LowerFP_TO_SINT must not create a stack object if it's not needed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43004 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index bac658f..8726c58 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -3895,13 +3895,7 @@
SDOperand X86TargetLowering::LowerFP_TO_SINT(SDOperand Op, SelectionDAG &DAG) {
assert(Op.getValueType() <= MVT::i64 && Op.getValueType() >= MVT::i16 &&
"Unknown FP_TO_SINT to lower!");
- // We lower FP->sint64 into FISTP64, followed by a load, all to a temporary
- // stack slot.
SDOperand Result;
- MachineFunction &MF = DAG.getMachineFunction();
- unsigned MemSize = MVT::getSizeInBits(Op.getValueType())/8;
- int SSFI = MF.getFrameInfo()->CreateStackObject(MemSize, MemSize);
- SDOperand StackSlot = DAG.getFrameIndex(SSFI, getPointerTy());
// These are really Legal.
if (Op.getValueType() == MVT::i32 &&
@@ -3915,6 +3909,12 @@
Op.getOperand(0).getValueType() != MVT::f80)
return Result;
+ // We lower FP->sint64 into FISTP64, followed by a load, all to a temporary
+ // stack slot.
+ MachineFunction &MF = DAG.getMachineFunction();
+ unsigned MemSize = MVT::getSizeInBits(Op.getValueType())/8;
+ int SSFI = MF.getFrameInfo()->CreateStackObject(MemSize, MemSize);
+ SDOperand StackSlot = DAG.getFrameIndex(SSFI, getPointerTy());
unsigned Opc;
switch (Op.getValueType()) {
default: assert(0 && "Invalid FP_TO_SINT to lower!");