1/* { dg-do run } */ 2/* { dg-require-effective-target lp64 } */ 3/* { dg-require-effective-target sse4 } */ 4/* { dg-options "-O2 -msse4.1" } */ 5 6#ifndef CHECK_H 7#define CHECK_H "sse4_1-check.h" 8#endif 9 10#ifndef TEST 11#define TEST sse4_1_test 12#endif 13 14#include CHECK_H 15 16#include <smmintrin.h> 17#include <string.h> 18 19typedef long T __attribute__((may_alias)); 20struct S { __m128i d; }; 21 22__m128i 23__attribute__((noinline)) 24foo (__m128i y, long x) 25{ 26 struct S s; 27 28 s.d = y; 29 ((T *) &s.d)[1] = x; 30 return s.d; 31} 32 33static void 34TEST (void) 35{ 36 union 37 { 38 __m128i x; 39 unsigned int i[4]; 40 unsigned long l[2]; 41 } res, val, tmp; 42 unsigned long ins[4] = { 3, 4, 5, 6 }; 43 44 val.i[0] = 0x35251505; 45 val.i[1] = 0x75655545; 46 val.i[2] = 0xB5A59585; 47 val.i[3] = 0xF5E5D5C5; 48 49 res.x = foo (val.x, ins[3]); 50 51 tmp.x = val.x; 52 tmp.l[1] = ins[3]; 53 if (memcmp (&tmp, &res, sizeof (tmp))) 54 abort (); 55} 56