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 { target { any_fpu } } }  */
   4 /* { dg-options "-O1" } */
   5 /* { dg-final { scan-assembler "fpul" } } */
   6 /* { dg-final { scan-assembler-not "r15" } } */
   7
   8 int
   9 float_as_int (float val)
  10 {
  11   union { float f; int i; } u;
  12   u.f = val;
  13   return u.i;
  14 }
  15
  16 float
  17 int_as_float (int val)
  18 {
  19   union { float f; int i; } u;
  20   u.i = val;
  21   return u.f;
  22 }
  23