diff options
Diffstat (limited to 'llvm/lib/Target/X86/X86ISelLowering.cpp')
-rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.cpp | 9 |
1 files changed, 2 insertions, 7 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index 06def2cacd8..d32146b32cf 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -8163,11 +8163,6 @@ static SDValue lowerVectorShuffleAsBroadcast(SDLoc DL, MVT VT, SDValue V, break; } - // Peek through any bitcast (only useful for loads). - SDValue BC = V; - while (BC.getOpcode() == ISD::BITCAST) - BC = BC.getOperand(0); - // Check if this is a broadcast of a scalar. We special case lowering // for scalars so that we can more effectively fold with loads. // First, look through bitcast: if the original value has a larger element @@ -8187,10 +8182,10 @@ static SDValue lowerVectorShuffleAsBroadcast(SDLoc DL, MVT VT, SDValue V, // Only AVX2 has register broadcasts. if (!Subtarget->hasAVX2() && !isShuffleFoldableLoad(V)) return SDValue(); - } else if (MayFoldLoad(BC) && !cast<LoadSDNode>(BC)->isVolatile()) { + } else if (MayFoldLoad(V) && !cast<LoadSDNode>(V)->isVolatile()) { // If we are broadcasting a load that is only used by the shuffle // then we can reduce the vector load to the broadcasted scalar load. - LoadSDNode *Ld = cast<LoadSDNode>(BC); + LoadSDNode *Ld = cast<LoadSDNode>(V); SDValue BaseAddr = Ld->getOperand(1); EVT AddrVT = BaseAddr.getValueType(); EVT SVT = VT.getScalarType(); |