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From: "slyfox at inbox dot ru" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/96015] [10/11 Regression] gcc-10.1.0 miscompiles Python on hppa
Date: Thu, 02 Jul 2020 17:16:57 +0000 [thread overview]
Message-ID: <bug-96015-4-DSxeMwp4W5@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-96015-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96015
--- Comment #21 from Sergei Trofimovich <slyfox at inbox dot ru> ---
(In reply to Eric Botcazou from comment #18)
> If the control flow goes through .L12:
>
> .L12:
> b .L3 ; return 0; (not interesting, fall through)
> ldi 1,%r28
>
> the return value will be 1 since ldi is in the delay slot of the branch.
>
> What happens if you compile with -O2 -fno-delayed-branch instead?
Oh, -fno-delayed-branch makes test magically pass! Attaching both bad.S and
good.S for comparison.
next prev parent reply other threads:[~2020-07-02 17:16 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-01 7:29 [Bug target/96015] New: [regression] " slyfox at inbox dot ru
2020-07-01 7:30 ` [Bug target/96015] " slyfox at inbox dot ru
2020-07-01 7:32 ` slyfox at inbox dot ru
2020-07-01 7:38 ` slyfox at inbox dot ru
2020-07-01 8:03 ` [Bug target/96015] [10/11 Regression] " rguenth at gcc dot gnu.org
2020-07-01 8:11 ` marxin at gcc dot gnu.org
2020-07-01 9:14 ` slyfox at inbox dot ru
2020-07-01 9:15 ` slyfox at inbox dot ru
2020-07-01 13:11 ` marxin at gcc dot gnu.org
2020-07-01 13:12 ` marxin at gcc dot gnu.org
2020-07-01 15:39 ` slyfox at inbox dot ru
2020-07-01 15:40 ` slyfox at inbox dot ru
2020-07-01 15:46 ` slyfox at inbox dot ru
2020-07-01 16:35 ` law at redhat dot com
2020-07-01 17:33 ` law at redhat dot com
2020-07-01 17:57 ` slyfox at inbox dot ru
2020-07-01 19:15 ` slyfox at inbox dot ru
2020-07-02 6:58 ` slyfox at inbox dot ru
2020-07-02 7:58 ` marxin at gcc dot gnu.org
2020-07-02 9:34 ` ebotcazou at gcc dot gnu.org
2020-07-02 17:15 ` slyfox at inbox dot ru
2020-07-02 17:15 ` slyfox at inbox dot ru
2020-07-02 17:16 ` slyfox at inbox dot ru [this message]
2020-07-02 20:21 ` slyfox at inbox dot ru
2020-07-02 20:50 ` slyfox at inbox dot ru
2020-07-02 21:35 ` slyfox at inbox dot ru
2020-07-02 22:36 ` slyfox at inbox dot ru
2020-07-02 23:16 ` [Bug rtl-optimization/96015] " ebotcazou at gcc dot gnu.org
2020-07-03 7:19 ` slyfox at inbox dot ru
2020-07-03 7:45 ` marxin at gcc dot gnu.org
2020-07-03 8:23 ` ebotcazou at gcc dot gnu.org
2020-07-03 9:23 ` ebotcazou at gcc dot gnu.org
2020-07-03 17:24 ` slyfox at inbox dot ru
2020-07-03 19:29 ` ebotcazou at gcc dot gnu.org
2020-07-06 20:31 ` law at redhat dot com
2020-07-07 8:09 ` ebotcazou at gcc dot gnu.org
2020-07-08 17:01 ` law at redhat dot com
2020-07-23 6:51 ` rguenth at gcc dot gnu.org
2021-01-14 9:04 ` rguenth at gcc dot gnu.org
2021-01-14 16:33 ` law at redhat dot com
2021-01-14 19:14 ` mikpelinux at gmail dot com
2021-01-15 16:54 ` ebotcazou at gcc dot gnu.org
2021-02-09 18:56 ` cvs-commit at gcc dot gnu.org
2021-02-09 18:59 ` cvs-commit at gcc dot gnu.org
2021-02-09 19:01 ` ebotcazou at gcc dot gnu.org
2021-02-09 20:21 ` dave.anglin at bell dot net
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