/// See if the given exception handling personality function is one that we
/// understand. If so, return a description of it; otherwise return Unknown.
-EHPersonality llvm::classifyEHPersonality(Value *Pers) {
- Function *F = dyn_cast<Function>(Pers->stripPointerCasts());
+EHPersonality llvm::classifyEHPersonality(const Value *Pers) {
+ const Function *F = dyn_cast<Function>(Pers->stripPointerCasts());
if (!F)
return EHPersonality::Unknown;
return StringSwitch<EHPersonality>(F->getName())
.Case("__gxx_personality_v0", EHPersonality::GNU_CXX)
.Case("__gcc_personality_v0", EHPersonality::GNU_C)
.Case("__objc_personality_v0", EHPersonality::GNU_ObjC)
- .Case("__except_handler3", EHPersonality::MSVC_X86SEH)
- .Case("__except_handler4", EHPersonality::MSVC_X86SEH)
+ .Case("_except_handler3", EHPersonality::MSVC_X86SEH)
+ .Case("_except_handler4", EHPersonality::MSVC_X86SEH)
.Case("__C_specific_handler", EHPersonality::MSVC_Win64SEH)
.Case("__CxxFrameHandler3", EHPersonality::MSVC_CXX)
.Default(EHPersonality::Unknown);
}
-bool llvm::isAsynchronousEHPersonality(EHPersonality Pers) {
- // The two SEH personality functions can catch asynch exceptions. We assume
- // unknown personalities don't catch asynch exceptions.
- switch (Pers) {
- case EHPersonality::MSVC_X86SEH:
- case EHPersonality::MSVC_Win64SEH:
- return true;
- default: return false;
- }
- llvm_unreachable("invalid enum");
-}
-
-bool llvm::canSimplifyInvokeNoUnwind(const InvokeInst *II) {
- const LandingPadInst *LP = II->getLandingPadInst();
- EHPersonality Personality = classifyEHPersonality(LP->getPersonalityFn());
+bool llvm::canSimplifyInvokeNoUnwind(const Function *F) {
+ EHPersonality Personality = classifyEHPersonality(F->getPersonalityFn());
// We can't simplify any invokes to nounwind functions if the personality
// function wants to catch asynch exceptions. The nounwind attribute only
// implies that the function does not throw synchronous exceptions.