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-rw-r--r--clang/test/CodeGen/ext-vector-member-alignment.c27
1 files changed, 27 insertions, 0 deletions
diff --git a/clang/test/CodeGen/ext-vector-member-alignment.c b/clang/test/CodeGen/ext-vector-member-alignment.c
new file mode 100644
index 0000000..49e6997
--- /dev/null
+++ b/clang/test/CodeGen/ext-vector-member-alignment.c
@@ -0,0 +1,27 @@
+// RUN: %clang_cc1 -emit-llvm -o - %s | FileCheck %s
+
+typedef float float4 __attribute__((ext_vector_type(4)));
+
+struct __attribute__((packed, aligned(4))) struct1 {
+ float4 position;
+};
+int x = __alignof(struct struct1);
+
+float4 f(struct struct1* x) { return x->position; }
+
+void func(struct struct1* p, float *a, float *b, float c) {
+ p->position.x = c;
+ *a = p->position.y;
+ *b = p->position[0];
+ p->position[2] = c;
+ // FIXME: We should be able to come up with a more aggressive alignment
+ // estimate.
+ // CHECK: @func
+ // CHECK: load <4 x float>* {{%.*}}, align 1
+ // CHECK: store <4 x float> {{%.*}}, <4 x float>* {{%.*}}, align 1
+ // CHECK: load <4 x float>* {{%.*}}, align 1
+ // CHECK: load <4 x float>* {{%.*}}, align 1
+ // CHECK: load <4 x float>* {{%.*}}, align 1
+ // CHECK: store <4 x float> {{%.*}}, <4 x float>* {{%.*}}, align 1
+ // CHECK: ret void
+}