diff options
Diffstat (limited to 'llvm/lib/Target/PowerPC')
| -rw-r--r-- | llvm/lib/Target/PowerPC/PPCISelLowering.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp index bfdd08b69c2..62fac4bd910 100644 --- a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp +++ b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp @@ -12604,9 +12604,10 @@ SDValue PPCTargetLowering::PerformDAGCombine(SDNode *N, (Op1VT == MVT::i32 || Op1VT == MVT::i16 || (Subtarget.hasLDBRX() && Subtarget.isPPC64() && Op1VT == MVT::i64))) { - // STBRX can only handle simple types. + // STBRX can only handle simple types and it makes no sense to store less + // two bytes in byte-reversed order. EVT mVT = cast<StoreSDNode>(N)->getMemoryVT(); - if (mVT.isExtended()) + if (mVT.isExtended() || mVT.getSizeInBits() < 16) break; SDValue BSwapOp = N->getOperand(1).getOperand(0); |
