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Missed part of recommit.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48224 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Christopher Lamb 2008-03-11 10:27:36 +00:00
parent 1fab4a6bbb
commit 1bc1008b38
1 changed files with 7 additions and 4 deletions
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11
lib/Target/X86/X86InstrInfo.cpp
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@ -904,15 +904,18 @@ X86InstrInfo::convertToThreeAddress(MachineFunction::iterator &MFI,
unsigned leaInReg = RegInfo.createVirtualRegister(&X86::GR32RegClass);
unsigned leaOutReg = RegInfo.createVirtualRegister(&X86::GR32RegClass);
MachineInstr *Ins =
BuildMI(get(X86::INSERT_SUBREG), leaInReg).addReg(Src).addImm(2);
Ins->copyKillDeadInfo(MI);
// Build and insert into an implicit UNDEF value. This is OK because
// well be shifting and then extracting the lower 16-bits.
MachineInstr *Ins =
BuildMI(get(X86::INSERT_SUBREG),leaInReg).addImm(X86::IMPL_VAL_UNDEF)
.addReg(Src).addImm(X86::SUBREG_16BIT);
NewMI = BuildMI(get(Opc), leaOutReg)
.addReg(0).addImm(1 << ShAmt).addReg(leaInReg).addImm(0);
MachineInstr *Ext =
BuildMI(get(X86::EXTRACT_SUBREG), Dest).addReg(leaOutReg).addImm(2);
BuildMI(get(X86::EXTRACT_SUBREG), Dest)
.addReg(leaOutReg).addImm(X86::SUBREG_16BIT);
Ext->copyKillDeadInfo(MI);
MFI->insert(MBBI, Ins); // Insert the insert_subreg