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ignore register zero in isRegTiedToUseOperand, following the example of

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isRegTiedToDefOperand.  Thanks to Bob for pointing this out!



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68734 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2009-04-09 23:33:34 +00:00
parent 3ca15c989c
commit c30aa7b3de
1 changed files with 1 additions and 1 deletions
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2
lib/CodeGen/MachineInstr.cpp
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@ -698,7 +698,7 @@ bool MachineInstr::isRegTiedToUseOperand(unsigned DefOpIdx, unsigned *UseOpIdx){
if (getOpcode() == TargetInstrInfo::INLINEASM) { if (getOpcode() == TargetInstrInfo::INLINEASM) {
assert(DefOpIdx >= 2); assert(DefOpIdx >= 2);
const MachineOperand &MO = getOperand(DefOpIdx); const MachineOperand &MO = getOperand(DefOpIdx);
if (!MO.isReg() || !MO.isDef()) if (!MO.isReg() || !MO.isDef() || MO.getReg() == 0)
return false; return false;
// Determine the actual operand no corresponding to this index. // Determine the actual operand no corresponding to this index.
unsigned DefNo = 0; unsigned DefNo = 0;