[ms-inline-asm] Add field access to MS inline asm identifier lookup

Now we can parse code like this:
  struct A {
    int field;
  };
  int f(A o) {
    __asm mov eax, o.field
  }

Fixes PR19117.

llvm-svn: 246088

1 files changed, 31 insertions, 0 deletions

diff --git a/clang/test/CodeGenCXX/ms-inline-asm-fields.cpp b/clang/test/CodeGenCXX/ms-inline-asm-fields.cpp
new file mode 100644
index 00000000000..a78d511485a
--- /dev/null
+++ b/clang/test/CodeGenCXX/ms-inline-asm-fields.cpp
@@ -0,0 +1,31 @@
+// REQUIRES: x86-registered-target
+// RUN: %clang_cc1 %s -triple i386-apple-darwin10 -fasm-blocks -emit-llvm -o - | FileCheck %s
+
+struct A {
+  int a1;
+  int a2;
+  struct B {
+    int b1;
+    int b2;
+  } a3;
+};
+
+namespace asdf {
+A a_global;
+}
+
+extern "C" int test_param_field(A p) {
+// CHECK: define i32 @test_param_field(%struct.A* byval align 4 %p)
+// CHECK: getelementptr inbounds %struct.A, %struct.A* %p, i32 0, i32 0
+// CHECK: call i32 asm sideeffect inteldialect "mov eax, dword ptr $1"
+// CHECK: ret i32
+  __asm mov eax, p.a1
+}
+
+extern "C" int test_namespace_global() {
+// CHECK: define i32 @test_namespace_global()
+// CHECK: call i32 asm sideeffect inteldialect "mov eax, dword ptr $1", "{{.*}}"(i32* getelementptr inbounds (%struct.A, %struct.A* @_ZN4asdf8a_globalE, i32 0, i32 2, i32 1))
+// CHECK: ret i32
+  __asm mov eax, asdf::a_global.a3.b2
+}
+