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In InsertProfilingInitCall(), make it legal to pass in a null array, in

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which case you'll get a null array and zero passed to the profiling function.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13336 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Brian Gaeke 2004-05-03 22:06:33 +00:00
parent c03eb7b923
commit ebbc0e9bbf
2 changed files with 13 additions and 7 deletions
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18
lib/Transforms/Instrumentation/ProfilingUtils.cpp
View File

@ -23,7 +23,7 @@
void llvm::InsertProfilingInitCall(Function *MainFn, const char *FnName,
GlobalValue *Array) {
const Type *ArgVTy = PointerType::get(PointerType::get(Type::SByteTy));
const Type *UIntPtr = PointerType::get(Type::UIntTy);
const PointerType *UIntPtr = PointerType::get(Type::UIntTy);
Module &M = *MainFn->getParent();
Function *InitFn = M.getOrInsertFunction(FnName, Type::IntTy, Type::IntTy,
ArgVTy, UIntPtr, Type::UIntTy, 0);
@ -39,12 +39,18 @@ void llvm::InsertProfilingInitCall(Function *MainFn, const char *FnName,
BasicBlock::iterator InsertPos = Entry->begin();
while (isa<AllocaInst>(InsertPos)) ++InsertPos;
ConstantPointerRef *ArrayCPR = ConstantPointerRef::get(Array);
std::vector<Constant*> GEPIndices(2, Constant::getNullValue(Type::IntTy));
Args[2] = ConstantExpr::getGetElementPtr(ArrayCPR, GEPIndices);
unsigned NumElements =
cast<ArrayType>(Array->getType()->getElementType())->getNumElements();
unsigned NumElements = 0;
if (Array) {
ConstantPointerRef *ArrayCPR = ConstantPointerRef::get(Array);
Args[2] = ConstantExpr::getGetElementPtr(ArrayCPR, GEPIndices);
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[3] = ConstantUInt::get(Type::UIntTy, NumElements);
Instruction *InitCall = new CallInst(InitFn, Args, "newargc", InsertPos);

2
lib/Transforms/Instrumentation/ProfilingUtils.h
View File

@ -24,7 +24,7 @@ namespace llvm {
class BasicBlock;
void InsertProfilingInitCall(Function *MainFn, const char *FnName,
GlobalValue *Arr);
GlobalValue *Arr = 0);
void IncrementCounterInBlock(BasicBlock *BB, unsigned CounterNum,
ConstantPointerRef *CounterArray);
}