diff options
Diffstat (limited to 'lib/Target/ARM/ARMISelLowering.cpp')
| -rw-r--r-- | lib/Target/ARM/ARMISelLowering.cpp | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/lib/Target/ARM/ARMISelLowering.cpp b/lib/Target/ARM/ARMISelLowering.cpp index 18d30083f8..67cb29362d 100644 --- a/lib/Target/ARM/ARMISelLowering.cpp +++ b/lib/Target/ARM/ARMISelLowering.cpp @@ -4182,7 +4182,15 @@ static SDValue GeneratePerfectShuffle(unsigned PFEntry, SDValue LHS, switch (OpNum) { default: llvm_unreachable("Unknown shuffle opcode!"); case OP_VREV: - return DAG.getNode(ARMISD::VREV64, dl, VT, OpLHS); + // VREV divides the vector in half and swaps within the half. + if (VT.getVectorElementType() == MVT::i32) + return DAG.getNode(ARMISD::VREV64, dl, VT, OpLHS); + // vrev <4 x i16> -> VREV32 + if (VT.getVectorElementType() == MVT::i16) + return DAG.getNode(ARMISD::VREV32, dl, VT, OpLHS); + // vrev <4 x i8> -> VREV16 + assert(VT.getVectorElementType() == MVT::i8); + return DAG.getNode(ARMISD::VREV16, dl, VT, OpLHS); case OP_VDUP0: case OP_VDUP1: case OP_VDUP2: |