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Restore this assert now that the livevar bug is fixed.

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This verifies kill info for "ret" fp operands is right.

llvm-svn: 48656
This commit is contained in:
Chris Lattner 2008-03-21 20:41:27 +00:00
parent 8e40ac013e
commit 308a452c90
1 changed files with 7 additions and 2 deletions
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9
lib/Target/X86/X86FloatingPoint.cpp
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@ -1053,8 +1053,13 @@ void FPS::handleSpecialFP(MachineBasicBlock::iterator &I) {
MachineOperand &Op = MI->getOperand(i);
if (!Op.isReg() || Op.getReg() < X86::FP0 || Op.getReg() > X86::FP6)
continue;
// assert(Op.isUse() && Op.isKill() &&
// "Ret only defs operands, and values aren't live beyond it");
// FP Register uses must be kills unless there are two uses of the same
// register, in which case only one will be a kill.
assert(Op.isUse() &&
(Op.isKill() || // Marked kill.
getFPReg(Op) == FirstFPRegOp || // Second instance.
MI->killsRegister(Op.getReg())) && // Later use is marked kill.
"Ret only defs operands, and values aren't live beyond it");
if (FirstFPRegOp == ~0U)
FirstFPRegOp = getFPReg(Op);