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Thread LLVMContext through the constant folding APIs, which touches a lot of files.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74844 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Owen Anderson
2009-07-06 18:42:36 +00:00
parent e034393b15
commit 508955156a
21 changed files with 256 additions and 195 deletions
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29
lib/Transforms/Instrumentation/ProfilingUtils.cpp
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@ -18,13 +18,15 @@
#include "llvm/Constants.h"
#include "llvm/DerivedTypes.h"
#include "llvm/Instructions.h"
#include "llvm/LLVMContext.h"
#include "llvm/Module.h"
void llvm::InsertProfilingInitCall(Function *MainFn, const char *FnName,
GlobalValue *Array) {
LLVMContext* Context = MainFn->getContext();
const Type *ArgVTy =
PointerType::getUnqual(PointerType::getUnqual(Type::Int8Ty));
const PointerType *UIntPtr = PointerType::getUnqual(Type::Int32Ty);
Context->getPointerTypeUnqual(Context->getPointerTypeUnqual(Type::Int8Ty));
const PointerType *UIntPtr = Context->getPointerTypeUnqual(Type::Int32Ty);
Module &M = *MainFn->getParent();
Constant *InitFn = M.getOrInsertFunction(FnName, Type::Int32Ty, Type::Int32Ty,
ArgVTy, UIntPtr, Type::Int32Ty,
@ -33,27 +35,27 @@ void llvm::InsertProfilingInitCall(Function *MainFn, const char *FnName,
// This could force argc and argv into programs that wouldn't otherwise have
// them, but instead we just pass null values in.
std::vector<Value*> Args(4);
Args[0] = Constant::getNullValue(Type::Int32Ty);
Args[1] = Constant::getNullValue(ArgVTy);
Args[0] = Context->getNullValue(Type::Int32Ty);
Args[1] = Context->getNullValue(ArgVTy);
// Skip over any allocas in the entry block.
BasicBlock *Entry = MainFn->begin();
BasicBlock::iterator InsertPos = Entry->begin();
while (isa<AllocaInst>(InsertPos)) ++InsertPos;
std::vector<Constant*> GEPIndices(2, Constant::getNullValue(Type::Int32Ty));
std::vector<Constant*> GEPIndices(2, Context->getNullValue(Type::Int32Ty));
unsigned NumElements = 0;
if (Array) {
Args[2] = ConstantExpr::getGetElementPtr(Array, &GEPIndices[0],
Args[2] = Context->getConstantExprGetElementPtr(Array, &GEPIndices[0],
GEPIndices.size());
NumElements =
cast<ArrayType>(Array->getType()->getElementType())->getNumElements();
} else {
// If this profiling instrumentation doesn't have a constant array, just
// pass null.
Args[2] = ConstantPointerNull::get(UIntPtr);
Args[2] = Context->getConstantPointerNull(UIntPtr);
}
Args[3] = ConstantInt::get(Type::Int32Ty, NumElements);
Args[3] = Context->getConstantInt(Type::Int32Ty, NumElements);
Instruction *InitCall = CallInst::Create(InitFn, Args.begin(), Args.end(),
"newargc", InsertPos);
@ -99,6 +101,8 @@ void llvm::InsertProfilingInitCall(Function *MainFn, const char *FnName,
void llvm::IncrementCounterInBlock(BasicBlock *BB, unsigned CounterNum,
GlobalValue *CounterArray) {
LLVMContext* Context = BB->getContext();
// Insert the increment after any alloca or PHI instructions...
BasicBlock::iterator InsertPos = BB->getFirstNonPHI();
while (isa<AllocaInst>(InsertPos))
@ -106,15 +110,16 @@ void llvm::IncrementCounterInBlock(BasicBlock *BB, unsigned CounterNum,
// Create the getelementptr constant expression
std::vector<Constant*> Indices(2);
Indices[0] = Constant::getNullValue(Type::Int32Ty);
Indices[1] = ConstantInt::get(Type::Int32Ty, CounterNum);
Indices[0] = Context->getNullValue(Type::Int32Ty);
Indices[1] = Context->getConstantInt(Type::Int32Ty, CounterNum);
Constant *ElementPtr =
ConstantExpr::getGetElementPtr(CounterArray, &Indices[0], Indices.size());
Context->getConstantExprGetElementPtr(CounterArray, &Indices[0],
Indices.size());
// Load, increment and store the value back.
Value *OldVal = new LoadInst(ElementPtr, "OldFuncCounter", InsertPos);
Value *NewVal = BinaryOperator::Create(Instruction::Add, OldVal,
ConstantInt::get(Type::Int32Ty, 1),
Context->getConstantInt(Type::Int32Ty, 1),
"NewFuncCounter", InsertPos);
new StoreInst(NewVal, ElementPtr, InsertPos);
}