6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-01-28 21:34:23 +00:00
Code Issues Projects Releases Wiki Activity

initialization calls now return argc. If the program uses the argc value

Browse Source 
passed into main, make sure they use the return value of the init call
instead of the one passed in.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11262 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2004-02-10 17:41:01 +00:00
parent affce4fd93
commit 81d1a2207d
1 changed files with 32 additions and 25 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

57
lib/Transforms/Instrumentation/BlockProfiling.cpp
View File

@ -31,7 +31,7 @@ static void insertInitializationCall(Function *MainFn, const char *FnName,
const Type *ArgVTy = PointerType::get(PointerType::get(Type::SByteTy));
const Type *UIntPtr = PointerType::get(Type::UIntTy);
Module &M = *MainFn->getParent();
Function *InitFn = M.getOrInsertFunction(FnName, Type::VoidTy, Type::IntTy,
Function *InitFn = M.getOrInsertFunction(FnName, Type::IntTy, Type::IntTy,
ArgVTy, UIntPtr, Type::UIntTy, 0);
// This could force argc and argv into programs that wouldn't otherwise have
@ -45,29 +45,6 @@ static void insertInitializationCall(Function *MainFn, const char *FnName,
BasicBlock::iterator InsertPos = Entry->begin();
while (isa<AllocaInst>(InsertPos)) ++InsertPos;
Function::aiterator AI;
switch (MainFn->asize()) {
default:
case 2:
AI = MainFn->abegin(); ++AI;
if (AI->getType() != ArgVTy) {
Args[1] = new CastInst(AI, ArgVTy, "argv.cast", InsertPos);
} else {
Args[1] = AI;
}
case 1:
AI = MainFn->abegin();
if (AI->getType() != Type::IntTy) {
Args[0] = new CastInst(AI, Type::IntTy, "argc.cast", InsertPos);
} else {
Args[0] = AI;
}
case 0:
break;
}
ConstantPointerRef *ArrayCPR = ConstantPointerRef::get(Array);
std::vector<Constant*> GEPIndices(2, Constant::getNullValue(Type::LongTy));
Args[2] = ConstantExpr::getGetElementPtr(ArrayCPR, GEPIndices);
@ -76,7 +53,37 @@ static void insertInitializationCall(Function *MainFn, const char *FnName,
cast<ArrayType>(Array->getType()->getElementType())->getNumElements();
Args[3] = ConstantUInt::get(Type::UIntTy, NumElements);
new CallInst(InitFn, Args, "", InsertPos);
Instruction *InitCall = new CallInst(InitFn, Args, "newargc", InsertPos);
// If argc or argv are not available in main, just pass null values in.
Function::aiterator AI;
switch (MainFn->asize()) {
default:
case 2:
AI = MainFn->abegin(); ++AI;
if (AI->getType() != ArgVTy) {
InitCall->setOperand(2, new CastInst(AI, ArgVTy, "argv.cast", InitCall));
} else {
InitCall->setOperand(2, AI);
}
case 1:
AI = MainFn->abegin();
// If the program looked at argc, have it look at the return value of the
// init call instead.
if (AI->getType() != Type::IntTy) {
if (!AI->use_empty())
AI->replaceAllUsesWith(new CastInst(InitCall, AI->getType(), "",
InsertPos));
InitCall->setOperand(1, new CastInst(AI, Type::IntTy, "argc.cast",
InitCall));
} else {
AI->replaceAllUsesWith(InitCall);
InitCall->setOperand(1, AI);
}
case 0: break;
}
}
static void IncrementCounterInBlock(BasicBlock *BB, unsigned CounterNum,