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Convert EXTRACT_SUBREG to COPY when emitting machine instrs.

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EXTRACT_SUBREG no longer appears as a machine instruction. Use COPY instead.

Add isCopy() checks in many places using isMoveInstr() and isExtractSubreg().
The isMoveInstr hook will be removed later.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107879 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen
2010-07-08 16:40:22 +00:00
parent 5c00e07795
commit 0bc25f4040
18 changed files with 103 additions and 131 deletions
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3
lib/CodeGen/ProcessImplicitDefs.cpp
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@@ -50,8 +50,7 @@ bool ProcessImplicitDefs::CanTurnIntoImplicitDef(MachineInstr *MI,
return true;
switch(OpIdx) {
case 1: return (MI->isExtractSubreg() || MI->isCopy()) &&
MI->getOperand(0).getSubReg() == 0;
case 1: return MI->isCopy() && MI->getOperand(0).getSubReg() == 0;
case 2: return MI->isSubregToReg() && MI->getOperand(0).getSubReg() == 0;
default: return false;
}