#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
+#include "llvm/CodeGen/DwarfWriter.h"
+#include "llvm/Analysis/DebugInfo.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Target/TargetInstrInfo.h"
#include "llvm/Target/TargetLowering.h"
using namespace llvm;
unsigned FastISel::getRegForValue(Value *V) {
- MVT::SimpleValueType VT = TLI.getValueType(V->getType()).getSimpleVT();
+ MVT RealVT = TLI.getValueType(V->getType(), /*AllowUnknown=*/true);
+ // Don't handle non-simple values in FastISel.
+ if (!RealVT.isSimple())
+ return 0;
// Ignore illegal types. We must do this before looking up the value
// in ValueMap because Arguments are given virtual registers regardless
// of whether FastISel can handle them.
+ MVT::SimpleValueType VT = RealVT.getSimpleVT();
if (!TLI.isTypeLegal(VT)) {
// Promote MVT::i1 to a legal type though, because it's common and easy.
if (VT == MVT::i1)
} else if (isa<ConstantPointerNull>(V)) {
// Translate this as an integer zero so that it can be
// local-CSE'd with actual integer zeros.
- Reg = getRegForValue(Constant::getNullValue(TD.getIntPtrType()));
+ Reg = getRegForValue(V->getContext().getNullValue(TD.getIntPtrType()));
} else if (ConstantFP *CF = dyn_cast<ConstantFP>(V)) {
Reg = FastEmit_f(VT, VT, ISD::ConstantFP, CF);
if (isExact) {
APInt IntVal(IntBitWidth, 2, x);
- unsigned IntegerReg = getRegForValue(ConstantInt::get(IntVal));
+ unsigned IntegerReg =
+ getRegForValue(ConstantInt::get(V->getContext(), IntVal));
if (IntegerReg != 0)
Reg = FastEmit_r(IntVT.getSimpleVT(), VT, ISD::SINT_TO_FP, IntegerReg);
}
Reg = LocalValueMap[CE];
} else if (isa<UndefValue>(V)) {
Reg = createResultReg(TLI.getRegClassFor(VT));
- BuildMI(MBB, TII.get(TargetInstrInfo::IMPLICIT_DEF), Reg);
+ BuildMI(MBB, DL, TII.get(TargetInstrInfo::IMPLICIT_DEF), Reg);
}
// If target-independent code couldn't handle the value, give target-specific
/// NOTE: This is only necessary because we might select a block that uses
/// a value before we select the block that defines the value. It might be
/// possible to fix this by selecting blocks in reverse postorder.
-void FastISel::UpdateValueMap(Value* I, unsigned Reg) {
+unsigned FastISel::UpdateValueMap(Value* I, unsigned Reg) {
if (!isa<Instruction>(I)) {
LocalValueMap[I] = Reg;
- return;
+ return Reg;
+ }
+
+ unsigned &AssignedReg = ValueMap[I];
+ if (AssignedReg == 0)
+ AssignedReg = Reg;
+ else if (Reg != AssignedReg) {
+ const TargetRegisterClass *RegClass = MRI.getRegClass(Reg);
+ TII.copyRegToReg(*MBB, MBB->end(), AssignedReg,
+ Reg, RegClass, RegClass);
}
- if (!ValueMap.count(I))
- ValueMap[I] = Reg;
- else
- TII.copyRegToReg(*MBB, MBB->end(), ValueMap[I],
- Reg, MRI.getRegClass(Reg), MRI.getRegClass(Reg));
+ return AssignedReg;
}
unsigned FastISel::getRegForGEPIndex(Value *Idx) {
if (ConstantInt *CI = dyn_cast<ConstantInt>(Idx)) {
if (CI->getZExtValue() == 0) continue;
uint64_t Offs =
- TD.getTypePaddedSize(Ty)*cast<ConstantInt>(CI)->getSExtValue();
+ TD.getTypeAllocSize(Ty)*cast<ConstantInt>(CI)->getSExtValue();
N = FastEmit_ri_(VT, ISD::ADD, N, Offs, VT);
if (N == 0)
// Unhandled operand. Halt "fast" selection and bail.
}
// N = N + Idx * ElementSize;
- uint64_t ElementSize = TD.getTypePaddedSize(Ty);
+ uint64_t ElementSize = TD.getTypeAllocSize(Ty);
unsigned IdxN = getRegForGEPIndex(Idx);
if (IdxN == 0)
// Unhandled operand. Halt "fast" selection and bail.
default: break;
case Intrinsic::dbg_stoppoint: {
DbgStopPointInst *SPI = cast<DbgStopPointInst>(I);
- if (MMI && SPI->getContext() && MMI->Verify(SPI->getContext())) {
- DebugInfoDesc *DD = MMI->getDescFor(SPI->getContext());
- assert(DD && "Not a debug information descriptor");
- const CompileUnitDesc *CompileUnit = cast<CompileUnitDesc>(DD);
- unsigned SrcFile = MMI->RecordSource(CompileUnit);
- unsigned Line = SPI->getLine();
- unsigned Col = SPI->getColumn();
- unsigned ID = MMI->RecordSourceLine(Line, Col, SrcFile);
- const TargetInstrDesc &II = TII.get(TargetInstrInfo::DBG_LABEL);
- BuildMI(MBB, II).addImm(ID);
- }
+ if (isValidDebugInfoIntrinsic(*SPI, CodeGenOpt::None))
+ setCurDebugLoc(ExtractDebugLocation(*SPI, MF.getDebugLocInfo()));
return true;
}
case Intrinsic::dbg_region_start: {
DbgRegionStartInst *RSI = cast<DbgRegionStartInst>(I);
- if (MMI && RSI->getContext() && MMI->Verify(RSI->getContext())) {
- unsigned ID = MMI->RecordRegionStart(RSI->getContext());
+ if (isValidDebugInfoIntrinsic(*RSI, CodeGenOpt::None) && DW
+ && DW->ShouldEmitDwarfDebug()) {
+ unsigned ID =
+ DW->RecordRegionStart(cast<GlobalVariable>(RSI->getContext()));
const TargetInstrDesc &II = TII.get(TargetInstrInfo::DBG_LABEL);
- BuildMI(MBB, II).addImm(ID);
+ BuildMI(MBB, DL, II).addImm(ID);
}
return true;
}
case Intrinsic::dbg_region_end: {
DbgRegionEndInst *REI = cast<DbgRegionEndInst>(I);
- if (MMI && REI->getContext() && MMI->Verify(REI->getContext())) {
- unsigned ID = MMI->RecordRegionEnd(REI->getContext());
- const TargetInstrDesc &II = TII.get(TargetInstrInfo::DBG_LABEL);
- BuildMI(MBB, II).addImm(ID);
+ if (isValidDebugInfoIntrinsic(*REI, CodeGenOpt::None) && DW
+ && DW->ShouldEmitDwarfDebug()) {
+ unsigned ID = 0;
+ DISubprogram Subprogram(cast<GlobalVariable>(REI->getContext()));
+ if (isInlinedFnEnd(*REI, MF.getFunction())) {
+ // This is end of an inlined function.
+ const TargetInstrDesc &II = TII.get(TargetInstrInfo::DBG_LABEL);
+ ID = DW->RecordInlinedFnEnd(Subprogram);
+ if (ID)
+ // Returned ID is 0 if this is unbalanced "end of inlined
+ // scope". This could happen if optimizer eats dbg intrinsics
+ // or "beginning of inlined scope" is not recoginized due to
+ // missing location info. In such cases, ignore this region.end.
+ BuildMI(MBB, DL, II).addImm(ID);
+ } else {
+ const TargetInstrDesc &II = TII.get(TargetInstrInfo::DBG_LABEL);
+ ID = DW->RecordRegionEnd(cast<GlobalVariable>(REI->getContext()));
+ BuildMI(MBB, DL, II).addImm(ID);
+ }
}
return true;
}
case Intrinsic::dbg_func_start: {
- if (!MMI) return true;
DbgFuncStartInst *FSI = cast<DbgFuncStartInst>(I);
- Value *SP = FSI->getSubprogram();
- if (SP && MMI->Verify(SP)) {
- // llvm.dbg.func.start implicitly defines a dbg_stoppoint which is
- // what (most?) gdb expects.
- DebugInfoDesc *DD = MMI->getDescFor(SP);
- assert(DD && "Not a debug information descriptor");
- SubprogramDesc *Subprogram = cast<SubprogramDesc>(DD);
- const CompileUnitDesc *CompileUnit = Subprogram->getFile();
- unsigned SrcFile = MMI->RecordSource(CompileUnit);
- // Record the source line but does not create a label for the normal
- // function start. It will be emitted at asm emission time. However,
- // create a label if this is a beginning of inlined function.
- unsigned LabelID = MMI->RecordSourceLine(Subprogram->getLine(), 0, SrcFile);
- if (MMI->getSourceLines().size() != 1) {
- const TargetInstrDesc &II = TII.get(TargetInstrInfo::DBG_LABEL);
- BuildMI(MBB, II).addImm(LabelID);
- }
+ if (!isValidDebugInfoIntrinsic(*FSI, CodeGenOpt::None) || !DW
+ || !DW->ShouldEmitDwarfDebug())
+ return true;
+
+ if (isInlinedFnStart(*FSI, MF.getFunction())) {
+ // This is a beginning of an inlined function.
+
+ // If llvm.dbg.func.start is seen in a new block before any
+ // llvm.dbg.stoppoint intrinsic then the location info is unknown.
+ // FIXME : Why DebugLoc is reset at the beginning of each block ?
+ DebugLoc PrevLoc = DL;
+ if (PrevLoc.isUnknown())
+ return true;
+ // Record the source line.
+ setCurDebugLoc(ExtractDebugLocation(*FSI, MF.getDebugLocInfo()));
+
+ DebugLocTuple PrevLocTpl = MF.getDebugLocTuple(PrevLoc);
+ DISubprogram SP(cast<GlobalVariable>(FSI->getSubprogram()));
+ unsigned LabelID = DW->RecordInlinedFnStart(SP,
+ DICompileUnit(PrevLocTpl.CompileUnit),
+ PrevLocTpl.Line,
+ PrevLocTpl.Col);
+ const TargetInstrDesc &II = TII.get(TargetInstrInfo::DBG_LABEL);
+ BuildMI(MBB, DL, II).addImm(LabelID);
+ return true;
}
+
+ // This is a beginning of a new function.
+ MF.setDefaultDebugLoc(ExtractDebugLocation(*FSI, MF.getDebugLocInfo()));
+
+ // llvm.dbg.func_start also defines beginning of function scope.
+ DW->RecordRegionStart(cast<GlobalVariable>(FSI->getSubprogram()));
return true;
}
case Intrinsic::dbg_declare: {
DbgDeclareInst *DI = cast<DbgDeclareInst>(I);
+ if (!isValidDebugInfoIntrinsic(*DI, CodeGenOpt::None) || !DW
+ || !DW->ShouldEmitDwarfDebug())
+ return true;
+
Value *Variable = DI->getVariable();
- if (MMI && Variable && MMI->Verify(Variable)) {
- // Determine the address of the declared object.
- Value *Address = DI->getAddress();
- if (BitCastInst *BCI = dyn_cast<BitCastInst>(Address))
- Address = BCI->getOperand(0);
- AllocaInst *AI = dyn_cast<AllocaInst>(Address);
- // Don't handle byval struct arguments, for example.
- if (!AI) break;
- DenseMap<const AllocaInst*, int>::iterator SI =
- StaticAllocaMap.find(AI);
- assert(SI != StaticAllocaMap.end() && "Invalid dbg.declare!");
- int FI = SI->second;
-
- // Determine the debug globalvariable.
- GlobalValue *GV = cast<GlobalVariable>(Variable);
-
- // Build the DECLARE instruction.
- const TargetInstrDesc &II = TII.get(TargetInstrInfo::DECLARE);
- BuildMI(MBB, II).addFrameIndex(FI).addGlobalAddress(GV);
- }
+ Value *Address = DI->getAddress();
+ if (BitCastInst *BCI = dyn_cast<BitCastInst>(Address))
+ Address = BCI->getOperand(0);
+ AllocaInst *AI = dyn_cast<AllocaInst>(Address);
+ // Don't handle byval struct arguments or VLAs, for example.
+ if (!AI) break;
+ DenseMap<const AllocaInst*, int>::iterator SI =
+ StaticAllocaMap.find(AI);
+ if (SI == StaticAllocaMap.end()) break; // VLAs.
+ int FI = SI->second;
+
+ // Determine the debug globalvariable.
+ GlobalValue *GV = cast<GlobalVariable>(Variable);
+
+ // Build the DECLARE instruction.
+ const TargetInstrDesc &II = TII.get(TargetInstrInfo::DECLARE);
+ MachineInstr *DeclareMI
+ = BuildMI(MBB, DL, II).addFrameIndex(FI).addGlobalAddress(GV);
+ DIVariable DV(cast<GlobalVariable>(GV));
+ DW->RecordVariableScope(DV, DeclareMI);
return true;
}
case Intrinsic::eh_exception: {
switch (TLI.getOperationAction(ISD::EXCEPTIONADDR, VT)) {
default: break;
case TargetLowering::Expand: {
- if (!MBB->isLandingPad()) {
- // FIXME: Mark exception register as live in. Hack for PR1508.
- unsigned Reg = TLI.getExceptionAddressRegister();
- if (Reg) MBB->addLiveIn(Reg);
- }
+ assert(MBB->isLandingPad() && "Call to eh.exception not in landing pad!");
unsigned Reg = TLI.getExceptionAddressRegister();
const TargetRegisterClass *RC = TLI.getRegClassFor(VT);
unsigned ResultReg = createResultReg(RC);
UpdateValueMap(I, ResultReg);
} else {
unsigned ResultReg =
- getRegForValue(Constant::getNullValue(I->getType()));
+ getRegForValue(I->getContext().getNullValue(I->getType()));
UpdateValueMap(I, ResultReg);
}
return true;
MVT DstVT = TLI.getValueType(I->getType());
if (SrcVT == MVT::Other || !SrcVT.isSimple() ||
- DstVT == MVT::Other || !DstVT.isSimple() ||
- !TLI.isTypeLegal(DstVT))
+ DstVT == MVT::Other || !DstVT.isSimple())
// Unhandled type. Halt "fast" selection and bail.
return false;
+ // Check if the destination type is legal. Or as a special case,
+ // it may be i1 if we're doing a truncate because that's
+ // easy and somewhat common.
+ if (!TLI.isTypeLegal(DstVT))
+ if (DstVT != MVT::i1 || Opcode != ISD::TRUNCATE)
+ // Unhandled type. Halt "fast" selection and bail.
+ return false;
+
// Check if the source operand is legal. Or as a special case,
// it may be i1 if we're doing zero-extension because that's
- // trivially easy and somewhat common.
- if (!TLI.isTypeLegal(SrcVT)) {
- if (SrcVT == MVT::i1 && Opcode == ISD::ZERO_EXTEND)
- SrcVT = TLI.getTypeToTransformTo(SrcVT);
- else
+ // easy and somewhat common.
+ if (!TLI.isTypeLegal(SrcVT))
+ if (SrcVT != MVT::i1 || Opcode != ISD::ZERO_EXTEND)
// Unhandled type. Halt "fast" selection and bail.
return false;
- }
-
+
unsigned InputReg = getRegForValue(I->getOperand(0));
if (!InputReg)
// Unhandled operand. Halt "fast" selection and bail.
return false;
-
+
+ // If the operand is i1, arrange for the high bits in the register to be zero.
+ if (SrcVT == MVT::i1) {
+ SrcVT = TLI.getTypeToTransformTo(SrcVT);
+ InputReg = FastEmitZExtFromI1(SrcVT.getSimpleVT(), InputReg);
+ if (!InputReg)
+ return false;
+ }
+ // If the result is i1, truncate to the target's type for i1 first.
+ if (DstVT == MVT::i1)
+ DstVT = TLI.getTypeToTransformTo(DstVT);
+
unsigned ResultReg = FastEmit_r(SrcVT.getSimpleVT(),
DstVT.getSimpleVT(),
Opcode,
bool
FastISel::SelectOperator(User *I, unsigned Opcode) {
switch (Opcode) {
- case Instruction::Add: {
- ISD::NodeType Opc = I->getType()->isFPOrFPVector() ? ISD::FADD : ISD::ADD;
- return SelectBinaryOp(I, Opc);
- }
- case Instruction::Sub: {
- ISD::NodeType Opc = I->getType()->isFPOrFPVector() ? ISD::FSUB : ISD::SUB;
- return SelectBinaryOp(I, Opc);
- }
- case Instruction::Mul: {
- ISD::NodeType Opc = I->getType()->isFPOrFPVector() ? ISD::FMUL : ISD::MUL;
- return SelectBinaryOp(I, Opc);
- }
+ case Instruction::Add:
+ return SelectBinaryOp(I, ISD::ADD);
+ case Instruction::FAdd:
+ return SelectBinaryOp(I, ISD::FADD);
+ case Instruction::Sub:
+ return SelectBinaryOp(I, ISD::SUB);
+ case Instruction::FSub:
+ return SelectBinaryOp(I, ISD::FSUB);
+ case Instruction::Mul:
+ return SelectBinaryOp(I, ISD::MUL);
+ case Instruction::FMul:
+ return SelectBinaryOp(I, ISD::FMUL);
case Instruction::SDiv:
return SelectBinaryOp(I, ISD::SDIV);
case Instruction::UDiv:
FastISel::FastISel(MachineFunction &mf,
MachineModuleInfo *mmi,
+ DwarfWriter *dw,
DenseMap<const Value *, unsigned> &vm,
DenseMap<const BasicBlock *, MachineBasicBlock *> &bm,
DenseMap<const AllocaInst *, int> &am
#endif
MF(mf),
MMI(mmi),
+ DW(dw),
MRI(MF.getRegInfo()),
MFI(*MF.getFrameInfo()),
MCP(*MF.getConstantPool()),
unsigned ResultReg = createResultReg(RC);
const TargetInstrDesc &II = TII.get(MachineInstOpcode);
- BuildMI(MBB, II, ResultReg);
+ BuildMI(MBB, DL, II, ResultReg);
return ResultReg;
}
const TargetInstrDesc &II = TII.get(MachineInstOpcode);
if (II.getNumDefs() >= 1)
- BuildMI(MBB, II, ResultReg).addReg(Op0);
+ BuildMI(MBB, DL, II, ResultReg).addReg(Op0);
else {
- BuildMI(MBB, II).addReg(Op0);
+ BuildMI(MBB, DL, II).addReg(Op0);
bool InsertedCopy = TII.copyRegToReg(*MBB, MBB->end(), ResultReg,
II.ImplicitDefs[0], RC, RC);
if (!InsertedCopy)
const TargetInstrDesc &II = TII.get(MachineInstOpcode);
if (II.getNumDefs() >= 1)
- BuildMI(MBB, II, ResultReg).addReg(Op0).addReg(Op1);
+ BuildMI(MBB, DL, II, ResultReg).addReg(Op0).addReg(Op1);
else {
- BuildMI(MBB, II).addReg(Op0).addReg(Op1);
+ BuildMI(MBB, DL, II).addReg(Op0).addReg(Op1);
bool InsertedCopy = TII.copyRegToReg(*MBB, MBB->end(), ResultReg,
II.ImplicitDefs[0], RC, RC);
if (!InsertedCopy)
const TargetInstrDesc &II = TII.get(MachineInstOpcode);
if (II.getNumDefs() >= 1)
- BuildMI(MBB, II, ResultReg).addReg(Op0).addImm(Imm);
+ BuildMI(MBB, DL, II, ResultReg).addReg(Op0).addImm(Imm);
else {
- BuildMI(MBB, II).addReg(Op0).addImm(Imm);
+ BuildMI(MBB, DL, II).addReg(Op0).addImm(Imm);
bool InsertedCopy = TII.copyRegToReg(*MBB, MBB->end(), ResultReg,
II.ImplicitDefs[0], RC, RC);
if (!InsertedCopy)
const TargetInstrDesc &II = TII.get(MachineInstOpcode);
if (II.getNumDefs() >= 1)
- BuildMI(MBB, II, ResultReg).addReg(Op0).addFPImm(FPImm);
+ BuildMI(MBB, DL, II, ResultReg).addReg(Op0).addFPImm(FPImm);
else {
- BuildMI(MBB, II).addReg(Op0).addFPImm(FPImm);
+ BuildMI(MBB, DL, II).addReg(Op0).addFPImm(FPImm);
bool InsertedCopy = TII.copyRegToReg(*MBB, MBB->end(), ResultReg,
II.ImplicitDefs[0], RC, RC);
if (!InsertedCopy)
const TargetInstrDesc &II = TII.get(MachineInstOpcode);
if (II.getNumDefs() >= 1)
- BuildMI(MBB, II, ResultReg).addReg(Op0).addReg(Op1).addImm(Imm);
+ BuildMI(MBB, DL, II, ResultReg).addReg(Op0).addReg(Op1).addImm(Imm);
else {
- BuildMI(MBB, II).addReg(Op0).addReg(Op1).addImm(Imm);
+ BuildMI(MBB, DL, II).addReg(Op0).addReg(Op1).addImm(Imm);
bool InsertedCopy = TII.copyRegToReg(*MBB, MBB->end(), ResultReg,
II.ImplicitDefs[0], RC, RC);
if (!InsertedCopy)
const TargetInstrDesc &II = TII.get(MachineInstOpcode);
if (II.getNumDefs() >= 1)
- BuildMI(MBB, II, ResultReg).addImm(Imm);
+ BuildMI(MBB, DL, II, ResultReg).addImm(Imm);
else {
- BuildMI(MBB, II).addImm(Imm);
+ BuildMI(MBB, DL, II).addImm(Imm);
bool InsertedCopy = TII.copyRegToReg(*MBB, MBB->end(), ResultReg,
II.ImplicitDefs[0], RC, RC);
if (!InsertedCopy)
return ResultReg;
}
-unsigned FastISel::FastEmitInst_extractsubreg(unsigned Op0, uint32_t Idx) {
+unsigned FastISel::FastEmitInst_extractsubreg(MVT::SimpleValueType RetVT,
+ unsigned Op0, uint32_t Idx) {
const TargetRegisterClass* RC = MRI.getRegClass(Op0);
- const TargetRegisterClass* SRC = *(RC->subregclasses_begin()+Idx-1);
- unsigned ResultReg = createResultReg(SRC);
+ unsigned ResultReg = createResultReg(TLI.getRegClassFor(RetVT));
const TargetInstrDesc &II = TII.get(TargetInstrInfo::EXTRACT_SUBREG);
if (II.getNumDefs() >= 1)
- BuildMI(MBB, II, ResultReg).addReg(Op0).addImm(Idx);
+ BuildMI(MBB, DL, II, ResultReg).addReg(Op0).addImm(Idx);
else {
- BuildMI(MBB, II).addReg(Op0).addImm(Idx);
+ BuildMI(MBB, DL, II).addReg(Op0).addImm(Idx);
bool InsertedCopy = TII.copyRegToReg(*MBB, MBB->end(), ResultReg,
II.ImplicitDefs[0], RC, RC);
if (!InsertedCopy)
}
return ResultReg;
}
+
+/// FastEmitZExtFromI1 - Emit MachineInstrs to compute the value of Op
+/// with all but the least significant bit set to zero.
+unsigned FastISel::FastEmitZExtFromI1(MVT::SimpleValueType VT, unsigned Op) {
+ return FastEmit_ri(VT, VT, ISD::AND, Op, 1);
+}
projects / oota-llvm.git / blobdiff