gcc/testsuite/gcc.target/i386/interrupt-20.c

   1 /* { dg-do compile { target ia32 } } */
   2 /* { dg-options "-O2  -mgeneral-regs-only -mno-cld -miamcu -maccumulate-outgoing-args" } */
   3
   4 struct interrupt_frame;
   5
   6 void (*callback[1])(unsigned int id, unsigned int len);
   7 unsigned int remaining;
   8
   9 void
  10 handler(int uart)
  11 {
  12   while (1) {
  13     if (remaining) {
  14       callback[uart](0, 0);
  15       break;
  16     }
  17   }
  18 }
  19
  20 int uart;
  21
  22 void
  23 __attribute__((interrupt))
  24 my_isr(struct interrupt_frame *frame)
  25 {
  26   handler(uart);
  27 }
  28
  29 /* { dg-final { scan-assembler-times "\tcld" 1 } } */