gcc/testsuite/gcc.dg/20080410-1.c

   1 /* { dg-do compile { target "sh-*-*" } } */
   2 /* { dg-options "-O0 -m4 -ml -fira" } */
   3 /* { dg-final { scan-assembler-not "add\tr0,r0" } } */
   4
   5 /* This test checks that chain reloads conflict.  I they don't
   6    conflict, the same hard register R0 is used for the both reloads
   7    but in this case the second reload needs an intermediate register
   8    (which is the reload register).  As the result we have the
   9    following code
  10
  11         mov     #4,r0   -- first reload
  12         mov     r14,r0  -- second reload
  13         add     r0,r0   -- second reload
  14
  15    The right code should be
  16
  17         mov     #4,r0   -- first reload
  18         mov     r14,r1  -- second reload
  19         add     r0,r1   -- second reload
  20
  21 */
  22
  23 _Complex float foo_float ();
  24
  25 void bar_float ()
  26 {
  27   __real foo_float ();
  28 }