If dom tree information is available, make it possible to pass

it to get better phi node simplification.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119055 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 5 insertions, 2 deletions

diff --git a/include/llvm/Analysis/InstructionSimplify.h b/include/llvm/Analysis/InstructionSimplify.h
index 9825caff8f..d1ad061d5c 100644
--- a/include/llvm/Analysis/InstructionSimplify.h
+++ b/include/llvm/Analysis/InstructionSimplify.h
@@ -17,6 +17,7 @@
 #define LLVM_ANALYSIS_INSTRUCTIONSIMPLIFY_H
 
 namespace llvm {
+  class DominatorTree;
   class Instruction;
   class Value;
   class TargetData;
@@ -73,7 +74,8 @@ namespace llvm {
   /// instruction.  If not, this returns null.
   /// WARNING: If called on unreachable code, an instruction may be reported
   /// to simplify to itself.
-  Value *SimplifyInstruction(Instruction *I, const TargetData *TD = 0);
+  Value *SimplifyInstruction(Instruction *I, const TargetData *TD = 0,
+                             const DominatorTree *DT = 0);
 
 
   /// ReplaceAndSimplifyAllUses - Perform From->replaceAllUsesWith(To) and then
@@ -83,7 +85,8 @@ namespace llvm {
   /// simplifies and deletes scalar operations, it does not change the CFG.
   ///
   void ReplaceAndSimplifyAllUses(Instruction *From, Value *To,
-                                 const TargetData *TD = 0);
+                                 const TargetData *TD = 0,
+                                 const DominatorTree *DT = 0);
 } // end namespace llvm
 
 #endif