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Revert Nate's patch to fix X86/store-fp-constant.ll. With the dag combiner

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and legalizer separated like they currently are, I don't see a way to handle
this xform.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32466 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2006-12-12 04:18:56 +00:00
parent 62be1a71f4
commit d93d46ee7e
1 changed files with 18 additions and 0 deletions
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18
lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
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@ -1648,6 +1648,24 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
Tmp2 = LegalizeOp(ST->getBasePtr()); // Legalize the pointer.
if (!ST->isTruncatingStore()) {
// Turn 'store float 1.0, Ptr' -> 'store int 0x12345678, Ptr'
// FIXME: We shouldn't do this for TargetConstantFP's.
// FIXME: move this to the DAG Combiner! Note that we can't regress due
// to phase ordering between legalized code and the dag combiner. This
// probably means that we need to integrate dag combiner and legalizer
// together.
if (ConstantFPSDNode *CFP = dyn_cast<ConstantFPSDNode>(ST->getValue())) {
if (CFP->getValueType(0) == MVT::f32) {
Tmp3 = DAG.getConstant(FloatToBits(CFP->getValue()), MVT::i32);
} else {
assert(CFP->getValueType(0) == MVT::f64 && "Unknown FP type!");
Tmp3 = DAG.getConstant(DoubleToBits(CFP->getValue()), MVT::i64);
}
Result = DAG.getStore(Tmp1, Tmp3, Tmp2, ST->getSrcValue(),
ST->getSrcValueOffset());
break;
}
switch (getTypeAction(ST->getStoredVT())) {
case Legal: {
Tmp3 = LegalizeOp(ST->getValue());