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[SelectionDAG] Use INT_MIN as (1 << 31) is UB for signed integers. NFCI. 

llvm-svn: 359873
This commit is contained in:
Simon Pilgrim 2019-05-03 11:32:00 +00:00
parent bfd00a6440
commit 42d2b604b5
1 changed files with 2 additions and 2 deletions
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4
llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
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@ -9056,7 +9056,7 @@ unsigned SelectionDAG::InferPtrAlignment(SDValue Ptr) const {
// If this is a direct reference to a stack slot, use information about the
// stack slot's alignment.
int FrameIdx = 1 << 31;
int FrameIdx = INT_MIN;
int64_t FrameOffset = 0;
if (FrameIndexSDNode *FI = dyn_cast<FrameIndexSDNode>(Ptr)) {
FrameIdx = FI->getIndex();
@ -9067,7 +9067,7 @@ unsigned SelectionDAG::InferPtrAlignment(SDValue Ptr) const {
FrameOffset = Ptr.getConstantOperandVal(1);
}
if (FrameIdx != (1 << 31)) {
if (FrameIdx != INT_MIN) {
const MachineFrameInfo &MFI = getMachineFunction().getFrameInfo();
unsigned FIInfoAlign = MinAlign(MFI.getObjectAlignment(FrameIdx),
FrameOffset);