From: Eric Botcazou <ebotcazou@adacore.com>
To: Richard Biener <richard.guenther@gmail.com>
Cc: gcc-patches@gcc.gnu.org
Subject: Re: [patch] Perform anonymous constant propagation during inlining
Date: Fri, 01 May 2015 16:44:00 -0000 [thread overview]
Message-ID: <3882455.jixBbSixVe@polaris> (raw)
In-Reply-To: <0ADD2F35-3576-4FDE-8473-17ADED030B92@gmail.com>
> Yeah, I think that's a way better place for the hack.
OK, how aggressive then? We could as well do the substitution for all copies:
/* For EXPAND_INITIALIZER try harder to get something simpler.
Otherwise, substitute copies on the RHS, this can propagate
constants at -O0 and thus simplify arithmetic operations. */
if (g == NULL
&& !SSA_NAME_IS_DEFAULT_DEF (exp)
&& (optimize || DECL_IGNORED_P (SSA_NAME_VAR (exp)))
&& (modifier == EXPAND_INITIALIZER
|| (modifier != EXPAND_WRITE
&& gimple_assign_copy_p (SSA_NAME_DEF_STMT (exp))))
&& stmt_is_replaceable_p (SSA_NAME_DEF_STMT (exp)))
g = SSA_NAME_DEF_STMT (exp);
--
Eric Botcazou
next prev parent reply other threads:[~2015-05-01 16:44 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-29 10:23 Eric Botcazou
2015-04-29 12:06 ` Richard Biener
2015-05-01 10:29 ` Eric Botcazou
2015-05-01 14:19 ` Richard Biener
2015-05-01 16:44 ` Eric Botcazou [this message]
2015-05-01 18:11 ` Eric Botcazou
2015-05-04 8:46 ` Richard Biener
2015-05-04 9:32 ` Eric Botcazou
2015-05-04 21:40 ` Eric Botcazou
2015-05-05 5:43 ` Richard Biener
2015-05-11 14:07 ` Eric Botcazou
2015-05-12 8:46 ` Richard Biener
2015-04-29 13:29 ` Jan Hubicka
2015-04-29 13:50 ` Richard Biener
2015-04-29 14:31 ` Jan Hubicka
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