[llvm] r234118 - [DAGCombiner] Merge FMUL Scalar and Vector constant canonicalization to RHS. NFCI.

[Simon Pilgrim]

Author: rksimon
Date: Sun Apr  5 09:30:37 2015
New Revision: 234118

URL: http://llvm.org/viewvc/llvm-project?rev=234118&view=rev
Log:
[DAGCombiner] Merge FMUL Scalar and Vector constant canonicalization to RHS. NFCI.

Modified:
    llvm/trunk/lib/CodeGen/SelectionDAG/DAGCombiner.cpp

Modified: llvm/trunk/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/DAGCombiner.cpp?rev=234118&r1=234117&r2=234118&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/DAGCombiner.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/DAGCombiner.cpp Sun Apr  5 09:30:37 2015
@@ -7539,13 +7539,6 @@ SDValue DAGCombiner::visitFMUL(SDNode *N
     // This just handles C1 * C2 for vectors. Other vector folds are below.
     if (SDValue FoldedVOp = SimplifyVBinOp(N))
       return FoldedVOp;
-
-    // Canonicalize vector constant to RHS.
-    if (N0.getOpcode() == ISD::BUILD_VECTOR &&
-        N1.getOpcode() != ISD::BUILD_VECTOR)
-      if (auto *BV0 = dyn_cast<BuildVectorSDNode>(N0))
-        if (BV0->isConstant())
-          return DAG.getNode(N->getOpcode(), SDLoc(N), VT, N1, N0);
   }
 
   // fold (fmul c1, c2) -> c1*c2
@@ -7553,7 +7546,8 @@ SDValue DAGCombiner::visitFMUL(SDNode *N
     return DAG.getNode(ISD::FMUL, SDLoc(N), VT, N0, N1);
 
   // canonicalize constant to RHS
-  if (N0CFP && !N1CFP)
+  if (isConstantFPBuildVectorOrConstantFP(N0) &&
+     !isConstantFPBuildVectorOrConstantFP(N1))
     return DAG.getNode(ISD::FMUL, SDLoc(N), VT, N1, N0);
 
   // fold (fmul A, 1.0) -> A