//===----------------------------------------------------------------------===//
#include "X86AsmPrinter.h"
+#include "X86RegisterInfo.h"
#include "InstPrinter/X86ATTInstPrinter.h"
-#include "X86COFFMachineModuleInfo.h"
+#include "MCTargetDesc/X86BaseInfo.h"
#include "llvm/ADT/SmallString.h"
+#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineModuleInfoImpls.h"
#include "llvm/CodeGen/StackMaps.h"
-#include "llvm/IR/Type.h"
+#include "llvm/IR/DataLayout.h"
+#include "llvm/IR/GlobalValue.h"
+#include "llvm/IR/Mangler.h"
#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/MC/MCCodeEmitter.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCInst.h"
#include "llvm/MC/MCInstBuilder.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSymbol.h"
-#include "llvm/Support/FormattedStream.h"
-#include "llvm/Target/Mangler.h"
+#include "llvm/Support/TargetRegistry.h"
using namespace llvm;
namespace {
} // end anonymous namespace
+// Emit a minimal sequence of nops spanning NumBytes bytes.
+static void EmitNops(MCStreamer &OS, unsigned NumBytes, bool Is64Bit,
+ const MCSubtargetInfo &STI);
+
+namespace llvm {
+ X86AsmPrinter::StackMapShadowTracker::StackMapShadowTracker(TargetMachine &TM)
+ : TM(TM), Count(false), RequiredShadowSize(0), CurrentShadowSize(0) {}
+
+ X86AsmPrinter::StackMapShadowTracker::~StackMapShadowTracker() {}
+
+ void
+ X86AsmPrinter::StackMapShadowTracker::startFunction(MachineFunction &MF) {
+ CodeEmitter.reset(TM.getTarget().createMCCodeEmitter(*TM.getInstrInfo(),
+ *TM.getRegisterInfo(),
+ *TM.getSubtargetImpl(),
+ MF.getContext()));
+ }
+
+ void X86AsmPrinter::StackMapShadowTracker::count(MCInst &Inst,
+ const MCSubtargetInfo &STI) {
+ if (Count) {
+ SmallString<256> Code;
+ SmallVector<MCFixup, 4> Fixups;
+ raw_svector_ostream VecOS(Code);
+ CodeEmitter->EncodeInstruction(Inst, VecOS, Fixups, STI);
+ VecOS.flush();
+ CurrentShadowSize += Code.size();
+ if (CurrentShadowSize >= RequiredShadowSize)
+ Count = false; // The shadow is big enough. Stop counting.
+ }
+ }
+
+ void X86AsmPrinter::StackMapShadowTracker::emitShadowPadding(
+ MCStreamer &OutStreamer, const MCSubtargetInfo &STI) {
+ if (Count && CurrentShadowSize < RequiredShadowSize)
+ EmitNops(OutStreamer, RequiredShadowSize - CurrentShadowSize,
+ TM.getSubtarget<X86Subtarget>().is64Bit(), STI);
+ Count = false;
+ }
+
+ void X86AsmPrinter::EmitAndCountInstruction(MCInst &Inst) {
+ OutStreamer.EmitInstruction(Inst, getSubtargetInfo());
+ SMShadowTracker.count(Inst, getSubtargetInfo());
+ }
+} // end llvm namespace
+
X86MCInstLower::X86MCInstLower(const MachineFunction &mf,
X86AsmPrinter &asmprinter)
: Ctx(mf.getContext()), MF(mf), TM(mf.getTarget()),
/// operand to an MCSymbol.
MCSymbol *X86MCInstLower::
GetSymbolFromOperand(const MachineOperand &MO) const {
+ const DataLayout *DL = TM.getDataLayout();
assert((MO.isGlobal() || MO.isSymbol() || MO.isMBB()) && "Isn't a symbol reference");
SmallString<128> Name;
+ StringRef Suffix;
+
+ switch (MO.getTargetFlags()) {
+ case X86II::MO_DLLIMPORT:
+ // Handle dllimport linkage.
+ Name += "__imp_";
+ break;
+ case X86II::MO_DARWIN_STUB:
+ Suffix = "$stub";
+ break;
+ case X86II::MO_DARWIN_NONLAZY:
+ case X86II::MO_DARWIN_NONLAZY_PIC_BASE:
+ case X86II::MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE:
+ Suffix = "$non_lazy_ptr";
+ break;
+ }
+
+ if (!Suffix.empty())
+ Name += DL->getPrivateGlobalPrefix();
+
+ unsigned PrefixLen = Name.size();
if (MO.isGlobal()) {
const GlobalValue *GV = MO.getGlobal();
- bool isImplicitlyPrivate = false;
- if (MO.getTargetFlags() == X86II::MO_DARWIN_STUB ||
- MO.getTargetFlags() == X86II::MO_DARWIN_NONLAZY ||
- MO.getTargetFlags() == X86II::MO_DARWIN_NONLAZY_PIC_BASE ||
- MO.getTargetFlags() == X86II::MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE)
- isImplicitlyPrivate = true;
-
- getMang()->getNameWithPrefix(Name, GV, isImplicitlyPrivate);
+ AsmPrinter.getNameWithPrefix(Name, GV);
} else if (MO.isSymbol()) {
- Name += MAI.getGlobalPrefix();
- Name += MO.getSymbolName();
+ getMang()->getNameWithPrefix(Name, MO.getSymbolName());
} else if (MO.isMBB()) {
Name += MO.getMBB()->getSymbol()->getName();
}
+ unsigned OrigLen = Name.size() - PrefixLen;
+
+ Name += Suffix;
+ MCSymbol *Sym = Ctx.GetOrCreateSymbol(Name);
+
+ StringRef OrigName = StringRef(Name).substr(PrefixLen, OrigLen);
// If the target flags on the operand changes the name of the symbol, do that
// before we return the symbol.
switch (MO.getTargetFlags()) {
default: break;
- case X86II::MO_DLLIMPORT: {
- // Handle dllimport linkage.
- const char *Prefix = "__imp_";
- Name.insert(Name.begin(), Prefix, Prefix+strlen(Prefix));
- break;
- }
case X86II::MO_DARWIN_NONLAZY:
case X86II::MO_DARWIN_NONLAZY_PIC_BASE: {
- Name += "$non_lazy_ptr";
- MCSymbol *Sym = Ctx.GetOrCreateSymbol(Name.str());
-
MachineModuleInfoImpl::StubValueTy &StubSym =
getMachOMMI().getGVStubEntry(Sym);
- if (StubSym.getPointer() == 0) {
+ if (!StubSym.getPointer()) {
assert(MO.isGlobal() && "Extern symbol not handled yet");
StubSym =
MachineModuleInfoImpl::
StubValueTy(AsmPrinter.getSymbol(MO.getGlobal()),
!MO.getGlobal()->hasInternalLinkage());
}
- return Sym;
+ break;
}
case X86II::MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE: {
- Name += "$non_lazy_ptr";
- MCSymbol *Sym = Ctx.GetOrCreateSymbol(Name.str());
MachineModuleInfoImpl::StubValueTy &StubSym =
getMachOMMI().getHiddenGVStubEntry(Sym);
- if (StubSym.getPointer() == 0) {
+ if (!StubSym.getPointer()) {
assert(MO.isGlobal() && "Extern symbol not handled yet");
StubSym =
MachineModuleInfoImpl::
StubValueTy(AsmPrinter.getSymbol(MO.getGlobal()),
!MO.getGlobal()->hasInternalLinkage());
}
- return Sym;
+ break;
}
case X86II::MO_DARWIN_STUB: {
- Name += "$stub";
- MCSymbol *Sym = Ctx.GetOrCreateSymbol(Name.str());
MachineModuleInfoImpl::StubValueTy &StubSym =
getMachOMMI().getFnStubEntry(Sym);
if (StubSym.getPointer())
StubValueTy(AsmPrinter.getSymbol(MO.getGlobal()),
!MO.getGlobal()->hasInternalLinkage());
} else {
- Name.erase(Name.end()-5, Name.end());
StubSym =
MachineModuleInfoImpl::
- StubValueTy(Ctx.GetOrCreateSymbol(Name.str()), false);
+ StubValueTy(Ctx.GetOrCreateSymbol(OrigName), false);
}
- return Sym;
+ break;
}
}
- return Ctx.GetOrCreateSymbol(Name.str());
+ return Sym;
}
MCOperand X86MCInstLower::LowerSymbolOperand(const MachineOperand &MO,
MCSymbol *Sym) const {
// FIXME: We would like an efficient form for this, so we don't have to do a
// lot of extra uniquing.
- const MCExpr *Expr = 0;
+ const MCExpr *Expr = nullptr;
MCSymbolRefExpr::VariantKind RefKind = MCSymbolRefExpr::VK_None;
switch (MO.getTargetFlags()) {
break;
}
- if (Expr == 0)
+ if (!Expr)
Expr = MCSymbolRefExpr::Create(Sym, RefKind, Ctx);
if (!MO.isJTI() && !MO.isMBB() && MO.getOffset())
}
-/// LowerUnaryToTwoAddr - R = setb -> R = sbb R, R
-static void LowerUnaryToTwoAddr(MCInst &OutMI, unsigned NewOpc) {
- OutMI.setOpcode(NewOpc);
- OutMI.addOperand(OutMI.getOperand(0));
- OutMI.addOperand(OutMI.getOperand(0));
-}
-
/// \brief Simplify FOO $imm, %{al,ax,eax,rax} to FOO $imm, for instruction with
/// a short fixed-register form.
static void SimplifyShortImmForm(MCInst &Inst, unsigned Opcode) {
unsigned RegOp = IsStore ? 0 : 5;
unsigned AddrOp = AddrBase + 3;
assert(Inst.getNumOperands() == 6 && Inst.getOperand(RegOp).isReg() &&
- Inst.getOperand(AddrBase + 0).isReg() && // base
- Inst.getOperand(AddrBase + 1).isImm() && // scale
- Inst.getOperand(AddrBase + 2).isReg() && // index register
- (Inst.getOperand(AddrOp).isExpr() || // address
- Inst.getOperand(AddrOp).isImm())&&
- Inst.getOperand(AddrBase + 4).isReg() && // segment
+ Inst.getOperand(AddrBase + X86::AddrBaseReg).isReg() &&
+ Inst.getOperand(AddrBase + X86::AddrScaleAmt).isImm() &&
+ Inst.getOperand(AddrBase + X86::AddrIndexReg).isReg() &&
+ Inst.getOperand(AddrBase + X86::AddrSegmentReg).isReg() &&
+ (Inst.getOperand(AddrOp).isExpr() ||
+ Inst.getOperand(AddrOp).isImm()) &&
"Unexpected instruction!");
// Check whether the destination register can be fixed.
}
if (Absolute &&
- (Inst.getOperand(AddrBase + 0).getReg() != 0 ||
- Inst.getOperand(AddrBase + 2).getReg() != 0 ||
- Inst.getOperand(AddrBase + 4).getReg() != 0 ||
- Inst.getOperand(AddrBase + 1).getImm() != 1))
+ (Inst.getOperand(AddrBase + X86::AddrBaseReg).getReg() != 0 ||
+ Inst.getOperand(AddrBase + X86::AddrScaleAmt).getImm() != 1 ||
+ Inst.getOperand(AddrBase + X86::AddrIndexReg).getReg() != 0))
return;
// If so, rewrite the instruction.
MCOperand Saved = Inst.getOperand(AddrOp);
+ MCOperand Seg = Inst.getOperand(AddrBase + X86::AddrSegmentReg);
Inst = MCInst();
Inst.setOpcode(Opcode);
Inst.addOperand(Saved);
+ Inst.addOperand(Seg);
+}
+
+static unsigned getRetOpcode(const X86Subtarget &Subtarget)
+{
+ return Subtarget.is64Bit() ? X86::RETQ : X86::RETL;
}
void X86MCInstLower::Lower(const MachineInstr *MI, MCInst &OutMI) const {
assert(OutMI.getOperand(1+X86::AddrSegmentReg).getReg() == 0 &&
"LEA has segment specified!");
break;
- case X86::MOV32r0: LowerUnaryToTwoAddr(OutMI, X86::XOR32rr); break;
case X86::MOV32ri64:
OutMI.setOpcode(X86::MOV32ri);
case X86::EH_RETURN:
case X86::EH_RETURN64: {
OutMI = MCInst();
- OutMI.setOpcode(X86::RET);
+ OutMI.setOpcode(getRetOpcode(AsmPrinter.getSubtarget()));
break;
}
}
}
-static void LowerTlsAddr(MCStreamer &OutStreamer,
- X86MCInstLower &MCInstLowering,
- const MachineInstr &MI) {
+void X86AsmPrinter::LowerTlsAddr(X86MCInstLower &MCInstLowering,
+ const MachineInstr &MI) {
bool is64Bits = MI.getOpcode() == X86::TLS_addr64 ||
MI.getOpcode() == X86::TLS_base_addr64;
MCContext &context = OutStreamer.getContext();
if (needsPadding)
- OutStreamer.EmitInstruction(MCInstBuilder(X86::DATA16_PREFIX));
+ EmitAndCountInstruction(MCInstBuilder(X86::DATA16_PREFIX));
MCSymbolRefExpr::VariantKind SRVK;
switch (MI.getOpcode()) {
LEA.addOperand(MCOperand::CreateExpr(symRef)); // disp
LEA.addOperand(MCOperand::CreateReg(0)); // seg
}
- OutStreamer.EmitInstruction(LEA);
+ EmitAndCountInstruction(LEA);
if (needsPadding) {
- OutStreamer.EmitInstruction(MCInstBuilder(X86::DATA16_PREFIX));
- OutStreamer.EmitInstruction(MCInstBuilder(X86::DATA16_PREFIX));
- OutStreamer.EmitInstruction(MCInstBuilder(X86::REX64_PREFIX));
+ EmitAndCountInstruction(MCInstBuilder(X86::DATA16_PREFIX));
+ EmitAndCountInstruction(MCInstBuilder(X86::DATA16_PREFIX));
+ EmitAndCountInstruction(MCInstBuilder(X86::REX64_PREFIX));
}
StringRef name = is64Bits ? "__tls_get_addr" : "___tls_get_addr";
MCSymbolRefExpr::VK_PLT,
context);
- OutStreamer.EmitInstruction(MCInstBuilder(is64Bits ? X86::CALL64pcrel32
- : X86::CALLpcrel32)
- .addExpr(tlsRef));
+ EmitAndCountInstruction(MCInstBuilder(is64Bits ? X86::CALL64pcrel32
+ : X86::CALLpcrel32)
+ .addExpr(tlsRef));
}
-static std::pair<StackMaps::Location, MachineInstr::const_mop_iterator>
-parseMemoryOperand(StackMaps::Location::LocationType LocTy,
- MachineInstr::const_mop_iterator MOI,
- MachineInstr::const_mop_iterator MOE) {
-
- typedef StackMaps::Location Location;
-
- assert(std::distance(MOI, MOE) >= 5 && "Too few operands to encode mem op.");
-
- const MachineOperand &Base = *MOI;
- const MachineOperand &Scale = *(++MOI);
- const MachineOperand &Index = *(++MOI);
- const MachineOperand &Disp = *(++MOI);
- const MachineOperand &ZeroReg = *(++MOI);
-
- // Sanity check for supported operand format.
- assert(Base.isReg() &&
- Scale.isImm() && Scale.getImm() == 1 &&
- Index.isReg() && Index.getReg() == 0 &&
- Disp.isImm() && ZeroReg.isReg() && (ZeroReg.getReg() == 0) &&
- "Unsupported x86 memory operand sequence.");
- (void)Scale;
- (void)Index;
- (void)ZeroReg;
-
- return std::make_pair(
- Location(LocTy, Base.getReg(), Disp.getImm()), ++MOI);
-}
-
-std::pair<StackMaps::Location, MachineInstr::const_mop_iterator>
-X86AsmPrinter::stackmapOperandParser(MachineInstr::const_mop_iterator MOI,
- MachineInstr::const_mop_iterator MOE) {
-
- typedef StackMaps::Location Location;
-
- const MachineOperand &MOP = *MOI;
- assert(!MOP.isRegMask() && (!MOP.isReg() || !MOP.isImplicit()) &&
- "Register mask and implicit operands should not be processed.");
-
- if (MOP.isImm()) {
- switch (MOP.getImm()) {
- default: llvm_unreachable("Unrecognized operand type.");
- case StackMaps::DirectMemRefOp:
- return parseMemoryOperand(StackMaps::Location::Direct,
- llvm::next(MOI), MOE);
- case StackMaps::IndirectMemRefOp:
- return parseMemoryOperand(StackMaps::Location::Indirect,
- llvm::next(MOI), MOE);
- case StackMaps::ConstantOp: {
- ++MOI;
- assert(MOI->isImm() && "Expected constant operand.");
- int64_t Imm = MOI->getImm();
- return std::make_pair(Location(Location::Constant, 0, Imm), ++MOI);
+/// \brief Emit the optimal amount of multi-byte nops on X86.
+static void EmitNops(MCStreamer &OS, unsigned NumBytes, bool Is64Bit, const MCSubtargetInfo &STI) {
+ // This works only for 64bit. For 32bit we have to do additional checking if
+ // the CPU supports multi-byte nops.
+ assert(Is64Bit && "EmitNops only supports X86-64");
+ while (NumBytes) {
+ unsigned Opc, BaseReg, ScaleVal, IndexReg, Displacement, SegmentReg;
+ Opc = IndexReg = Displacement = SegmentReg = 0;
+ BaseReg = X86::RAX; ScaleVal = 1;
+ switch (NumBytes) {
+ case 0: llvm_unreachable("Zero nops?"); break;
+ case 1: NumBytes -= 1; Opc = X86::NOOP; break;
+ case 2: NumBytes -= 2; Opc = X86::XCHG16ar; break;
+ case 3: NumBytes -= 3; Opc = X86::NOOPL; break;
+ case 4: NumBytes -= 4; Opc = X86::NOOPL; Displacement = 8; break;
+ case 5: NumBytes -= 5; Opc = X86::NOOPL; Displacement = 8;
+ IndexReg = X86::RAX; break;
+ case 6: NumBytes -= 6; Opc = X86::NOOPW; Displacement = 8;
+ IndexReg = X86::RAX; break;
+ case 7: NumBytes -= 7; Opc = X86::NOOPL; Displacement = 512; break;
+ case 8: NumBytes -= 8; Opc = X86::NOOPL; Displacement = 512;
+ IndexReg = X86::RAX; break;
+ case 9: NumBytes -= 9; Opc = X86::NOOPW; Displacement = 512;
+ IndexReg = X86::RAX; break;
+ default: NumBytes -= 10; Opc = X86::NOOPW; Displacement = 512;
+ IndexReg = X86::RAX; SegmentReg = X86::CS; break;
}
- }
- }
- // Otherwise this is a reg operand.
- assert(MOP.isReg() && "Expected register operand here.");
- assert(TargetRegisterInfo::isPhysicalRegister(MOP.getReg()) &&
- "Virtreg operands should have been rewritten before now.");
- return std::make_pair(Location(Location::Register, MOP.getReg(), 0), ++MOI);
-}
+ unsigned NumPrefixes = std::min(NumBytes, 5U);
+ NumBytes -= NumPrefixes;
+ for (unsigned i = 0; i != NumPrefixes; ++i)
+ OS.EmitBytes("\x66");
-static MachineInstr::const_mop_iterator
-getStackMapEndMOP(MachineInstr::const_mop_iterator MOI,
- MachineInstr::const_mop_iterator MOE) {
- for (; MOI != MOE; ++MOI)
- if (MOI->isRegMask() || (MOI->isReg() && MOI->isImplicit()))
+ switch (Opc) {
+ default: llvm_unreachable("Unexpected opcode"); break;
+ case X86::NOOP:
+ OS.EmitInstruction(MCInstBuilder(Opc), STI);
break;
-
- return MOI;
+ case X86::XCHG16ar:
+ OS.EmitInstruction(MCInstBuilder(Opc).addReg(X86::AX), STI);
+ break;
+ case X86::NOOPL:
+ case X86::NOOPW:
+ OS.EmitInstruction(MCInstBuilder(Opc).addReg(BaseReg)
+ .addImm(ScaleVal).addReg(IndexReg)
+ .addImm(Displacement).addReg(SegmentReg), STI);
+ break;
+ }
+ } // while (NumBytes)
}
-static void LowerSTACKMAP(MCStreamer &OutStreamer,
- X86MCInstLower &MCInstLowering,
- StackMaps &SM,
- const MachineInstr &MI)
-{
- int64_t ID = MI.getOperand(0).getImm();
- unsigned NumNOPBytes = MI.getOperand(1).getImm();
-
- assert((int32_t)ID == ID && "Stack maps hold 32-bit IDs");
- SM.recordStackMap(MI, ID, llvm::next(MI.operands_begin(), 2),
- getStackMapEndMOP(MI.operands_begin(), MI.operands_end()));
- // Emit padding.
- for (unsigned i = 0; i < NumNOPBytes; ++i)
- OutStreamer.EmitInstruction(MCInstBuilder(X86::NOOP));
+// Lower a stackmap of the form:
+// <id>, <shadowBytes>, ...
+void X86AsmPrinter::LowerSTACKMAP(const MachineInstr &MI) {
+ SMShadowTracker.emitShadowPadding(OutStreamer, getSubtargetInfo());
+ SM.recordStackMap(MI);
+ unsigned NumShadowBytes = MI.getOperand(1).getImm();
+ SMShadowTracker.reset(NumShadowBytes);
}
// Lower a patchpoint of the form:
-// [<def>], <id>, <numBytes>, <target>, <numArgs>
-static void LowerPATCHPOINT(MCStreamer &OutStreamer,
- X86MCInstLower &MCInstLowering,
- StackMaps &SM,
- const MachineInstr &MI) {
- bool hasDef = MI.getOperand(0).isReg() && MI.getOperand(0).isDef() &&
- !MI.getOperand(0).isImplicit();
- unsigned StartIdx = hasDef ? 1 : 0;
-#ifndef NDEBUG
- {
- unsigned StartIdx2 = 0, e = MI.getNumOperands();
- while (StartIdx2 < e && MI.getOperand(StartIdx2).isReg() &&
- MI.getOperand(StartIdx2).isDef() &&
- !MI.getOperand(StartIdx2).isImplicit())
- ++StartIdx2;
-
- assert(StartIdx == StartIdx2 &&
- "Unexpected additonal definition in Patchpoint intrinsic.");
- }
-#endif
-
- // Find the first scratch register (implicit def and early clobber)
- unsigned ScratchIdx = StartIdx, e = MI.getNumOperands();
- while (ScratchIdx < e &&
- !(MI.getOperand(ScratchIdx).isReg() &&
- MI.getOperand(ScratchIdx).isDef() &&
- MI.getOperand(ScratchIdx).isImplicit() &&
- MI.getOperand(ScratchIdx).isEarlyClobber()))
- ++ScratchIdx;
-
- assert(ScratchIdx != e && "No scratch register available");
-
- int64_t ID = MI.getOperand(StartIdx).getImm();
- assert((int32_t)ID == ID && "Stack maps hold 32-bit IDs");
-
- // Get the number of arguments participating in the call. This number was
- // adjusted during call lowering by subtracting stack args.
- bool isAnyRegCC = MI.getOperand(StartIdx + 4).getImm() == CallingConv::AnyReg;
- assert(((hasDef && isAnyRegCC) || !hasDef) &&
- "Only Patchpoints with AnyReg calling convention may have a result");
- int64_t StackMapIdx = isAnyRegCC ? StartIdx + 5 :
- StartIdx + 5 + MI.getOperand(StartIdx + 3).getImm();
- assert(StackMapIdx <= MI.getNumOperands() &&
- "Patchpoint intrinsic dropped arguments.");
-
- SM.recordStackMap(MI, ID, llvm::next(MI.operands_begin(), StackMapIdx),
- getStackMapEndMOP(MI.operands_begin(), MI.operands_end()),
- isAnyRegCC && hasDef);
+// [<def>], <id>, <numBytes>, <target>, <numArgs>, <cc>, ...
+void X86AsmPrinter::LowerPATCHPOINT(const MachineInstr &MI) {
+ assert(Subtarget->is64Bit() && "Patchpoint currently only supports X86-64");
+ SMShadowTracker.emitShadowPadding(OutStreamer, getSubtargetInfo());
+
+ SM.recordPatchPoint(MI);
+
+ PatchPointOpers opers(&MI);
+ unsigned ScratchIdx = opers.getNextScratchIdx();
unsigned EncodedBytes = 0;
- int64_t CallTarget = MI.getOperand(StartIdx + 2).getImm();
+ int64_t CallTarget = opers.getMetaOper(PatchPointOpers::TargetPos).getImm();
if (CallTarget) {
// Emit MOV to materialize the target address and the CALL to target.
// This is encoded with 12-13 bytes, depending on which register is used.
- // We conservatively assume that it is 12 bytes and emit in worst case one
- // extra NOP byte.
- EncodedBytes = 12;
- OutStreamer.EmitInstruction(MCInstBuilder(X86::MOV64ri)
- .addReg(MI.getOperand(ScratchIdx).getReg())
- .addImm(CallTarget));
- OutStreamer.EmitInstruction(MCInstBuilder(X86::CALL64r)
- .addReg(MI.getOperand(ScratchIdx).getReg()));
+ unsigned ScratchReg = MI.getOperand(ScratchIdx).getReg();
+ if (X86II::isX86_64ExtendedReg(ScratchReg))
+ EncodedBytes = 13;
+ else
+ EncodedBytes = 12;
+ EmitAndCountInstruction(MCInstBuilder(X86::MOV64ri).addReg(ScratchReg)
+ .addImm(CallTarget));
+ EmitAndCountInstruction(MCInstBuilder(X86::CALL64r).addReg(ScratchReg));
}
// Emit padding.
- unsigned NumNOPBytes = MI.getOperand(StartIdx + 1).getImm();
- assert(NumNOPBytes >= EncodedBytes &&
+ unsigned NumBytes = opers.getMetaOper(PatchPointOpers::NBytesPos).getImm();
+ assert(NumBytes >= EncodedBytes &&
"Patchpoint can't request size less than the length of a call.");
- for (unsigned i = EncodedBytes; i < NumNOPBytes; ++i)
- OutStreamer.EmitInstruction(MCInstBuilder(X86::NOOP));
+ EmitNops(OutStreamer, NumBytes - EncodedBytes, Subtarget->is64Bit(),
+ getSubtargetInfo());
}
void X86AsmPrinter::EmitInstruction(const MachineInstr *MI) {
X86MCInstLower MCInstLowering(*MF, *this);
+ const X86RegisterInfo *RI =
+ static_cast<const X86RegisterInfo *>(TM.getRegisterInfo());
+
switch (MI->getOpcode()) {
case TargetOpcode::DBG_VALUE:
llvm_unreachable("Should be handled target independently");
// Emit nothing here but a comment if we can.
case X86::Int_MemBarrier:
- if (OutStreamer.hasRawTextSupport())
- OutStreamer.EmitRawText(StringRef("\t#MEMBARRIER"));
+ OutStreamer.emitRawComment("MEMBARRIER");
return;
case X86::TLS_addr64:
case X86::TLS_base_addr32:
case X86::TLS_base_addr64:
- return LowerTlsAddr(OutStreamer, MCInstLowering, *MI);
+ return LowerTlsAddr(MCInstLowering, *MI);
case X86::MOVPC32r: {
// This is a pseudo op for a two instruction sequence with a label, which
MCSymbol *PICBase = MF->getPICBaseSymbol();
// FIXME: We would like an efficient form for this, so we don't have to do a
// lot of extra uniquing.
- OutStreamer.EmitInstruction(MCInstBuilder(X86::CALLpcrel32)
+ EmitAndCountInstruction(MCInstBuilder(X86::CALLpcrel32)
.addExpr(MCSymbolRefExpr::Create(PICBase, OutContext)));
// Emit the label.
OutStreamer.EmitLabel(PICBase);
// popl $reg
- OutStreamer.EmitInstruction(MCInstBuilder(X86::POP32r)
- .addReg(MI->getOperand(0).getReg()));
+ EmitAndCountInstruction(MCInstBuilder(X86::POP32r)
+ .addReg(MI->getOperand(0).getReg()));
return;
}
DotExpr = MCBinaryExpr::CreateAdd(MCSymbolRefExpr::Create(OpSym,OutContext),
DotExpr, OutContext);
- OutStreamer.EmitInstruction(MCInstBuilder(X86::ADD32ri)
+ EmitAndCountInstruction(MCInstBuilder(X86::ADD32ri)
.addReg(MI->getOperand(0).getReg())
.addReg(MI->getOperand(1).getReg())
.addExpr(DotExpr));
}
case TargetOpcode::STACKMAP:
- return LowerSTACKMAP(OutStreamer, MCInstLowering, SM, *MI);
+ return LowerSTACKMAP(*MI);
case TargetOpcode::PATCHPOINT:
- return LowerPATCHPOINT(OutStreamer, MCInstLowering, SM, *MI);
+ return LowerPATCHPOINT(*MI);
case X86::MORESTACK_RET:
- OutStreamer.EmitInstruction(MCInstBuilder(X86::RET));
+ EmitAndCountInstruction(MCInstBuilder(getRetOpcode(*Subtarget)));
return;
case X86::MORESTACK_RET_RESTORE_R10:
// Return, then restore R10.
- OutStreamer.EmitInstruction(MCInstBuilder(X86::RET));
- OutStreamer.EmitInstruction(MCInstBuilder(X86::MOV64rr)
- .addReg(X86::R10)
- .addReg(X86::RAX));
+ EmitAndCountInstruction(MCInstBuilder(getRetOpcode(*Subtarget)));
+ EmitAndCountInstruction(MCInstBuilder(X86::MOV64rr)
+ .addReg(X86::R10)
+ .addReg(X86::RAX));
+ return;
+
+ case X86::SEH_PushReg:
+ OutStreamer.EmitWinCFIPushReg(RI->getSEHRegNum(MI->getOperand(0).getImm()));
+ return;
+
+ case X86::SEH_SaveReg:
+ OutStreamer.EmitWinCFISaveReg(RI->getSEHRegNum(MI->getOperand(0).getImm()),
+ MI->getOperand(1).getImm());
+ return;
+
+ case X86::SEH_SaveXMM:
+ OutStreamer.EmitWinCFISaveXMM(RI->getSEHRegNum(MI->getOperand(0).getImm()),
+ MI->getOperand(1).getImm());
+ return;
+
+ case X86::SEH_StackAlloc:
+ OutStreamer.EmitWinCFIAllocStack(MI->getOperand(0).getImm());
+ return;
+
+ case X86::SEH_SetFrame:
+ OutStreamer.EmitWinCFISetFrame(RI->getSEHRegNum(MI->getOperand(0).getImm()),
+ MI->getOperand(1).getImm());
+ return;
+
+ case X86::SEH_PushFrame:
+ OutStreamer.EmitWinCFIPushFrame(MI->getOperand(0).getImm());
+ return;
+
+ case X86::SEH_EndPrologue:
+ OutStreamer.EmitWinCFIEndProlog();
return;
}
MCInst TmpInst;
MCInstLowering.Lower(MI, TmpInst);
- OutStreamer.EmitInstruction(TmpInst);
+ EmitAndCountInstruction(TmpInst);
}
projects / oota-llvm.git / blobdiff