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- Change TargetInstrInfo::reMaterialize to pass in TargetRegisterInfo.

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- If destination is a physical register and it has a subreg index, use the
  sub-register instead.
This fixes PR5423.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88745 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2009-11-14 02:55:43 +00:00
parent 4ec01b268e
commit d57cdd5683
13 changed files with 40 additions and 20 deletions
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2
lib/CodeGen/TwoAddressInstructionPass.cpp
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@ -1033,7 +1033,7 @@ bool TwoAddressInstructionPass::runOnMachineFunction(MachineFunction &MF) {
isProfitableToReMat(regB, rc, mi, DefMI, mbbi, Dist)){
DEBUG(errs() << "2addr: REMATTING : " << *DefMI << "\n");
unsigned regASubIdx = mi->getOperand(DstIdx).getSubReg();
TII->reMaterialize(*mbbi, mi, regA, regASubIdx, DefMI);
TII->reMaterialize(*mbbi, mi, regA, regASubIdx, DefMI, TRI);
ReMatRegs.set(regB);
++NumReMats;
} else {