#define GET_REGINFO_TARGET_DESC
#include "X86GenRegisterInfo.inc"
-cl::opt<bool>
-ForceStackAlign("force-align-stack",
- cl::desc("Force align the stack to the minimum alignment"
- " needed for the function."),
- cl::init(false), cl::Hidden);
-
static cl::opt<bool>
EnableBasePointer("x86-use-base-pointer", cl::Hidden, cl::init(true),
cl::desc("Enable use of a base pointer for complex stack frames"));
if (Subtarget.isTarget64BitLP64())
return &X86::GR64_NOSPRegClass;
return &X86::GR32_NOSPRegClass;
- case 2: // Available for tailcall (not callee-saved GPRs).
- const Function *F = MF.getFunction();
- if (IsWin64 || (F && F->getCallingConv() == CallingConv::X86_64_Win64))
- return &X86::GR64_TCW64RegClass;
- else if (Is64Bit)
- return &X86::GR64_TCRegClass;
-
- bool hasHipeCC = (F ? F->getCallingConv() == CallingConv::HiPE : false);
- if (hasHipeCC)
- return &X86::GR32RegClass;
- return &X86::GR32_TCRegClass;
+ case 2: // NOREX GPRs.
+ if (Subtarget.isTarget64BitLP64())
+ return &X86::GR64_NOREXRegClass;
+ return &X86::GR32_NOREXRegClass;
+ case 3: // NOREX GPRs except the stack pointer (for encoding reasons).
+ if (Subtarget.isTarget64BitLP64())
+ return &X86::GR64_NOREX_NOSPRegClass;
+ return &X86::GR32_NOREX_NOSPRegClass;
+ case 4: // Available for tailcall (not callee-saved GPRs).
+ return getGPRsForTailCall(MF);
}
}
+const TargetRegisterClass *
+X86RegisterInfo::getGPRsForTailCall(const MachineFunction &MF) const {
+ const Function *F = MF.getFunction();
+ if (IsWin64 || (F && F->getCallingConv() == CallingConv::X86_64_Win64))
+ return &X86::GR64_TCW64RegClass;
+ else if (Is64Bit)
+ return &X86::GR64_TCRegClass;
+
+ bool hasHipeCC = (F ? F->getCallingConv() == CallingConv::HiPE : false);
+ if (hasHipeCC)
+ return &X86::GR32RegClass;
+ return &X86::GR32_TCRegClass;
+}
+
const TargetRegisterClass *
X86RegisterInfo::getCrossCopyRegClass(const TargetRegisterClass *RC) const {
if (RC == &X86::CCRRegClass) {
unsigned
X86RegisterInfo::getRegPressureLimit(const TargetRegisterClass *RC,
MachineFunction &MF) const {
- const TargetFrameLowering *TFI = MF.getSubtarget().getFrameLowering();
+ const X86FrameLowering *TFI = getFrameLowering(MF);
unsigned FPDiff = TFI->hasFP(MF) ? 1 : 0;
switch (RC->getID()) {
const MCPhysReg *
X86RegisterInfo::getCalleeSavedRegs(const MachineFunction *MF) const {
const X86Subtarget &Subtarget = MF->getSubtarget<X86Subtarget>();
+ bool HasSSE = Subtarget.hasSSE1();
bool HasAVX = Subtarget.hasAVX();
bool HasAVX512 = Subtarget.hasAVX512();
bool CallsEHReturn = MF->getMMI().callsEHReturn();
if (HasAVX)
return CSR_64_RT_AllRegs_AVX_SaveList;
return CSR_64_RT_AllRegs_SaveList;
+ case CallingConv::CXX_FAST_TLS:
+ if (Is64Bit)
+ return CSR_64_TLS_Darwin_SaveList;
+ break;
case CallingConv::Intel_OCL_BI: {
if (HasAVX512 && IsWin64)
return CSR_Win64_Intel_OCL_BI_AVX512_SaveList;
return CSR_64_Intel_OCL_BI_SaveList;
break;
}
+ case CallingConv::HHVM:
+ return CSR_64_HHVM_SaveList;
case CallingConv::Cold:
if (Is64Bit)
return CSR_64_MostRegs_SaveList;
if (CallsEHReturn)
return CSR_64EHRet_SaveList;
return CSR_64_SaveList;
+ case CallingConv::X86_INTR:
+ if (Is64Bit) {
+ if (HasAVX)
+ return CSR_64_AllRegs_AVX_SaveList;
+ else
+ return CSR_64_AllRegs_SaveList;
+ } else {
+ if (HasSSE)
+ return CSR_32_AllRegs_SSE_SaveList;
+ else
+ return CSR_32_AllRegs_SaveList;
+ }
default:
break;
}
X86RegisterInfo::getCallPreservedMask(const MachineFunction &MF,
CallingConv::ID CC) const {
const X86Subtarget &Subtarget = MF.getSubtarget<X86Subtarget>();
+ bool HasSSE = Subtarget.hasSSE1();
bool HasAVX = Subtarget.hasAVX();
bool HasAVX512 = Subtarget.hasAVX512();
if (HasAVX)
return CSR_64_RT_AllRegs_AVX_RegMask;
return CSR_64_RT_AllRegs_RegMask;
+ case CallingConv::CXX_FAST_TLS:
+ if (Is64Bit)
+ return CSR_64_TLS_Darwin_RegMask;
+ break;
case CallingConv::Intel_OCL_BI: {
if (HasAVX512 && IsWin64)
return CSR_Win64_Intel_OCL_BI_AVX512_RegMask;
return CSR_64_Intel_OCL_BI_RegMask;
break;
}
+ case CallingConv::HHVM:
+ return CSR_64_HHVM_RegMask;
case CallingConv::Cold:
if (Is64Bit)
return CSR_64_MostRegs_RegMask;
break;
- default:
- break;
case CallingConv::X86_64_Win64:
return CSR_Win64_RegMask;
case CallingConv::X86_64_SysV:
return CSR_64_RegMask;
+ case CallingConv::X86_INTR:
+ if (Is64Bit) {
+ if (HasAVX)
+ return CSR_64_AllRegs_AVX_RegMask;
+ else
+ return CSR_64_AllRegs_RegMask;
+ } else {
+ if (HasSSE)
+ return CSR_32_AllRegs_SSE_RegMask;
+ else
+ return CSR_32_AllRegs_RegMask;
+ }
+ default:
+ break;
}
// Unlike getCalleeSavedRegs(), we don't have MMI so we can't check
return CSR_NoRegs_RegMask;
}
+const uint32_t *X86RegisterInfo::getDarwinTLSCallPreservedMask() const {
+ return CSR_64_TLS_Darwin_RegMask;
+}
+
BitVector X86RegisterInfo::getReservedRegs(const MachineFunction &MF) const {
BitVector Reserved(getNumRegs());
- const TargetFrameLowering *TFI = MF.getSubtarget().getFrameLowering();
+ const X86FrameLowering *TFI = getFrameLowering(MF);
// Set the stack-pointer register and its aliases as reserved.
for (MCSubRegIterator I(X86::RSP, this, /*IncludeSelf=*/true); I.isValid();
// Stack Frame Processing methods
//===----------------------------------------------------------------------===//
+static bool CantUseSP(const MachineFrameInfo *MFI) {
+ return MFI->hasVarSizedObjects() || MFI->hasOpaqueSPAdjustment();
+}
+
bool X86RegisterInfo::hasBasePointer(const MachineFunction &MF) const {
const MachineFrameInfo *MFI = MF.getFrameInfo();
// reference locals while also adjusting the stack pointer. When we can't
// use both the SP and the FP, we need a separate base pointer register.
bool CantUseFP = needsStackRealignment(MF);
- bool CantUseSP =
- MFI->hasVarSizedObjects() || MFI->hasOpaqueSPAdjustment();
- return CantUseFP && CantUseSP;
+ return CantUseFP && CantUseSP(MFI);
}
bool X86RegisterInfo::canRealignStack(const MachineFunction &MF) const {
- if (MF.getFunction()->hasFnAttribute("no-realign-stack"))
+ if (!TargetRegisterInfo::canRealignStack(MF))
return false;
const MachineFrameInfo *MFI = MF.getFrameInfo();
// If a base pointer is necessary. Check that it isn't too late to reserve
// it.
- if (MFI->hasVarSizedObjects())
+ if (CantUseSP(MFI))
return MRI->canReserveReg(BasePtr);
return true;
}
-bool X86RegisterInfo::needsStackRealignment(const MachineFunction &MF) const {
- const MachineFrameInfo *MFI = MF.getFrameInfo();
- const Function *F = MF.getFunction();
- unsigned StackAlign =
- MF.getSubtarget().getFrameLowering()->getStackAlignment();
- bool requiresRealignment = ((MFI->getMaxAlignment() > StackAlign) ||
- F->hasFnAttribute(Attribute::StackAlignment));
-
- // If we've requested that we force align the stack do so now.
- if (ForceStackAlign)
- return canRealignStack(MF);
-
- return requiresRealignment && canRealignStack(MF);
-}
-
bool X86RegisterInfo::hasReservedSpillSlot(const MachineFunction &MF,
unsigned Reg, int &FrameIdx) const {
// Since X86 defines assignCalleeSavedSpillSlots which always return true
RegScavenger *RS) const {
MachineInstr &MI = *II;
MachineFunction &MF = *MI.getParent()->getParent();
- const TargetFrameLowering *TFI = MF.getSubtarget().getFrameLowering();
+ const X86FrameLowering *TFI = getFrameLowering(MF);
int FrameIndex = MI.getOperand(FIOperandNum).getIndex();
unsigned BasePtr;
unsigned Opc = MI.getOpcode();
bool AfterFPPop = Opc == X86::TAILJMPm64 || Opc == X86::TAILJMPm ||
Opc == X86::TCRETURNmi || Opc == X86::TCRETURNmi64;
+
if (hasBasePointer(MF))
BasePtr = (FrameIndex < 0 ? FramePtr : getBaseRegister());
else if (needsStackRealignment(MF))
// offset is from the traditional base pointer location. On 64-bit, the
// offset is from the SP at the end of the prologue, not the FP location. This
// matches the behavior of llvm.frameaddress.
+ unsigned IgnoredFrameReg;
if (Opc == TargetOpcode::LOCAL_ESCAPE) {
MachineOperand &FI = MI.getOperand(FIOperandNum);
- bool IsWinEH = MF.getTarget().getMCAsmInfo()->usesWindowsCFI();
int Offset;
- if (IsWinEH)
- Offset = static_cast<const X86FrameLowering *>(TFI)
- ->getFrameIndexOffsetFromSP(MF, FrameIndex);
- else
- Offset = TFI->getFrameIndexOffset(MF, FrameIndex);
+ Offset = TFI->getFrameIndexReference(MF, FrameIndex, IgnoredFrameReg);
FI.ChangeToImmediate(Offset);
return;
}
const MachineFrameInfo *MFI = MF.getFrameInfo();
FIOffset = MFI->getObjectOffset(FrameIndex) - TFI->getOffsetOfLocalArea();
} else
- FIOffset = TFI->getFrameIndexOffset(MF, FrameIndex);
+ FIOffset = TFI->getFrameIndexReference(MF, FrameIndex, IgnoredFrameReg);
if (BasePtr == StackPtr)
FIOffset += SPAdj;
}
unsigned X86RegisterInfo::getFrameRegister(const MachineFunction &MF) const {
- const TargetFrameLowering *TFI = MF.getSubtarget().getFrameLowering();
+ const X86FrameLowering *TFI = getFrameLowering(MF);
return TFI->hasFP(MF) ? FramePtr : StackPtr;
}
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