i386-1.c

来自「Mac OS X 10.4.9 for x86 Source Code gcc」· C语言 代码 · 共 23 行

/* APPLE LOCAL begin mainline 2005-09-16 */
/* { dg-do run { target i?86-*-* } } */
/* { dg-options "-march=pentium4" } */

#include <xmmintrin.h>
#include <stdio.h>

int main(int argc, char** argv) {
  float a = 1.0f;
  float b = 2.0f;
  float c = 3.0f;
  float r;
  
  __m128 v = _mm_set_ps(a, b, c, 0);
  
  v = (__m128)_mm_srli_si128((__m128i)v, 4);
  _mm_store_ss(&r, v);
  if (r != 3.0f)
    abort ();
  exit (0);
}
/* APPLE LOCAL end mainline 2005-09-16 */