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make the 'fp return in ST(0)' optimization smart enough to

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look through token factor

llvm-svn: 46053
This commit is contained in:
Chris Lattner 2008-01-16 05:53:06 +00:00
parent d9f29a1e3e
commit 1819f31640
1 changed files with 1 additions and 1 deletions
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lib/Target/X86/X86ISelLowering.cpp
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@ -767,7 +767,7 @@ SDOperand X86TargetLowering::LowerRET(SDOperand Op, SelectionDAG &DAG) {
// If this is a load into a scalarsse value, don't store the loaded value // If this is a load into a scalarsse value, don't store the loaded value
// back to the stack, only to reload it: just replace the scalar-sse load. // back to the stack, only to reload it: just replace the scalar-sse load.
if (ISD::isNON_EXTLoad(Value.Val) && if (ISD::isNON_EXTLoad(Value.Val) &&
(Chain == Value.getValue(1) || Chain == Value.getOperand(0))) { Chain.reachesChainWithoutSideEffects(Value.getOperand(0))) {
Chain = Value.getOperand(0); Chain = Value.getOperand(0);
MemLoc = Value.getOperand(1); MemLoc = Value.getOperand(1);
} else { } else {