objc_autoreleasePoolPop() can throw if a -dealloc does.

Model it as throwing so that the exception can be caught.

This is generally not expected to have significant code-size
impact because the contents of the @autoreleasepool block
are very likely to contain a call, very likely at the same
cleanup level as the @autoreleasepool itself.

rdar://13660038

llvm-svn: 179630

1 files changed, 3 insertions, 1 deletions

diff --git a/clang/lib/CodeGen/CGObjC.cpp b/clang/lib/CodeGen/CGObjC.cpp
index 79d97b99b40..3338b336070 100644
--- a/clang/lib/CodeGen/CGObjC.cpp
+++ b/clang/lib/CodeGen/CGObjC.cpp
@@ -21,6 +21,7 @@
 #include "clang/AST/StmtObjC.h"
 #include "clang/Basic/Diagnostic.h"
 #include "llvm/ADT/STLExtras.h"
+#include "llvm/Support/CallSite.h"
 #include "llvm/IR/DataLayout.h"
 #include "llvm/IR/InlineAsm.h"
 using namespace clang;
@@ -2256,7 +2257,8 @@ void CodeGenFunction::EmitObjCAutoreleasePoolPop(llvm::Value *value) {
     fn = createARCRuntimeFunction(CGM, fnType, "objc_autoreleasePoolPop");
   }
 
-  EmitNounwindRuntimeCall(fn, value);
+  // objc_autoreleasePoolPop can throw.
+  EmitRuntimeCallOrInvoke(fn, value);
 }
 
 /// Produce the code to do an MRR version objc_autoreleasepool_push.