1 files changed, 76 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/torture/pr44900.C b/gcc/testsuite/g++.dg/torture/pr44900.C
new file mode 100644
index 00000000000..5c0efcb4b4e
--- /dev/null
+++ b/gcc/testsuite/g++.dg/torture/pr44900.C
@@ -0,0 +1,76 @@
+/* { dg-do run { target i?86-*-* x86_64-*-* } } */
+/* { dg-options "-msse" } */
+/* { dg-require-effective-target sse } */
+
+typedef float __m128 __attribute__ ((__vector_size__ (16), __may_alias__));
+typedef float __v4sf __attribute__ ((__vector_size__ (16)));
+
+extern __inline __m128 __attribute__((__gnu_inline__, __always_inline__,
+__artificial__))
+_mm_set_ps (const float __Z, const float __Y, const float __X, const float __W)
+{
+  return __extension__ (__m128)(__v4sf){ __W, __X, __Y, __Z };
+}
+
+struct vec
+{
+        union {
+                __m128 v;
+                float  e[4];
+        };
+
+        static const vec & zero()
+        {
+                static const vec v = _mm_set_ps(0, 0, 0, 0);
+                return v;
+        }
+
+        vec() {}
+        vec(const __m128 & a) : v(a) {}
+
+        operator const __m128&() const { return v; }
+};
+
+struct vec2
+{
+        vec _v1;
+        vec _v2;
+
+        vec2() {}
+        vec2(const vec & a, const vec & b) : _v1(a), _v2(b) {}
+
+        static vec2 load(const float * a)
+        {
+                return vec2(
+                        __builtin_ia32_loadups(&a[0]),
+                        __builtin_ia32_loadups(&a[4]));
+        }
+
+        const vec & v1() const { return _v1; }
+        const vec & v2() const { return _v2; }
+};
+
+extern "C" void abort(void);
+
+
+inline bool operator==(const vec & a, const vec & b)
+{ return 0xf == __builtin_ia32_movmskps(__builtin_ia32_cmpeqps(a, b)); }
+
+int main( int argc, char * argv[] )
+{
+        __attribute__((aligned(16))) float data[] =
+        { 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5 };
+
+        float * p = &data[2];
+        vec2 a;
+
+        a = vec2::load(p);
+
+        vec v1 = a.v1();
+        vec v2 = a.v2();
+
+	if (v2.e[3] != 7.0)
+	  abort();
+
+        return 0;
+}