Fix the CC-matching logic for instance methods in the MS ABI.

Patch by Timur Iskhodzhanov!

llvm-svn: 162639

1 files changed, 47 insertions, 0 deletions

diff --git a/clang/test/CodeGenCXX/microsoft-abi-default-cc.cpp b/clang/test/CodeGenCXX/microsoft-abi-default-cc.cpp
new file mode 100644
index 00000000000..d0d25ce5efb
--- /dev/null
+++ b/clang/test/CodeGenCXX/microsoft-abi-default-cc.cpp
@@ -0,0 +1,47 @@
+// RUN: %clang_cc1 -emit-llvm %s -o - | FileCheck -check-prefix GCABI %s
+// RUN: %clang_cc1 -emit-llvm %s -o - -DMS_ABI -cxx-abi microsoft -triple=i386-pc-win32 | FileCheck -check-prefix MSABI %s
+
+#ifdef MS_ABI
+# define METHOD_CC __thiscall
+#else
+# define METHOD_CC __attribute__ ((cdecl))
+#endif
+
+// Test that it's OK to have multiple function declarations with the default CC
+// both mentioned explicitly and implied.
+void foo();
+void __cdecl foo();
+void __cdecl foo() {}
+// GCABI: define void @_Z3foov()
+// MSABI: define void @"\01?foo@@YAXXZ"
+
+void __cdecl bar();
+void bar();
+void bar() {}
+// GCABI: define void @_Z3barv()
+// MSABI: define void @"\01?bar@@YAXXZ"
+
+// Test that it's OK to mark either the method declaration or method definition
+// with a default CC explicitly.
+class A {
+public:
+  void baz();
+  void METHOD_CC qux();
+
+  void static_baz();
+  void __cdecl static_qux();
+};
+
+void METHOD_CC A::baz() {}
+// GCABI: define void @_ZN1A3bazEv
+// MSABI: define x86_thiscallcc void @"\01?baz@A@@QAEXXZ"
+void A::qux() {}
+// GCABI: define void @_ZN1A3quxEv
+// MSABI: define x86_thiscallcc void @"\01?qux@A@@QAEXXZ"
+
+void __cdecl static_baz() {}
+// GCABI: define void @_Z10static_bazv
+// MSABI: define void @"\01?static_baz@@YAXXZ"
+void static_qux() {}
+// GCABI: define void @_Z10static_quxv
+// MSABI: define void @"\01?static_qux@@YAXXZ"