diff options
Diffstat (limited to 'lib/Target/X86/X86InstrInfo.cpp')
| -rw-r--r-- | lib/Target/X86/X86InstrInfo.cpp | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/lib/Target/X86/X86InstrInfo.cpp b/lib/Target/X86/X86InstrInfo.cpp index 1672b3855b798..5f0aab9ddc68b 100644 --- a/lib/Target/X86/X86InstrInfo.cpp +++ b/lib/Target/X86/X86InstrInfo.cpp @@ -2661,7 +2661,8 @@ inline static bool isTruncatedShiftCountForLEA(unsigned ShAmt) { bool X86InstrInfo::classifyLEAReg(MachineInstr &MI, const MachineOperand &Src, unsigned Opc, bool AllowSP, unsigned &NewSrc, bool &isKill, bool &isUndef, - MachineOperand &ImplicitOp) const { + MachineOperand &ImplicitOp, + LiveVariables *LV) const { MachineFunction &MF = *MI.getParent()->getParent(); const TargetRegisterClass *RC; if (AllowSP) { @@ -2715,13 +2716,17 @@ bool X86InstrInfo::classifyLEAReg(MachineInstr &MI, const MachineOperand &Src, // Virtual register of the wrong class, we have to create a temporary 64-bit // vreg to feed into the LEA. NewSrc = MF.getRegInfo().createVirtualRegister(RC); - BuildMI(*MI.getParent(), MI, MI.getDebugLoc(), get(TargetOpcode::COPY)) + MachineInstr *Copy = BuildMI(*MI.getParent(), MI, MI.getDebugLoc(), + get(TargetOpcode::COPY)) .addReg(NewSrc, RegState::Define | RegState::Undef, X86::sub_32bit) .addOperand(Src); // Which is obviously going to be dead after we're done with it. isKill = true; isUndef = false; + + if (LV) + LV->replaceKillInstruction(SrcReg, MI, *Copy); } // We've set all the parameters without issue. @@ -2900,7 +2905,7 @@ X86InstrInfo::convertToThreeAddress(MachineFunction::iterator &MFI, unsigned SrcReg; MachineOperand ImplicitOp = MachineOperand::CreateReg(0, false); if (!classifyLEAReg(MI, Src, Opc, /*AllowSP=*/ false, - SrcReg, isKill, isUndef, ImplicitOp)) + SrcReg, isKill, isUndef, ImplicitOp, LV)) return nullptr; MachineInstrBuilder MIB = @@ -2943,7 +2948,7 @@ X86InstrInfo::convertToThreeAddress(MachineFunction::iterator &MFI, unsigned SrcReg; MachineOperand ImplicitOp = MachineOperand::CreateReg(0, false); if (!classifyLEAReg(MI, Src, Opc, /*AllowSP=*/ false, - SrcReg, isKill, isUndef, ImplicitOp)) + SrcReg, isKill, isUndef, ImplicitOp, LV)) return nullptr; MachineInstrBuilder MIB = @@ -2977,7 +2982,7 @@ X86InstrInfo::convertToThreeAddress(MachineFunction::iterator &MFI, unsigned SrcReg; MachineOperand ImplicitOp = MachineOperand::CreateReg(0, false); if (!classifyLEAReg(MI, Src, Opc, /*AllowSP=*/ false, - SrcReg, isKill, isUndef, ImplicitOp)) + SrcReg, isKill, isUndef, ImplicitOp, LV)) return nullptr; MachineInstrBuilder MIB = BuildMI(MF, MI.getDebugLoc(), get(Opc)) @@ -3016,7 +3021,7 @@ X86InstrInfo::convertToThreeAddress(MachineFunction::iterator &MFI, unsigned SrcReg; MachineOperand ImplicitOp = MachineOperand::CreateReg(0, false); if (!classifyLEAReg(MI, Src, Opc, /*AllowSP=*/ true, - SrcReg, isKill, isUndef, ImplicitOp)) + SrcReg, isKill, isUndef, ImplicitOp, LV)) return nullptr; const MachineOperand &Src2 = MI.getOperand(2); @@ -3024,7 +3029,7 @@ X86InstrInfo::convertToThreeAddress(MachineFunction::iterator &MFI, unsigned SrcReg2; MachineOperand ImplicitOp2 = MachineOperand::CreateReg(0, false); if (!classifyLEAReg(MI, Src2, Opc, /*AllowSP=*/ false, - SrcReg2, isKill2, isUndef2, ImplicitOp2)) + SrcReg2, isKill2, isUndef2, ImplicitOp2, LV)) return nullptr; MachineInstrBuilder MIB = @@ -3087,7 +3092,7 @@ X86InstrInfo::convertToThreeAddress(MachineFunction::iterator &MFI, unsigned SrcReg; MachineOperand ImplicitOp = MachineOperand::CreateReg(0, false); if (!classifyLEAReg(MI, Src, Opc, /*AllowSP=*/ true, - SrcReg, isKill, isUndef, ImplicitOp)) + SrcReg, isKill, isUndef, ImplicitOp, LV)) return nullptr; MachineInstrBuilder MIB = BuildMI(MF, MI.getDebugLoc(), get(Opc)) |