diff options
Diffstat (limited to 'llvm/lib/Target/PowerPC/PPCISelLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/PowerPC/PPCISelLowering.cpp | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp index 3fe9fe73499..af2ea695089 100644 --- a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp +++ b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp @@ -12228,8 +12228,12 @@ SDValue PPCTargetLowering::PerformDAGCombine(SDNode *N, EVT VT = N->getOperand(1).getValueType(); if (Subtarget.isPPC64() && !DCI.isBeforeLegalize() && isa<ConstantSDNode>(N->getOperand(1)) && VT == MVT::i32) { - SDValue Const64 = DAG.getConstant(N->getConstantOperandVal(1), dl, - MVT::i64); + // Need to sign-extended to 64-bits to handle negative values. + EVT MemVT = cast<StoreSDNode>(N)->getMemoryVT(); + uint64_t Val64 = SignExtend64(N->getConstantOperandVal(1), + MemVT.getSizeInBits()); + SDValue Const64 = DAG.getConstant(Val64, dl, MVT::i64); + // DAG.getTruncStore() can't be used here because it doesn't accept // the general (base + offset) addressing mode. // So we use UpdateNodeOperands and setTruncatingStore instead. |
