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Return if we changed anything or not. 

llvm-svn: 99695
This commit is contained in:
Bill Wendling 2010-03-27 01:22:38 +00:00
parent f2c1f40e95
commit ec8b44adeb
1 changed files with 9 additions and 11 deletions
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20
llvm/lib/CodeGen/DwarfEHPrepare.cpp
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@ -86,7 +86,7 @@ namespace {
/// CleanupSelectors - Any remaining eh.selector intrinsic calls which still /// CleanupSelectors - Any remaining eh.selector intrinsic calls which still
/// use the ".llvm.eh.catch.all.value" call need to convert to using it's /// use the ".llvm.eh.catch.all.value" call need to convert to using it's
/// initializer instead. /// initializer instead.
void CleanupSelectors(); bool CleanupSelectors();
/// HandleURoRInvokes - Handle invokes of "_Unwind_Resume_or_Rethrow" /// HandleURoRInvokes - Handle invokes of "_Unwind_Resume_or_Rethrow"
/// calls. The "unwind" part of these invokes jump to a landing pad within /// 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 /// CleanupSelectors - Any remaining eh.selector intrinsic calls which still use
/// the ".llvm.eh.catch.all.value" call need to convert to using it's /// the ".llvm.eh.catch.all.value" call need to convert to using it's
/// initializer instead. /// initializer instead.
void DwarfEHPrepare::CleanupSelectors() { bool DwarfEHPrepare::CleanupSelectors() {
bool Changed = false;
for (Value::use_iterator for (Value::use_iterator
I = SelectorIntrinsic->use_begin(), I = SelectorIntrinsic->use_begin(),
E = SelectorIntrinsic->use_end(); I != E; ++I) { E = SelectorIntrinsic->use_end(); I != E; ++I) {
@ -232,7 +233,10 @@ void DwarfEHPrepare::CleanupSelectors() {
GlobalVariable *GV = dyn_cast<GlobalVariable>(Sel->getOperand(OpIdx)); GlobalVariable *GV = dyn_cast<GlobalVariable>(Sel->getOperand(OpIdx));
if (GV != EHCatchAllValue) continue; if (GV != EHCatchAllValue) continue;
Sel->setOperand(OpIdx, EHCatchAllValue->getInitializer()); Sel->setOperand(OpIdx, EHCatchAllValue->getInitializer());
Changed = true;
} }
return Changed;
} }
/// HandleURoRInvokes - Handle invokes of "_Unwind_Resume_or_Rethrow" calls. The /// HandleURoRInvokes - Handle invokes of "_Unwind_Resume_or_Rethrow" calls. The
@ -254,19 +258,13 @@ bool DwarfEHPrepare::HandleURoRInvokes() {
if (!URoR) { if (!URoR) {
URoR = F->getParent()->getFunction("_Unwind_Resume_or_Rethrow"); URoR = F->getParent()->getFunction("_Unwind_Resume_or_Rethrow");
if (!URoR) { if (!URoR) return CleanupSelectors();
CleanupSelectors();
return false;
}
} }
if (!ExceptionValueIntrinsic) { if (!ExceptionValueIntrinsic) {
ExceptionValueIntrinsic = ExceptionValueIntrinsic =
Intrinsic::getDeclaration(F->getParent(), Intrinsic::eh_exception); Intrinsic::getDeclaration(F->getParent(), Intrinsic::eh_exception);
if (!ExceptionValueIntrinsic) { if (!ExceptionValueIntrinsic) return CleanupSelectors();
CleanupSelectors();
return false;
}
} }
bool Changed = false; bool Changed = false;
@ -337,7 +335,7 @@ bool DwarfEHPrepare::HandleURoRInvokes() {
} }
} }
CleanupSelectors(); Changed |= CleanupSelectors();
return Changed; return Changed;
} }