s/DebugInfoEnumerator/DebugInfoFinder/g

[oota-llvm.git] / lib / Transforms / Scalar / SimplifyLibCalls.cpp

diff --git a/lib/Transforms/Scalar/SimplifyLibCalls.cpp b/lib/Transforms/Scalar/SimplifyLibCalls.cpp
index 14212bc5799eb63c4385b7d8a56b8b8bcbdab25e..04bc39b4e0a1976b9357b4eb19e33a964357c089 100644 (file)
--- a/lib/Transforms/Scalar/SimplifyLibCalls.cpp
+++ b/lib/Transforms/Scalar/SimplifyLibCalls.cpp
@@ -29,6 +29,7 @@
 #include "llvm/ADT/SmallPtrSet.h"
 #include "llvm/ADT/StringMap.h"
 #include "llvm/ADT/Statistic.h"
+#include "llvm/ADT/STLExtras.h"
 #include "llvm/Support/Compiler.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/raw_ostream.h"
@@ -125,7 +126,7 @@ public:
 /// CastToCStr - Return V if it is an i8*, otherwise cast it to i8*.
 Value *LibCallOptimization::CastToCStr(Value *V, IRBuilder<> &B) {
   return
-        B.CreateBitCast(V, Context->getPointerTypeUnqual(Type::Int8Ty), "cstr");
+        B.CreateBitCast(V, PointerType::getUnqual(Type::Int8Ty), "cstr");
 }
 
 /// EmitStrLen - Emit a call to the strlen function to the builder, for the
@@ -139,7 +140,7 @@ Value *LibCallOptimization::EmitStrLen(Value *Ptr, IRBuilder<> &B) {
 
   Constant *StrLen =M->getOrInsertFunction("strlen", AttrListPtr::get(AWI, 2),
                                            TD->getIntPtrType(),
-                                    Context->getPointerTypeUnqual(Type::Int8Ty),
+                                    PointerType::getUnqual(Type::Int8Ty),
                                            NULL);
   CallInst *CI = B.CreateCall(StrLen, CastToCStr(Ptr, B), "strlen");
   if (const Function *F = dyn_cast<Function>(StrLen->stripPointerCasts()))
@@ -170,8 +171,8 @@ Value *LibCallOptimization::EmitMemChr(Value *Ptr, Value *Val,
   AWI = AttributeWithIndex::get(~0u, Attribute::ReadOnly | Attribute::NoUnwind);
 
   Value *MemChr = M->getOrInsertFunction("memchr", AttrListPtr::get(&AWI, 1),
-                                    Context->getPointerTypeUnqual(Type::Int8Ty),
-                                    Context->getPointerTypeUnqual(Type::Int8Ty),
+                                    PointerType::getUnqual(Type::Int8Ty),
+                                    PointerType::getUnqual(Type::Int8Ty),
                                          Type::Int32Ty, TD->getIntPtrType(),
                                          NULL);
   CallInst *CI = B.CreateCall3(MemChr, CastToCStr(Ptr, B), Val, Len, "memchr");
@@ -194,8 +195,8 @@ Value *LibCallOptimization::EmitMemCmp(Value *Ptr1, Value *Ptr2,
 
   Value *MemCmp = M->getOrInsertFunction("memcmp", AttrListPtr::get(AWI, 3),
                                          Type::Int32Ty,
-                                    Context->getPointerTypeUnqual(Type::Int8Ty),
-                                    Context->getPointerTypeUnqual(Type::Int8Ty),
+                                    PointerType::getUnqual(Type::Int8Ty),
+                                    PointerType::getUnqual(Type::Int8Ty),
                                          TD->getIntPtrType(), NULL);
   CallInst *CI = B.CreateCall3(MemCmp, CastToCStr(Ptr1, B), CastToCStr(Ptr2, B),
                                Len, "memcmp");
@@ -273,7 +274,7 @@ void LibCallOptimization::EmitPutS(Value *Str, IRBuilder<> &B) {
 
   Value *PutS = M->getOrInsertFunction("puts", AttrListPtr::get(AWI, 2),
                                        Type::Int32Ty,
-                                    Context->getPointerTypeUnqual(Type::Int8Ty),
+                                    PointerType::getUnqual(Type::Int8Ty),
                                        NULL);
   CallInst *CI = B.CreateCall(PutS, CastToCStr(Str, B), "puts");
   if (const Function *F = dyn_cast<Function>(PutS->stripPointerCasts()))
@@ -313,11 +314,11 @@ void LibCallOptimization::EmitFPutS(Value *Str, Value *File, IRBuilder<> &B) {
   Constant *F;
   if (isa<PointerType>(File->getType()))
     F = M->getOrInsertFunction("fputs", AttrListPtr::get(AWI, 3), Type::Int32Ty,
-                               Context->getPointerTypeUnqual(Type::Int8Ty),
+                               PointerType::getUnqual(Type::Int8Ty),
                                File->getType(), NULL);
   else
     F = M->getOrInsertFunction("fputs", Type::Int32Ty,
-                               Context->getPointerTypeUnqual(Type::Int8Ty),
+                               PointerType::getUnqual(Type::Int8Ty),
                                File->getType(), NULL);
   CallInst *CI = B.CreateCall2(F, CastToCStr(Str, B), File, "fputs");
 
@@ -338,12 +339,12 @@ void LibCallOptimization::EmitFWrite(Value *Ptr, Value *Size, Value *File,
   if (isa<PointerType>(File->getType()))
     F = M->getOrInsertFunction("fwrite", AttrListPtr::get(AWI, 3),
                                TD->getIntPtrType(),
-                               Context->getPointerTypeUnqual(Type::Int8Ty),
+                               PointerType::getUnqual(Type::Int8Ty),
                                TD->getIntPtrType(), TD->getIntPtrType(),
                                File->getType(), NULL);
   else
     F = M->getOrInsertFunction("fwrite", TD->getIntPtrType(),
-                               Context->getPointerTypeUnqual(Type::Int8Ty),
+                               PointerType::getUnqual(Type::Int8Ty),
                                TD->getIntPtrType(), TD->getIntPtrType(),
                                File->getType(), NULL);
   CallInst *CI = B.CreateCall4(F, CastToCStr(Ptr, B), Size,
@@ -518,18 +519,24 @@ struct VISIBILITY_HIDDEN ExitOpt : public LibCallOptimization {
       return 0;
 
     TerminatorInst *OldTI = CI->getParent()->getTerminator();
-    
+
     // Drop all successor phi node entries.
     for (unsigned i = 0, e = OldTI->getNumSuccessors(); i != e; ++i)
       OldTI->getSuccessor(i)->removePredecessor(CI->getParent());
-    
-    // Split the basic block after the call to exit.
-    BasicBlock::iterator FirstDead = CI; ++FirstDead;
-    CI->getParent()->splitBasicBlock(FirstDead);
-    B.SetInsertPoint(B.GetInsertBlock());
 
-    // Remove the branch that splitBB created and insert a return instead.
-    CI->getParent()->getTerminator()->eraseFromParent();
+    // Remove all instructions after the exit.
+    BasicBlock::iterator Dead = CI, E = OldTI; ++Dead;
+    while (Dead != E) {
+      BasicBlock::iterator Next = next(Dead);
+      if (Dead->getType() != Type::VoidTy)
+        Dead->replaceAllUsesWith(UndefValue::get(Dead->getType()));
+      Dead->eraseFromParent();
+      Dead = Next;
+    }
+
+    // Insert a return instruction.
+    OldTI->eraseFromParent();
+    B.SetInsertPoint(B.GetInsertBlock());
     B.CreateRet(CI->getOperand(1));
 
     return CI;
@@ -548,7 +555,7 @@ struct VISIBILITY_HIDDEN StrCatOpt : public LibCallOptimization {
     // Verify the "strcat" function prototype.
     const FunctionType *FT = Callee->getFunctionType();
     if (FT->getNumParams() != 2 ||
-        FT->getReturnType() != Context->getPointerTypeUnqual(Type::Int8Ty) ||
+        FT->getReturnType() != PointerType::getUnqual(Type::Int8Ty) ||
         FT->getParamType(0) != FT->getReturnType() ||
         FT->getParamType(1) != FT->getReturnType())
       return 0;
@@ -595,7 +602,7 @@ struct VISIBILITY_HIDDEN StrNCatOpt : public StrCatOpt {
     // Verify the "strncat" function prototype.
     const FunctionType *FT = Callee->getFunctionType();
     if (FT->getNumParams() != 3 ||
-        FT->getReturnType() != Context->getPointerTypeUnqual(Type::Int8Ty) ||
+        FT->getReturnType() != PointerType::getUnqual(Type::Int8Ty) ||
         FT->getParamType(0) != FT->getReturnType() ||
         FT->getParamType(1) != FT->getReturnType() ||
         !isa<IntegerType>(FT->getParamType(2)))
@@ -640,7 +647,7 @@ struct VISIBILITY_HIDDEN StrChrOpt : public LibCallOptimization {
     // Verify the "strchr" function prototype.
     const FunctionType *FT = Callee->getFunctionType();
     if (FT->getNumParams() != 2 ||
-        FT->getReturnType() != Context->getPointerTypeUnqual(Type::Int8Ty) ||
+        FT->getReturnType() != PointerType::getUnqual(Type::Int8Ty) ||
         FT->getParamType(0) != FT->getReturnType())
       return 0;
     
@@ -694,7 +701,7 @@ struct VISIBILITY_HIDDEN StrCmpOpt : public LibCallOptimization {
     const FunctionType *FT = Callee->getFunctionType();
     if (FT->getNumParams() != 2 || FT->getReturnType() != Type::Int32Ty ||
         FT->getParamType(0) != FT->getParamType(1) ||
-        FT->getParamType(0) != Context->getPointerTypeUnqual(Type::Int8Ty))
+        FT->getParamType(0) != PointerType::getUnqual(Type::Int8Ty))
       return 0;
     
     Value *Str1P = CI->getOperand(1), *Str2P = CI->getOperand(2);
@@ -738,7 +745,7 @@ struct VISIBILITY_HIDDEN StrNCmpOpt : public LibCallOptimization {
     const FunctionType *FT = Callee->getFunctionType();
     if (FT->getNumParams() != 3 || FT->getReturnType() != Type::Int32Ty ||
         FT->getParamType(0) != FT->getParamType(1) ||
-        FT->getParamType(0) != Context->getPointerTypeUnqual(Type::Int8Ty) ||
+        FT->getParamType(0) != PointerType::getUnqual(Type::Int8Ty) ||
         !isa<IntegerType>(FT->getParamType(2)))
       return 0;
     
@@ -784,7 +791,7 @@ struct VISIBILITY_HIDDEN StrCpyOpt : public LibCallOptimization {
     const FunctionType *FT = Callee->getFunctionType();
     if (FT->getNumParams() != 2 || FT->getReturnType() != FT->getParamType(0) ||
         FT->getParamType(0) != FT->getParamType(1) ||
-        FT->getParamType(0) != Context->getPointerTypeUnqual(Type::Int8Ty))
+        FT->getParamType(0) != PointerType::getUnqual(Type::Int8Ty))
       return 0;
     
     Value *Dst = CI->getOperand(1), *Src = CI->getOperand(2);
@@ -811,7 +818,7 @@ struct VISIBILITY_HIDDEN StrNCpyOpt : public LibCallOptimization {
     const FunctionType *FT = Callee->getFunctionType();
     if (FT->getNumParams() != 3 || FT->getReturnType() != FT->getParamType(0) ||
         FT->getParamType(0) != FT->getParamType(1) ||
-        FT->getParamType(0) != Context->getPointerTypeUnqual(Type::Int8Ty) ||
+        FT->getParamType(0) != PointerType::getUnqual(Type::Int8Ty) ||
         !isa<IntegerType>(FT->getParamType(2)))
       return 0;
 
@@ -856,7 +863,7 @@ struct VISIBILITY_HIDDEN StrLenOpt : public LibCallOptimization {
   virtual Value *CallOptimizer(Function *Callee, CallInst *CI, IRBuilder<> &B) {
     const FunctionType *FT = Callee->getFunctionType();
     if (FT->getNumParams() != 1 ||
-        FT->getParamType(0) != Context->getPointerTypeUnqual(Type::Int8Ty) ||
+        FT->getParamType(0) != PointerType::getUnqual(Type::Int8Ty) ||
         !isa<IntegerType>(FT->getReturnType()))
       return 0;
     
@@ -930,7 +937,7 @@ struct VISIBILITY_HIDDEN MemCmpOpt : public LibCallOptimization {
     // memcmp(S1,S2,2) != 0 -> (*(short*)LHS ^ *(short*)RHS)  != 0
     // memcmp(S1,S2,4) != 0 -> (*(int*)LHS ^ *(int*)RHS)  != 0
     if ((Len == 2 || Len == 4) && IsOnlyUsedInZeroEqualityComparison(CI)) {
-      const Type *PTy = Context->getPointerTypeUnqual(Len == 2 ?
+      const Type *PTy = PointerType::getUnqual(Len == 2 ?
                                                Type::Int16Ty : Type::Int32Ty);
       LHS = B.CreateBitCast(LHS, PTy, "tmp");
       RHS = B.CreateBitCast(RHS, PTy, "tmp");
@@ -1098,7 +1105,7 @@ struct VISIBILITY_HIDDEN Exp2Opt : public LibCallOptimization {
 
       Constant *One = ConstantFP::get(*Context, APFloat(1.0f));
       if (Op->getType() != Type::FloatTy)
-        One = Context->getConstantExprFPExtend(One, Op->getType());
+        One = ConstantExpr::getFPExtend(One, Op->getType());
 
       Module *M = Caller->getParent();
       Value *Callee = M->getOrInsertFunction(Name, Op->getType(),