-Original Message-
From: Qing Zhao
Date: Thursday, September 3, 2020 at 12:55 PM
To: Kees Cook
Cc: Segher Boessenkool , Jakub Jelinek
, Uros Bizjak , "Rodriguez Bahena, Victor"
, GCC Patches
Subject: Re: PING [Patch][Middle-end]Add
On Thu, Sep 03, 2020 at 11:02:50PM +0200, Iain Buclaw wrote:
> Excerpts from Alan Modra's message of September 3, 2020 3:01 pm:
> > Running the libiberty testsuite
> > ./test-demangle < libiberty/testsuite/d-demangle-expected
> > libiberty/d-demangle.c:214:14: runtime error: signed integer
On Thu, Sep 03, 2020 at 10:24:21AM +0800, Kewen.Lin wrote:
> on 2020/9/2 下午6:25, Segher Boessenkool wrote:
> > On Wed, Sep 02, 2020 at 11:16:00AM +0800, Kewen.Lin wrote:
> >> on 2020/9/1 上午3:41, Segher Boessenkool wrote:
> >>> On Tue, Aug 25, 2020 at 08:46:55PM +0800, Kewen.Lin wrote:
> 1)
Excerpts from Alan Modra's message of September 3, 2020 3:01 pm:
> Running the libiberty testsuite
> ./test-demangle < libiberty/testsuite/d-demangle-expected
> libiberty/d-demangle.c:214:14: runtime error: signed integer overflow:
> 922337203 * 10 cannot be represented in type 'long int'
>
> On
On Sep 3, 2020, Segher Boessenkool wrote:
> On Thu, Sep 03, 2020 at 02:17:04PM -0300, Alexandre Oliva wrote:
>> On Sep 3, 2020, Segher Boessenkool wrote:
>> > Oh, I meant what was in your patch. From a grep, all of mn10300, nds32,
>> > arm, cris, pdp11, rs6000, i386, visium, aarch64 have
On Sep 3, 2020, Segher Boessenkool wrote:
> On Thu, Sep 03, 2020 at 02:07:24PM -0300, Alexandre Oliva wrote:
>> On Sep 3, 2020, Segher Boessenkool wrote:
>> > On Thu, Sep 03, 2020 at 07:03:53AM -0300, Alexandre Oliva wrote:
>> >> On Sep 2, 2020, Segher Boessenkool wrote:
>> >> >> we might
> On Sep 3, 2020, at 12:48 PM, Ramana Radhakrishnan
> wrote:
>
> On Thu, Sep 3, 2020 at 6:13 PM Kees Cook via Gcc-patches
> wrote:
>>
>> On Thu, Sep 03, 2020 at 09:29:54AM -0500, Qing Zhao wrote:
>>> On average, all the options starting with “used_…” (i.e, only the
>>> registers that are
On Thu, Sep 03, 2020 at 02:17:04PM -0300, Alexandre Oliva wrote:
> On Sep 3, 2020, Segher Boessenkool wrote:
> > Oh, I meant what was in your patch. From a grep, all of mn10300, nds32,
> > arm, cris, pdp11, rs6000, i386, visium, aarch64 have default clobbers.
> > Hrm, what you said was the
On 9/1/20 1:22 PM, Jason Merrill wrote:
On 8/11/20 12:19 PM, Martin Sebor via Gcc-patches wrote:
-Wplacement-new handles array indices and pointer offsets the same:
by adjusting them by the size of the element. That's correct for
the latter but wrong for the former, causing false positives
*ping*
> Gesendet: Montag, 24. August 2020 um 23:08 Uhr
> Von: "Harald Anlauf"
> An: "fortran" , "gcc-patches"
> Betreff: [PATCH] PR fortran/96711 - ICE on NINT() Function
>
> When rounding a real to integer(16) an ICE happened due to an unhandled
> case in build_round_expr. The attached patch
Committed as obvious after regtesting.
The m4 template for the IALL library functions erroneously had a 0
as initial value for the case when the DIM and MASK arguments were
present instead of a -1. This was unfortunately not tested in the
testsuite before. Fixed and testcase added.
Thanks,
On Thu, Sep 03, 2020 at 02:07:24PM -0300, Alexandre Oliva wrote:
> On Sep 3, 2020, Segher Boessenkool wrote:
> > On Thu, Sep 03, 2020 at 07:03:53AM -0300, Alexandre Oliva wrote:
> >> On Sep 2, 2020, Segher Boessenkool wrote:
> >> >> we might succeed, but only if we had a pattern
> >> >> that
On 9/3/20 4:20 AM, Jakub Jelinek wrote:
Hi!
The recent libstdc++ changes caused lots of libstdc++-v3 tests FAILs
on i686-linux, all of them in the same spot during constexpr evaluation
of a recursive _S_gcd call.
The problem is yet another hash_map that used the default hasing of
tree keys
On 9/2/20 6:08 PM, Marek Polacek wrote:
On Wed, Sep 02, 2020 at 05:06:45PM -0400, Jason Merrill wrote:
On 9/2/20 4:37 PM, Marek Polacek wrote:
I've added do_aggregate_paren_init to factor some common code. It's not
perfect because the enclosing conditions couldn't really be factored out,
On 9/2/20 6:43 PM, Marc Glisse wrote:
On Wed, 2 Sep 2020, Jason Merrill via Gcc-patches wrote:
On 9/1/20 6:13 AM, Marc Glisse wrote:
On Tue, 1 Sep 2020, Jakub Jelinek via Gcc-patches wrote:
As discussed in the PR, fold-const.c punts on floating point constant
evaluation if the result is
Hi!
On Thu, Sep 03, 2020 at 10:37:33AM -0500, will schmidt wrote:
> On Wed, 2020-09-02 at 05:13 -0500, Segher Boessenkool wrote:
> > On Tue, Sep 01, 2020 at 09:00:20PM -0500, will schmidt wrote:
> > > This corrects an issue with the powerpc vector long long
> > > subtypes.
> > > As reported by
On Thu, Sep 3, 2020 at 6:13 PM Kees Cook via Gcc-patches
wrote:
>
> On Thu, Sep 03, 2020 at 09:29:54AM -0500, Qing Zhao wrote:
> > On average, all the options starting with “used_…” (i.e, only the
> > registers that are used in the routine will be zeroed) have very low
> > runtime overheads,
> On Sep 3, 2020, at 12:13 PM, Kees Cook wrote:
>
> On Thu, Sep 03, 2020 at 09:29:54AM -0500, Qing Zhao wrote:
>> On average, all the options starting with “used_…” (i.e, only the registers
>> that are used in the routine will be zeroed) have very low runtime
>> overheads, at most 1.72%
On Thu, Aug 20, 2020 at 09:09:40PM -0500, Segher Boessenkool wrote:
> Hi!
>
> On Tue, Aug 18, 2020 at 02:34:01AM -0400, Michael Meissner wrote:
> > +// Maximum number of insns to scan between the load address and the load
> > that
>
> Please don't mix /* and // comments. Just stick to /*
On Sep 3, 2020, Segher Boessenkool wrote:
> On Thu, Sep 03, 2020 at 07:03:53AM -0300, Alexandre Oliva wrote:
>> On Sep 2, 2020, Segher Boessenkool wrote:
>> > (And aarch, but not the other targets with default clobbers).
>>
>> And arm. I didn't look very hard for others yet; I wasn't sure
On Thu, Sep 03, 2020 at 09:29:54AM -0500, Qing Zhao wrote:
> On average, all the options starting with “used_…” (i.e, only the registers
> that are used in the routine will be zeroed) have very low runtime overheads,
> at most 1.72% for integer benchmarks, and 1.17% for FP benchmarks.
> If all
[dropping port maintainers for combine-mostly subthread]
On Sep 3, 2020, Segher Boessenkool wrote:
> On Thu, Sep 03, 2020 at 07:03:53AM -0300, Alexandre Oliva wrote:
>> On Sep 2, 2020, Segher Boessenkool wrote:
>> >> we might succeed, but only if we had a pattern
>> >> that matched
On September 3, 2020 5:39:18 PM GMT+02:00, Andrew MacLeod
wrote:
>On 9/3/20 3:43 AM, Richard Biener wrote:
>> On Thu, Sep 3, 2020 at 9:21 AM Aldy Hernandez
>wrote:
>>>
>>>
>>> On 8/31/20 2:55 PM, Richard Biener wrote:
On Mon, Aug 31, 2020 at 11:10 AM Aldy Hernandez
>wrote:
>
>
This patch updates the BPF back end to generate indirect calls via
the 'call %reg' instruction when targetting xBPF.
Additionally, the BPF ASM_SPEC is updated to pass along -mxbpf to
gas, where it is now supported.
2020-09-03 David Faust
gcc/
* config/bpf/bpf.h (ASM_SPEC): Pass
Looks like that the PDF attachments do not work with this alias either.
H.J. LU helped me to upload the performance data and code size data to the
following wiki page:
https://gitlab.com/x86-gcc/gcc/-/wikis/Zero-call-used-registers-data
Please refer to this link for the data.
thanks.
Qing
>
On Thu, Sep 03, 2020 at 07:03:53AM -0300, Alexandre Oliva wrote:
> On Sep 2, 2020, Segher Boessenkool wrote:
> > (And aarch, but not the other targets with default clobbers).
>
> And arm. I didn't look very hard for others yet; I wasn't sure it would
> be worth pursuing any further.
Oh, I
On 9/3/20 3:43 AM, Richard Biener wrote:
On Thu, Sep 3, 2020 at 9:21 AM Aldy Hernandez wrote:
On 8/31/20 2:55 PM, Richard Biener wrote:
On Mon, Aug 31, 2020 at 11:10 AM Aldy Hernandez wrote:
On 8/31/20 10:33 AM, Richard Biener wrote:
On Mon, Aug 31, 2020 at 10:20 AM Aldy Hernandez
This "fix" makes no sense, but it avoids an error from G++ about
std::is_constructible being incomplete. The real problem is elsewhere,
but this "fixes" the regression for now.
libstdc++-v3/ChangeLog:
PR libstdc++/96592
* include/std/tuple (_TupleConstraints): Use
On Wed, 2020-09-02 at 05:13 -0500, Segher Boessenkool wrote:
> Hi Will,
>
> On Tue, Sep 01, 2020 at 09:00:20PM -0500, will schmidt wrote:
> > This corrects an issue with the powerpc vector long long
> > subtypes.
> > As reported by SjMunroe in PR96139. When building some code with
> > -Wall
>
On 28/08/2020 13:04, Andrew Stubbs wrote:
Hi all,
This patch introduces DWARF CFI support for architectures that require
multiple registers to hold pointers, such as the stack pointer, frame
pointer, and return address. The motivating case is the AMD GCN
architecture which has 64-bit address
On Thu, Sep 3, 2020 at 8:08 AM Kirill Yukhin via Gcc-patches
wrote:
>
> Hello,
>
> On 06 июл 09:58, Hongyu Wang via Gcc-patches wrote:
> > Hi:
> >
> > This patch is about to support Intel Advanced Matrix Extensions (AMX)
> > which will be enabled in GLC.
> >
> > AMX is a new 64-bit programming
Hi,
Looks like both attached .csv files were deleted during the email delivery
procedure. Not sure what’s the reason for this.
Then I have to copy the text file here for you reference:
benchmarks:
C 500.perlbench_r
C 502.gcc_r
C 505.mcf_r
C++
Hello,
On 06 июл 09:58, Hongyu Wang via Gcc-patches wrote:
> Hi:
>
> This patch is about to support Intel Advanced Matrix Extensions (AMX)
> which will be enabled in GLC.
>
> AMX is a new 64-bit programming paradigm consisting of two
> compo nents: a set of 2-dimensional registers (tiles)
On Wed, Sep 02, 2020 at 04:55:14PM -0400, Jason Merrill via Gcc-patches wrote:
> C++ says that division by zero has undefined behavior, and that an
> expression with undefined behavior is not constant, so we shouldn't fold
> 1./0 to inf anyway. The same is true of other trapping operations. So
>
On Thu, Sep 03, 2020 at 03:53:35PM +0200, Richard Biener wrote:
> On Thu, 3 Sep 2020, Jakub Jelinek wrote:
> But is that an issue in practice? I usually do not do make -j32 cc1plus
> in a tree that was configured for bootstrap, nor do I use
> --enable-link-serialization in that case.
Guess most
Hi,
Per request, I collected runtime performance data and code size data with
CPU2017 on a X86 platform.
*** Machine info:
model name>-: Intel(R) Xeon(R) CPU E5-2699 v4 @ 2.20GHz
$ lscpu | grep NUMA
NUMA node(s): 2
NUMA node0 CPU(s): 0-21,44-65
NUMA node1 CPU(s):
On Thu, 3 Sep 2020, Jakub Jelinek wrote:
> Hi!
>
> As discussed earlier on IRC, --enable-link-mutex has a big problem that it
> decreases number of available jobs by the number of link commands waiting
> for the lock, so e.g. when doing make -j32 build with 11 different
> big programs linked
Hi!
As discussed earlier on IRC, --enable-link-mutex has a big problem that it
decreases number of available jobs by the number of link commands waiting
for the lock, so e.g. when doing make -j32 build with 11 different
big programs linked with $(LLINKER) we end up with just 22 effective jobs,
Running the libiberty testsuite
./test-demangle < libiberty/testsuite/d-demangle-expected
libiberty/d-demangle.c:214:14: runtime error: signed integer overflow:
922337203 * 10 cannot be represented in type 'long int'
On looking at silencing ubsan, I found a real bug in dlang_number.
For a 32-bit
The current std::gcd and std::chrono::duration::_S_gcd algorithms are
both recursive. This is potentially expensive to evaluate in constant
expressions, because each level of recursion makes a new copy of the
function to evaluate. The maximum number of steps is bounded
(proportional to the number
Hi!
On Tue, Sep 01, 2020 at 11:19:55AM +0800, Kewen.Lin wrote:
> This is a trivial patch to clean existing rs6000 test targets
> p8 and p9+ with existing has_arch_pwr8 and has_arch_pwr9
> target combination or only one of them. Not sure if it's a
> good idea to tidy this, but send out for
This improves the situation somewhat when vector lowering tries
to access vector bools as seen in PR96814.
We still fail to fold VIEW_CONVERT { 0, -1, -1, ... } for
vector bools with integer mode.
Bootstrapped and tested on x86_64-unknown-linux-gnu, pushed.
2020-09-03 Richard Biener
On Thu, 3 Sep 2020, Jakub Jelinek wrote:
> On Thu, Sep 03, 2020 at 12:07:36PM +0200, Richard Biener wrote:
> > LGTM.
>
> Thanks.
>
> > Can we now remove stream_input_location_now?
>
> There are a few remaining users, one is:
> case LTO_ert_must_not_throw:
> {
> r->type
On Thu, Sep 3, 2020 at 11:20 AM luoxhu wrote:
>
>
>
> On 2020/9/2 17:30, Richard Biener wrote:
> >> so maybe bypass convert_vector_to_array_for_subscript for special
> >> circumstance
> >> like "i = v[n%4]" or "v[n&3]=i" to generate vec_extract or vec_insert
> >> builtin
> >> call a relative
On Thu, Sep 03, 2020 at 12:07:36PM +0200, Richard Biener wrote:
> LGTM.
Thanks.
> Can we now remove stream_input_location_now?
There are a few remaining users, one is:
case LTO_ert_must_not_throw:
{
r->type = ERT_MUST_NOT_THROW;
r->u.must_not_throw.failure_decl
On Thu, 3 Sep 2020, Jakub Jelinek wrote:
> Hi!
>
> As mentioned in the PR, when compiling valgrind even on fairly small
> testcase where in one larger function the location keeps oscillating
> between a small line number and 8000-ish line number in the same file
> we very quickly run out of all
On Sep 2, 2020, Segher Boessenkool wrote:
> Hi!
> On Tue, Sep 01, 2020 at 07:22:57PM -0300, Alexandre Oliva wrote:
>> It's ugly, I know.
> Yeah, it's bloody disgusting :-)
:-)
> (And aarch, but not the other targets with default clobbers).
And arm. I didn't look very hard for others yet; I
Hi:
Add define_peephole2 to perform optimization like bellow:
+/* Optimize for TARGET_AVX512F
+ vpsubusw op1, op2, dst1;
+ vxorps xmm, xmm, dst2; > vpcmpleuw op1, op2, dst3
+ vpcmpeqw dst1, dst2, dst3 */
and
+/* Optimize for target above TARGET_SSE4_1
+ vpsubusw op1, op2, dst1;
Attach patch file.
Feng
From: Gcc-patches on behalf of Feng Xue OS
via Gcc-patches
Sent: Thursday, September 3, 2020 5:27 PM
To: Richard Biener; gcc-patches@gcc.gnu.org
Subject: [PATCH 2/2 V3] Simplify plusminus-mult-with-convert expr in forwprop
(PR
This patch is to handle simplification of plusminus-mult-with-convert expression
as ((T) X) +- ((T) Y), in which at least one of (X, Y) is result of
multiplication.
This is done in forwprop pass. We try to transform it to (T) (X +- Y), and
resort
to gimple-matcher to fold (X +- Y) instead of
On 2020/9/2 17:30, Richard Biener wrote:
>> so maybe bypass convert_vector_to_array_for_subscript for special
>> circumstance
>> like "i = v[n%4]" or "v[n&3]=i" to generate vec_extract or vec_insert builtin
>> call a relative simpler method?
> I think you have it backward. You need to work
This patch moves the move-immediate splitter after the regular ones so
that it has lower precedence, and updates its constraints.
For
int f3 (void) { return 0x1100; }
int f3_2 (void) { return 0x12345678; }
we now generate:
* with -O2 -mcpu=cortex-m0 -mpure-code:
f3:
movsr0, #136
Hi!
The recent libstdc++ changes caused lots of libstdc++-v3 tests FAILs
on i686-linux, all of them in the same spot during constexpr evaluation
of a recursive _S_gcd call.
The problem is yet another hash_map that used the default hasing of
tree keys through pointer hashing which is preserved
When seeing if any bound involved in a type is an uplevel reference,
we must look at the fullest view of a type, since that's what the
backends will do. Similarly for private types. We introduce
Get_Fullest_View for that purpose.
Tested on x86_64-pc-linux-gnu, committed on master
Hi!
As mentioned in the PR, when compiling valgrind even on fairly small
testcase where in one larger function the location keeps oscillating
between a small line number and 8000-ish line number in the same file
we very quickly run out of all possible location_t numbers and because of
that emit
Hi,
This patch creates a new test subdirectory gdc.dg/torture, moving all
runnable tests into it.
Tests that are not executed do not need to be compiled as torture tests,
they are only present for testing for a certain bug or ICE.
Tested on x86_64-linux-gnu, and committed to mainline.
Regards
Hi,
This patch alters the way the D2 testsuite is ran.
- All compilable tests now default to being compiled, rather than
assembled. A new directive has been added "LINK" to set the test
action to link.
- Unless the test explicitly requests, all compilable tests as well as
On Thu, Sep 3, 2020 at 9:21 AM Aldy Hernandez wrote:
>
>
>
> On 8/31/20 2:55 PM, Richard Biener wrote:
> > On Mon, Aug 31, 2020 at 11:10 AM Aldy Hernandez wrote:
> >>
> >>
> >>
> >> On 8/31/20 10:33 AM, Richard Biener wrote:
> >>> On Mon, Aug 31, 2020 at 10:20 AM Aldy Hernandez wrote:
>
>
On Thu, Sep 03, 2020 at 10:11:14AM +0800, Hongtao Liu wrote:
> Thanks for the review, update patch.
Ok for trunk, thanks.
> From acf3825279190ca0540bb4704f66568fdbe06ce8 Mon Sep 17 00:00:00 2001
> From: liuhongt
> Date: Wed, 8 Jul 2020 17:14:36 +0800
> Subject: [PATCH] Optimize memory broadcast
On 8/31/20 2:55 PM, Richard Biener wrote:
On Mon, Aug 31, 2020 at 11:10 AM Aldy Hernandez wrote:
On 8/31/20 10:33 AM, Richard Biener wrote:
On Mon, Aug 31, 2020 at 10:20 AM Aldy Hernandez wrote:
As discussed in the PR, the type of a switch operand may be different
than the type of
Bootstrapped (with BOOT_CFLAGS='-g -O2 -Wno-error=maybe-uninitialized')
and regtested on s390x-redhat-linux. Ok for master?
Certain alternatives of *vec_tf_to_v1tf use "v" constraint for its
TFmode source operand. Therefore it is assigned to VEC_REGS class, and
when it is reloaded using
For pattern A * C +- B * C -> (A +- B) * C, simplification is disabled
when A and B are not single-use. This patch is a minor enhancement
on the pattern, which allows folding if final result is found to be a
simple gimple value (constant/existing SSA).
Bootstrapped/regtested on x86_64-linux and
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