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Add some debug output to SRETPromotion.

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llvm-svn: 54464
This commit is contained in:
Matthijs Kooijman 2008-08-07 15:14:04 +00:00
parent 2ba1b80c7f
commit 9ff5c484cf
1 changed files with 4 additions and 0 deletions
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4
lib/Transforms/IPO/StructRetPromotion.cpp
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@ -89,6 +89,8 @@ bool SRETPromotion::PromoteReturn(CallGraphNode *CGN) {
if (F->arg_size() == 0 || !F->hasStructRetAttr() || F->doesNotReturn())
return false;
DOUT << "SretPromotion: Looking at sret function " << F->getNameStart() << "\n";
assert (F->getReturnType() == Type::VoidTy && "Invalid function return type");
Function::arg_iterator AI = F->arg_begin();
const llvm::PointerType *FArgType = dyn_cast<PointerType>(AI->getType());
@ -99,10 +101,12 @@ bool SRETPromotion::PromoteReturn(CallGraphNode *CGN) {
// Check if it is ok to perform this promotion.
if (isSafeToUpdateAllCallers(F) == false) {
DOUT << "SretPromotion: Not all callers can be updated\n";
NumRejectedSRETUses++;
return false;
}
DOUT << "SretPromotion: sret argument will be promoted\n";
NumSRET++;
// [1] Replace use of sret parameter
AllocaInst *TheAlloca = new AllocaInst (STy, NULL, "mrv",