r214829 - CodeGenObjCXX: Add a test for r214699

[David Majnemer]

Author: majnemer
Date: Mon Aug  4 19:01:15 2014
New Revision: 214829

URL: http://llvm.org/viewvc/llvm-project?rev=214829&view=rev
Log:
CodeGenObjCXX: Add a test for r214699

I forgot to add this with the changes for r214699.

Added:
    cfe/trunk/test/CodeGenObjCXX/block-id.mm

Added: cfe/trunk/test/CodeGenObjCXX/block-id.mm
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGenObjCXX/block-id.mm?rev=214829&view=auto
==============================================================================
--- cfe/trunk/test/CodeGenObjCXX/block-id.mm (added)
+++ cfe/trunk/test/CodeGenObjCXX/block-id.mm Mon Aug  4 19:01:15 2014
@@ -0,0 +1,22 @@
+// RUN: %clang_cc1 -emit-llvm -fblocks -o - -triple x86_64-apple-darwin10 -fobjc-runtime=macosx-fragile-10.5 %s | FileCheck %s
+
+// N.B.  This test verifies that two blocks which are otherwise
+//       indistinguishable receive distinct manglings.
+//       We had a bug where the first two blocks in the global block map could
+//       get the same unqualified-block mangling because the logic to handle
+//       block-ids believed it was handling Itanium-style discriminators.
+
+template<typename T>
+int tf() {
+    return T::value;
+}
+int i1 = ^int {
+    struct S { enum { value = 1 };};
+    // CHECK-DAG: @_Z2tfIZUb_E1SEiv
+    return tf<S>();
+}();
+int i2 = ^int(int p1) {
+    struct S { enum { value = 2 };};
+    // CHECK-DAG: @_Z2tfIZUb0_E1SEiv
+    return tf<S>() + p1;
+}(1);