gcc/testsuite/gcc.dg/pragma-isr-nosave_low_regs.c

   1 /* { dg-do compile { target sh-*-* sh[1234ble]*-*-*} } */
   2 /* { dg-options "-O" } */
   3 extern void foo ();
   4 #pragma interrupt
   5 #pragma nosave_low_regs
   6 void
   7 isr()
   8 {
   9   foo ();
  10 }
  11
  12 /* { dg-final { scan-assembler-times "rte" 1} } */
  13 /* A call will clobber all call-saved registers, but because of
  14    #pragma nosave_low_regs, r0..r7 need not be saved/restored.
  15    One of these registers will also do fine to hold the function address.
  16    Call-saved registers r8..r13 also don't need to be restored.  */
  17 /* { dg-final { scan-assembler-not "\[^f\]r\[0-9\]\[ \t\]*," } } */
  18 /* { dg-final { scan-assembler-not "\[^f\]r\[89\]" } } */
  19 /* { dg-final { scan-assembler-not "\[^f\]r1\[,0-3\]" } } */
  20 /* { dg-final { scan-assembler-times "macl" 2} } */