inline and remove the rest of commonIntCastTransforms.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93091 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Transforms/InstCombine/InstCombine.h b/lib/Transforms/InstCombine/InstCombine.h
index 136bb885e51333854e5d7b062ba3d82d0ab079ec..536790004e864a77edc8f219857edcfa26ff9dce 100644 (file)
--- a/lib/Transforms/InstCombine/InstCombine.h
+++ b/lib/Transforms/InstCombine/InstCombine.h
@@ -150,7 +150,6 @@ public:
   Instruction *FoldShiftByConstant(Value *Op0, ConstantInt *Op1,
                                    BinaryOperator &I);
   Instruction *commonCastTransforms(CastInst &CI);
-  Instruction *commonIntCastTransforms(CastInst &CI);
   Instruction *commonPointerCastTransforms(CastInst &CI);
   Instruction *visitTrunc(TruncInst &CI);
   Instruction *visitZExt(ZExtInst &CI);

diff --git a/lib/Transforms/InstCombine/InstCombineCasts.cpp b/lib/Transforms/InstCombine/InstCombineCasts.cpp
index 3b4821d9c954a7ba9032fa68917e43ee956bf89e..4bea64d9a6f8f9e948318a94af031aff160087f9 100644 (file)
--- a/lib/Transforms/InstCombine/InstCombineCasts.cpp
+++ b/lib/Transforms/InstCombine/InstCombineCasts.cpp
@@ -302,19 +302,6 @@ Instruction *InstCombiner::commonCastTransforms(CastInst &CI) {
   return 0;
 }
 
-/// commonIntCastTransforms - This function implements the common transforms
-/// for trunc, zext, and sext.
-Instruction *InstCombiner::commonIntCastTransforms(CastInst &CI) {
-  if (Instruction *Result = commonCastTransforms(CI))
-    return Result;
-
-  // See if we can simplify any instructions used by the LHS whose sole 
-  // purpose is to compute bits we don't care about.
-  if (SimplifyDemandedInstructionBits(CI))
-    return &CI;
-  return 0;
-}
-
 /// CanEvaluateTruncated - Return true if we can evaluate the specified
 /// expression tree as type Ty instead of its larger type, and arrive with the
 /// same value.  This is used by code that tries to eliminate truncates.
@@ -420,9 +407,14 @@ static bool CanEvaluateTruncated(Value *V, const Type *Ty) {
 }
 
 Instruction *InstCombiner::visitTrunc(TruncInst &CI) {
-  if (Instruction *Result = commonIntCastTransforms(CI))
+  if (Instruction *Result = commonCastTransforms(CI))
     return Result;
   
+  // See if we can simplify any instructions used by the input whose sole 
+  // purpose is to compute bits we don't care about.
+  if (SimplifyDemandedInstructionBits(CI))
+    return &CI;
+  
   Value *Src = CI.getOperand(0);
   const Type *DestTy = CI.getType(), *SrcTy = Src->getType();
   
@@ -690,11 +682,15 @@ static int CanEvaluateZExtd(Value *V, const Type *Ty,unsigned &NumCastsRemoved,
 
 Instruction *InstCombiner::visitZExt(ZExtInst &CI) {
   // If one of the common conversion will work, do it.
-  if (Instruction *Result = commonIntCastTransforms(CI))
+  if (Instruction *Result = commonCastTransforms(CI))
     return Result;
 
-  Value *Src = CI.getOperand(0);
+  // See if we can simplify any instructions used by the input whose sole 
+  // purpose is to compute bits we don't care about.
+  if (SimplifyDemandedInstructionBits(CI))
+    return &CI;
   
+  Value *Src = CI.getOperand(0);
   const Type *SrcTy = Src->getType(), *DestTy = CI.getType();
   
   // Attempt to extend the entire input expression tree to the destination
@@ -941,9 +937,14 @@ static unsigned CanEvaluateSExtd(Value *V, const Type *Ty,
 }
 
 Instruction *InstCombiner::visitSExt(SExtInst &CI) {
-  if (Instruction *I = commonIntCastTransforms(CI))
+  if (Instruction *I = commonCastTransforms(CI))
     return I;
   
+  // See if we can simplify any instructions used by the input whose sole 
+  // purpose is to compute bits we don't care about.
+  if (SimplifyDemandedInstructionBits(CI))
+    return &CI;
+  
   Value *Src = CI.getOperand(0);
   const Type *SrcTy = Src->getType(), *DestTy = CI.getType();