ppc-and-1.c

来自「Mac OS X 10.4.9 for x86 Source Code gcc」· C语言 代码 · 共 22 行

/* { dg-do compile { target powerpc64-*-* } } */
/* { dg-require-effective-target lp64 } */
/* { dg-options "-O2" } */

/* { dg-final { scan-assembler "rlwinm \[0-9\]+,\[0-9\]+,0,0,30"  } } */
/* { dg-final { scan-assembler "rlwinm \[0-9\]+,\[0-9\]+,0,29,30"  } } */
/* { dg-final { scan-assembler-not "rldicr" } } */

/* Origin:Pete Steinmetz <[e-mail]> */

/* PR 16457 - use rlwinm insn.  */

char *foo1 (char *p, unsigned int x)
{
  return p - (x & ~1);
}

char *foo2 (char *p, unsigned int x)
{
  return p - (x & 6);
}