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Return if we changed anything or not.

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llvm-svn: 99695
This commit is contained in:
Bill Wendling 2010-03-27 01:22:38 +00:00
parent 4b55d4fd59
commit ced10a4468
1 changed files with 9 additions and 11 deletions
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20
lib/CodeGen/DwarfEHPrepare.cpp
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@ -86,7 +86,7 @@ namespace {
/// CleanupSelectors - Any remaining eh.selector intrinsic calls which still
/// use the ".llvm.eh.catch.all.value" call need to convert to using it's
/// initializer instead.
void CleanupSelectors();
bool CleanupSelectors();
/// HandleURoRInvokes - Handle invokes of "_Unwind_Resume_or_Rethrow"
/// calls. The "unwind" part of these invokes jump to a landing pad within
@ -220,7 +220,8 @@ DwarfEHPrepare::FindSelectorAndURoR(Instruction *Inst, bool &URoRInvoke,
/// CleanupSelectors - Any remaining eh.selector intrinsic calls which still use
/// the ".llvm.eh.catch.all.value" call need to convert to using it's
/// initializer instead.
void DwarfEHPrepare::CleanupSelectors() {
bool DwarfEHPrepare::CleanupSelectors() {
bool Changed = false;
for (Value::use_iterator
I = SelectorIntrinsic->use_begin(),
E = SelectorIntrinsic->use_end(); I != E; ++I) {
@ -232,7 +233,10 @@ void DwarfEHPrepare::CleanupSelectors() {
GlobalVariable *GV = dyn_cast<GlobalVariable>(Sel->getOperand(OpIdx));
if (GV != EHCatchAllValue) continue;
Sel->setOperand(OpIdx, EHCatchAllValue->getInitializer());
Changed = true;
}
return Changed;
}
/// HandleURoRInvokes - Handle invokes of "_Unwind_Resume_or_Rethrow" calls. The
@ -254,19 +258,13 @@ bool DwarfEHPrepare::HandleURoRInvokes() {
if (!URoR) {
URoR = F->getParent()->getFunction("_Unwind_Resume_or_Rethrow");
if (!URoR) {
CleanupSelectors();
return false;
}
if (!URoR) return CleanupSelectors();
}
if (!ExceptionValueIntrinsic) {
ExceptionValueIntrinsic =
Intrinsic::getDeclaration(F->getParent(), Intrinsic::eh_exception);
if (!ExceptionValueIntrinsic) {
CleanupSelectors();
return false;
}
if (!ExceptionValueIntrinsic) return CleanupSelectors();
}
bool Changed = false;
@ -337,7 +335,7 @@ bool DwarfEHPrepare::HandleURoRInvokes() {
}
}
CleanupSelectors();
Changed |= CleanupSelectors();
return Changed;
}