Revert r257055, it caused PR26064.

[oota-llvm.git] / lib / Target / X86 / X86ISelLowering.cpp

diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 06def2cacd842598c7771a711b776994db47e90a..d32146b32cf63baa5ddb697fad1bd745cef06590 100644 (file)
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/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();