gcc/testsuite/gcc.target/sh/fpul-usage-1.c

   1 /* Check that the FPUL register is used when reading a float as an int and
   2    vice versa, as opposed to pushing and popping the values over the stack.  */
   3 /* { dg-do compile }  */
   4 /* { dg-options "-O1" } */
   5 /* { dg-skip-if "" { "sh*-*-*" } { "-m1" "-m2" "-m4al" "*nofpu" "-m4-340*" "-m4-400*" "-m4-500*" "-m5*" } { "" } }  */
   6 /* { dg-final { scan-assembler "fpul" } } */
   7 /* { dg-final { scan-assembler-not "r15" } } */
   8
   9 int
  10 float_as_int (float val)
  11 {
  12   union { float f; int i; } u;
  13   u.f = val;
  14   return u.i;
  15 }
  16
  17 float
  18 int_as_float (int val)
  19 {
  20   union { float f; int i; } u;
  21   u.i = val;
  22   return u.f;
  23 }
  24