gcc/testsuite/gcc.target/sh/sh2a-bclr.c

/* Testcase to check generation of a SH2A specific instruction
   'BCLR #imm3,Rn'.  */
/* { dg-do compile { target { sh2a } } }  */
/* { dg-options "-O1" }  */
/* { dg-final { scan-assembler "bclr"} }  */

struct a
{
  char a, b;
  short c;
};

/* This function generates the instruction "BCLR #imm3,Rn" only
   on using optimization option "-O1" and above.  */

int
a2 ()
{
  volatile int j;
  volatile static struct a x = {1, 66, ~1}, y = {1, 2, ~2};

  if (j > 1)
    return (x.a == y.a && (x.b & ~1) == y.b);
  if (j > 2)
    return (x.a == y.a && (x.b & ~2) == y.b);
  if (j > 3)
    return (x.a == y.a && (x.b & ~4) == y.b);
  if (j > 4)
    return (x.a == y.a && (x.b & ~8) == y.b);
  if (j > 5)
    return (x.a == y.a && (x.b & ~16) == y.b);
  if (j > 6)
    return (x.a == y.a && (x.b & ~32) == y.b);
  if (j > 7)
    return (x.a == y.a && (x.b & ~64) == y.b);
  if (j > 8)
    return (x.a == y.a && (x.b & ~128) == y.b);
}

int
main ()
{
  volatile unsigned char x;

  x &= 0xFE;
  x &= 0xFD;
  x &= 0xFB;
  x &= 0xF7;
  x &= 0xEF;
  x &= 0xDF;
  x &= 0xBF;
  x &= 0x7F;

  if (!a2 ())
    return 0;
}