NeXT/EH: When generating the rethrow code for a finally block, make sure to

chain outwards when inside a nested exception scope.
 - A real test for this is going into LLVM test-suite.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102204 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 12 insertions, 2 deletions

diff --git a/lib/CodeGen/CGObjCMac.cpp b/lib/CodeGen/CGObjCMac.cpp
index e8c0805630..421136ba47 100644
--- a/lib/CodeGen/CGObjCMac.cpp
+++ b/lib/CodeGen/CGObjCMac.cpp
@@ -5772,9 +5772,19 @@ CGObjCNonFragileABIMac::EmitTryOrSynchronizedStmt(CodeGen::CodeGenFunction &CGF,
   // Branch around the rethrow code.
   CGF.EmitBranch(FinallyEnd);
 
+  // Generate the rethrow code, taking care to use an invoke if we are in a
+  // nested exception scope.
   CGF.EmitBlock(FinallyRethrow);
-  CGF.Builder.CreateCall(ObjCTypes.getUnwindResumeOrRethrowFn(),
-                         CGF.Builder.CreateLoad(RethrowPtr));
+  if (PrevLandingPad) {
+    llvm::BasicBlock *Cont = CGF.createBasicBlock("invoke.cont");
+    CGF.Builder.CreateInvoke(ObjCTypes.getUnwindResumeOrRethrowFn(),
+                             Cont, PrevLandingPad,
+                             CGF.Builder.CreateLoad(RethrowPtr));
+    CGF.EmitBlock(Cont);
+  } else {
+    CGF.Builder.CreateCall(ObjCTypes.getUnwindResumeOrRethrowFn(),
+                           CGF.Builder.CreateLoad(RethrowPtr));
+  }
   CGF.Builder.CreateUnreachable();
 
   CGF.EmitBlock(FinallyEnd);