[llvm-commits] [llvm] r120042 - /llvm/trunk/lib/Transforms/Scalar/LoopUnswitch.cpp

[Duncan Sands]

Author: baldrick
Date: Tue Nov 23 14:24:21 2010
New Revision: 120042

URL: http://llvm.org/viewvc/llvm-project?rev=120042&view=rev
Log:
Constant folding here is pointless, because InstructionSimplify
(which does constant folding and more) is called a few lines
later.

Modified:
    llvm/trunk/lib/Transforms/Scalar/LoopUnswitch.cpp

Modified: llvm/trunk/lib/Transforms/Scalar/LoopUnswitch.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Scalar/LoopUnswitch.cpp?rev=120042&r1=120041&r2=120042&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/Scalar/LoopUnswitch.cpp (original)
+++ llvm/trunk/lib/Transforms/Scalar/LoopUnswitch.cpp Tue Nov 23 14:24:21 2010
@@ -32,7 +32,6 @@
 #include "llvm/DerivedTypes.h"
 #include "llvm/Function.h"
 #include "llvm/Instructions.h"
-#include "llvm/Analysis/ConstantFolding.h"
 #include "llvm/Analysis/InlineCost.h"
 #include "llvm/Analysis/InstructionSimplify.h"
 #include "llvm/Analysis/LoopInfo.h"
@@ -969,13 +968,7 @@
   while (!Worklist.empty()) {
     Instruction *I = Worklist.back();
     Worklist.pop_back();
-    
-    // Simple constant folding.
-    if (Constant *C = ConstantFoldInstruction(I)) {
-      ReplaceUsesOfWith(I, C, Worklist, L, LPM);
-      continue;
-    }
-    
+
     // Simple DCE.
     if (isInstructionTriviallyDead(I)) {
       DEBUG(dbgs() << "Remove dead instruction '" << *I);