On 9/16/20 1:34 PM, Patrick Palka wrote:
On Thu, 13 Aug 2020, Jason Merrill wrote:
On 8/13/20 11:21 AM, Patrick Palka wrote:
On Mon, 10 Aug 2020, Jason Merrill wrote:
On 8/10/20 2:18 PM, Patrick Palka wrote:
On Mon, 10 Aug 2020, Patrick Palka wrote:
In the below testcase, semantic analysi
This introduces an ICE building the glibc testsuite for alpha (bisected),
s390 and sparc (symptoms appear the same, not bisected to confirm the
exact revision). See bug 97078.
--
Joseph S. Myers
jos...@codesourcery.com
On Wed, 16 Sep 2020, Jason Merrill wrote:
> On 9/16/20 1:34 PM, Patrick Palka wrote:
> > On Thu, 13 Aug 2020, Jason Merrill wrote:
> >
> > > On 8/13/20 11:21 AM, Patrick Palka wrote:
> > > > On Mon, 10 Aug 2020, Jason Merrill wrote:
> > > >
> > > > > On 8/10/20 2:18 PM, Patrick Palka wrote:
> >
Seen whilst debugging another issue, where the analyzer was assuming
conservatively that a call to getchar could clobber a global.
This is handled for most of the other stdio functions by the list
in sm-file.cc
Successfully bootstrapped & regrtested on x86_64-pc-linux-gnu.
Pushed to master as e09
I found this useful when debugging.
Successfully bootstrapped & regrtested on x86_64-pc-linux-gnu.
Pushed to master as 6dd96e24ea3cb9919fedd4da35fbfd36ed98b0ea.
gcc/analyzer/ChangeLog:
* engine.cc (exploded_graph::get_or_create_node): Show the
program point when issuing -Wanalyzer
Avoid some future copy-and-paste by introducing a function.
Successfully bootstrapped & regrtested on x86_64-pc-linux-gnu.
Pushed to master as b9b5fc0c2175b34131d9fd0805b1b307f754f4f0.
gcc/analyzer/ChangeLog:
* engine.cc
(exploded_graph::process_node) :
Simplify by using p
Prior to this patch the analyzer worklist considered only one node or
two nodes at a time, processing and/or merging state individually or
pairwise.
This could lead to explosions of merger nodes at CFG join points,
especially after switch statements, which could have large numbers
of in-edges, and
Successfully bootstrapped & regrtested on x86_64-pc-linux-gnu.
Pushed to master as d2c4d5199cf277becc1f377536973815d1c9519c.
gcc/analyzer/ChangeLog:
* engine.cc (supernode_cluster::dump_dot): Show the SCC id
in the per-supernode clusters in FILENAME.eg.dot output.
(exploded
Hi Honza – some input would be really helpful!
Hi Jakub – updated version below.
On 9/16/20 12:36 PM, Jakub Jelinek wrote:
I think you want Honza on this primarily, I'm always lost
in the cgraph alias code.
(Likewise as this thread shows)
+ while (node->alias_target)
+node = symt
Debugging the state explosion of the very large switch statement in
gcc.dg/analyzer/pr96653.c showed that the worklist was failing to
order the exploded nodes correctly; the in-edges at the join point
after the switch were not getting processed together, but were instead
being rocessed in smaller b
Hi!
This took a while to digest, sorry.
On Tue, Sep 15, 2020 at 10:49:42AM +0930, Alan Modra wrote:
> + 1) Calls from places like optabs.c:avoid_expensive_constant will
> + come here with OUTER_CODE set to an operation such as AND with X
> + being a CONST_INT or other CONSTANT_P type. This
On Tue, Sep 15, 2020 at 10:49:43AM +0930, Alan Modra wrote:
> This small patch to rs6000_rtx_const considerably improves code
(_costs)
> generated for large constants in 64-bit code, teaching gcc that it is
> better to load a constant from memory than to generate a sequence of
> up to five depend
Hi!
On Tue, Sep 15, 2020 at 10:49:44AM +0930, Alan Modra wrote:
> * config/rs6000/rs6000.c (rs6000_rtx_costs): Cost IOR.
> case IOR:
> - /* FIXME */
>*total = COSTS_N_INSNS (1);
> - return true;
Hey this was okay for over five years :-)
> + left = XEXP (x, 0);
On Wed, Sep 16, 2020 at 8:54 AM Alex Coplan wrote:
>
> On 16/09/2020 07:26, Ian Lance Taylor wrote:
> > On Wed, Sep 16, 2020, 4:03 AM Alex Coplan wrote:
> >
> > > Hi Ian,
> > >
> > > On 14/09/2020 14:12, Ian Lance Taylor via Gcc-patches wrote:
> > > > This patch to libbacktrace adds support for M
On 9/16/20 6:11 PM, Patrick Palka wrote:
On Wed, 16 Sep 2020, Jason Merrill wrote:
On 9/16/20 1:34 PM, Patrick Palka wrote:
On Thu, 13 Aug 2020, Jason Merrill wrote:
On 8/13/20 11:21 AM, Patrick Palka wrote:
On Mon, 10 Aug 2020, Jason Merrill wrote:
On 8/10/20 2:18 PM, Patrick Palka wrote
Thanks.
On Wed, Sep 16, 2020 at 8:54 PM Uros Bizjak wrote:
>
> > gcc/ChangeLog
> >
> > PR target/96861
> > * config/i386/x86-tune-costs.h (skylake_cost): increase rtx
> > cost of sse_to_integer from 2 to 6.
> >
> > gcc/testsuite
> >
> > * gcc.target/i386/pr95021-3.
Thanks!
On Wed, Sep 16, 2020 at 8:57 PM Uros Bizjak wrote:
>
> > gcc/ChangeLog
> >
> > * common/config/i386/i386-common.c
> > (OPTION_MASK_ISA_AVX_UNSET): Remove OPTION_MASK_ISA_XSAVE_UNSET.
> > (OPTION_MASK_ISA_XSAVE_UNSET): Add OPTION_MASK_ISA_AVX_UNSET.
> >
> > gcc/test
On 9/15/20 1:47 PM, Martin Sebor wrote:
> Overflowing the size of a dynamic allocation (e.g., malloc or VLA)
> can lead to a subsequent buffer overflow corrupting the heap or
> stack. The attached patch diagnoses a subset of these cases where
> the overflow/wraparound is still detectable.
>
> Bes
On Wed, Sep 16, 2020 at 07:02:06PM -0500, Segher Boessenkool wrote:
> Hi!
>
> On Tue, Sep 15, 2020 at 10:49:44AM +0930, Alan Modra wrote:
> > * config/rs6000/rs6000.c (rs6000_rtx_costs): Cost IOR.
>
> > case IOR:
> > - /* FIXME */
> >*total = COSTS_N_INSNS (1);
> > - re
On 9/15/20 1:00 PM, Martin Sebor via Gcc-patches wrote:
> The -Wuninitialized/-Wmaybe-uninitialized enhancement to warn when
> a pointer or reference to an uninitialized object is passed to
> a const-qualified function argument tries to avoid triggering for
> objects of empty types. However, the
On 9/15/20 11:06 AM, Martin Sebor via Gcc-patches wrote:
> The attached patch updates the manual to mention that Wuninitialized
> and -Wmaybe-uninitialized are issued for both auto and allocated
> objects, as well as for passing pointers to uninitialized objects
> to const-qualified parameters. B
On 9/11/20 4:41 PM, Sergei Trofimovich via Gcc-patches wrote:
> From: Sergei Trofimovich
>
> Before the change 'man gcc' rendered "SOURCE_DATE_EPOCH" section as:
> ... the output of @command{date +%s} on GNU/Linux ...
> After the change it renders as:
> ... the output of "date +%s" on GNU
On 9/7/20 6:13 PM, JonY via Gcc-patches wrote:
> On 9/4/20 12:47 PM, Martin Storsjö wrote:
>> Hi,
>>
>> On Fri, 4 Sep 2020, Jakub Jelinek wrote:
>>
>>> On Tue, Sep 01, 2020 at 04:01:42PM +0300, Martin Storsjö wrote:
This fixes compilation of codepaths for dos-like filesystems
with Clang
On 9/15/20 9:20 PM, Hongtao Liu via Gcc-patches wrote:
> Hi:
> Rtx cost of sse_to_integer would be used by pass_stv as a
> measurement for the scalar-to-vector transformation. As
> https://gcc.gnu.org/pipermail/gcc-patches/2019-August/528839.html
> indicates, movement between sse regs and gprs s
On 9/15/20 8:32 AM, H.J. Lu via Gcc-patches wrote:
> commit e95395926a84a2406faefe0995295d199d595440
> Author: Uros Bizjak
> Date: Thu Jun 18 20:12:48 2020 +0200
>
> i386: Fix mode of ZERO_EXTRACT RTXes, remove ext_register_operand
> predicate.
>
> caused
>
> FAIL: gcc.target/i386/pr78904-
On 9/11/20 6:21 AM, Christophe Lyon via Gcc-patches wrote:
> pz_tmp_base and pz_tmp_dot are always set, but used only when
> _PC_NAME_MAX is defined.
>
> This patch moves their declaration and definition undef #ifdef
> _PC_NAME_MAX to avoid this warning.
>
> 2020-09-11 Torbjörn SVENSSON
>
On Wed, Aug 19, 2020 at 6:25 AM H.J. Lu wrote:
>
> On Wed, Jul 15, 2020 at 10:42:27AM -0700, H.J. Lu wrote:
> > Expand strncmp to "repz cmpsb" only with -minline-all-stringops since
> > "repz cmpsb" can be much slower than strncmp function implemented with
> > vector instructions, see
> >
> > http
On Wed, Aug 19, 2020 at 6:09 AM H.J. Lu wrote:
>
> On Tue, May 19, 2020 at 5:14 AM H.J. Lu wrote:
> >
> > On Tue, May 19, 2020 at 1:48 AM Uros Bizjak wrote:
> > >
> > > On Sun, May 17, 2020 at 7:06 PM H.J. Lu wrote:
> > > >
> > > > Duplicate the cmpstrn pattern for cmpmem. The only difference
Qing Zhao writes:
> Segher and Richard,
>
> Now there are two major concerns from the discussion so far:
>
> 1. (From Richard): Inserting zero insns should be done after
> pass_thread_prologue_and_epilogue since later passes (for example,
> pass_regrename) might introduce new used caller-saved
On 9/17/20 3:56 AM, Jeff Law wrote:
>
> If it's been ack'd by a maintainer, yes. Jakub definitely qualifies as
> a maintainer, so feel free to push it on Martin's behalf.
>
>
> jeff
Sure, it has been pushed, thanks all.
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