Move EH personality type classification to Analysis/LibCallSemantics.h

Summary:
Also add enum types for __C_specific_handler and _CxxFrameHandler3 for
which we know a few things.

Reviewers: majnemer

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D7214

llvm-svn: 227284

1 files changed, 16 insertions, 0 deletions

diff --git a/llvm/lib/Analysis/LibCallSemantics.cpp b/llvm/lib/Analysis/LibCallSemantics.cpp
index 23639e71232..3a345c45d07 100644
--- a/llvm/lib/Analysis/LibCallSemantics.cpp
+++ b/llvm/lib/Analysis/LibCallSemantics.cpp
@@ -15,6 +15,7 @@
 
 #include "llvm/Analysis/LibCallSemantics.h"
 #include "llvm/ADT/StringMap.h"
+#include "llvm/ADT/StringSwitch.h"
 #include "llvm/IR/Function.h"
 using namespace llvm;
 
@@ -61,3 +62,18 @@ LibCallInfo::getFunctionInfo(const Function *F) const {
   return Map->lookup(F->getName());
 }
 
+/// 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());
+  if (!F)
+    return EHPersonality::Unknown;
+  return StringSwitch<EHPersonality>(F->getName())
+    .Case("__gnat_eh_personality", EHPersonality::GNU_Ada)
+    .Case("__gxx_personality_v0",  EHPersonality::GNU_CXX)
+    .Case("__gcc_personality_v0",  EHPersonality::GNU_C)
+    .Case("__objc_personality_v0", EHPersonality::GNU_ObjC)
+    .Case("__C_specific_handler",  EHPersonality::MSVC_Win64SEH)
+    .Case("__CxxFrameHandler3",    EHPersonality::MSVC_CXX)
+    .Default(EHPersonality::Unknown);
+}