gcc/testsuite/gcc.c-torture/compile/20040101-1.c

   1 /* { dg-skip-if "not enough registers" { pdp11-*-* } { "-O[12s]" } { "" } } */
   2
   3 typedef unsigned short uint16_t;
   4 typedef unsigned int uint32_t;
   5
   6 #define CF (1<<0)
   7 #define PF (1<<2)
   8 #define AF (1<<4)
   9 #define ZF (1<<6)
  10 #define SF (1<<7)
  11 #define OF (1<<11)
  12
  13 #define EFLAGS_BITS (CF|PF|AF|ZF|SF|OF)
  14
  15 void test16(uint16_t x, uint32_t eflags)
  16 {
  17         uint16_t bsr_result;
  18         uint32_t bsr_eflags;
  19         uint16_t bsf_result;
  20         uint32_t bsf_eflags;
  21
  22         __asm volatile(""
  23                 : "=&r" (bsr_result), "=&r" (bsr_eflags)
  24                 : "r" (x), "i" (~EFLAGS_BITS), "r" (eflags));
  25         __asm volatile(""
  26                 : "=&r" (bsf_result), "=&r" (bsf_eflags)
  27                 : "r" (x), "i" (~EFLAGS_BITS), "r" (eflags));
  28         printf("%08x %04x bsrw %02x %08x bsfw %02x %08x\n",
  29                 x, eflags, bsr_result, bsr_eflags, bsf_result, bsf_eflags);
  30 }