[llvm-commits] [llvm] r170106 - /llvm/trunk/lib/Transforms/InstCombine/InstCombineAddSub.cpp

[Eric Christopher]

Author: echristo
Date: Thu Dec 13 00:48:05 2012
New Revision: 170106

URL: http://llvm.org/viewvc/llvm-project?rev=170106&view=rev
Log:
Revert "Restore the PHI optimization I accidently removed" temporarily since
it seems to be breaking self-host for a few people and is PR14592.

This reverts commit r170024.

Modified:
    llvm/trunk/lib/Transforms/InstCombine/InstCombineAddSub.cpp

Modified: llvm/trunk/lib/Transforms/InstCombine/InstCombineAddSub.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/InstCombine/InstCombineAddSub.cpp?rev=170106&r1=170105&r2=170106&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/InstCombine/InstCombineAddSub.cpp (original)
+++ llvm/trunk/lib/Transforms/InstCombine/InstCombineAddSub.cpp Thu Dec 13 00:48:05 2012
@@ -354,10 +354,6 @@
   if (Value *V = SimplifyFAddInst(LHS, RHS, I.getFastMathFlags(), TD))
     return ReplaceInstUsesWith(I, V);
 
-  if (isa<PHINode>(LHS))
-    if (Instruction *NV = FoldOpIntoPhi(I))
-      return NV;
-
   // -A + B  -->  B - A
   // -A + -B  -->  -(A + B)
   if (Value *LHSV = dyn_castFNegVal(LHS))