| /* { dg-do run } */ |
| /* { dg-options "-O2 -ffast-math -msse -mfpmath=sse -mrecip" } */ |
| /* { dg-require-effective-target sse } */ |
| #include "sse-check.h" |
| |
| extern float sqrtf (float); |
| float __attribute__((noinline)) broken (float a, float b) |
| { |
| return sqrtf (a / b); |
| } |
| |
| extern void abort (void); |
| extern void *memcpy (void *, const void *, __SIZE_TYPE__); |
| static void |
| sse_test (void) |
| { |
| int i; |
| float x; |
| char buf[sizeof (float)]; |
| x = broken (0.0f, 10000.0f); |
| /* A convoluted way to check for the correct result (zero) for all |
| floating point formats. |
| We can't use ==, !=, or range checks, or isinf/isnan/isunordered, |
| because all of these will not do the right thing under -ffast-math, |
| as they can assume that neither nan nor inf are returned. */ |
| memcpy (&buf, &x, sizeof (float)); |
| for (i = 0; i < sizeof (float); i++) |
| if (buf[i] != 0) |
| abort (); |
| } |
