Vendor import of clang trunk r154661:

http://llvm.org/svn/llvm-project/cfe/trunk@r154661

1 files changed, 27 insertions, 0 deletions

diff --git a/test/CodeGen/ext-vector-member-alignment.c b/test/CodeGen/ext-vector-member-alignment.c
new file mode 100644
index 0000000..49e6997
--- /dev/null
+++ b/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
+}