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From: "roger at nextmovesoftware dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/101642] [12 Regression] ice in decompose, at wide-int.h:984
Date: Tue, 27 Jul 2021 15:08:16 +0000 [thread overview]
Message-ID: <bug-101642-4-6iKfgTaKj1@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-101642-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101642
Roger Sayle <roger at nextmovesoftware dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |roger at nextmovesoftware dot com
--- Comment #11 from Roger Sayle <roger at nextmovesoftware dot com> ---
Hi Jakub,
Sorry for the inconvenience.
I've just come up with a near-identical fix. I think it's safe to strip the
(symmetric) bswaps in the first transformation, but I'm now paranoid enough to
explicitly convert both operands of the cmp to the same comparison type in the
second transformation.
- (cmp (bswap @0) INTEGER_CST@1)
- (cmp @0 (bswap @1))))
+ (cmp (bswap@0 @1) INTEGER_CST@2)
+ (with { tree t = TREE_TYPE(@0); }
+ (cmp (convert:t @1) (convert:t (bswap @2))))))
next prev parent reply other threads:[~2021-07-27 15:08 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-27 12:08 [Bug c/101642] New: " dcb314 at hotmail dot com
2021-07-27 12:13 ` [Bug c/101642] " dcb314 at hotmail dot com
2021-07-27 12:21 ` dcb314 at hotmail dot com
2021-07-27 12:24 ` dcb314 at hotmail dot com
2021-07-27 12:43 ` dcb314 at hotmail dot com
2021-07-27 12:43 ` jakub at gcc dot gnu.org
2021-07-27 12:50 ` [Bug middle-end/101642] [12 Regression] " rguenth at gcc dot gnu.org
2021-07-27 12:55 ` zsojka at seznam dot cz
2021-07-27 14:11 ` jakub at gcc dot gnu.org
2021-07-27 14:15 ` zsojka at seznam dot cz
2021-07-27 14:17 ` jakub at gcc dot gnu.org
2021-07-27 14:50 ` jakub at gcc dot gnu.org
2021-07-27 15:08 ` roger at nextmovesoftware dot com [this message]
2021-07-28 16:42 ` cvs-commit at gcc dot gnu.org
2021-07-28 16:46 ` jakub at gcc dot gnu.org
2021-08-02 12:31 ` cvs-commit at gcc dot gnu.org
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