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Add support for the Objective-C personality function to the instruction

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combining of the landingpad instruction. The ObjC personality function acts
almost identically to the C++ personality function. In particular, it uses
"null" as a "catch-all" value.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142256 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling
2011-10-17 21:20:24 +00:00
parent 6f9c28060f
commit 76f267df17
2 changed files with 57 additions and 2 deletions
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7
lib/Transforms/InstCombine/InstructionCombining.cpp
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@ -1414,7 +1414,8 @@ Instruction *InstCombiner::visitExtractValueInst(ExtractValueInst &EV) {
enum Personality_Type {
Unknown_Personality,
GNU_Ada_Personality,
GNU_CXX_Personality
GNU_CXX_Personality,
GNU_ObjC_Personality
};
/// RecognizePersonality - See if the given exception handling personality
@ -1426,7 +1427,8 @@ static Personality_Type RecognizePersonality(Value *Pers) {
return Unknown_Personality;
return StringSwitch<Personality_Type>(F->getName())
.Case("__gnat_eh_personality", GNU_Ada_Personality)
.Case("__gxx_personality_v0", GNU_CXX_Personality)
.Case("__gxx_personality_v0", GNU_CXX_Personality)
.Case("__objc_personality_v0", GNU_ObjC_Personality)
.Default(Unknown_Personality);
}
@ -1440,6 +1442,7 @@ static bool isCatchAll(Personality_Type Personality, Constant *TypeInfo) {
// match foreign exceptions (or didn't, before gcc-4.7).
return false;
case GNU_CXX_Personality:
case GNU_ObjC_Personality:
return TypeInfo->isNullValue();
}
llvm_unreachable("Unknown personality!");