[thirdparty/gcc.git] / gcc / testsuite / gcc.dg / combine_ashiftrt_1.c

/* Target architectures which have been found to produce the expected RTL
   (neg:DI (ge:DI ...)) when compiling for LP64.  */
/* { dg-do compile { target aarch64*-*-* arm*-*-* i?86-*-* ia64-*-* powerpc*-*-* sparc*-*-* x86_64-*-* } } */
/* { dg-require-effective-target lp64 } */
/* { dg-options "-O2 -fdump-rtl-combine-all" } */

typedef long long int int64_t;

int64_t
foo (int64_t a)
{
  return (~a) >> 63;
}

/* The combine phase will try to combine not & ashiftrt, and
   combine_simplify_rtx should transform (ashiftrt (not x) 63)
   to (not (ashiftrt x 63)) and then to (neg (ge x 0)). We look for
   the *attempt* to match this RTL pattern, regardless of whether an
   actual insn may be found on the platform.  */
/* { dg-final { scan-rtl-dump "\\(neg:DI \\(ge:DI" "combine" } } */
Commit	Line	Data
251f0b62 AL	1	/* Target architectures which have been found to produce the expected RTL
	2	(neg:DI (ge:DI ...)) when compiling for LP64. */
	3	/* { dg-do compile { target aarch64--* arm--* i?86-- ia64-- powerpc--* sparc--* x86_64-- } } */
100a5180	4	/* { dg-require-effective-target lp64 } */
ed052e94 AL	5	/* { dg-options "-O2 -fdump-rtl-combine-all" } */
	6
	7	typedef long long int int64_t;
	8
	9	int64_t
	10	foo (int64_t a)
	11	{
	12	return (~a) >> 63;
	13	}
	14
	15	/* The combine phase will try to combine not & ashiftrt, and
	16	combine_simplify_rtx should transform (ashiftrt (not x) 63)
	17	to (not (ashiftrt x 63)) and then to (neg (ge x 0)). We look for
	18	the attempt to match this RTL pattern, regardless of whether an
	19	actual insn may be found on the platform. */
	20	/* { dg-final { scan-rtl-dump "\\(neg:DI \\(ge:DI" "combine" } } */