#define DEBUG_TYPE "mergefunc"
#include "llvm/Transforms/IPO.h"
-#include "llvm/Constants.h"
-#include "llvm/IRBuilder.h"
-#include "llvm/InlineAsm.h"
-#include "llvm/Instructions.h"
-#include "llvm/LLVMContext.h"
-#include "llvm/Module.h"
-#include "llvm/Operator.h"
-#include "llvm/Pass.h"
#include "llvm/ADT/DenseSet.h"
#include "llvm/ADT/FoldingSet.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallSet.h"
#include "llvm/ADT/Statistic.h"
+#include "llvm/IR/Constants.h"
+#include "llvm/IR/DataLayout.h"
+#include "llvm/IR/IRBuilder.h"
+#include "llvm/IR/InlineAsm.h"
+#include "llvm/IR/Instructions.h"
+#include "llvm/IR/LLVMContext.h"
+#include "llvm/IR/Module.h"
+#include "llvm/IR/Operator.h"
+#include "llvm/Pass.h"
#include "llvm/Support/CallSite.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/ValueHandle.h"
#include "llvm/Support/raw_ostream.h"
-#include "llvm/DataLayout.h"
#include <vector>
using namespace llvm;
STATISTIC(NumAliasesWritten, "Number of aliases generated");
STATISTIC(NumDoubleWeak, "Number of new functions created");
+/// Returns the type id for a type to be hashed. We turn pointer types into
+/// integers here because the actual compare logic below considers pointers and
+/// integers of the same size as equal.
+static Type::TypeID getTypeIDForHash(Type *Ty) {
+ if (Ty->isPointerTy())
+ return Type::IntegerTyID;
+ return Ty->getTypeID();
+}
+
/// Creates a hash-code for the function which is the same for any two
/// functions that will compare equal, without looking at the instructions
/// inside the function.
ID.AddInteger(F->getCallingConv());
ID.AddBoolean(F->hasGC());
ID.AddBoolean(FTy->isVarArg());
- ID.AddInteger(FTy->getReturnType()->getTypeID());
+ ID.AddInteger(getTypeIDForHash(FTy->getReturnType()));
for (unsigned i = 0, e = FTy->getNumParams(); i != e; ++i)
- ID.AddInteger(FTy->getParamType(i)->getTypeID());
+ ID.AddInteger(getTypeIDForHash(FTy->getParamType(i)));
return ID.ComputeHash();
}
// Any two pointers in the same address space are equivalent, intptr_t and
// pointers are equivalent. Otherwise, standard type equivalence rules apply.
-bool FunctionComparator::isEquivalentType(Type *Ty1,
- Type *Ty2) const {
+bool FunctionComparator::isEquivalentType(Type *Ty1, Type *Ty2) const {
if (Ty1 == Ty2)
return true;
if (Ty1->getTypeID() != Ty2->getTypeID()) {
const GEPOperator *GEP2) {
// When we have target data, we can reduce the GEP down to the value in bytes
// added to the address.
- if (TD && GEP1->hasAllConstantIndices() && GEP2->hasAllConstantIndices()) {
- SmallVector<Value *, 8> Indices1(GEP1->idx_begin(), GEP1->idx_end());
- SmallVector<Value *, 8> Indices2(GEP2->idx_begin(), GEP2->idx_end());
- uint64_t Offset1 = TD->getIndexedOffset(GEP1->getPointerOperandType(),
- Indices1);
- uint64_t Offset2 = TD->getIndexedOffset(GEP2->getPointerOperandType(),
- Indices2);
+ unsigned BitWidth = TD ? TD->getPointerSizeInBits() : 1;
+ APInt Offset1(BitWidth, 0), Offset2(BitWidth, 0);
+ if (TD &&
+ GEP1->accumulateConstantOffset(*TD, Offset1) &&
+ GEP2->accumulateConstantOffset(*TD, Offset2)) {
return Offset1 == Offset2;
}
if (NewG->getReturnType()->isVoidTy()) {
Builder.CreateRetVoid();
} else {
- Builder.CreateRet(Builder.CreateBitCast(CI, NewG->getReturnType()));
+ Type *RetTy = NewG->getReturnType();
+ if (CI->getType()->isIntegerTy() && RetTy->isPointerTy())
+ Builder.CreateRet(Builder.CreateIntToPtr(CI, RetTy));
+ else if (CI->getType()->isPointerTy() && RetTy->isIntegerTy())
+ Builder.CreateRet(Builder.CreatePtrToInt(CI, RetTy));
+ else
+ Builder.CreateRet(Builder.CreateBitCast(CI, RetTy));
}
NewG->copyAttributesFrom(G);