diff options
Diffstat (limited to 'clang/test/CodeGenCXX/ms-union-member-ref.cpp')
| -rw-r--r-- | clang/test/CodeGenCXX/ms-union-member-ref.cpp | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/clang/test/CodeGenCXX/ms-union-member-ref.cpp b/clang/test/CodeGenCXX/ms-union-member-ref.cpp new file mode 100644 index 00000000000..658cfba9378 --- /dev/null +++ b/clang/test/CodeGenCXX/ms-union-member-ref.cpp @@ -0,0 +1,34 @@ +// RUN: %clang_cc1 -fms-extensions %s -emit-llvm -o- | FileCheck %s + +union A { + int *&ref; + int **ptr; +}; + +int *f1(A *a) { + return a->ref; +} +// CHECK-LABEL: define {{.*}}i32* @_Z2f1P1A(%union.A* %a) +// CHECK: [[REF:%[^[:space:]]+]] = bitcast %union.A* %{{.*}} to i32*** +// CHECK: [[IPP:%[^[:space:]]+]] = load i32**, i32*** [[REF]] +// CHECK: [[IP:%[^[:space:]]+]] = load i32*, i32** [[IPP]] +// CHECK: ret i32* [[IP]] + +void f2(A *a) { + *a->ref = 1; +} +// CHECK-LABEL: define {{.*}}void @_Z2f2P1A(%union.A* %a) +// CHECK: [[REF:%[^[:space:]]+]] = bitcast %union.A* %{{.*}} to i32*** +// CHECK: [[IPP:%[^[:space:]]+]] = load i32**, i32*** [[REF]] +// CHECK: [[IP:%[^[:space:]]+]] = load i32*, i32** [[IPP]] +// CHECK: store i32 1, i32* [[IP]] + +bool f3(A *a, int *b) { + return a->ref != b; +} +// CHECK-LABEL: define {{.*}}i1 @_Z2f3P1APi(%union.A* %a, i32* %b) +// CHECK: [[REF:%[^[:space:]]+]] = bitcast %union.A* %{{.*}} to i32*** +// CHECK: [[IPP:%[^[:space:]]+]] = load i32**, i32*** [[REF]] +// CHECK: [[IP:%[^[:space:]]+]] = load i32*, i32** [[IPP]] +// CHECK: [[IP2:%[^[:space:]]+]] = load i32*, i32** %b.addr +// CHECK: icmp ne i32* [[IP]], [[IP2]] |
