gcc/testsuite/gcc.dg/sh4a-fsrra.c

   1 /* Verify that we generate single-precision square root reciprocal
   2    approximate (fsrra) in fast math mode.  */
   3 /* { dg-do compile { target "sh*-*-*" } } */
   4 /* { dg-options "-O -ffast-math" } */
   5 /* { dg-final { scan-assembler "\tfsrra\t" } } */
   6
   7 #if defined __SH4A__ && ! defined __SH4_NOFPU__
   8 #include <math.h>
   9
  10 float test(float f) { return 1 / sqrtf(f); }
  11 #else
  12 asm ("fsrra\t");
  13 #endif