDAG &DAG) {
MVT VT = Op.getValueType();
+ DebugLoc dl = Op.getDebugLoc();
unsigned BitWidth = VT.getSizeInBits();
assert(Op.getNumOperands() == 3 &&
VT == Op.getOperand(1).getValueType() &&
"Unexpected SRL!");
-
+
// Expand into a bunch of logical ops. Note that these ops
// depend on the PPC behavior for oversized shift amounts.
SDValue Lo = Op.getOperand(0);
SDValue Hi = Op.getOperand(1);
SDValue Amt = Op.getOperand(2);
MVT AmtVT = Amt.getValueType();
-
- SDValue Tmp1 = DAG.getNode(ISD::SUB, AmtVT,
- DAG.getConstant(BitWidth, AmtVT), Amt);
- SDValue Tmp2 = DAG.getNode(PPCISD::SRL, VT, Lo, Amt);
- SDValue Tmp3 = DAG.getNode(PPCISD::SHL, VT, Hi, Tmp1);
- SDValue Tmp4 = DAG.getNode(ISD::OR , VT, Tmp2, Tmp3);
- SDValue Tmp5 = DAG.getNode(ISD::ADD, AmtVT, Amt,
- DAG.getConstant(-BitWidth, AmtVT));
- SDValue Tmp6 = DAG.getNode(PPCISD::SRL, VT, Hi, Tmp5);
- SDValue OutLo = DAG.getNode(ISD::OR, VT, Tmp4, Tmp6);
- SDValue OutHi = DAG.getNode(PPCISD::SRL, VT, Hi, Amt);
+
+ SDValue Tmp1 = DAG.getNode(ISD::SUB, dl, AmtVT,
+ DAG.getConstant(BitWidth, AmtVT), Amt);
+ SDValue Tmp2 = DAG.getNode(PPCISD::SRL, dl, VT, Lo, Amt);
+ SDValue Tmp3 = DAG.getNode(PPCISD::SHL, dl, VT, Hi, Tmp1);
+ SDValue Tmp4 = DAG.getNode(ISD::OR, dl, VT, Tmp2, Tmp3);
+ SDValue Tmp5 = DAG.getNode(ISD::ADD, dl, AmtVT, Amt,
+ DAG.getConstant(-BitWidth, AmtVT));
+ SDValue Tmp6 = DAG.getNode(PPCISD::SRL, dl, VT, Hi, Tmp5);
+ SDValue OutLo = DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp6);
+ SDValue OutHi = DAG.getNode(PPCISD::SRL, dl, VT, Hi, Amt);
SDValue OutOps[] = { OutLo, OutHi };
- return DAG.getMergeValues(OutOps, 2);
+ return DAG.getMergeValues(OutOps, 2, dl);
}
SDValue PPCTargetLowering::LowerSRA_PARTS(SDValue Op, SelectionDAG &DAG) {
+ DebugLoc dl = Op.getDebugLoc();
MVT VT = Op.getValueType();
unsigned BitWidth = VT.getSizeInBits();
assert(Op.getNumOperands() == 3 &&
VT == Op.getOperand(1).getValueType() &&
"Unexpected SRA!");
-
+
// Expand into a bunch of logical ops, followed by a select_cc.
SDValue Lo = Op.getOperand(0);
SDValue Hi = Op.getOperand(1);
SDValue Amt = Op.getOperand(2);
MVT AmtVT = Amt.getValueType();
-
- SDValue Tmp1 = DAG.getNode(ISD::SUB, AmtVT,
- DAG.getConstant(BitWidth, AmtVT), Amt);
- SDValue Tmp2 = DAG.getNode(PPCISD::SRL, VT, Lo, Amt);
- SDValue Tmp3 = DAG.getNode(PPCISD::SHL, VT, Hi, Tmp1);
- SDValue Tmp4 = DAG.getNode(ISD::OR , VT, Tmp2, Tmp3);
- SDValue Tmp5 = DAG.getNode(ISD::ADD, AmtVT, Amt,
- DAG.getConstant(-BitWidth, AmtVT));
- SDValue Tmp6 = DAG.getNode(PPCISD::SRA, VT, Hi, Tmp5);
- SDValue OutHi = DAG.getNode(PPCISD::SRA, VT, Hi, Amt);
- SDValue OutLo = DAG.getSelectCC(Tmp5, DAG.getConstant(0, AmtVT),
- Tmp4, Tmp6, ISD::SETLE);
+
+ SDValue Tmp1 = DAG.getNode(ISD::SUB, dl, AmtVT,
+ DAG.getConstant(BitWidth, AmtVT), Amt);
+ SDValue Tmp2 = DAG.getNode(PPCISD::SRL, dl, VT, Lo, Amt);
+ SDValue Tmp3 = DAG.getNode(PPCISD::SHL, dl, VT, Hi, Tmp1);
+ SDValue Tmp4 = DAG.getNode(ISD::OR, dl, VT, Tmp2, Tmp3);
+ SDValue Tmp5 = DAG.getNode(ISD::ADD, dl, AmtVT, Amt,
+ DAG.getConstant(-BitWidth, AmtVT));
+ SDValue Tmp6 = DAG.getNode(PPCISD::SRA, dl, VT, Hi, Tmp5);
+ SDValue OutHi = DAG.getNode(PPCISD::SRA, dl, VT, Hi, Amt);
+ SDValue OutLo = DAG.getSelectCC(dl, Tmp5, DAG.getConstant(0, AmtVT),
+ Tmp4, Tmp6, ISD::SETLE);
SDValue OutOps[] = { OutLo, OutHi };
- return DAG.getMergeValues(OutOps, 2);
+ return DAG.getMergeValues(OutOps, 2, dl);
}
//===----------------------------------------------------------------------===//
// Vector related lowering.
//
-// If this is a vector of constants or undefs, get the bits. A bit in
-// UndefBits is set if the corresponding element of the vector is an
-// ISD::UNDEF value. For undefs, the corresponding VectorBits values are
-// zero. Return true if this is not an array of constants, false if it is.
-//
-static bool GetConstantBuildVectorBits(SDNode *BV, uint64_t VectorBits[2],
- uint64_t UndefBits[2]) {
- // Start with zero'd results.
- VectorBits[0] = VectorBits[1] = UndefBits[0] = UndefBits[1] = 0;
-
- unsigned EltBitSize = BV->getOperand(0).getValueType().getSizeInBits();
- for (unsigned i = 0, e = BV->getNumOperands(); i != e; ++i) {
- SDValue OpVal = BV->getOperand(i);
-
- unsigned PartNo = i >= e/2; // In the upper 128 bits?
- unsigned SlotNo = e/2 - (i & (e/2-1))-1; // Which subpiece of the uint64_t.
-
- uint64_t EltBits = 0;
- if (OpVal.getOpcode() == ISD::UNDEF) {
- uint64_t EltUndefBits = ~0U >> (32-EltBitSize);
- UndefBits[PartNo] |= EltUndefBits << (SlotNo*EltBitSize);
- continue;
- } else if (ConstantSDNode *CN = dyn_cast<ConstantSDNode>(OpVal)) {
- EltBits = CN->getValue() & (~0U >> (32-EltBitSize));
- } else if (ConstantFPSDNode *CN = dyn_cast<ConstantFPSDNode>(OpVal)) {
- assert(CN->getValueType(0) == MVT::f32 &&
- "Only one legal FP vector type!");
- EltBits = FloatToBits(CN->getValueAPF().convertToFloat());
- } else {
- // Nonconstant element.
- return true;
- }
-
- VectorBits[PartNo] |= EltBits << (SlotNo*EltBitSize);
- }
-
- //printf("%llx %llx %llx %llx\n",
- // VectorBits[0], VectorBits[1], UndefBits[0], UndefBits[1]);
- return false;
-}
-
-// If this is a splat (repetition) of a value across the whole vector, return
-// the smallest size that splats it. For example, "0x01010101010101..." is a
-// splat of 0x01, 0x0101, and 0x01010101. We return SplatBits = 0x01 and
-// SplatSize = 1 byte.
-static bool isConstantSplat(const uint64_t Bits128[2],
- const uint64_t Undef128[2],
- unsigned &SplatBits, unsigned &SplatUndef,
- unsigned &SplatSize) {
-
- // Don't let undefs prevent splats from matching. See if the top 64-bits are
- // the same as the lower 64-bits, ignoring undefs.
- if ((Bits128[0] & ~Undef128[1]) != (Bits128[1] & ~Undef128[0]))
- return false; // Can't be a splat if two pieces don't match.
-
- uint64_t Bits64 = Bits128[0] | Bits128[1];
- uint64_t Undef64 = Undef128[0] & Undef128[1];
-
- // Check that the top 32-bits are the same as the lower 32-bits, ignoring
- // undefs.
- if ((Bits64 & (~Undef64 >> 32)) != ((Bits64 >> 32) & ~Undef64))
- return false; // Can't be a splat if two pieces don't match.
-
- uint32_t Bits32 = uint32_t(Bits64) | uint32_t(Bits64 >> 32);
- uint32_t Undef32 = uint32_t(Undef64) & uint32_t(Undef64 >> 32);
-
- // If the top 16-bits are different than the lower 16-bits, ignoring
- // undefs, we have an i32 splat.
- if ((Bits32 & (~Undef32 >> 16)) != ((Bits32 >> 16) & ~Undef32)) {
- SplatBits = Bits32;
- SplatUndef = Undef32;
- SplatSize = 4;
- return true;
- }
-
- uint16_t Bits16 = uint16_t(Bits32) | uint16_t(Bits32 >> 16);
- uint16_t Undef16 = uint16_t(Undef32) & uint16_t(Undef32 >> 16);
-
- // If the top 8-bits are different than the lower 8-bits, ignoring
- // undefs, we have an i16 splat.
- if ((Bits16 & (uint16_t(~Undef16) >> 8)) != ((Bits16 >> 8) & ~Undef16)) {
- SplatBits = Bits16;
- SplatUndef = Undef16;
- SplatSize = 2;
- return true;
- }
-
- // Otherwise, we have an 8-bit splat.
- SplatBits = uint8_t(Bits16) | uint8_t(Bits16 >> 8);
- SplatUndef = uint8_t(Undef16) & uint8_t(Undef16 >> 8);
- SplatSize = 1;
- return true;
-}
-
/// BuildSplatI - Build a canonical splati of Val with an element size of
/// SplatSize. Cast the result to VT.
static SDValue BuildSplatI(int Val, unsigned SplatSize, MVT VT,
- SelectionDAG &DAG) {
+ SelectionDAG &DAG, DebugLoc dl) {
assert(Val >= -16 && Val <= 15 && "vsplti is out of range!");
static const MVT VTys[] = { // canonical VT to use for each size.
};
MVT ReqVT = VT != MVT::Other ? VT : VTys[SplatSize-1];
-
+
// Force vspltis[hw] -1 to vspltisb -1 to canonicalize.
if (Val == -1)
SplatSize = 1;
-
+
MVT CanonicalVT = VTys[SplatSize-1];
-
+
// Build a canonical splat for this value.
- SDValue Elt = DAG.getConstant(Val, CanonicalVT.getVectorElementType());
+ SDValue Elt = DAG.getConstant(Val, MVT::i32);
SmallVector<SDValue, 8> Ops;
Ops.assign(CanonicalVT.getVectorNumElements(), Elt);
- SDValue Res = DAG.getNode(ISD::BUILD_VECTOR, CanonicalVT,
+ SDValue Res = DAG.getNode(ISD::BUILD_VECTOR, dl, CanonicalVT,
&Ops[0], Ops.size());
- return DAG.getNode(ISD::BIT_CONVERT, ReqVT, Res);
+ return DAG.getNode(ISD::BIT_CONVERT, dl, ReqVT, Res);
}
/// BuildIntrinsicOp - Return a binary operator intrinsic node with the
/// specified intrinsic ID.
static SDValue BuildIntrinsicOp(unsigned IID, SDValue LHS, SDValue RHS,
- SelectionDAG &DAG,
- MVT DestVT = MVT::Other) {
+ SelectionDAG &DAG, DebugLoc dl,
+ MVT DestVT = MVT::Other) {
if (DestVT == MVT::Other) DestVT = LHS.getValueType();
- return DAG.getNode(ISD::INTRINSIC_WO_CHAIN, DestVT,
+ return DAG.getNode(ISD::INTRINSIC_WO_CHAIN, dl, DestVT,
DAG.getConstant(IID, MVT::i32), LHS, RHS);
}
/// BuildIntrinsicOp - Return a ternary operator intrinsic node with the
/// specified intrinsic ID.
static SDValue BuildIntrinsicOp(unsigned IID, SDValue Op0, SDValue Op1,
- SDValue Op2, SelectionDAG &DAG,
- MVT DestVT = MVT::Other) {
+ SDValue Op2, SelectionDAG &DAG,
+ DebugLoc dl, MVT DestVT = MVT::Other) {
if (DestVT == MVT::Other) DestVT = Op0.getValueType();
- return DAG.getNode(ISD::INTRINSIC_WO_CHAIN, DestVT,
+ return DAG.getNode(ISD::INTRINSIC_WO_CHAIN, dl, DestVT,
DAG.getConstant(IID, MVT::i32), Op0, Op1, Op2);
}
/// BuildVSLDOI - Return a VECTOR_SHUFFLE that is a vsldoi of the specified
/// amount. The result has the specified value type.
static SDValue BuildVSLDOI(SDValue LHS, SDValue RHS, unsigned Amt,
- MVT VT, SelectionDAG &DAG) {
+ MVT VT, SelectionDAG &DAG, DebugLoc dl) {
// Force LHS/RHS to be the right type.
- LHS = DAG.getNode(ISD::BIT_CONVERT, MVT::v16i8, LHS);
- RHS = DAG.getNode(ISD::BIT_CONVERT, MVT::v16i8, RHS);
+ LHS = DAG.getNode(ISD::BIT_CONVERT, dl, MVT::v16i8, LHS);
+ RHS = DAG.getNode(ISD::BIT_CONVERT, dl, MVT::v16i8, RHS);
+
+ int Ops[16];
+ for (unsigned i = 0; i != 16; ++i)
+ Ops[i] = i + Amt;
+ SDValue T = DAG.getVectorShuffle(MVT::v16i8, dl, LHS, RHS, Ops);
+ return DAG.getNode(ISD::BIT_CONVERT, dl, VT, T);
+}
+
+// If this is a case we can't handle, return null and let the default
+// expansion code take care of it. If we CAN select this case, and if it
+// selects to a single instruction, return Op. Otherwise, if we can codegen
+// this case more efficiently than a constant pool load, lower it to the
+// sequence of ops that should be used.
+SDValue PPCTargetLowering::LowerBUILD_VECTOR(SDValue Op, SelectionDAG &DAG) {
+ DebugLoc dl = Op.getDebugLoc();
+ BuildVectorSDNode *BVN = dyn_cast<BuildVectorSDNode>(Op.getNode());
+ assert(BVN != 0 && "Expected a BuildVectorSDNode in LowerBUILD_VECTOR");
+
+ // Check if this is a splat of a constant value.
+ APInt APSplatBits, APSplatUndef;
+ unsigned SplatBitSize;
+ bool HasAnyUndefs;
+ if (! BVN->isConstantSplat(APSplatBits, APSplatUndef, SplatBitSize,
+ HasAnyUndefs) || SplatBitSize > 32)
+ return SDValue();
+
+ unsigned SplatBits = APSplatBits.getZExtValue();
+ unsigned SplatUndef = APSplatUndef.getZExtValue();
+ unsigned SplatSize = SplatBitSize / 8;
+
+ // First, handle single instruction cases.
+
+ // All zeros?
+ if (SplatBits == 0) {
+ // Canonicalize all zero vectors to be v4i32.
+ if (Op.getValueType() != MVT::v4i32 || HasAnyUndefs) {
+ SDValue Z = DAG.getConstant(0, MVT::i32);
+ Z = DAG.getNode(ISD::BUILD_VECTOR, dl, MVT::v4i32, Z, Z, Z, Z);
+ Op = DAG.getNode(ISD::BIT_CONVERT, dl, Op.getValueType(), Z);
+ }
+ return Op;
+ }
+
+ // If the sign extended value is in the range [-16,15], use VSPLTI[bhw].
+ int32_t SextVal= (int32_t(SplatBits << (32-SplatBitSize)) >>
+ (32-SplatBitSize));
+ if (SextVal >= -16 && SextVal <= 15)
+ return BuildSplatI(SextVal, SplatSize, Op.getValueType(), DAG, dl);
+
+
+ // Two instruction sequences.
+
+ // If this value is in the range [-32,30] and is even, use:
+ // tmp = VSPLTI[bhw], result = add tmp, tmp
+ if (SextVal >= -32 && SextVal <= 30 && (SextVal & 1) == 0) {
+ SDValue Res = BuildSplatI(SextVal >> 1, SplatSize, MVT::Other, DAG, dl);
+ Res = DAG.getNode(ISD::ADD, dl, Res.getValueType(), Res, Res);
+ return DAG.getNode(ISD::BIT_CONVERT, dl, Op.getValueType(), Res);
+ }
+
+ // If this is 0x8000_0000 x 4, turn into vspltisw + vslw. If it is
+ // 0x7FFF_FFFF x 4, turn it into not(0x8000_0000). This is important
+ // for fneg/fabs.
+ if (SplatSize == 4 && SplatBits == (0x7FFFFFFF&~SplatUndef)) {
+ // Make -1 and vspltisw -1:
+ SDValue OnesV = BuildSplatI(-1, 4, MVT::v4i32, DAG, dl);
+
+ // Make the VSLW intrinsic, computing 0x8000_0000.
+ SDValue Res = BuildIntrinsicOp(Intrinsic::ppc_altivec_vslw, OnesV,
+ OnesV, DAG, dl);
+
+ // xor by OnesV to invert it.
+ Res = DAG.getNode(ISD::XOR, dl, MVT::v4i32, Res, OnesV);
+ return DAG.getNode(ISD::BIT_CONVERT, dl, Op.getValueType(), Res);
+ }
- SDValue Ops[16];
- for (unsigned i = 0; i != 16; ++i)
- Ops[i] = DAG.getConstant(i+Amt, MVT::i8);
- SDValue T = DAG.getNode(ISD::VECTOR_SHUFFLE, MVT::v16i8, LHS, RHS,
- DAG.getNode(ISD::BUILD_VECTOR, MVT::v16i8, Ops,16));
- return DAG.getNode(ISD::BIT_CONVERT, VT, T);
-}
+ // Check to see if this is a wide variety of vsplti*, binop self cases.
+ static const signed char SplatCsts[] = {
+ -1, 1, -2, 2, -3, 3, -4, 4, -5, 5, -6, 6, -7, 7,
+ -8, 8, -9, 9, -10, 10, -11, 11, -12, 12, -13, 13, 14, -14, 15, -15, -16
+ };
-// If this is a case we can't handle, return null and let the default
-// expansion code take care of it. If we CAN select this case, and if it
-// selects to a single instruction, return Op. Otherwise, if we can codegen
-// this case more efficiently than a constant pool load, lower it to the
-// sequence of ops that should be used.
-SDValue PPCTargetLowering::LowerBUILD_VECTOR(SDValue Op,
- SelectionDAG &DAG) {
- // If this is a vector of constants or undefs, get the bits. A bit in
- // UndefBits is set if the corresponding element of the vector is an
- // ISD::UNDEF value. For undefs, the corresponding VectorBits values are
- // zero.
- uint64_t VectorBits[2];
- uint64_t UndefBits[2];
- if (GetConstantBuildVectorBits(Op.Val, VectorBits, UndefBits))
- return SDValue(); // Not a constant vector.
-
- // If this is a splat (repetition) of a value across the whole vector, return
- // the smallest size that splats it. For example, "0x01010101010101..." is a
- // splat of 0x01, 0x0101, and 0x01010101. We return SplatBits = 0x01 and
- // SplatSize = 1 byte.
- unsigned SplatBits, SplatUndef, SplatSize;
- if (isConstantSplat(VectorBits, UndefBits, SplatBits, SplatUndef, SplatSize)){
- bool HasAnyUndefs = (UndefBits[0] | UndefBits[1]) != 0;
-
- // First, handle single instruction cases.
-
- // All zeros?
- if (SplatBits == 0) {
- // Canonicalize all zero vectors to be v4i32.
- if (Op.getValueType() != MVT::v4i32 || HasAnyUndefs) {
- SDValue Z = DAG.getConstant(0, MVT::i32);
- Z = DAG.getNode(ISD::BUILD_VECTOR, MVT::v4i32, Z, Z, Z, Z);
- Op = DAG.getNode(ISD::BIT_CONVERT, Op.getValueType(), Z);
- }
- return Op;
+ for (unsigned idx = 0; idx < array_lengthof(SplatCsts); ++idx) {
+ // Indirect through the SplatCsts array so that we favor 'vsplti -1' for
+ // cases which are ambiguous (e.g. formation of 0x8000_0000). 'vsplti -1'
+ int i = SplatCsts[idx];
+
+ // Figure out what shift amount will be used by altivec if shifted by i in
+ // this splat size.
+ unsigned TypeShiftAmt = i & (SplatBitSize-1);
+
+ // vsplti + shl self.
+ if (SextVal == (i << (int)TypeShiftAmt)) {
+ SDValue Res = BuildSplatI(i, SplatSize, MVT::Other, DAG, dl);
+ static const unsigned IIDs[] = { // Intrinsic to use for each size.
+ Intrinsic::ppc_altivec_vslb, Intrinsic::ppc_altivec_vslh, 0,
+ Intrinsic::ppc_altivec_vslw
+ };
+ Res = BuildIntrinsicOp(IIDs[SplatSize-1], Res, Res, DAG, dl);
+ return DAG.getNode(ISD::BIT_CONVERT, dl, Op.getValueType(), Res);
}
- // If the sign extended value is in the range [-16,15], use VSPLTI[bhw].
- int32_t SextVal= int32_t(SplatBits << (32-8*SplatSize)) >> (32-8*SplatSize);
- if (SextVal >= -16 && SextVal <= 15)
- return BuildSplatI(SextVal, SplatSize, Op.getValueType(), DAG);
-
-
- // Two instruction sequences.
-
- // If this value is in the range [-32,30] and is even, use:
- // tmp = VSPLTI[bhw], result = add tmp, tmp
- if (SextVal >= -32 && SextVal <= 30 && (SextVal & 1) == 0) {
- SDValue Res = BuildSplatI(SextVal >> 1, SplatSize, MVT::Other, DAG);
- Res = DAG.getNode(ISD::ADD, Res.getValueType(), Res, Res);
- return DAG.getNode(ISD::BIT_CONVERT, Op.getValueType(), Res);
+ // vsplti + srl self.
+ if (SextVal == (int)((unsigned)i >> TypeShiftAmt)) {
+ SDValue Res = BuildSplatI(i, SplatSize, MVT::Other, DAG, dl);
+ static const unsigned IIDs[] = { // Intrinsic to use for each size.
+ Intrinsic::ppc_altivec_vsrb, Intrinsic::ppc_altivec_vsrh, 0,
+ Intrinsic::ppc_altivec_vsrw
+ };
+ Res = BuildIntrinsicOp(IIDs[SplatSize-1], Res, Res, DAG, dl);
+ return DAG.getNode(ISD::BIT_CONVERT, dl, Op.getValueType(), Res);
}
-
- // If this is 0x8000_0000 x 4, turn into vspltisw + vslw. If it is
- // 0x7FFF_FFFF x 4, turn it into not(0x8000_0000). This is important
- // for fneg/fabs.
- if (SplatSize == 4 && SplatBits == (0x7FFFFFFF&~SplatUndef)) {
- // Make -1 and vspltisw -1:
- SDValue OnesV = BuildSplatI(-1, 4, MVT::v4i32, DAG);
-
- // Make the VSLW intrinsic, computing 0x8000_0000.
- SDValue Res = BuildIntrinsicOp(Intrinsic::ppc_altivec_vslw, OnesV,
- OnesV, DAG);
-
- // xor by OnesV to invert it.
- Res = DAG.getNode(ISD::XOR, MVT::v4i32, Res, OnesV);
- return DAG.getNode(ISD::BIT_CONVERT, Op.getValueType(), Res);
+
+ // vsplti + sra self.
+ if (SextVal == (int)((unsigned)i >> TypeShiftAmt)) {
+ SDValue Res = BuildSplatI(i, SplatSize, MVT::Other, DAG, dl);
+ static const unsigned IIDs[] = { // Intrinsic to use for each size.
+ Intrinsic::ppc_altivec_vsrab, Intrinsic::ppc_altivec_vsrah, 0,
+ Intrinsic::ppc_altivec_vsraw
+ };
+ Res = BuildIntrinsicOp(IIDs[SplatSize-1], Res, Res, DAG, dl);
+ return DAG.getNode(ISD::BIT_CONVERT, dl, Op.getValueType(), Res);
}
- // Check to see if this is a wide variety of vsplti*, binop self cases.
- unsigned SplatBitSize = SplatSize*8;
- static const signed char SplatCsts[] = {
- -1, 1, -2, 2, -3, 3, -4, 4, -5, 5, -6, 6, -7, 7,
- -8, 8, -9, 9, -10, 10, -11, 11, -12, 12, -13, 13, 14, -14, 15, -15, -16
- };
-
- for (unsigned idx = 0; idx < array_lengthof(SplatCsts); ++idx) {
- // Indirect through the SplatCsts array so that we favor 'vsplti -1' for
- // cases which are ambiguous (e.g. formation of 0x8000_0000). 'vsplti -1'
- int i = SplatCsts[idx];
-
- // Figure out what shift amount will be used by altivec if shifted by i in
- // this splat size.
- unsigned TypeShiftAmt = i & (SplatBitSize-1);
-
- // vsplti + shl self.
- if (SextVal == (i << (int)TypeShiftAmt)) {
- SDValue Res = BuildSplatI(i, SplatSize, MVT::Other, DAG);
- static const unsigned IIDs[] = { // Intrinsic to use for each size.
- Intrinsic::ppc_altivec_vslb, Intrinsic::ppc_altivec_vslh, 0,
- Intrinsic::ppc_altivec_vslw
- };
- Res = BuildIntrinsicOp(IIDs[SplatSize-1], Res, Res, DAG);
- return DAG.getNode(ISD::BIT_CONVERT, Op.getValueType(), Res);
- }
-
- // vsplti + srl self.
- if (SextVal == (int)((unsigned)i >> TypeShiftAmt)) {
- SDValue Res = BuildSplatI(i, SplatSize, MVT::Other, DAG);
- static const unsigned IIDs[] = { // Intrinsic to use for each size.
- Intrinsic::ppc_altivec_vsrb, Intrinsic::ppc_altivec_vsrh, 0,
- Intrinsic::ppc_altivec_vsrw
- };
- Res = BuildIntrinsicOp(IIDs[SplatSize-1], Res, Res, DAG);
- return DAG.getNode(ISD::BIT_CONVERT, Op.getValueType(), Res);
- }
-
- // vsplti + sra self.
- if (SextVal == (int)((unsigned)i >> TypeShiftAmt)) {
- SDValue Res = BuildSplatI(i, SplatSize, MVT::Other, DAG);
- static const unsigned IIDs[] = { // Intrinsic to use for each size.
- Intrinsic::ppc_altivec_vsrab, Intrinsic::ppc_altivec_vsrah, 0,
- Intrinsic::ppc_altivec_vsraw
- };
- Res = BuildIntrinsicOp(IIDs[SplatSize-1], Res, Res, DAG);
- return DAG.getNode(ISD::BIT_CONVERT, Op.getValueType(), Res);
- }
-
- // vsplti + rol self.
- if (SextVal == (int)(((unsigned)i << TypeShiftAmt) |
- ((unsigned)i >> (SplatBitSize-TypeShiftAmt)))) {
- SDValue Res = BuildSplatI(i, SplatSize, MVT::Other, DAG);
- static const unsigned IIDs[] = { // Intrinsic to use for each size.
- Intrinsic::ppc_altivec_vrlb, Intrinsic::ppc_altivec_vrlh, 0,
- Intrinsic::ppc_altivec_vrlw
- };
- Res = BuildIntrinsicOp(IIDs[SplatSize-1], Res, Res, DAG);
- return DAG.getNode(ISD::BIT_CONVERT, Op.getValueType(), Res);
- }
+ // vsplti + rol self.
+ if (SextVal == (int)(((unsigned)i << TypeShiftAmt) |
+ ((unsigned)i >> (SplatBitSize-TypeShiftAmt)))) {
+ SDValue Res = BuildSplatI(i, SplatSize, MVT::Other, DAG, dl);
+ static const unsigned IIDs[] = { // Intrinsic to use for each size.
+ Intrinsic::ppc_altivec_vrlb, Intrinsic::ppc_altivec_vrlh, 0,
+ Intrinsic::ppc_altivec_vrlw
+ };
+ Res = BuildIntrinsicOp(IIDs[SplatSize-1], Res, Res, DAG, dl);
+ return DAG.getNode(ISD::BIT_CONVERT, dl, Op.getValueType(), Res);
+ }
- // t = vsplti c, result = vsldoi t, t, 1
- if (SextVal == ((i << 8) | (i >> (TypeShiftAmt-8)))) {
- SDValue T = BuildSplatI(i, SplatSize, MVT::v16i8, DAG);
- return BuildVSLDOI(T, T, 1, Op.getValueType(), DAG);
- }
- // t = vsplti c, result = vsldoi t, t, 2
- if (SextVal == ((i << 16) | (i >> (TypeShiftAmt-16)))) {
- SDValue T = BuildSplatI(i, SplatSize, MVT::v16i8, DAG);
- return BuildVSLDOI(T, T, 2, Op.getValueType(), DAG);
- }
- // t = vsplti c, result = vsldoi t, t, 3
- if (SextVal == ((i << 24) | (i >> (TypeShiftAmt-24)))) {
- SDValue T = BuildSplatI(i, SplatSize, MVT::v16i8, DAG);
- return BuildVSLDOI(T, T, 3, Op.getValueType(), DAG);
- }
+ // t = vsplti c, result = vsldoi t, t, 1
+ if (SextVal == ((i << 8) | (i >> (TypeShiftAmt-8)))) {
+ SDValue T = BuildSplatI(i, SplatSize, MVT::v16i8, DAG, dl);
+ return BuildVSLDOI(T, T, 1, Op.getValueType(), DAG, dl);
}
-
- // Three instruction sequences.
-
- // Odd, in range [17,31]: (vsplti C)-(vsplti -16).
- if (SextVal >= 0 && SextVal <= 31) {
- SDValue LHS = BuildSplatI(SextVal-16, SplatSize, MVT::Other, DAG);
- SDValue RHS = BuildSplatI(-16, SplatSize, MVT::Other, DAG);
- LHS = DAG.getNode(ISD::SUB, LHS.getValueType(), LHS, RHS);
- return DAG.getNode(ISD::BIT_CONVERT, Op.getValueType(), LHS);
+ // t = vsplti c, result = vsldoi t, t, 2
+ if (SextVal == ((i << 16) | (i >> (TypeShiftAmt-16)))) {
+ SDValue T = BuildSplatI(i, SplatSize, MVT::v16i8, DAG, dl);
+ return BuildVSLDOI(T, T, 2, Op.getValueType(), DAG, dl);
}
- // Odd, in range [-31,-17]: (vsplti C)+(vsplti -16).
- if (SextVal >= -31 && SextVal <= 0) {
- SDValue LHS = BuildSplatI(SextVal+16, SplatSize, MVT::Other, DAG);
- SDValue RHS = BuildSplatI(-16, SplatSize, MVT::Other, DAG);
- LHS = DAG.getNode(ISD::ADD, LHS.getValueType(), LHS, RHS);
- return DAG.getNode(ISD::BIT_CONVERT, Op.getValueType(), LHS);
+ // t = vsplti c, result = vsldoi t, t, 3
+ if (SextVal == ((i << 24) | (i >> (TypeShiftAmt-24)))) {
+ SDValue T = BuildSplatI(i, SplatSize, MVT::v16i8, DAG, dl);
+ return BuildVSLDOI(T, T, 3, Op.getValueType(), DAG, dl);
}
}
-
+
+ // Three instruction sequences.
+
+ // Odd, in range [17,31]: (vsplti C)-(vsplti -16).
+ if (SextVal >= 0 && SextVal <= 31) {
+ SDValue LHS = BuildSplatI(SextVal-16, SplatSize, MVT::Other, DAG, dl);
+ SDValue RHS = BuildSplatI(-16, SplatSize, MVT::Other, DAG, dl);
+ LHS = DAG.getNode(ISD::SUB, dl, LHS.getValueType(), LHS, RHS);
+ return DAG.getNode(ISD::BIT_CONVERT, dl, Op.getValueType(), LHS);
+ }
+ // Odd, in range [-31,-17]: (vsplti C)+(vsplti -16).
+ if (SextVal >= -31 && SextVal <= 0) {
+ SDValue LHS = BuildSplatI(SextVal+16, SplatSize, MVT::Other, DAG, dl);
+ SDValue RHS = BuildSplatI(-16, SplatSize, MVT::Other, DAG, dl);
+ LHS = DAG.getNode(ISD::ADD, dl, LHS.getValueType(), LHS, RHS);
+ return DAG.getNode(ISD::BIT_CONVERT, dl, Op.getValueType(), LHS);
+ }
+
return SDValue();
}
/// GeneratePerfectShuffle - Given an entry in the perfect-shuffle table, emit
/// the specified operations to build the shuffle.
static SDValue GeneratePerfectShuffle(unsigned PFEntry, SDValue LHS,
- SDValue RHS, SelectionDAG &DAG) {
+ SDValue RHS, SelectionDAG &DAG,
+ DebugLoc dl) {
unsigned OpNum = (PFEntry >> 26) & 0x0F;
- unsigned LHSID = (PFEntry >> 13) & ((1 << 13)-1);
+ unsigned LHSID = (PFEntry >> 13) & ((1 << 13)-1);
unsigned RHSID = (PFEntry >> 0) & ((1 << 13)-1);
-
+
enum {
OP_COPY = 0, // Copy, used for things like <u,u,u,3> to say it is <0,1,2,3>
OP_VMRGHW,
OP_VSLDOI8,
OP_VSLDOI12
};
-
+
if (OpNum == OP_COPY) {
if (LHSID == (1*9+2)*9+3) return LHS;
assert(LHSID == ((4*9+5)*9+6)*9+7 && "Illegal OP_COPY!");
return RHS;
}
-
+
SDValue OpLHS, OpRHS;
- OpLHS = GeneratePerfectShuffle(PerfectShuffleTable[LHSID], LHS, RHS, DAG);
- OpRHS = GeneratePerfectShuffle(PerfectShuffleTable[RHSID], LHS, RHS, DAG);
-
- unsigned ShufIdxs[16];
+ OpLHS = GeneratePerfectShuffle(PerfectShuffleTable[LHSID], LHS, RHS, DAG, dl);
+ OpRHS = GeneratePerfectShuffle(PerfectShuffleTable[RHSID], LHS, RHS, DAG, dl);
+
+ int ShufIdxs[16];
switch (OpNum) {
- default: assert(0 && "Unknown i32 permute!");
+ default: LLVM_UNREACHABLE("Unknown i32 permute!");
case OP_VMRGHW:
ShufIdxs[ 0] = 0; ShufIdxs[ 1] = 1; ShufIdxs[ 2] = 2; ShufIdxs[ 3] = 3;
ShufIdxs[ 4] = 16; ShufIdxs[ 5] = 17; ShufIdxs[ 6] = 18; ShufIdxs[ 7] = 19;
ShufIdxs[i] = (i&3)+12;
break;
case OP_VSLDOI4:
- return BuildVSLDOI(OpLHS, OpRHS, 4, OpLHS.getValueType(), DAG);
+ return BuildVSLDOI(OpLHS, OpRHS, 4, OpLHS.getValueType(), DAG, dl);
case OP_VSLDOI8:
- return BuildVSLDOI(OpLHS, OpRHS, 8, OpLHS.getValueType(), DAG);
+ return BuildVSLDOI(OpLHS, OpRHS, 8, OpLHS.getValueType(), DAG, dl);
case OP_VSLDOI12:
- return BuildVSLDOI(OpLHS, OpRHS, 12, OpLHS.getValueType(), DAG);
+ return BuildVSLDOI(OpLHS, OpRHS, 12, OpLHS.getValueType(), DAG, dl);
}
- SDValue Ops[16];
- for (unsigned i = 0; i != 16; ++i)
- Ops[i] = DAG.getConstant(ShufIdxs[i], MVT::i8);
-
- return DAG.getNode(ISD::VECTOR_SHUFFLE, OpLHS.getValueType(), OpLHS, OpRHS,
- DAG.getNode(ISD::BUILD_VECTOR, MVT::v16i8, Ops, 16));
+ MVT VT = OpLHS.getValueType();
+ OpLHS = DAG.getNode(ISD::BIT_CONVERT, dl, MVT::v16i8, OpLHS);
+ OpRHS = DAG.getNode(ISD::BIT_CONVERT, dl, MVT::v16i8, OpRHS);
+ SDValue T = DAG.getVectorShuffle(MVT::v16i8, dl, OpLHS, OpRHS, ShufIdxs);
+ return DAG.getNode(ISD::BIT_CONVERT, dl, VT, T);
}
/// LowerVECTOR_SHUFFLE - Return the code we lower for VECTOR_SHUFFLE. If this
/// is a shuffle we can handle in a single instruction, return it. Otherwise,
/// return the code it can be lowered into. Worst case, it can always be
/// lowered into a vperm.
-SDValue PPCTargetLowering::LowerVECTOR_SHUFFLE(SDValue Op,
- SelectionDAG &DAG) {
+SDValue PPCTargetLowering::LowerVECTOR_SHUFFLE(SDValue Op,
+ SelectionDAG &DAG) {
+ DebugLoc dl = Op.getDebugLoc();
SDValue V1 = Op.getOperand(0);
SDValue V2 = Op.getOperand(1);
- SDValue PermMask = Op.getOperand(2);
-
+ ShuffleVectorSDNode *SVOp = cast<ShuffleVectorSDNode>(Op);
+ MVT VT = Op.getValueType();
+
// Cases that are handled by instructions that take permute immediates
// (such as vsplt*) should be left as VECTOR_SHUFFLE nodes so they can be
// selected by the instruction selector.
if (V2.getOpcode() == ISD::UNDEF) {
- if (PPC::isSplatShuffleMask(PermMask.Val, 1) ||
- PPC::isSplatShuffleMask(PermMask.Val, 2) ||
- PPC::isSplatShuffleMask(PermMask.Val, 4) ||
- PPC::isVPKUWUMShuffleMask(PermMask.Val, true) ||
- PPC::isVPKUHUMShuffleMask(PermMask.Val, true) ||
- PPC::isVSLDOIShuffleMask(PermMask.Val, true) != -1 ||
- PPC::isVMRGLShuffleMask(PermMask.Val, 1, true) ||
- PPC::isVMRGLShuffleMask(PermMask.Val, 2, true) ||
- PPC::isVMRGLShuffleMask(PermMask.Val, 4, true) ||
- PPC::isVMRGHShuffleMask(PermMask.Val, 1, true) ||
- PPC::isVMRGHShuffleMask(PermMask.Val, 2, true) ||
- PPC::isVMRGHShuffleMask(PermMask.Val, 4, true)) {
+ if (PPC::isSplatShuffleMask(SVOp, 1) ||
+ PPC::isSplatShuffleMask(SVOp, 2) ||
+ PPC::isSplatShuffleMask(SVOp, 4) ||
+ PPC::isVPKUWUMShuffleMask(SVOp, true) ||
+ PPC::isVPKUHUMShuffleMask(SVOp, true) ||
+ PPC::isVSLDOIShuffleMask(SVOp, true) != -1 ||
+ PPC::isVMRGLShuffleMask(SVOp, 1, true) ||
+ PPC::isVMRGLShuffleMask(SVOp, 2, true) ||
+ PPC::isVMRGLShuffleMask(SVOp, 4, true) ||
+ PPC::isVMRGHShuffleMask(SVOp, 1, true) ||
+ PPC::isVMRGHShuffleMask(SVOp, 2, true) ||
+ PPC::isVMRGHShuffleMask(SVOp, 4, true)) {
return Op;
}
}
-
+
// Altivec has a variety of "shuffle immediates" that take two vector inputs
// and produce a fixed permutation. If any of these match, do not lower to
// VPERM.
- if (PPC::isVPKUWUMShuffleMask(PermMask.Val, false) ||
- PPC::isVPKUHUMShuffleMask(PermMask.Val, false) ||
- PPC::isVSLDOIShuffleMask(PermMask.Val, false) != -1 ||
- PPC::isVMRGLShuffleMask(PermMask.Val, 1, false) ||
- PPC::isVMRGLShuffleMask(PermMask.Val, 2, false) ||
- PPC::isVMRGLShuffleMask(PermMask.Val, 4, false) ||
- PPC::isVMRGHShuffleMask(PermMask.Val, 1, false) ||
- PPC::isVMRGHShuffleMask(PermMask.Val, 2, false) ||
- PPC::isVMRGHShuffleMask(PermMask.Val, 4, false))
+ if (PPC::isVPKUWUMShuffleMask(SVOp, false) ||
+ PPC::isVPKUHUMShuffleMask(SVOp, false) ||
+ PPC::isVSLDOIShuffleMask(SVOp, false) != -1 ||
+ PPC::isVMRGLShuffleMask(SVOp, 1, false) ||
+ PPC::isVMRGLShuffleMask(SVOp, 2, false) ||
+ PPC::isVMRGLShuffleMask(SVOp, 4, false) ||
+ PPC::isVMRGHShuffleMask(SVOp, 1, false) ||
+ PPC::isVMRGHShuffleMask(SVOp, 2, false) ||
+ PPC::isVMRGHShuffleMask(SVOp, 4, false))
return Op;
-
+
// Check to see if this is a shuffle of 4-byte values. If so, we can use our
// perfect shuffle table to emit an optimal matching sequence.
+ SmallVector<int, 16> PermMask;
+ SVOp->getMask(PermMask);
+
unsigned PFIndexes[4];
bool isFourElementShuffle = true;
for (unsigned i = 0; i != 4 && isFourElementShuffle; ++i) { // Element number
unsigned EltNo = 8; // Start out undef.
for (unsigned j = 0; j != 4; ++j) { // Intra-element byte.
- if (PermMask.getOperand(i*4+j).getOpcode() == ISD::UNDEF)
+ if (PermMask[i*4+j] < 0)
continue; // Undef, ignore it.
-
- unsigned ByteSource =
- cast<ConstantSDNode>(PermMask.getOperand(i*4+j))->getValue();
+
+ unsigned ByteSource = PermMask[i*4+j];
if ((ByteSource & 3) != j) {
isFourElementShuffle = false;
break;
}
-
+
if (EltNo == 8) {
EltNo = ByteSource/4;
} else if (EltNo != ByteSource/4) {
}
PFIndexes[i] = EltNo;
}
-
- // If this shuffle can be expressed as a shuffle of 4-byte elements, use the
+
+ // If this shuffle can be expressed as a shuffle of 4-byte elements, use the
// perfect shuffle vector to determine if it is cost effective to do this as
// discrete instructions, or whether we should use a vperm.
if (isFourElementShuffle) {
// Compute the index in the perfect shuffle table.
- unsigned PFTableIndex =
+ unsigned PFTableIndex =
PFIndexes[0]*9*9*9+PFIndexes[1]*9*9+PFIndexes[2]*9+PFIndexes[3];
-
+
unsigned PFEntry = PerfectShuffleTable[PFTableIndex];
unsigned Cost = (PFEntry >> 30);
-
+
// Determining when to avoid vperm is tricky. Many things affect the cost
// of vperm, particularly how many times the perm mask needs to be computed.
// For example, if the perm mask can be hoisted out of a loop or is already
// the loop requires an extra register.
//
// As a compromise, we only emit discrete instructions if the shuffle can be
- // generated in 3 or fewer operations. When we have loop information
+ // generated in 3 or fewer operations. When we have loop information
// available, if this block is within a loop, we should avoid using vperm
// for 3-operation perms and use a constant pool load instead.
- if (Cost < 3)
- return GeneratePerfectShuffle(PFEntry, V1, V2, DAG);
+ if (Cost < 3)
+ return GeneratePerfectShuffle(PFEntry, V1, V2, DAG, dl);
}
-
+
// Lower this to a VPERM(V1, V2, V3) expression, where V3 is a constant
// vector that will get spilled to the constant pool.
if (V2.getOpcode() == ISD::UNDEF) V2 = V1;
-
+
// The SHUFFLE_VECTOR mask is almost exactly what we want for vperm, except
// that it is in input element units, not in bytes. Convert now.
MVT EltVT = V1.getValueType().getVectorElementType();
unsigned BytesPerElement = EltVT.getSizeInBits()/8;
-
+
SmallVector<SDValue, 16> ResultMask;
- for (unsigned i = 0, e = PermMask.getNumOperands(); i != e; ++i) {
- unsigned SrcElt;
- if (PermMask.getOperand(i).getOpcode() == ISD::UNDEF)
- SrcElt = 0;
- else
- SrcElt = cast<ConstantSDNode>(PermMask.getOperand(i))->getValue();
-
+ for (unsigned i = 0, e = VT.getVectorNumElements(); i != e; ++i) {
+ unsigned SrcElt = PermMask[i] < 0 ? 0 : PermMask[i];
+
for (unsigned j = 0; j != BytesPerElement; ++j)
ResultMask.push_back(DAG.getConstant(SrcElt*BytesPerElement+j,
- MVT::i8));
+ MVT::i32));
}
-
- SDValue VPermMask = DAG.getNode(ISD::BUILD_VECTOR, MVT::v16i8,
+
+ SDValue VPermMask = DAG.getNode(ISD::BUILD_VECTOR, dl, MVT::v16i8,
&ResultMask[0], ResultMask.size());
- return DAG.getNode(PPCISD::VPERM, V1.getValueType(), V1, V2, VPermMask);
+ return DAG.getNode(PPCISD::VPERM, dl, V1.getValueType(), V1, V2, VPermMask);
}
/// getAltivecCompareInfo - Given an intrinsic, return false if it is not an
/// information about the intrinsic.
static bool getAltivecCompareInfo(SDValue Intrin, int &CompareOpc,
bool &isDot) {
- unsigned IntrinsicID = cast<ConstantSDNode>(Intrin.getOperand(0))->getValue();
+ unsigned IntrinsicID =
+ cast<ConstantSDNode>(Intrin.getOperand(0))->getZExtValue();
CompareOpc = -1;
isDot = false;
switch (IntrinsicID) {
case Intrinsic::ppc_altivec_vcmpgtub_p: CompareOpc = 518; isDot = 1; break;
case Intrinsic::ppc_altivec_vcmpgtuh_p: CompareOpc = 582; isDot = 1; break;
case Intrinsic::ppc_altivec_vcmpgtuw_p: CompareOpc = 646; isDot = 1; break;
-
+
// Normal Comparisons.
case Intrinsic::ppc_altivec_vcmpbfp: CompareOpc = 966; isDot = 0; break;
case Intrinsic::ppc_altivec_vcmpeqfp: CompareOpc = 198; isDot = 0; break;
/// LowerINTRINSIC_WO_CHAIN - If this is an intrinsic that we want to custom
/// lower, do it, otherwise return null.
-SDValue PPCTargetLowering::LowerINTRINSIC_WO_CHAIN(SDValue Op,
+SDValue PPCTargetLowering::LowerINTRINSIC_WO_CHAIN(SDValue Op,
SelectionDAG &DAG) {
// If this is a lowered altivec predicate compare, CompareOpc is set to the
// opcode number of the comparison.
+ DebugLoc dl = Op.getDebugLoc();
int CompareOpc;
bool isDot;
if (!getAltivecCompareInfo(Op, CompareOpc, isDot))
return SDValue(); // Don't custom lower most intrinsics.
-
+
// If this is a non-dot comparison, make the VCMP node and we are done.
if (!isDot) {
- SDValue Tmp = DAG.getNode(PPCISD::VCMP, Op.getOperand(2).getValueType(),
+ SDValue Tmp = DAG.getNode(PPCISD::VCMP, dl, Op.getOperand(2).getValueType(),
Op.getOperand(1), Op.getOperand(2),
DAG.getConstant(CompareOpc, MVT::i32));
- return DAG.getNode(ISD::BIT_CONVERT, Op.getValueType(), Tmp);
+ return DAG.getNode(ISD::BIT_CONVERT, dl, Op.getValueType(), Tmp);
}
-
+
// Create the PPCISD altivec 'dot' comparison node.
SDValue Ops[] = {
Op.getOperand(2), // LHS
std::vector<MVT> VTs;
VTs.push_back(Op.getOperand(2).getValueType());
VTs.push_back(MVT::Flag);
- SDValue CompNode = DAG.getNode(PPCISD::VCMPo, VTs, Ops, 3);
-
+ SDValue CompNode = DAG.getNode(PPCISD::VCMPo, dl, VTs, Ops, 3);
+
// Now that we have the comparison, emit a copy from the CR to a GPR.
// This is flagged to the above dot comparison.
- SDValue Flags = DAG.getNode(PPCISD::MFCR, MVT::i32,
+ SDValue Flags = DAG.getNode(PPCISD::MFCR, dl, MVT::i32,
DAG.getRegister(PPC::CR6, MVT::i32),
- CompNode.getValue(1));
-
+ CompNode.getValue(1));
+
// Unpack the result based on how the target uses it.
unsigned BitNo; // Bit # of CR6.
bool InvertBit; // Invert result?
- switch (cast<ConstantSDNode>(Op.getOperand(1))->getValue()) {
+ switch (cast<ConstantSDNode>(Op.getOperand(1))->getZExtValue()) {
default: // Can't happen, don't crash on invalid number though.
case 0: // Return the value of the EQ bit of CR6.
BitNo = 0; InvertBit = false;
BitNo = 2; InvertBit = true;
break;
}
-
+
// Shift the bit into the low position.
- Flags = DAG.getNode(ISD::SRL, MVT::i32, Flags,
+ Flags = DAG.getNode(ISD::SRL, dl, MVT::i32, Flags,
DAG.getConstant(8-(3-BitNo), MVT::i32));
// Isolate the bit.
- Flags = DAG.getNode(ISD::AND, MVT::i32, Flags,
+ Flags = DAG.getNode(ISD::AND, dl, MVT::i32, Flags,
DAG.getConstant(1, MVT::i32));
-
+
// If we are supposed to, toggle the bit.
if (InvertBit)
- Flags = DAG.getNode(ISD::XOR, MVT::i32, Flags,
+ Flags = DAG.getNode(ISD::XOR, dl, MVT::i32, Flags,
DAG.getConstant(1, MVT::i32));
return Flags;
}
-SDValue PPCTargetLowering::LowerSCALAR_TO_VECTOR(SDValue Op,
+SDValue PPCTargetLowering::LowerSCALAR_TO_VECTOR(SDValue Op,
SelectionDAG &DAG) {
+ DebugLoc dl = Op.getDebugLoc();
// Create a stack slot that is 16-byte aligned.
MachineFrameInfo *FrameInfo = DAG.getMachineFunction().getFrameInfo();
int FrameIdx = FrameInfo->CreateStackObject(16, 16);
MVT PtrVT = DAG.getTargetLoweringInfo().getPointerTy();
SDValue FIdx = DAG.getFrameIndex(FrameIdx, PtrVT);
-
+
// Store the input value into Value#0 of the stack slot.
- SDValue Store = DAG.getStore(DAG.getEntryNode(),
+ SDValue Store = DAG.getStore(DAG.getEntryNode(), dl,
Op.getOperand(0), FIdx, NULL, 0);
// Load it out.
- return DAG.getLoad(Op.getValueType(), Store, FIdx, NULL, 0);
+ return DAG.getLoad(Op.getValueType(), dl, Store, FIdx, NULL, 0);
}
SDValue PPCTargetLowering::LowerMUL(SDValue Op, SelectionDAG &DAG) {
+ DebugLoc dl = Op.getDebugLoc();
if (Op.getValueType() == MVT::v4i32) {
SDValue LHS = Op.getOperand(0), RHS = Op.getOperand(1);
-
- SDValue Zero = BuildSplatI( 0, 1, MVT::v4i32, DAG);
- SDValue Neg16 = BuildSplatI(-16, 4, MVT::v4i32, DAG); // +16 as shift amt.
-
+
+ SDValue Zero = BuildSplatI( 0, 1, MVT::v4i32, DAG, dl);
+ SDValue Neg16 = BuildSplatI(-16, 4, MVT::v4i32, DAG, dl);//+16 as shift amt.
+
SDValue RHSSwap = // = vrlw RHS, 16
- BuildIntrinsicOp(Intrinsic::ppc_altivec_vrlw, RHS, Neg16, DAG);
-
+ BuildIntrinsicOp(Intrinsic::ppc_altivec_vrlw, RHS, Neg16, DAG, dl);
+
// Shrinkify inputs to v8i16.
- LHS = DAG.getNode(ISD::BIT_CONVERT, MVT::v8i16, LHS);
- RHS = DAG.getNode(ISD::BIT_CONVERT, MVT::v8i16, RHS);
- RHSSwap = DAG.getNode(ISD::BIT_CONVERT, MVT::v8i16, RHSSwap);
-
+ LHS = DAG.getNode(ISD::BIT_CONVERT, dl, MVT::v8i16, LHS);
+ RHS = DAG.getNode(ISD::BIT_CONVERT, dl, MVT::v8i16, RHS);
+ RHSSwap = DAG.getNode(ISD::BIT_CONVERT, dl, MVT::v8i16, RHSSwap);
+
// Low parts multiplied together, generating 32-bit results (we ignore the
// top parts).
SDValue LoProd = BuildIntrinsicOp(Intrinsic::ppc_altivec_vmulouh,
- LHS, RHS, DAG, MVT::v4i32);
-
+ LHS, RHS, DAG, dl, MVT::v4i32);
+
SDValue HiProd = BuildIntrinsicOp(Intrinsic::ppc_altivec_vmsumuhm,
- LHS, RHSSwap, Zero, DAG, MVT::v4i32);
+ LHS, RHSSwap, Zero, DAG, dl, MVT::v4i32);
// Shift the high parts up 16 bits.
- HiProd = BuildIntrinsicOp(Intrinsic::ppc_altivec_vslw, HiProd, Neg16, DAG);
- return DAG.getNode(ISD::ADD, MVT::v4i32, LoProd, HiProd);
+ HiProd = BuildIntrinsicOp(Intrinsic::ppc_altivec_vslw, HiProd,
+ Neg16, DAG, dl);
+ return DAG.getNode(ISD::ADD, dl, MVT::v4i32, LoProd, HiProd);
} else if (Op.getValueType() == MVT::v8i16) {
SDValue LHS = Op.getOperand(0), RHS = Op.getOperand(1);
-
- SDValue Zero = BuildSplatI(0, 1, MVT::v8i16, DAG);
+
+ SDValue Zero = BuildSplatI(0, 1, MVT::v8i16, DAG, dl);
return BuildIntrinsicOp(Intrinsic::ppc_altivec_vmladduhm,
- LHS, RHS, Zero, DAG);
+ LHS, RHS, Zero, DAG, dl);
} else if (Op.getValueType() == MVT::v16i8) {
SDValue LHS = Op.getOperand(0), RHS = Op.getOperand(1);
-
+
// Multiply the even 8-bit parts, producing 16-bit sums.
SDValue EvenParts = BuildIntrinsicOp(Intrinsic::ppc_altivec_vmuleub,
- LHS, RHS, DAG, MVT::v8i16);
- EvenParts = DAG.getNode(ISD::BIT_CONVERT, MVT::v16i8, EvenParts);
-
+ LHS, RHS, DAG, dl, MVT::v8i16);
+ EvenParts = DAG.getNode(ISD::BIT_CONVERT, dl, MVT::v16i8, EvenParts);
+
// Multiply the odd 8-bit parts, producing 16-bit sums.
SDValue OddParts = BuildIntrinsicOp(Intrinsic::ppc_altivec_vmuloub,
- LHS, RHS, DAG, MVT::v8i16);
- OddParts = DAG.getNode(ISD::BIT_CONVERT, MVT::v16i8, OddParts);
-
+ LHS, RHS, DAG, dl, MVT::v8i16);
+ OddParts = DAG.getNode(ISD::BIT_CONVERT, dl, MVT::v16i8, OddParts);
+
// Merge the results together.
- SDValue Ops[16];
+ int Ops[16];
for (unsigned i = 0; i != 8; ++i) {
- Ops[i*2 ] = DAG.getConstant(2*i+1, MVT::i8);
- Ops[i*2+1] = DAG.getConstant(2*i+1+16, MVT::i8);
+ Ops[i*2 ] = 2*i+1;
+ Ops[i*2+1] = 2*i+1+16;
}
- return DAG.getNode(ISD::VECTOR_SHUFFLE, MVT::v16i8, EvenParts, OddParts,
- DAG.getNode(ISD::BUILD_VECTOR, MVT::v16i8, Ops, 16));
+ return DAG.getVectorShuffle(MVT::v16i8, dl, EvenParts, OddParts, Ops);
} else {
- assert(0 && "Unknown mul to lower!");
- abort();
+ LLVM_UNREACHABLE("Unknown mul to lower!");
}
}
///
SDValue PPCTargetLowering::LowerOperation(SDValue Op, SelectionDAG &DAG) {
switch (Op.getOpcode()) {
- default: assert(0 && "Wasn't expecting to be able to lower this!");
+ default: LLVM_UNREACHABLE("Wasn't expecting to be able to lower this!");
case ISD::ConstantPool: return LowerConstantPool(Op, DAG);
case ISD::GlobalAddress: return LowerGlobalAddress(Op, DAG);
case ISD::GlobalTLSAddress: return LowerGlobalTLSAddress(Op, DAG);
case ISD::JumpTable: return LowerJumpTable(Op, DAG);
case ISD::SETCC: return LowerSETCC(Op, DAG);
- case ISD::VASTART:
+ case ISD::TRAMPOLINE: return LowerTRAMPOLINE(Op, DAG);
+ case ISD::VASTART:
return LowerVASTART(Op, DAG, VarArgsFrameIndex, VarArgsStackOffset,
VarArgsNumGPR, VarArgsNumFPR, PPCSubTarget);
-
- case ISD::VAARG:
+
+ case ISD::VAARG:
return LowerVAARG(Op, DAG, VarArgsFrameIndex, VarArgsStackOffset,
VarArgsNumGPR, VarArgsNumFPR, PPCSubTarget);
case ISD::FORMAL_ARGUMENTS:
- return LowerFORMAL_ARGUMENTS(Op, DAG, VarArgsFrameIndex,
- VarArgsStackOffset, VarArgsNumGPR,
- VarArgsNumFPR, PPCSubTarget);
+ if (PPCSubTarget.isSVR4ABI()) {
+ return LowerFORMAL_ARGUMENTS_SVR4(Op, DAG, VarArgsFrameIndex,
+ VarArgsStackOffset, VarArgsNumGPR,
+ VarArgsNumFPR, PPCSubTarget);
+ } else {
+ return LowerFORMAL_ARGUMENTS_Darwin(Op, DAG, VarArgsFrameIndex,
+ PPCSubTarget);
+ }
- case ISD::CALL: return LowerCALL(Op, DAG, PPCSubTarget,
- getTargetMachine());
+ case ISD::CALL:
+ if (PPCSubTarget.isSVR4ABI()) {
+ return LowerCALL_SVR4(Op, DAG, PPCSubTarget, getTargetMachine());
+ } else {
+ return LowerCALL_Darwin(Op, DAG, PPCSubTarget, getTargetMachine());
+ }
+
case ISD::RET: return LowerRET(Op, DAG, getTargetMachine());
case ISD::STACKRESTORE: return LowerSTACKRESTORE(Op, DAG, PPCSubTarget);
case ISD::DYNAMIC_STACKALLOC:
return LowerDYNAMIC_STACKALLOC(Op, DAG, PPCSubTarget);
case ISD::SELECT_CC: return LowerSELECT_CC(Op, DAG);
- case ISD::FP_TO_SINT: return LowerFP_TO_SINT(Op, DAG);
+ case ISD::FP_TO_UINT:
+ case ISD::FP_TO_SINT: return LowerFP_TO_INT(Op, DAG,
+ Op.getDebugLoc());
case ISD::SINT_TO_FP: return LowerSINT_TO_FP(Op, DAG);
- case ISD::FP_ROUND_INREG: return LowerFP_ROUND_INREG(Op, DAG);
case ISD::FLT_ROUNDS_: return LowerFLT_ROUNDS_(Op, DAG);
// Lower 64-bit shifts.
case ISD::INTRINSIC_WO_CHAIN: return LowerINTRINSIC_WO_CHAIN(Op, DAG);
case ISD::SCALAR_TO_VECTOR: return LowerSCALAR_TO_VECTOR(Op, DAG);
case ISD::MUL: return LowerMUL(Op, DAG);
-
+
// Frame & Return address.
case ISD::RETURNADDR: return LowerRETURNADDR(Op, DAG);
case ISD::FRAMEADDR: return LowerFRAMEADDR(Op, DAG);
return SDValue();
}
-SDNode *PPCTargetLowering::ReplaceNodeResults(SDNode *N, SelectionDAG &DAG) {
+void PPCTargetLowering::ReplaceNodeResults(SDNode *N,
+ SmallVectorImpl<SDValue>&Results,
+ SelectionDAG &DAG) {
+ DebugLoc dl = N->getDebugLoc();
switch (N->getOpcode()) {
- default: assert(0 && "Wasn't expecting to be able to lower this!");
- case ISD::FP_TO_SINT: {
- SDValue Res = LowerFP_TO_SINT(SDValue(N, 0), DAG);
- // Use MERGE_VALUES to drop the chain result value and get a node with one
- // result. This requires turning off getMergeValues simplification, since
- // otherwise it will give us Res back.
- return DAG.getMergeValues(&Res, 1, false).Val;
+ default:
+ assert(false && "Do not know how to custom type legalize this operation!");
+ return;
+ case ISD::FP_ROUND_INREG: {
+ assert(N->getValueType(0) == MVT::ppcf128);
+ assert(N->getOperand(0).getValueType() == MVT::ppcf128);
+ SDValue Lo = DAG.getNode(ISD::EXTRACT_ELEMENT, dl,
+ MVT::f64, N->getOperand(0),
+ DAG.getIntPtrConstant(0));
+ SDValue Hi = DAG.getNode(ISD::EXTRACT_ELEMENT, dl,
+ MVT::f64, N->getOperand(0),
+ DAG.getIntPtrConstant(1));
+
+ // This sequence changes FPSCR to do round-to-zero, adds the two halves
+ // of the long double, and puts FPSCR back the way it was. We do not
+ // actually model FPSCR.
+ std::vector<MVT> NodeTys;
+ SDValue Ops[4], Result, MFFSreg, InFlag, FPreg;
+
+ NodeTys.push_back(MVT::f64); // Return register
+ NodeTys.push_back(MVT::Flag); // Returns a flag for later insns
+ Result = DAG.getNode(PPCISD::MFFS, dl, NodeTys, &InFlag, 0);
+ MFFSreg = Result.getValue(0);
+ InFlag = Result.getValue(1);
+
+ NodeTys.clear();
+ NodeTys.push_back(MVT::Flag); // Returns a flag
+ Ops[0] = DAG.getConstant(31, MVT::i32);
+ Ops[1] = InFlag;
+ Result = DAG.getNode(PPCISD::MTFSB1, dl, NodeTys, Ops, 2);
+ InFlag = Result.getValue(0);
+
+ NodeTys.clear();
+ NodeTys.push_back(MVT::Flag); // Returns a flag
+ Ops[0] = DAG.getConstant(30, MVT::i32);
+ Ops[1] = InFlag;
+ Result = DAG.getNode(PPCISD::MTFSB0, dl, NodeTys, Ops, 2);
+ InFlag = Result.getValue(0);
+
+ NodeTys.clear();
+ NodeTys.push_back(MVT::f64); // result of add
+ NodeTys.push_back(MVT::Flag); // Returns a flag
+ Ops[0] = Lo;
+ Ops[1] = Hi;
+ Ops[2] = InFlag;
+ Result = DAG.getNode(PPCISD::FADDRTZ, dl, NodeTys, Ops, 3);
+ FPreg = Result.getValue(0);
+ InFlag = Result.getValue(1);
+
+ NodeTys.clear();
+ NodeTys.push_back(MVT::f64);
+ Ops[0] = DAG.getConstant(1, MVT::i32);
+ Ops[1] = MFFSreg;
+ Ops[2] = FPreg;
+ Ops[3] = InFlag;
+ Result = DAG.getNode(PPCISD::MTFSF, dl, NodeTys, Ops, 4);
+ FPreg = Result.getValue(0);
+
+ // We know the low half is about to be thrown away, so just use something
+ // convenient.
+ Results.push_back(DAG.getNode(ISD::BUILD_PAIR, dl, MVT::ppcf128,
+ FPreg, FPreg));
+ return;
}
+ case ISD::FP_TO_SINT:
+ Results.push_back(LowerFP_TO_INT(SDValue(N, 0), DAG, dl));
+ return;
}
}
MachineBasicBlock *
PPCTargetLowering::EmitAtomicBinary(MachineInstr *MI, MachineBasicBlock *BB,
- bool is64bit, unsigned BinOpcode) {
+ bool is64bit, unsigned BinOpcode) const {
+ // This also handles ATOMIC_SWAP, indicated by BinOpcode==0.
const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
const BasicBlock *LLVM_BB = BB->getBasicBlock();
unsigned ptrA = MI->getOperand(1).getReg();
unsigned ptrB = MI->getOperand(2).getReg();
unsigned incr = MI->getOperand(3).getReg();
+ DebugLoc dl = MI->getDebugLoc();
MachineBasicBlock *loopMBB = F->CreateMachineBasicBlock(LLVM_BB);
MachineBasicBlock *exitMBB = F->CreateMachineBasicBlock(LLVM_BB);
exitMBB->transferSuccessors(BB);
MachineRegisterInfo &RegInfo = F->getRegInfo();
- unsigned TmpReg = RegInfo.createVirtualRegister(
- is64bit ? (const TargetRegisterClass *) &PPC::GPRCRegClass :
- (const TargetRegisterClass *) &PPC::G8RCRegClass);
+ unsigned TmpReg = (!BinOpcode) ? incr :
+ RegInfo.createVirtualRegister(
+ is64bit ? (const TargetRegisterClass *) &PPC::G8RCRegClass :
+ (const TargetRegisterClass *) &PPC::GPRCRegClass);
// thisMBB:
// ...
// bne- loopMBB
// fallthrough --> exitMBB
BB = loopMBB;
- BuildMI(BB, TII->get(is64bit ? PPC::LDARX : PPC::LWARX), dest)
+ BuildMI(BB, dl, TII->get(is64bit ? PPC::LDARX : PPC::LWARX), dest)
.addReg(ptrA).addReg(ptrB);
- BuildMI(BB, TII->get(BinOpcode), TmpReg).addReg(incr).addReg(dest);
- BuildMI(BB, TII->get(is64bit ? PPC::STDCX : PPC::STWCX))
+ if (BinOpcode)
+ BuildMI(BB, dl, TII->get(BinOpcode), TmpReg).addReg(incr).addReg(dest);
+ BuildMI(BB, dl, TII->get(is64bit ? PPC::STDCX : PPC::STWCX))
.addReg(TmpReg).addReg(ptrA).addReg(ptrB);
- BuildMI(BB, TII->get(PPC::BCC))
- .addImm(PPC::PRED_NE).addReg(PPC::CR0).addMBB(loopMBB);
+ BuildMI(BB, dl, TII->get(PPC::BCC))
+ .addImm(PPC::PRED_NE).addReg(PPC::CR0).addMBB(loopMBB);
BB->addSuccessor(loopMBB);
BB->addSuccessor(exitMBB);
}
MachineBasicBlock *
-PPCTargetLowering::EmitPartwordAtomicBinary(MachineInstr *MI,
+PPCTargetLowering::EmitPartwordAtomicBinary(MachineInstr *MI,
MachineBasicBlock *BB,
bool is8bit, // operation
- unsigned BinOpcode) {
+ unsigned BinOpcode) const {
+ // This also handles ATOMIC_SWAP, indicated by BinOpcode==0.
const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
// In 64 bit mode we have to use 64 bits for addresses, even though the
// lwarx/stwcx are 32 bits. With the 32-bit atomics we can use address
unsigned ptrA = MI->getOperand(1).getReg();
unsigned ptrB = MI->getOperand(2).getReg();
unsigned incr = MI->getOperand(3).getReg();
+ DebugLoc dl = MI->getDebugLoc();
MachineBasicBlock *loopMBB = F->CreateMachineBasicBlock(LLVM_BB);
MachineBasicBlock *exitMBB = F->CreateMachineBasicBlock(LLVM_BB);
exitMBB->transferSuccessors(BB);
MachineRegisterInfo &RegInfo = F->getRegInfo();
- const TargetRegisterClass *RC =
- is64bit ? (const TargetRegisterClass *) &PPC::GPRCRegClass :
- (const TargetRegisterClass *) &PPC::G8RCRegClass;
- unsigned TmpReg = RegInfo.createVirtualRegister(RC);
+ const TargetRegisterClass *RC =
+ is64bit ? (const TargetRegisterClass *) &PPC::G8RCRegClass :
+ (const TargetRegisterClass *) &PPC::GPRCRegClass;
unsigned PtrReg = RegInfo.createVirtualRegister(RC);
unsigned Shift1Reg = RegInfo.createVirtualRegister(RC);
unsigned ShiftReg = RegInfo.createVirtualRegister(RC);
unsigned Tmp2Reg = RegInfo.createVirtualRegister(RC);
unsigned Tmp3Reg = RegInfo.createVirtualRegister(RC);
unsigned Tmp4Reg = RegInfo.createVirtualRegister(RC);
+ unsigned TmpDestReg = RegInfo.createVirtualRegister(RC);
unsigned Ptr1Reg;
+ unsigned TmpReg = (!BinOpcode) ? Incr2Reg : RegInfo.createVirtualRegister(RC);
// thisMBB:
// ...
// anywhere in the word. Hence all this nasty bookkeeping code.
// add ptr1, ptrA, ptrB [copy if ptrA==0]
// rlwinm shift1, ptr1, 3, 27, 28 [3, 27, 27]
- // xor shift, shift1, 24 [16]
+ // xori shift, shift1, 24 [16]
// rlwinm ptr, ptr1, 0, 0, 29
// slw incr2, incr, shift
// li mask2, 255 [li mask3, 0; ori mask2, mask3, 65535]
// slw mask, mask2, shift
// loopMBB:
- // l[wd]arx dest, ptr
- // add tmp, dest, incr2
- // andc tmp2, dest, mask
+ // lwarx tmpDest, ptr
+ // add tmp, tmpDest, incr2
+ // andc tmp2, tmpDest, mask
// and tmp3, tmp, mask
// or tmp4, tmp3, tmp2
- // st[wd]cx. tmp4, ptr
+ // stwcx. tmp4, ptr
// bne- loopMBB
// fallthrough --> exitMBB
+ // srw dest, tmpDest, shift
if (ptrA!=PPC::R0) {
Ptr1Reg = RegInfo.createVirtualRegister(RC);
- BuildMI(BB, TII->get(is64bit ? PPC::ADD8 : PPC::ADD4), Ptr1Reg)
+ BuildMI(BB, dl, TII->get(is64bit ? PPC::ADD8 : PPC::ADD4), Ptr1Reg)
.addReg(ptrA).addReg(ptrB);
} else {
Ptr1Reg = ptrB;
}
- BuildMI(BB, TII->get(PPC::RLWINM), Shift1Reg).addReg(Ptr1Reg)
+ BuildMI(BB, dl, TII->get(PPC::RLWINM), Shift1Reg).addReg(Ptr1Reg)
.addImm(3).addImm(27).addImm(is8bit ? 28 : 27);
- BuildMI(BB, TII->get(is64bit ? PPC::XOR8 : PPC::XOR), ShiftReg)
+ BuildMI(BB, dl, TII->get(is64bit ? PPC::XORI8 : PPC::XORI), ShiftReg)
.addReg(Shift1Reg).addImm(is8bit ? 24 : 16);
if (is64bit)
- BuildMI(BB, TII->get(PPC::RLDICR), PtrReg)
+ BuildMI(BB, dl, TII->get(PPC::RLDICR), PtrReg)
.addReg(Ptr1Reg).addImm(0).addImm(61);
else
- BuildMI(BB, TII->get(PPC::RLWINM), PtrReg)
+ BuildMI(BB, dl, TII->get(PPC::RLWINM), PtrReg)
.addReg(Ptr1Reg).addImm(0).addImm(0).addImm(29);
- BuildMI(BB, TII->get(PPC::SLW), Incr2Reg)
+ BuildMI(BB, dl, TII->get(PPC::SLW), Incr2Reg)
.addReg(incr).addReg(ShiftReg);
if (is8bit)
- BuildMI(BB, TII->get(PPC::LI), Mask2Reg).addImm(255);
+ BuildMI(BB, dl, TII->get(PPC::LI), Mask2Reg).addImm(255);
else {
- BuildMI(BB, TII->get(PPC::LI), Mask3Reg).addImm(0);
- BuildMI(BB, TII->get(PPC::ORI), Mask2Reg).addReg(Mask3Reg).addImm(65535);
+ BuildMI(BB, dl, TII->get(PPC::LI), Mask3Reg).addImm(0);
+ BuildMI(BB, dl, TII->get(PPC::ORI),Mask2Reg).addReg(Mask3Reg).addImm(65535);
}
- BuildMI(BB, TII->get(PPC::SLW), MaskReg)
+ BuildMI(BB, dl, TII->get(PPC::SLW), MaskReg)
.addReg(Mask2Reg).addReg(ShiftReg);
BB = loopMBB;
- BuildMI(BB, TII->get(PPC::LWARX), dest)
+ BuildMI(BB, dl, TII->get(PPC::LWARX), TmpDestReg)
.addReg(PPC::R0).addReg(PtrReg);
- BuildMI(BB, TII->get(BinOpcode), TmpReg).addReg(Incr2Reg).addReg(dest);
- BuildMI(BB, TII->get(is64bit ? PPC::ANDC8 : PPC::ANDC), Tmp2Reg)
- .addReg(dest).addReg(MaskReg);
- BuildMI(BB, TII->get(is64bit ? PPC::AND8 : PPC::AND), Tmp3Reg)
+ if (BinOpcode)
+ BuildMI(BB, dl, TII->get(BinOpcode), TmpReg)
+ .addReg(Incr2Reg).addReg(TmpDestReg);
+ BuildMI(BB, dl, TII->get(is64bit ? PPC::ANDC8 : PPC::ANDC), Tmp2Reg)
+ .addReg(TmpDestReg).addReg(MaskReg);
+ BuildMI(BB, dl, TII->get(is64bit ? PPC::AND8 : PPC::AND), Tmp3Reg)
.addReg(TmpReg).addReg(MaskReg);
- BuildMI(BB, TII->get(is64bit ? PPC::OR8 : PPC::OR), Tmp4Reg)
+ BuildMI(BB, dl, TII->get(is64bit ? PPC::OR8 : PPC::OR), Tmp4Reg)
.addReg(Tmp3Reg).addReg(Tmp2Reg);
- BuildMI(BB, TII->get(PPC::STWCX))
+ BuildMI(BB, dl, TII->get(PPC::STWCX))
.addReg(Tmp4Reg).addReg(PPC::R0).addReg(PtrReg);
- BuildMI(BB, TII->get(PPC::BCC))
- .addImm(PPC::PRED_NE).addReg(PPC::CR0).addMBB(loopMBB);
+ BuildMI(BB, dl, TII->get(PPC::BCC))
+ .addImm(PPC::PRED_NE).addReg(PPC::CR0).addMBB(loopMBB);
BB->addSuccessor(loopMBB);
BB->addSuccessor(exitMBB);
// exitMBB:
// ...
BB = exitMBB;
+ BuildMI(BB, dl, TII->get(PPC::SRW), dest).addReg(TmpDestReg).addReg(ShiftReg);
return BB;
}
MachineBasicBlock *
PPCTargetLowering::EmitInstrWithCustomInserter(MachineInstr *MI,
- MachineBasicBlock *BB) {
+ MachineBasicBlock *BB) const {
const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
// To "insert" these instructions we actually have to insert their
MachineBasicBlock *copy0MBB = F->CreateMachineBasicBlock(LLVM_BB);
MachineBasicBlock *sinkMBB = F->CreateMachineBasicBlock(LLVM_BB);
unsigned SelectPred = MI->getOperand(4).getImm();
- BuildMI(BB, TII->get(PPC::BCC))
+ DebugLoc dl = MI->getDebugLoc();
+ BuildMI(BB, dl, TII->get(PPC::BCC))
.addImm(SelectPred).addReg(MI->getOperand(1).getReg()).addMBB(sinkMBB);
F->insert(It, copy0MBB);
F->insert(It, sinkMBB);
// Next, add the true and fallthrough blocks as its successors.
BB->addSuccessor(copy0MBB);
BB->addSuccessor(sinkMBB);
-
+
// copy0MBB:
// %FalseValue = ...
// # fallthrough to sinkMBB
BB = copy0MBB;
-
+
// Update machine-CFG edges
BB->addSuccessor(sinkMBB);
-
+
// sinkMBB:
// %Result = phi [ %FalseValue, copy0MBB ], [ %TrueValue, thisMBB ]
// ...
BB = sinkMBB;
- BuildMI(BB, TII->get(PPC::PHI), MI->getOperand(0).getReg())
+ BuildMI(BB, dl, TII->get(PPC::PHI), MI->getOperand(0).getReg())
.addReg(MI->getOperand(3).getReg()).addMBB(copy0MBB)
.addReg(MI->getOperand(2).getReg()).addMBB(thisMBB);
}
BB = EmitAtomicBinary(MI, BB, true, PPC::XOR8);
else if (MI->getOpcode() == PPC::ATOMIC_LOAD_NAND_I8)
- BB = EmitPartwordAtomicBinary(MI, BB, true, PPC::NAND);
+ BB = EmitPartwordAtomicBinary(MI, BB, true, PPC::ANDC);
else if (MI->getOpcode() == PPC::ATOMIC_LOAD_NAND_I16)
- BB = EmitPartwordAtomicBinary(MI, BB, false, PPC::NAND);
+ BB = EmitPartwordAtomicBinary(MI, BB, false, PPC::ANDC);
else if (MI->getOpcode() == PPC::ATOMIC_LOAD_NAND_I32)
- BB = EmitAtomicBinary(MI, BB, false, PPC::NAND);
+ BB = EmitAtomicBinary(MI, BB, false, PPC::ANDC);
else if (MI->getOpcode() == PPC::ATOMIC_LOAD_NAND_I64)
- BB = EmitAtomicBinary(MI, BB, true, PPC::NAND8);
+ BB = EmitAtomicBinary(MI, BB, true, PPC::ANDC8);
else if (MI->getOpcode() == PPC::ATOMIC_LOAD_SUB_I8)
BB = EmitPartwordAtomicBinary(MI, BB, true, PPC::SUBF);
else if (MI->getOpcode() == PPC::ATOMIC_LOAD_SUB_I64)
BB = EmitAtomicBinary(MI, BB, true, PPC::SUBF8);
+ else if (MI->getOpcode() == PPC::ATOMIC_SWAP_I8)
+ BB = EmitPartwordAtomicBinary(MI, BB, true, 0);
+ else if (MI->getOpcode() == PPC::ATOMIC_SWAP_I16)
+ BB = EmitPartwordAtomicBinary(MI, BB, false, 0);
+ else if (MI->getOpcode() == PPC::ATOMIC_SWAP_I32)
+ BB = EmitAtomicBinary(MI, BB, false, 0);
+ else if (MI->getOpcode() == PPC::ATOMIC_SWAP_I64)
+ BB = EmitAtomicBinary(MI, BB, true, 0);
+
else if (MI->getOpcode() == PPC::ATOMIC_CMP_SWAP_I32 ||
MI->getOpcode() == PPC::ATOMIC_CMP_SWAP_I64) {
bool is64bit = MI->getOpcode() == PPC::ATOMIC_CMP_SWAP_I64;
unsigned ptrB = MI->getOperand(2).getReg();
unsigned oldval = MI->getOperand(3).getReg();
unsigned newval = MI->getOperand(4).getReg();
+ DebugLoc dl = MI->getDebugLoc();
MachineBasicBlock *loop1MBB = F->CreateMachineBasicBlock(LLVM_BB);
MachineBasicBlock *loop2MBB = F->CreateMachineBasicBlock(LLVM_BB);
// st[wd]cx. dest, ptr
// exitBB:
BB = loop1MBB;
- BuildMI(BB, TII->get(is64bit ? PPC::LDARX : PPC::LWARX), dest)
+ BuildMI(BB, dl, TII->get(is64bit ? PPC::LDARX : PPC::LWARX), dest)
.addReg(ptrA).addReg(ptrB);
- BuildMI(BB, TII->get(is64bit ? PPC::CMPD : PPC::CMPW), PPC::CR0)
+ BuildMI(BB, dl, TII->get(is64bit ? PPC::CMPD : PPC::CMPW), PPC::CR0)
.addReg(oldval).addReg(dest);
- BuildMI(BB, TII->get(PPC::BCC))
+ BuildMI(BB, dl, TII->get(PPC::BCC))
.addImm(PPC::PRED_NE).addReg(PPC::CR0).addMBB(midMBB);
BB->addSuccessor(loop2MBB);
BB->addSuccessor(midMBB);
BB = loop2MBB;
- BuildMI(BB, TII->get(is64bit ? PPC::STDCX : PPC::STWCX))
+ BuildMI(BB, dl, TII->get(is64bit ? PPC::STDCX : PPC::STWCX))
.addReg(newval).addReg(ptrA).addReg(ptrB);
- BuildMI(BB, TII->get(PPC::BCC))
+ BuildMI(BB, dl, TII->get(PPC::BCC))
.addImm(PPC::PRED_NE).addReg(PPC::CR0).addMBB(loop1MBB);
- BuildMI(BB, TII->get(PPC::B)).addMBB(exitMBB);
+ BuildMI(BB, dl, TII->get(PPC::B)).addMBB(exitMBB);
BB->addSuccessor(loop1MBB);
BB->addSuccessor(exitMBB);
-
+
BB = midMBB;
- BuildMI(BB, TII->get(is64bit ? PPC::STDCX : PPC::STWCX))
+ BuildMI(BB, dl, TII->get(is64bit ? PPC::STDCX : PPC::STWCX))
.addReg(dest).addReg(ptrA).addReg(ptrB);
BB->addSuccessor(exitMBB);
// exitMBB:
// ...
BB = exitMBB;
- }
- else if (MI->getOpcode() == PPC::ATOMIC_SWAP_I32 ||
- MI->getOpcode() == PPC::ATOMIC_SWAP_I64) {
- bool is64bit = MI->getOpcode() == PPC::ATOMIC_SWAP_I64;
+ } else if (MI->getOpcode() == PPC::ATOMIC_CMP_SWAP_I8 ||
+ MI->getOpcode() == PPC::ATOMIC_CMP_SWAP_I16) {
+ // We must use 64-bit registers for addresses when targeting 64-bit,
+ // since we're actually doing arithmetic on them. Other registers
+ // can be 32-bit.
+ bool is64bit = PPCSubTarget.isPPC64();
+ bool is8bit = MI->getOpcode() == PPC::ATOMIC_CMP_SWAP_I8;
unsigned dest = MI->getOperand(0).getReg();
unsigned ptrA = MI->getOperand(1).getReg();
unsigned ptrB = MI->getOperand(2).getReg();
- unsigned newval = MI->getOperand(3).getReg();
+ unsigned oldval = MI->getOperand(3).getReg();
+ unsigned newval = MI->getOperand(4).getReg();
+ DebugLoc dl = MI->getDebugLoc();
- MachineBasicBlock *loopMBB = F->CreateMachineBasicBlock(LLVM_BB);
+ MachineBasicBlock *loop1MBB = F->CreateMachineBasicBlock(LLVM_BB);
+ MachineBasicBlock *loop2MBB = F->CreateMachineBasicBlock(LLVM_BB);
+ MachineBasicBlock *midMBB = F->CreateMachineBasicBlock(LLVM_BB);
MachineBasicBlock *exitMBB = F->CreateMachineBasicBlock(LLVM_BB);
- F->insert(It, loopMBB);
+ F->insert(It, loop1MBB);
+ F->insert(It, loop2MBB);
+ F->insert(It, midMBB);
F->insert(It, exitMBB);
exitMBB->transferSuccessors(BB);
+ MachineRegisterInfo &RegInfo = F->getRegInfo();
+ const TargetRegisterClass *RC =
+ is64bit ? (const TargetRegisterClass *) &PPC::G8RCRegClass :
+ (const TargetRegisterClass *) &PPC::GPRCRegClass;
+ unsigned PtrReg = RegInfo.createVirtualRegister(RC);
+ unsigned Shift1Reg = RegInfo.createVirtualRegister(RC);
+ unsigned ShiftReg = RegInfo.createVirtualRegister(RC);
+ unsigned NewVal2Reg = RegInfo.createVirtualRegister(RC);
+ unsigned NewVal3Reg = RegInfo.createVirtualRegister(RC);
+ unsigned OldVal2Reg = RegInfo.createVirtualRegister(RC);
+ unsigned OldVal3Reg = RegInfo.createVirtualRegister(RC);
+ unsigned MaskReg = RegInfo.createVirtualRegister(RC);
+ unsigned Mask2Reg = RegInfo.createVirtualRegister(RC);
+ unsigned Mask3Reg = RegInfo.createVirtualRegister(RC);
+ unsigned Tmp2Reg = RegInfo.createVirtualRegister(RC);
+ unsigned Tmp4Reg = RegInfo.createVirtualRegister(RC);
+ unsigned TmpDestReg = RegInfo.createVirtualRegister(RC);
+ unsigned Ptr1Reg;
+ unsigned TmpReg = RegInfo.createVirtualRegister(RC);
// thisMBB:
// ...
// fallthrough --> loopMBB
- BB->addSuccessor(loopMBB);
+ BB->addSuccessor(loop1MBB);
- // loopMBB:
- // l[wd]arx dest, ptr
- // st[wd]cx. newval, ptr
- // bne- loopMBB
- // fallthrough --> exitMBB
- BB = loopMBB;
- BuildMI(BB, TII->get(is64bit ? PPC::LDARX : PPC::LWARX), dest)
- .addReg(ptrA).addReg(ptrB);
- BuildMI(BB, TII->get(is64bit ? PPC::STDCX : PPC::STWCX))
- .addReg(newval).addReg(ptrA).addReg(ptrB);
- BuildMI(BB, TII->get(PPC::BCC))
- .addImm(PPC::PRED_NE).addReg(PPC::CR0).addMBB(loopMBB);
- BB->addSuccessor(loopMBB);
+ // The 4-byte load must be aligned, while a char or short may be
+ // anywhere in the word. Hence all this nasty bookkeeping code.
+ // add ptr1, ptrA, ptrB [copy if ptrA==0]
+ // rlwinm shift1, ptr1, 3, 27, 28 [3, 27, 27]
+ // xori shift, shift1, 24 [16]
+ // rlwinm ptr, ptr1, 0, 0, 29
+ // slw newval2, newval, shift
+ // slw oldval2, oldval,shift
+ // li mask2, 255 [li mask3, 0; ori mask2, mask3, 65535]
+ // slw mask, mask2, shift
+ // and newval3, newval2, mask
+ // and oldval3, oldval2, mask
+ // loop1MBB:
+ // lwarx tmpDest, ptr
+ // and tmp, tmpDest, mask
+ // cmpw tmp, oldval3
+ // bne- midMBB
+ // loop2MBB:
+ // andc tmp2, tmpDest, mask
+ // or tmp4, tmp2, newval3
+ // stwcx. tmp4, ptr
+ // bne- loop1MBB
+ // b exitBB
+ // midMBB:
+ // stwcx. tmpDest, ptr
+ // exitBB:
+ // srw dest, tmpDest, shift
+ if (ptrA!=PPC::R0) {
+ Ptr1Reg = RegInfo.createVirtualRegister(RC);
+ BuildMI(BB, dl, TII->get(is64bit ? PPC::ADD8 : PPC::ADD4), Ptr1Reg)
+ .addReg(ptrA).addReg(ptrB);
+ } else {
+ Ptr1Reg = ptrB;
+ }
+ BuildMI(BB, dl, TII->get(PPC::RLWINM), Shift1Reg).addReg(Ptr1Reg)
+ .addImm(3).addImm(27).addImm(is8bit ? 28 : 27);
+ BuildMI(BB, dl, TII->get(is64bit ? PPC::XORI8 : PPC::XORI), ShiftReg)
+ .addReg(Shift1Reg).addImm(is8bit ? 24 : 16);
+ if (is64bit)
+ BuildMI(BB, dl, TII->get(PPC::RLDICR), PtrReg)
+ .addReg(Ptr1Reg).addImm(0).addImm(61);
+ else
+ BuildMI(BB, dl, TII->get(PPC::RLWINM), PtrReg)
+ .addReg(Ptr1Reg).addImm(0).addImm(0).addImm(29);
+ BuildMI(BB, dl, TII->get(PPC::SLW), NewVal2Reg)
+ .addReg(newval).addReg(ShiftReg);
+ BuildMI(BB, dl, TII->get(PPC::SLW), OldVal2Reg)
+ .addReg(oldval).addReg(ShiftReg);
+ if (is8bit)
+ BuildMI(BB, dl, TII->get(PPC::LI), Mask2Reg).addImm(255);
+ else {
+ BuildMI(BB, dl, TII->get(PPC::LI), Mask3Reg).addImm(0);
+ BuildMI(BB, dl, TII->get(PPC::ORI), Mask2Reg)
+ .addReg(Mask3Reg).addImm(65535);
+ }
+ BuildMI(BB, dl, TII->get(PPC::SLW), MaskReg)
+ .addReg(Mask2Reg).addReg(ShiftReg);
+ BuildMI(BB, dl, TII->get(PPC::AND), NewVal3Reg)
+ .addReg(NewVal2Reg).addReg(MaskReg);
+ BuildMI(BB, dl, TII->get(PPC::AND), OldVal3Reg)
+ .addReg(OldVal2Reg).addReg(MaskReg);
+
+ BB = loop1MBB;
+ BuildMI(BB, dl, TII->get(PPC::LWARX), TmpDestReg)
+ .addReg(PPC::R0).addReg(PtrReg);
+ BuildMI(BB, dl, TII->get(PPC::AND),TmpReg)
+ .addReg(TmpDestReg).addReg(MaskReg);
+ BuildMI(BB, dl, TII->get(PPC::CMPW), PPC::CR0)
+ .addReg(TmpReg).addReg(OldVal3Reg);
+ BuildMI(BB, dl, TII->get(PPC::BCC))
+ .addImm(PPC::PRED_NE).addReg(PPC::CR0).addMBB(midMBB);
+ BB->addSuccessor(loop2MBB);
+ BB->addSuccessor(midMBB);
+
+ BB = loop2MBB;
+ BuildMI(BB, dl, TII->get(PPC::ANDC),Tmp2Reg)
+ .addReg(TmpDestReg).addReg(MaskReg);
+ BuildMI(BB, dl, TII->get(PPC::OR),Tmp4Reg)
+ .addReg(Tmp2Reg).addReg(NewVal3Reg);
+ BuildMI(BB, dl, TII->get(PPC::STWCX)).addReg(Tmp4Reg)
+ .addReg(PPC::R0).addReg(PtrReg);
+ BuildMI(BB, dl, TII->get(PPC::BCC))
+ .addImm(PPC::PRED_NE).addReg(PPC::CR0).addMBB(loop1MBB);
+ BuildMI(BB, dl, TII->get(PPC::B)).addMBB(exitMBB);
+ BB->addSuccessor(loop1MBB);
BB->addSuccessor(exitMBB);
-
+
+ BB = midMBB;
+ BuildMI(BB, dl, TII->get(PPC::STWCX)).addReg(TmpDestReg)
+ .addReg(PPC::R0).addReg(PtrReg);
+ BB->addSuccessor(exitMBB);
+
// exitMBB:
// ...
BB = exitMBB;
- }
- else {
- assert(0 && "Unexpected instr type to insert");
+ BuildMI(BB, dl, TII->get(PPC::SRW),dest).addReg(TmpReg).addReg(ShiftReg);
+ } else {
+ LLVM_UNREACHABLE("Unexpected instr type to insert");
}
F->DeleteMachineInstr(MI); // The pseudo instruction is gone now.
// Target Optimization Hooks
//===----------------------------------------------------------------------===//
-SDValue PPCTargetLowering::PerformDAGCombine(SDNode *N,
- DAGCombinerInfo &DCI) const {
+SDValue PPCTargetLowering::PerformDAGCombine(SDNode *N,
+ DAGCombinerInfo &DCI) const {
TargetMachine &TM = getTargetMachine();
SelectionDAG &DAG = DCI.DAG;
+ DebugLoc dl = N->getDebugLoc();
switch (N->getOpcode()) {
default: break;
case PPCISD::SHL:
if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(N->getOperand(0))) {
- if (C->getValue() == 0) // 0 << V -> 0.
+ if (C->getZExtValue() == 0) // 0 << V -> 0.
return N->getOperand(0);
}
break;
case PPCISD::SRL:
if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(N->getOperand(0))) {
- if (C->getValue() == 0) // 0 >>u V -> 0.
+ if (C->getZExtValue() == 0) // 0 >>u V -> 0.
return N->getOperand(0);
}
break;
case PPCISD::SRA:
if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(N->getOperand(0))) {
- if (C->getValue() == 0 || // 0 >>s V -> 0.
+ if (C->getZExtValue() == 0 || // 0 >>s V -> 0.
C->isAllOnesValue()) // -1 >>s V -> -1.
return N->getOperand(0);
}
break;
-
+
case ISD::SINT_TO_FP:
if (TM.getSubtarget<PPCSubtarget>().has64BitSupport()) {
if (N->getOperand(0).getOpcode() == ISD::FP_TO_SINT) {
N->getOperand(0).getOperand(0).getValueType() != MVT::ppcf128) {
SDValue Val = N->getOperand(0).getOperand(0);
if (Val.getValueType() == MVT::f32) {
- Val = DAG.getNode(ISD::FP_EXTEND, MVT::f64, Val);
- DCI.AddToWorklist(Val.Val);
+ Val = DAG.getNode(ISD::FP_EXTEND, dl, MVT::f64, Val);
+ DCI.AddToWorklist(Val.getNode());
}
-
- Val = DAG.getNode(PPCISD::FCTIDZ, MVT::f64, Val);
- DCI.AddToWorklist(Val.Val);
- Val = DAG.getNode(PPCISD::FCFID, MVT::f64, Val);
- DCI.AddToWorklist(Val.Val);
+
+ Val = DAG.getNode(PPCISD::FCTIDZ, dl, MVT::f64, Val);
+ DCI.AddToWorklist(Val.getNode());
+ Val = DAG.getNode(PPCISD::FCFID, dl, MVT::f64, Val);
+ DCI.AddToWorklist(Val.getNode());
if (N->getValueType(0) == MVT::f32) {
- Val = DAG.getNode(ISD::FP_ROUND, MVT::f32, Val,
+ Val = DAG.getNode(ISD::FP_ROUND, dl, MVT::f32, Val,
DAG.getIntPtrConstant(0));
- DCI.AddToWorklist(Val.Val);
+ DCI.AddToWorklist(Val.getNode());
}
return Val;
} else if (N->getOperand(0).getValueType() == MVT::i32) {
N->getOperand(1).getOperand(0).getValueType() != MVT::ppcf128) {
SDValue Val = N->getOperand(1).getOperand(0);
if (Val.getValueType() == MVT::f32) {
- Val = DAG.getNode(ISD::FP_EXTEND, MVT::f64, Val);
- DCI.AddToWorklist(Val.Val);
+ Val = DAG.getNode(ISD::FP_EXTEND, dl, MVT::f64, Val);
+ DCI.AddToWorklist(Val.getNode());
}
- Val = DAG.getNode(PPCISD::FCTIWZ, MVT::f64, Val);
- DCI.AddToWorklist(Val.Val);
+ Val = DAG.getNode(PPCISD::FCTIWZ, dl, MVT::f64, Val);
+ DCI.AddToWorklist(Val.getNode());
- Val = DAG.getNode(PPCISD::STFIWX, MVT::Other, N->getOperand(0), Val,
+ Val = DAG.getNode(PPCISD::STFIWX, dl, MVT::Other, N->getOperand(0), Val,
N->getOperand(2), N->getOperand(3));
- DCI.AddToWorklist(Val.Val);
+ DCI.AddToWorklist(Val.getNode());
return Val;
}
-
+
// Turn STORE (BSWAP) -> sthbrx/stwbrx.
if (N->getOperand(1).getOpcode() == ISD::BSWAP &&
- N->getOperand(1).Val->hasOneUse() &&
+ N->getOperand(1).getNode()->hasOneUse() &&
(N->getOperand(1).getValueType() == MVT::i32 ||
N->getOperand(1).getValueType() == MVT::i16)) {
SDValue BSwapOp = N->getOperand(1).getOperand(0);
// Do an any-extend to 32-bits if this is a half-word input.
if (BSwapOp.getValueType() == MVT::i16)
- BSwapOp = DAG.getNode(ISD::ANY_EXTEND, MVT::i32, BSwapOp);
+ BSwapOp = DAG.getNode(ISD::ANY_EXTEND, dl, MVT::i32, BSwapOp);
- return DAG.getNode(PPCISD::STBRX, MVT::Other, N->getOperand(0), BSwapOp,
- N->getOperand(2), N->getOperand(3),
+ return DAG.getNode(PPCISD::STBRX, dl, MVT::Other, N->getOperand(0),
+ BSwapOp, N->getOperand(2), N->getOperand(3),
DAG.getValueType(N->getOperand(1).getValueType()));
}
break;
case ISD::BSWAP:
// Turn BSWAP (LOAD) -> lhbrx/lwbrx.
- if (ISD::isNON_EXTLoad(N->getOperand(0).Val) &&
+ if (ISD::isNON_EXTLoad(N->getOperand(0).getNode()) &&
N->getOperand(0).hasOneUse() &&
(N->getValueType(0) == MVT::i32 || N->getValueType(0) == MVT::i16)) {
SDValue Load = N->getOperand(0);
MO, // MemOperand
DAG.getValueType(N->getValueType(0)) // VT
};
- SDValue BSLoad = DAG.getNode(PPCISD::LBRX, VTs, Ops, 4);
+ SDValue BSLoad = DAG.getNode(PPCISD::LBRX, dl, VTs, Ops, 4);
- // If this is an i16 load, insert the truncate.
+ // If this is an i16 load, insert the truncate.
SDValue ResVal = BSLoad;
if (N->getValueType(0) == MVT::i16)
- ResVal = DAG.getNode(ISD::TRUNCATE, MVT::i16, BSLoad);
-
+ ResVal = DAG.getNode(ISD::TRUNCATE, dl, MVT::i16, BSLoad);
+
// First, combine the bswap away. This makes the value produced by the
// load dead.
DCI.CombineTo(N, ResVal);
// Next, combine the load away, we give it a bogus result value but a real
// chain result. The result value is dead because the bswap is dead.
- DCI.CombineTo(Load.Val, ResVal, BSLoad.getValue(1));
-
+ DCI.CombineTo(Load.getNode(), ResVal, BSLoad.getValue(1));
+
// Return N so it doesn't get rechecked!
return SDValue(N, 0);
}
-
+
break;
case PPCISD::VCMP: {
// If a VCMPo node already exists with exactly the same operands as this
if (!N->getOperand(0).hasOneUse() &&
!N->getOperand(1).hasOneUse() &&
!N->getOperand(2).hasOneUse()) {
-
+
// Scan all of the users of the LHS, looking for VCMPo's that match.
SDNode *VCMPoNode = 0;
-
- SDNode *LHSN = N->getOperand(0).Val;
+
+ SDNode *LHSN = N->getOperand(0).getNode();
for (SDNode::use_iterator UI = LHSN->use_begin(), E = LHSN->use_end();
UI != E; ++UI)
if (UI->getOpcode() == PPCISD::VCMPo &&
VCMPoNode = *UI;
break;
}
-
+
// If there is no VCMPo node, or if the flag value has a single use, don't
// transform this.
if (!VCMPoNode || VCMPoNode->hasNUsesOfValue(0, 1))
break;
-
- // Look at the (necessarily single) use of the flag value. If it has a
+
+ // Look at the (necessarily single) use of the flag value. If it has a
// chain, this transformation is more complex. Note that multiple things
// could use the value result, which we should ignore.
SDNode *FlagUser = 0;
- for (SDNode::use_iterator UI = VCMPoNode->use_begin();
+ for (SDNode::use_iterator UI = VCMPoNode->use_begin();
FlagUser == 0; ++UI) {
assert(UI != VCMPoNode->use_end() && "Didn't find user!");
SDNode *User = *UI;
}
}
}
-
+
// If the user is a MFCR instruction, we know this is safe. Otherwise we
// give up for right now.
if (FlagUser->getOpcode() == PPCISD::MFCR)
SDValue LHS = N->getOperand(2), RHS = N->getOperand(3);
int CompareOpc;
bool isDot;
-
+
if (LHS.getOpcode() == ISD::INTRINSIC_WO_CHAIN &&
isa<ConstantSDNode>(RHS) && (CC == ISD::SETEQ || CC == ISD::SETNE) &&
getAltivecCompareInfo(LHS, CompareOpc, isDot)) {
assert(isDot && "Can't compare against a vector result!");
-
+
// If this is a comparison against something other than 0/1, then we know
// that the condition is never/always true.
- unsigned Val = cast<ConstantSDNode>(RHS)->getValue();
+ unsigned Val = cast<ConstantSDNode>(RHS)->getZExtValue();
if (Val != 0 && Val != 1) {
if (CC == ISD::SETEQ) // Cond never true, remove branch.
return N->getOperand(0);
// Always !=, turn it into an unconditional branch.
- return DAG.getNode(ISD::BR, MVT::Other,
+ return DAG.getNode(ISD::BR, dl, MVT::Other,
N->getOperand(0), N->getOperand(4));
}
-
+
bool BranchOnWhenPredTrue = (CC == ISD::SETEQ) ^ (Val == 0);
-
+
// Create the PPCISD altivec 'dot' comparison node.
std::vector<MVT> VTs;
SDValue Ops[] = {
};
VTs.push_back(LHS.getOperand(2).getValueType());
VTs.push_back(MVT::Flag);
- SDValue CompNode = DAG.getNode(PPCISD::VCMPo, VTs, Ops, 3);
-
+ SDValue CompNode = DAG.getNode(PPCISD::VCMPo, dl, VTs, Ops, 3);
+
// Unpack the result based on how the target uses it.
PPC::Predicate CompOpc;
- switch (cast<ConstantSDNode>(LHS.getOperand(1))->getValue()) {
+ switch (cast<ConstantSDNode>(LHS.getOperand(1))->getZExtValue()) {
default: // Can't happen, don't crash on invalid number though.
case 0: // Branch on the value of the EQ bit of CR6.
CompOpc = BranchOnWhenPredTrue ? PPC::PRED_EQ : PPC::PRED_NE;
break;
}
- return DAG.getNode(PPCISD::COND_BRANCH, MVT::Other, N->getOperand(0),
+ return DAG.getNode(PPCISD::COND_BRANCH, dl, MVT::Other, N->getOperand(0),
DAG.getConstant(CompOpc, MVT::i32),
DAG.getRegister(PPC::CR6, MVT::i32),
N->getOperand(4), CompNode.getValue(1));
break;
}
}
-
+
return SDValue();
}
void PPCTargetLowering::computeMaskedBitsForTargetNode(const SDValue Op,
const APInt &Mask,
- APInt &KnownZero,
+ APInt &KnownZero,
APInt &KnownOne,
const SelectionDAG &DAG,
unsigned Depth) const {
break;
}
case ISD::INTRINSIC_WO_CHAIN: {
- switch (cast<ConstantSDNode>(Op.getOperand(0))->getValue()) {
+ switch (cast<ConstantSDNode>(Op.getOperand(0))->getZExtValue()) {
default: break;
case Intrinsic::ppc_altivec_vcmpbfp_p:
case Intrinsic::ppc_altivec_vcmpeqfp_p:
case Intrinsic::ppc_altivec_vcmpgtuw_p:
KnownZero = ~1U; // All bits but the low one are known to be zero.
break;
- }
+ }
}
}
}
/// getConstraintType - Given a constraint, return the type of
/// constraint it is for this target.
-PPCTargetLowering::ConstraintType
+PPCTargetLowering::ConstraintType
PPCTargetLowering::getConstraintType(const std::string &Constraint) const {
if (Constraint.size() == 1) {
switch (Constraint[0]) {
return TargetLowering::getConstraintType(Constraint);
}
-std::pair<unsigned, const TargetRegisterClass*>
+std::pair<unsigned, const TargetRegisterClass*>
PPCTargetLowering::getRegForInlineAsmConstraint(const std::string &Constraint,
MVT VT) const {
if (Constraint.size() == 1) {
else if (VT == MVT::f64)
return std::make_pair(0U, PPC::F8RCRegisterClass);
break;
- case 'v':
+ case 'v':
return std::make_pair(0U, PPC::VRRCRegisterClass);
case 'y': // crrc
return std::make_pair(0U, PPC::CRRCRegisterClass);
}
}
-
+
return TargetLowering::getRegForInlineAsmConstraint(Constraint, VT);
}
/// LowerAsmOperandForConstraint - Lower the specified operand into the Ops
-/// vector. If it is invalid, don't add anything to Ops.
+/// vector. If it is invalid, don't add anything to Ops. If hasMemory is true
+/// it means one of the asm constraint of the inline asm instruction being
+/// processed is 'm'.
void PPCTargetLowering::LowerAsmOperandForConstraint(SDValue Op, char Letter,
+ bool hasMemory,
std::vector<SDValue>&Ops,
SelectionDAG &DAG) const {
SDValue Result(0,0);
case 'P': {
ConstantSDNode *CST = dyn_cast<ConstantSDNode>(Op);
if (!CST) return; // Must be an immediate to match.
- unsigned Value = CST->getValue();
+ unsigned Value = CST->getZExtValue();
switch (Letter) {
- default: assert(0 && "Unknown constraint letter!");
+ default: LLVM_UNREACHABLE("Unknown constraint letter!");
case 'I': // "I" is a signed 16-bit constant.
if ((short)Value == (int)Value)
Result = DAG.getTargetConstant(Value, Op.getValueType());
if ((int)Value > 0 && isPowerOf2_32(Value))
Result = DAG.getTargetConstant(Value, Op.getValueType());
break;
- case 'O': // "O" is the constant zero.
+ case 'O': // "O" is the constant zero.
if (Value == 0)
Result = DAG.getTargetConstant(Value, Op.getValueType());
break;
break;
}
}
-
- if (Result.Val) {
+
+ if (Result.getNode()) {
Ops.push_back(Result);
return;
}
-
+
// Handle standard constraint letters.
- TargetLowering::LowerAsmOperandForConstraint(Op, Letter, Ops, DAG);
+ TargetLowering::LowerAsmOperandForConstraint(Op, Letter, hasMemory, Ops, DAG);
}
// isLegalAddressingMode - Return true if the addressing mode represented
// by AM is legal for this target, for a load/store of the specified type.
-bool PPCTargetLowering::isLegalAddressingMode(const AddrMode &AM,
+bool PPCTargetLowering::isLegalAddressingMode(const AddrMode &AM,
const Type *Ty) const {
// FIXME: PPC does not allow r+i addressing modes for vectors!
-
+
// PPC allows a sign-extended 16-bit immediate field.
if (AM.BaseOffs <= -(1LL << 16) || AM.BaseOffs >= (1LL << 16)-1)
return false;
-
+
// No global is ever allowed as a base.
if (AM.BaseGV)
return false;
-
- // PPC only support r+r,
+
+ // PPC only support r+r,
switch (AM.Scale) {
case 0: // "r+i" or just "i", depending on HasBaseReg.
break;
// No other scales are supported.
return false;
}
-
+
return true;
}
}
bool PPCTargetLowering::isLegalAddressImmediate(llvm::GlobalValue* GV) const {
- return false;
+ return false;
}
SDValue PPCTargetLowering::LowerRETURNADDR(SDValue Op, SelectionDAG &DAG) {
- // Depths > 0 not supported yet!
- if (cast<ConstantSDNode>(Op.getOperand(0))->getValue() > 0)
+ DebugLoc dl = Op.getDebugLoc();
+ // Depths > 0 not supported yet!
+ if (cast<ConstantSDNode>(Op.getOperand(0))->getZExtValue() > 0)
return SDValue();
MachineFunction &MF = DAG.getMachineFunction();
// Make sure the function really does not optimize away the store of the RA
// to the stack.
FuncInfo->setLRStoreRequired();
- return DAG.getLoad(getPointerTy(), DAG.getEntryNode(), RetAddrFI, NULL, 0);
+ return DAG.getLoad(getPointerTy(), dl,
+ DAG.getEntryNode(), RetAddrFI, NULL, 0);
}
SDValue PPCTargetLowering::LowerFRAMEADDR(SDValue Op, SelectionDAG &DAG) {
- // Depths > 0 not supported yet!
- if (cast<ConstantSDNode>(Op.getOperand(0))->getValue() > 0)
+ DebugLoc dl = Op.getDebugLoc();
+ // Depths > 0 not supported yet!
+ if (cast<ConstantSDNode>(Op.getOperand(0))->getZExtValue() > 0)
return SDValue();
-
+
MVT PtrVT = DAG.getTargetLoweringInfo().getPointerTy();
bool isPPC64 = PtrVT == MVT::i64;
-
+
MachineFunction &MF = DAG.getMachineFunction();
MachineFrameInfo *MFI = MF.getFrameInfo();
- bool is31 = (NoFramePointerElim || MFI->hasVarSizedObjects())
+ bool is31 = (NoFramePointerElim || MFI->hasVarSizedObjects())
&& MFI->getStackSize();
if (isPPC64)
- return DAG.getCopyFromReg(DAG.getEntryNode(), is31 ? PPC::X31 : PPC::X1,
+ return DAG.getCopyFromReg(DAG.getEntryNode(), dl, is31 ? PPC::X31 : PPC::X1,
MVT::i64);
else
- return DAG.getCopyFromReg(DAG.getEntryNode(), is31 ? PPC::R31 : PPC::R1,
+ return DAG.getCopyFromReg(DAG.getEntryNode(), dl, is31 ? PPC::R31 : PPC::R1,
MVT::i32);
}
+
+bool
+PPCTargetLowering::isOffsetFoldingLegal(const GlobalAddressSDNode *GA) const {
+ // The PowerPC target isn't yet aware of offsets.
+ return false;
+}
+
+MVT PPCTargetLowering::getOptimalMemOpType(uint64_t Size, unsigned Align,
+ bool isSrcConst, bool isSrcStr,
+ SelectionDAG &DAG) const {
+ if (this->PPCSubTarget.isPPC64()) {
+ return MVT::i64;
+ } else {
+ return MVT::i32;
+ }
+}
projects / oota-llvm.git / blobdiff