gcc/testsuite/gcc.target/i386/20020523.c

   1 /* PR target/6753
   2    This testcase was miscompiled because sse_mov?fcc_const0*
   3    patterns were missing earlyclobber.  */
   4
   5 /* { dg-do run } */
   6 /* { dg-options "-O2 -msse -mfpmath=sse -ffast-math" } */
   7 /* { dg-require-effective-target sse } */
   8
   9 #include "sse-check.h"
  10
  11 float one = 1.f;
  12
  13 void bar (float f)
  14 {
  15   if (__builtin_memcmp (&one, &f, sizeof (float)))
  16     abort ();
  17 }
  18
  19 float foo (void)
  20 {
  21   return 1.f;
  22 }
  23
  24 typedef struct
  25 {
  26   float t;
  27 } T;
  28
  29 static void
  30 sse_test (void)
  31 {
  32   int i;
  33   T x[1];
  34
  35   for (i = 0; i < 1; i++)
  36     {
  37       x[i].t = foo ();
  38       x[i].t = 0.f > x[i].t ? 0.f : x[i].t;
  39       bar (x[i].t);
  40     }
  41 }