[PATCH] remove the InstructionSimplifierPass immediately after InstructionCombiningPass

[Wei Mi]

REPOSITORY
  rL LLVM

http://reviews.llvm.org/D9838

Files:
  llvm/trunk/lib/Transforms/IPO/PassManagerBuilder.cpp

Index: llvm/trunk/lib/Transforms/IPO/PassManagerBuilder.cpp
===================================================================
--- llvm/trunk/lib/Transforms/IPO/PassManagerBuilder.cpp
+++ llvm/trunk/lib/Transforms/IPO/PassManagerBuilder.cpp
@@ -385,10 +385,6 @@
     // LoopUnroll may generate some redundency to cleanup.
     MPM.add(createInstructionCombiningPass());
 
-    // This is a barrier pass to avoid combine LICM pass and loop unroll pass
-    // within same loop pass manager.
-    MPM.add(createInstructionSimplifierPass());
-
     // Runtime unrolling will introduce runtime check in loop prologue. If the
     // unrolled loop is a inner loop, then the prologue will be inside the
     // outer loop. LICM pass can help to promote the runtime check out if the

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