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| author | Christopher Lamb <christopher.lamb@gmail.com> | 2008-03-11 10:27:36 +0000 |
|---|---|---|
| committer | Christopher Lamb <christopher.lamb@gmail.com> | 2008-03-11 10:27:36 +0000 |
| commit | 342e4104d3b143850b6c08dbd857ef32f526fbf5 (patch) | |
| tree | ad8341f191192609fc34d5e31e7b23e5a1bd8335 /llvm/lib | |
| parent | aa7c2105de86c58e388ed4b221a860d667d7719e (diff) | |
| download | bcm5719-llvm-342e4104d3b143850b6c08dbd857ef32f526fbf5.tar.gz bcm5719-llvm-342e4104d3b143850b6c08dbd857ef32f526fbf5.zip | |
Missed part of recommit.
llvm-svn: 48224
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Target/X86/X86InstrInfo.cpp | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/llvm/lib/Target/X86/X86InstrInfo.cpp b/llvm/lib/Target/X86/X86InstrInfo.cpp index 762a7bc6653..20dd263d1ff 100644 --- a/llvm/lib/Target/X86/X86InstrInfo.cpp +++ b/llvm/lib/Target/X86/X86InstrInfo.cpp @@ -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 |
