From: Richard Biener <rguenther@suse.de>
To: Tom de Vries <Tom_deVries@mentor.com>
Cc: Jakub Jelinek <jakub@redhat.com>,
GCC Patches <gcc-patches@gcc.gnu.org>,
Michael Matz <matz@suse.de>
Subject: Re: [PATCH][4/5] Handle internal_fn in operand_equal_p
Date: Fri, 20 Feb 2015 11:59:00 -0000 [thread overview]
Message-ID: <alpine.LSU.2.11.1502201253500.28824@zhemvz.fhfr.qr> (raw)
In-Reply-To: <54E5FB07.1010307@mentor.com>
On Thu, 19 Feb 2015, Tom de Vries wrote:
> On 19-02-15 14:07, Richard Biener wrote:
> > On Thu, 19 Feb 2015, Jakub Jelinek wrote:
> >
> > > On Thu, Feb 19, 2015 at 01:44:46PM +0100, Richard Biener wrote:
> > > > I'd call it a bug though, and we do have internal fns in
> > > > generic already thus the issue is latent (with ubsan at least).
> > > >
> > > > Which means ok for trunk now.
> > >
> > > But the patch should better handle the internal calls right.
> > > I.e. return 0 only if only one, not both CALL_EXPR_FNs are NULL,
> > > or if both are NULL and CALL_EXPR_IFN is different, or if
> > > call_expr_nargs is different.
> >
> > The question is whether generic call handling works (esp. call_expr_flags
> > works correctly - the argument compare should work fine already).
> >
> > Tom - care to update the patch?
> >
>
> I agree, the current patch is conservative and we can do better.
> But I think it's wiser to do that as a stage1 follow-up, and commit this
> conservative patch for stage4. Is that acceptable?
Then just defer it for stage1 completely. If a problem pops up with
GCC 5 we can backport the proper patch together with a testcase.
Richard.
next prev parent reply other threads:[~2015-02-20 11:54 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-19 10:48 [stage1] Postpone expanding va_arg until pass_stdarg Tom de Vries
2015-02-19 10:51 ` [PATCH][1/5] Disable lang_hooks.gimplify_expr in free_lang_data Tom de Vries
2015-02-19 12:41 ` Richard Biener
2015-02-19 10:59 ` [PATCH][2/5] Add gimple_find_sub_bbs Tom de Vries
2015-02-19 12:41 ` Richard Biener
2015-02-19 12:51 ` Jakub Jelinek
2015-02-19 13:03 ` Marek Polacek
2015-02-19 13:31 ` Richard Biener
2015-02-19 13:07 ` Richard Biener
2015-02-22 12:47 ` Tom de Vries
2015-02-19 11:06 ` [PATCH][3/5] Factor optimize_va_list_gpr_fpr_size out of pass_stdarg::execute Tom de Vries
2015-02-19 12:44 ` Richard Biener
2015-02-19 11:37 ` [PATCH][4/5] Handle internal_fn in operand_equal_p Tom de Vries
2015-02-19 12:49 ` Richard Biener
2015-02-19 12:59 ` Jakub Jelinek
2015-02-19 13:09 ` Richard Biener
2015-02-19 15:31 ` Tom de Vries
2015-02-20 11:59 ` Richard Biener [this message]
2015-02-22 13:13 ` Tom de Vries
2015-02-23 10:19 ` Richard Biener
2015-02-24 13:09 ` Fwd: " Tom de Vries
2015-02-19 12:08 ` [PATCH][5/5] Postpone expanding va_arg until pass_stdarg Tom de Vries
2015-02-19 13:05 ` Richard Biener
2015-02-22 13:24 ` Tom de Vries
2015-02-23 9:03 ` Michael Matz
2015-02-23 10:36 ` Tom de Vries
2015-02-24 8:26 ` Tom de Vries
2015-03-10 15:31 ` [PING] [PATCH][5b/5] Avoid running expand_ifn_va_arg_1 in functions without va_arg Tom de Vries
2015-04-16 8:50 ` [PING^2] " Tom de Vries
2015-04-16 8:56 ` Richard Biener
2015-03-10 15:31 ` [PING] [PATCH][5a/5] Postpone expanding va_arg until pass_stdarg Tom de Vries
2015-04-16 8:50 ` [PING^2] " Tom de Vries
2015-04-16 8:55 ` Richard Biener
2015-04-21 5:32 ` Bin.Cheng
2015-06-09 11:04 ` Alan Lawrence
2015-06-09 11:07 ` Richard Biener
2015-06-09 13:03 ` Tom de Vries
2015-06-09 13:07 ` Richard Biener
2015-06-09 13:30 ` Alan Lawrence
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