On Mon, 6 Nov 2023, Tamar Christina wrote:
> Hi All,
>
> various optimizations in match.pd only happened on COPYSIGN in lock step
> which means they exclude IFN_COPYSIGN. COPYSIGN however is restricted to only
> the C99 builtins and so doesn't work for vectors.
>
> The patch expands these optimizations to work as nested iters.
>
> This is needed for the second patch which will add the testcase.
>
> Bootstrapped Regtested on aarch64-none-linux-gnu and no issues.
>
> Ok for master?
OK.
> Thanks,
> Tamar
>
> gcc/ChangeLog:
>
> PR tree-optimization/109154
> * match.pd: expand existing copysign optimizations.
>
> --- inline copy of patch --
> diff --git a/gcc/match.pd b/gcc/match.pd
> index
> 7d651a6582d169793cca4f9a70e334dd80014d92..db95931df0672cf4ef08cca36085c3aa6831519e
> 100644
> --- a/gcc/match.pd
> +++ b/gcc/match.pd
> @@ -1074,37 +1074,37 @@ DEFINE_INT_AND_FLOAT_ROUND_FN (RINT)
>
> /* cos(copysign(x, y)) -> cos(x). Similarly for cosh. */
> (for coss (COS COSH)
> - copysigns (COPYSIGN)
> - (simplify
> - (coss (copysigns @0 @1))
> - (coss @0)))
> + (for copysigns (COPYSIGN)
> + (simplify
> + (coss (copysigns @0 @1))
> + (coss @0))))
>
> /* pow(copysign(x, y), z) -> pow(x, z) if z is an even integer. */
> (for pows (POW)
> - copysigns (COPYSIGN)
> - (simplify
> - (pows (copysigns @0 @2) REAL_CST@1)
> - (with { HOST_WIDE_INT n; }
> - (if (real_isinteger (&TREE_REAL_CST (@1), &n) && (n & 1) == 0)
> - (pows @0 @1)))))
> + (for copysigns (COPYSIGN)
> + (simplify
> + (pows (copysigns @0 @2) REAL_CST@1)
> + (with { HOST_WIDE_INT n; }
> + (if (real_isinteger (&TREE_REAL_CST (@1), &n) && (n & 1) == 0)
> + (pows @0 @1))))))
> /* Likewise for powi. */
> (for pows (POWI)
> - copysigns (COPYSIGN)
> - (simplify
> - (pows (copysigns @0 @2) INTEGER_CST@1)
> - (if ((wi::to_wide (@1) & 1) == 0)
> - (pows @0 @1))))
> + (for copysigns (COPYSIGN)
> + (simplify
> + (pows (copysigns @0 @2) INTEGER_CST@1)
> + (if ((wi::to_wide (@1) & 1) == 0)
> + (pows @0 @1)))))
>
> (for hypots (HYPOT)
> - copysigns (COPYSIGN)
> - /* hypot(copysign(x, y), z) -> hypot(x, z). */
> - (simplify
> - (hypots (copysigns @0 @1) @2)
> - (hypots @0 @2))
> - /* hypot(x, copysign(y, z)) -> hypot(x, y). */
> - (simplify
> - (hypots @0 (copysigns @1 @2))
> - (hypots @0 @1)))
> + (for copysigns (COPYSIGN)
> + /* hypot(copysign(x, y), z) -> hypot(x, z). */
> + (simplify
> + (hypots (copysigns @0 @1) @2)
> + (hypots @0 @2))
> + /* hypot(x, copysign(y, z)) -> hypot(x, y). */
> + (simplify
> + (hypots @0 (copysigns @1 @2))
> + (hypots @0 @1))))
>
> /* copysign(x, CST) -> [-]abs (x). */
> (for copysigns (COPYSIGN_ALL)
>
>
>
>
>
--
Richard Biener <rguent...@suse.de>
SUSE Software Solutions Germany GmbH,
Frankenstrasse 146, 90461 Nuernberg, Germany;
GF: Ivo Totev, Andrew McDonald, Werner Knoblich; (HRB 36809, AG Nuernberg)
