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* Make sure the resolved function call instructions get the name from the

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old call instruction
* Implement conversion of return values for calls.  This fixes bug:
   test/Regression/Transforms/FunctionResolve/retmismatch3.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3140 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2002-07-30 00:50:49 +00:00
parent 3f6496ab11
commit 9cf307fdeb
1 changed files with 15 additions and 7 deletions
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22
lib/Transforms/IPO/FunctionResolution.cpp
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@ -80,6 +80,9 @@ static void ConvertCallTo(CallInst *CI, Function *Dest) {
// Remove the old call instruction from the program...
BB->getInstList().remove(BBI);
// Transfer the name over...
NewCall->setName(CI->getName());
// Replace uses of the old instruction with the appropriate values...
//
if (NewCall->getType() == CI->getType()) {
@ -94,10 +97,19 @@ static void ConvertCallTo(CallInst *CI, Function *Dest) {
CI->replaceAllUsesWith(Constant::getNullValue(CI->getType()));
} else if (CI->getType() == Type::VoidTy) {
// If we are gaining a new return value, we don't have to do anything
// special.
// special here, because it will automatically be ignored.
} else {
assert(0 && "This should have been checked before!");
abort();
// Insert a cast instruction to convert the return value of the function
// into it's new type. Of course we only need to do this if the return
// value of the function is actually USED.
//
if (!CI->use_empty()) {
CastInst *NewCast = new CastInst(NewCall, CI->getType(),
NewCall->getName());
CI->replaceAllUsesWith(NewCast);
// Insert the new cast instruction...
BB->getInstList().insert(BBI, NewCast);
}
}
// The old instruction is no longer needed, destroy it!
@ -190,10 +202,6 @@ bool FunctionResolvingPass::run(Module &M) {
const FunctionType *ConcreteMT = Concrete->getFunctionType();
bool Broken = false;
assert((Old->getReturnType() == Concrete->getReturnType() ||
Concrete->getReturnType() == Type::VoidTy ||
Old->getReturnType() == Type::VoidTy) &&
"Differing return types not handled yet!");
assert(OldMT->getParamTypes().size() <=
ConcreteMT->getParamTypes().size() &&
"Concrete type must have more specified parameters!");