diff options
Diffstat (limited to 'llvm/lib/CodeGen')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp index 4cbc9fe4ecf..3b6185c84ed 100644 --- a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp @@ -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()); |
