From: Alan Modra <amodra@gmail.com>
To: Andreas Schwab <schwab@linux-m68k.org>
Cc: Bernd Schmidt <bschmidt@redhat.com>, gcc-patches@gcc.gnu.org
Subject: Re: [PATCH] PR69195, Reload confused by invalid reg equivs
Date: Fri, 11 Mar 2016 23:13:00 -0000 [thread overview]
Message-ID: <20160311231350.GC16812@bubble.grove.modra.org> (raw)
In-Reply-To: <20160311221624.GB16812@bubble.grove.modra.org>
The underlying problem happens somewhere in tree-ssa-dse.c. So we get
an indirect jump to a random location instead of a jump to 0.
pr58164.c.035t.mergephi1
;; Function foo (foo, funcdef_no=0, decl_uid=1389, cgraph_uid=0, symbol_order=0)
foo ()
{
int x;
<bb 2>:
x = 0;
goto &x;
}
pr58164.c.036t.dse1
;; Function foo (foo, funcdef_no=0, decl_uid=1389, cgraph_uid=0, symbol_order=0)
Deleted dead store 'x = 0;
'
foo ()
{
int x;
<bb 2>:
goto &x;
}
--
Alan Modra
Australia Development Lab, IBM
next prev parent reply other threads:[~2016-03-11 23:13 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-04 14:54 [RFC] " Alan Modra
2016-03-04 17:40 ` Bernd Schmidt
2016-03-07 14:47 ` Alan Modra
2016-03-10 9:18 ` [PATCH] " Alan Modra
2016-03-10 9:48 ` Bernd Schmidt
2016-03-11 20:40 ` Andreas Schwab
2016-03-11 22:16 ` Alan Modra
2016-03-11 23:13 ` Alan Modra [this message]
2016-03-12 7:58 ` Jakub Jelinek
2016-03-12 8:26 ` Jeff Law
2016-03-12 9:07 ` Alan Modra
2016-03-12 9:29 ` Jakub Jelinek
2016-03-12 11:10 ` Richard Biener
2016-03-12 17:07 ` Jeff Law
2016-03-14 9:56 ` Richard Biener
2016-03-14 19:00 ` Jeff Law
2016-03-15 2:27 ` Alan Modra
2016-03-15 12:17 ` Bernd Schmidt
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