https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68898
--- Comment #2 from Yuri Rumyantsev ---
Forgot to add stack trace:
Error: dominator of 6 status unknown
t2.f:41:0: internal compiler error: Segmentation fault
0xb4e62f crash_signal
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68898
--- Comment #1 from Yuri Rumyantsev ---
Created attachment 37028
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37028=edit
test-case to reproduce
Need to compile with -O2 -m32 -ffast-math options to reproduce. Note that
32-bit and
Assignee: unassigned at gcc dot gnu.org
Reporter: ysrumyan at gmail dot com
Target Milestone: ---
I tried to play with if-conversion flag and got ICE on all benchspec2 from
spec2000 suite. I attach simple Fortran reproducer. Note that
"-fno-if-conversion2" option doe
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66142
--- Comment #23 from Yuri Rumyantsev ---
Richard,
Do we have any chance to vectorize attached test-case using GCC6 compiler?
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66142
--- Comment #24 from Yuri Rumyantsev ---
Richard,
Do we have any chance to vectorize attached test-case using GCC6 compiler?
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68542
--- Comment #3 from Yuri Rumyantsev ---
I enhanced a patch for masked stores movement by guard on zero mask - move all
possible producers for stored value and performance degradation disappeared.
the patch will be re-designed and send for review
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67438
--- Comment #11 from Yuri Rumyantsev ---
In fact, the problem is quite different although it is caused by non-profitable
pattern matching ~X CMP ~Y -> Y CMP X. In general this pattern may be helpful
if we can delete not operation, e.g.
x1 =
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68435
--- Comment #6 from Yuri Rumyantsev ---
It turned out that fresh gcc performs tail duplication (aka path splitting)
preventing if-conversion. So I post a dump for 20150929 compiler which
reproduces the issue.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68435
--- Comment #7 from Yuri Rumyantsev ---
Created attachment 36780
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36780=edit
rtl-ce1 dump file
The dump is for 20150929 compiler
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68435
--- Comment #4 from Yuri Rumyantsev ---
Created attachment 36774
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36774=edit
tar file
tar file contains good and bad ce1-rtl dumps showing the problem
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68435
--- Comment #2 from Yuri Rumyantsev ---
I will post 2 rtl dumps for ce1 phase produced with -O2 -m32 options on ix86.
You can see that file t21.c.203r.ce1 produced by 20110927 compiler contains
3 possible IF blocks searched.
1 IF blocks
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67438
--- Comment #9 from Yuri Rumyantsev ---
It looks like such transformation is profitable if only def statements have a
single use, i.e. it looks reasonable for
if (255 - a) > (255 -b) /* a,b have char type. */
but it does not look reasonable
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68021
--- Comment #4 from Yuri Rumyantsev ---
Indeed, there is an issue with outer-loop unswitching - it should not be
performed for infinite loops. But if we slightly modify test if finite
outer-loop we will get the same error:
char a;
void fn1(char
/bugzilla/show_bug.cgi?id=68021
>
> H.J. Lu changed:
>
>What|Removed |Added
>
> CC| |ysrumyan at gmail dot com
>
>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68021
--- Comment #3 from Yuri Rumyantsev ---
It looks like unswitching of outer loops pass simply triggers the issue and
this tree-ssa-loop-ivopts issue.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67947
--- Comment #2 from Yuri Rumyantsev ---
revision 228760 must fix this bug.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67909
--- Comment #4 from Yuri Rumyantsev ---
Created attachment 36498
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36498=edit
proposed patch
This patch cures run-time error for 416.gamess.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67920
--- Comment #8 from Yuri Rumyantsev ---
Please check that revision 228760 will cure your issue.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67909
--- Comment #3 from Yuri Rumyantsev ---
Check that guard edge is around the inner loop was missed. After adding it
416.gamess run successfully.
I sent the fix for review.
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: ysrumyan at gmail dot com
Target Milestone: ---
For attached simple test-case we can see strange spills to stack, namely
for (i=0; in; i++)
out[j * n + i] = in[j * n + i
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67206
--- Comment #1 from Yuri Rumyantsev ysrumyan at gmail dot com ---
Created attachment 36180
-- https://gcc.gnu.org/bugzilla/attachment.cgi?id=36180action=edit
test-case to reproduce
Must be compiled with -O3 -m32 -march=slm to reproduce.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56309
--- Comment #34 from Yuri Rumyantsev ysrumyan at gmail dot com ---
Created attachment 36138
-- https://gcc.gnu.org/bugzilla/attachment.cgi?id=36138action=edit
simple reproducer
Use -O3 -std=c++14 options to compile and -fno-tree-loop
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56309
--- Comment #33 from Yuri Rumyantsev ysrumyan at gmail dot com ---
With current compiler there is not performance difference for by-ref and by-val
test-cases, but if we turn off if-convert transformation we will get ~2X
speed-up:
on Intel(R) Xeon
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66951
Yuri Rumyantsev ysrumyan at gmail dot com changed:
What|Removed |Added
CC||ysrumyan
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66926
--- Comment #4 from Yuri Rumyantsev ysrumyan at gmail dot com ---
I have a fix in my local area which cures ICE and perform outer-loop
vectorization:
vect-pr40979.f90:8:0: note: LOOP VECTORIZED
vect-pr40979.f90:8:0: note: OUTER LOOP VECTORIZED
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66926
--- Comment #2 from Yuri Rumyantsev ysrumyan at gmail dot com ---
Could somebody provides me with an instruction how to build trunk (fresh)
compiler with graphite?
Thanks.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66752
Yuri Rumyantsev ysrumyan at gmail dot com changed:
What|Removed |Added
CC||ysrumyan
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66752
--- Comment #4 from Yuri Rumyantsev ysrumyan at gmail dot com ---
Created attachment 35947
-- https://gcc.gnu.org/bugzilla/attachment.cgi?id=35947action=edit
test-case to reproduce
compile with -Ofast -m32 -march=slm and notice redundant test
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66142
--- Comment #13 from Yuri Rumyantsev ysrumyan at gmail dot com ---
Original test-case is not vectorized yet with Richard patch for sccvn.
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: ysrumyan at gmail dot com
Target Milestone: ---
The attached test-case compiled with -Ofast -fopenmp -march=core-avx2 options
contains loop marked with pragma omp
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66142
--- Comment #1 from Yuri Rumyantsev ysrumyan at gmail dot com ---
Created attachment 35541
-- https://gcc.gnu.org/bugzilla/attachment.cgi?id=35541action=edit
test-case to reproduce
Must be compiled with -Ofast -fopenmp -march=core-avx2 options.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64691
--- Comment #2 from Yuri Rumyantsev ysrumyan at gmail dot com ---
Created attachment 35526
-- https://gcc.gnu.org/bugzilla/attachment.cgi?id=35526action=edit
tset-case to reproduce and assembly file.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64691
Yuri Rumyantsev ysrumyan at gmail dot com changed:
What|Removed |Added
CC||ysrumyan
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65950
--- Comment #4 from Yuri Rumyantsev ysrumyan at gmail dot com ---
The function containing given loop is marked as:
foo/24 (foo) @0x7f39f4b84620
Type: function definition analyzed
Visibility: prevailing_def_ironly
References:
Referring
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65950
--- Comment #1 from Yuri Rumyantsev ysrumyan at gmail dot com ---
Created attachment 35432
-- https://gcc.gnu.org/bugzilla/attachment.cgi?id=35432action=edit
test-case to reproduce
Must be compiled with -Ofast and -fopenmp options.
Assignee: unassigned at gcc dot gnu.org
Reporter: ysrumyan at gmail dot com
Target Milestone: ---
If we compile attached test-case without lto, e.g. using -Ofast and -fopenmp
loop in foo is vectorized but if we add -flto option it won't be vectorized.
The problem is 'exit' statement
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65698
--- Comment #2 from Yuri Rumyantsev ysrumyan at gmail dot com ---
Created attachment 35257
-- https://gcc.gnu.org/bugzilla/attachment.cgi?id=35257action=edit
assembly for test.c
Additional option '-march=slm' was used for it but it is non
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: ysrumyan at gmail dot com
For attached test-case in inner loop we can see the following deficiencies:
1. 2 redundant fills and one spill in comparison part of loop - I assume
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65698
--- Comment #1 from Yuri Rumyantsev ysrumyan at gmail dot com ---
Created attachment 35256
-- https://gcc.gnu.org/bugzilla/attachment.cgi?id=35256action=edit
test-case to reproduce
It needs to be compiled with -O3 -m32 options.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65651
--- Comment #2 from Yuri Rumyantsev ysrumyan at gmail dot com ---
Created attachment 35203
-- https://gcc.gnu.org/bugzilla/attachment.cgi?id=35203action=edit
test-case to reproduce
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65651
--- Comment #1 from Yuri Rumyantsev ysrumyan at gmail dot com ---
Created attachment 35202
-- https://gcc.gnu.org/bugzilla/attachment.cgi?id=35202action=edit
test-case to reproduce
Need to compile with -O2 flag only.
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: ysrumyan at gmail dot com
Compile attached bad.c with -O2 option only we can see that redundant cmp
with zero instruction is generated:
subl%r9d, %eax
cmpl$0, %eax
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65651
--- Comment #4 from Yuri Rumyantsev ysrumyan at gmail dot com ---
Jakub,
Thanks for your comments.
We will try to fix this issue ourselves.
Best regards.
Yuri.
P.S. Note that icc does not produce such redundant cmp with zero.
2015-04-01 16
: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: ysrumyan at gmail dot com
5.0 compiler is not vectorized simple loop extracted from geekbench but 4.9
compiler does. This is caused by different operand ordering
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65494
--- Comment #1 from Yuri Rumyantsev ysrumyan at gmail dot com ---
Created attachment 35072
-- https://gcc.gnu.org/bugzilla/attachment.cgi?id=35072action=edit
test-case to reproduce
The following options are used to reproduce: -Ofast -funroll
-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: ysrumyan at gmail dot com
I noticed that vectorized version of loop is deleted although compiler reports
that it was successfully vectorized:
t1.c:7:3: note: LOOP VECTORIZED
but after we can see in vect-dump:
Removing
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65206
--- Comment #1 from Yuri Rumyantsev ysrumyan at gmail dot com ---
Created attachment 34867
-- https://gcc.gnu.org/bugzilla/attachment.cgi?id=34867action=edit
test-case to reproduce
Test needs to be compiled with -Ofast -m64 -mcore-avx2 options.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65161
Yuri Rumyantsev ysrumyan at gmail dot com changed:
What|Removed |Added
CC||ysrumyan
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65161
--- Comment #3 from Yuri Rumyantsev ysrumyan at gmail dot com ---
Created attachment 34856
-- https://gcc.gnu.org/bugzilla/attachment.cgi?id=34856action=edit
possible patch
Add check on selective scheduling to not perform instruction
: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: ysrumyan at gmail dot com
We noticed 10% regression on one important benchmark using for testing x86
32-bit platforms. This regression can be reproduced on attached test-case: one
more fill is present
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65135
--- Comment #1 from Yuri Rumyantsev ysrumyan at gmail dot com ---
Created attachment 34814
-- https://gcc.gnu.org/bugzilla/attachment.cgi?id=34814action=edit
test-case to reproduce
Need to compile with -O2 -m32 -fPIE -pie options.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65135
--- Comment #4 from Yuri Rumyantsev ysrumyan at gmail dot com ---
This patch improves performance of almost all benchmarks in pic-mode for 32-bit
target, but we have the only huge degradation on benchmark from eembc1.1 suite.
I mentioned
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65078
--- Comment #1 from Yuri Rumyantsev ysrumyan at gmail dot com ---
Created attachment 34782
-- https://gcc.gnu.org/bugzilla/attachment.cgi?id=34782action=edit
test-case to reproduce
Options -m32 -msse2 -O3 must be used.
: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: ysrumyan at gmail dot com
Using attached simple test-case extracted from codec we found out that 4.8.2
compiler generates more compact binaries in comparison
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64434
--- Comment #19 from Yuri Rumyantsev ysrumyan at gmail dot com ---
Andrew!
Could you please try modified test-case (test1.c) which is attached.
Thanks.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64434
--- Comment #20 from Yuri Rumyantsev ysrumyan at gmail dot com ---
Created attachment 34700
-- https://gcc.gnu.org/bugzilla/attachment.cgi?id=34700action=edit
another test-case
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64809
Yuri Rumyantsev ysrumyan at gmail dot com changed:
What|Removed |Added
CC||ysrumyan
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64746
--- Comment #2 from Yuri Rumyantsev ysrumyan at gmail dot com ---
Created attachment 34551
-- https://gcc.gnu.org/bugzilla/attachment.cgi?id=34551action=edit
proposed patch
Patch to cure vectorization issue.
: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: ysrumyan at gmail dot com
Attached simple test-case extracted from important suite is not vectorized even
if 'pragma omp simd' is used since
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64746
--- Comment #1 from Yuri Rumyantsev ysrumyan at gmail dot com ---
Created attachment 34548
-- https://gcc.gnu.org/bugzilla/attachment.cgi?id=34548action=edit
test-case to reproduce.
Need to compile this test on x86 with option
-O3 -fopenmp
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64434
--- Comment #11 from Yuri Rumyantsev ysrumyan at gmail dot com ---
Created attachment 34363
-- https://gcc.gnu.org/bugzilla/attachment.cgi?id=34363action=edit
patch to fix issue
This patch fixed almost all issues related to operand
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: ysrumyan at gmail dot com
We noticed huge regression on eembc1.1 and eembc2.0 for 32-bit target at x86.
It can be reproduced on attached test-case:
before this fix number
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64434
--- Comment #1 from Yuri Rumyantsev ysrumyan at gmail dot com ---
Created attachment 34345
-- https://gcc.gnu.org/bugzilla/attachment.cgi?id=34345action=edit
simple reproducer
Need to compile with -m32 on x86 platform.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64434
--- Comment #3 from Yuri Rumyantsev ysrumyan at gmail dot com ---
I put into attachment two assembly files for test-case compiled with
-O2 -m32 -S options.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64434
--- Comment #4 from Yuri Rumyantsev ysrumyan at gmail dot com ---
Created attachment 34348
-- https://gcc.gnu.org/bugzilla/attachment.cgi?id=34348action=edit
assembly files for test.c
Assembly file fro test.c
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64434
--- Comment #5 from Yuri Rumyantsev ysrumyan at gmail dot com ---
Created attachment 34349
-- https://gcc.gnu.org/bugzilla/attachment.cgi?id=34349action=edit
assembly file before r216728
Assembly file.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64434
--- Comment #6 from Yuri Rumyantsev ysrumyan at gmail dot com ---
H.J.
I put before/after assembly files into bug attachment. We saw slowdown
on SLM and HSW for 32-bit on eembc2.0, e.g. des degradated on 36%
(SLM) and 7%(HSW). But we did not see
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64434
--- Comment #8 from Yuri Rumyantsev ysrumyan at gmail dot com ---
The issue is caused by operand canonicalization, i.e. there is special
operand odering for commutative operations to have the same
representation for a + b and b
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63743
Yuri Rumyantsev ysrumyan at gmail dot com changed:
What|Removed |Added
CC||ysrumyan
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63941
--- Comment #2 from Yuri Rumyantsev ysrumyan at gmail dot com ---
My patch is responsible for ICE - I did not assume that before if-convert phase
cfg may contain redundant degenerative conditional branches:
bb 4:
...
_14 = d[pretmp_51
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61391
--- Comment #6 from Yuri Rumyantsev ysrumyan at gmail dot com ---
Arseny, I am not able to close this bug but you can do it.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61743
--- Comment #12 from Yuri Rumyantsev ysrumyan at gmail dot com ---
Richard,
Did you have a chance to look at this and prepare more general fix?
Thanks.
Yuri.
2014-09-08 15:13 GMT+04:00 rguenther at suse dot de gcc-bugzi...@gcc.gnu.org:
https
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62012
--- Comment #4 from Yuri Rumyantsev ysrumyan at gmail dot com ---
I checked that our benchmark is successfully vectorized with function inlining.
So this bug must be closed as fixed/resolved.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62012
--- Comment #5 from Yuri Rumyantsev ysrumyan at gmail dot com ---
You can close this bug as fixed/resolved (see my comment).
Thanks.
Yuri.
2014-09-08 15:29 GMT+04:00 rguenth at gcc dot gnu.org
gcc-bugzi...@gcc.gnu.org:
https://gcc.gnu.org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61743
--- Comment #10 from Yuri Rumyantsev ysrumyan at gmail dot com ---
Richard,
Do you have any progress?
Thanks.
2014-08-13 12:35 GMT+04:00 rguenth at gcc dot gnu.org
gcc-bugzi...@gcc.gnu.org:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61743
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62012
--- Comment #2 from Yuri Rumyantsev ysrumyan at gmail dot com ---
Any updates?
Thanks.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62011
--- Comment #7 from Yuri Rumyantsev ysrumyan at gmail dot com ---
Please ignore my previous comment - if we insert nullifying of destination
register before each popcnt (and lzcnt) performance will restore:
original test results:
unsigned
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62011
--- Comment #9 from Yuri Rumyantsev ysrumyan at gmail dot com ---
This is not u32 version but u64. The first loop (u32) version looks like:
.L23:
leal1(%rdx), %ecx
xorq%rax, %rax
popcntq(%rbx,%rax,8), %rax
leal
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62011
Yuri Rumyantsev ysrumyan at gmail dot com changed:
What|Removed |Added
CC||ysrumyan
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61743
--- Comment #8 from Yuri Rumyantsev ysrumyan at gmail dot com ---
Richard,
I tested both proposed fixes and i turned out that the first one is preferable
since performance of benchmark came back. Note that hoisting 2nd vrp pass gave
us another
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61743
--- Comment #3 from Yuri Rumyantsev ysrumyan at gmail dot com ---
Any comments will be appreciated.
-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: ysrumyan at gmail dot com
For attached simple test-case if we omit 'uniform' specification compiler
produces ICE:
error: incorrect type of vector CONSTRUCTOR elements
Note that for stmt
_38 = {vect_cst_.62_39, vect_cst_
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62021
--- Comment #1 from Yuri Rumyantsev ysrumyan at gmail dot com ---
Created attachment 33247
-- https://gcc.gnu.org/bugzilla/attachment.cgi?id=33247action=edit
test-case to reprroduce
Test should be compiled with
-O2 -fopenmp -march=core-avx2
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61672
--- Comment #1 from Yuri Rumyantsev ysrumyan at gmail dot com ---
Any comments will be appreciated.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61672
--- Comment #3 from Yuri Rumyantsev ysrumyan at gmail dot com ---
Created attachment 33235
-- https://gcc.gnu.org/bugzilla/attachment.cgi?id=33235action=edit
file to reproduce
Need to be compiled with
-m32 -O3 -Wframe-larger-than=1728 -std=gnu
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61672
--- Comment #4 from Yuri Rumyantsev ysrumyan at gmail dot com ---
Richard,
I put into attachment original file. For compiler built 20140208 and 20140730
I've got:
grep -c redundant test.cc.179r.pre (20140208)
3825
grep -c redundant test
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61672
--- Comment #5 from Yuri Rumyantsev ysrumyan at gmail dot com ---
Richard,
I put the original file into 61672 attachment and add comments for
reproducing.
2014-08-04 15:16 GMT+04:00 rguenth at gcc dot gnu.org
gcc-bugzi...@gcc.gnu.org:
https
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61672
--- Comment #7 from Yuri Rumyantsev ysrumyan at gmail dot com ---
It really fixes the issue. Thanks.
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: ysrumyan at gmail dot com
We noticed that for one important benchmark using '-lto' options leads to
performance degradation which is caused by not-vectorizing the hottest loop
after function inlining. I
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62012
--- Comment #1 from Yuri Rumyantsev ysrumyan at gmail dot com ---
Created attachment 33241
-- https://gcc.gnu.org/bugzilla/attachment.cgi?id=33241action=edit
test-case to reproduce
Options to compile are:
-Ofast -m64 -march=core-avx2 -fopenmp
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61822
--- Comment #3 from Yuri Rumyantsev ysrumyan at gmail dot com ---
Hi Rainer,
Could you try attached patch to check if it helps (test should not be
run for sparc).
Thanks ahead.
Yuri..
2014-07-16 19:20 GMT+04:00 ro at gcc dot gnu.org gcc
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61822
--- Comment #2 from Yuri Rumyantsev ysrumyan at gmail dot com ---
It looks like
/* { dg-require-effective-target vect_condition } */
directive was missed in vect-cond-reduc-1.c test.
I will fix it asap.
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: ysrumyan at gmail dot com
We discovered significant performance regression on one important benchmark
from eembc2.0 suite after r211625. It turned out that complete unroll
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61743
--- Comment #1 from Yuri Rumyantsev ysrumyan at gmail dot com ---
Created attachment 33088
-- https://gcc.gnu.org/bugzilla/attachment.cgi?id=33088action=edit
test-case to reproduce
Use '-O3 -funroll-loops -Dbtype=[int,e_u8]' to reproduce.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61742
--- Comment #2 from Yuri Rumyantsev ysrumyan at gmail dot com ---
This is duplicate of PR 61576 and it should pass after r212347.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61742
--- Comment #4 from Yuri Rumyantsev ysrumyan at gmail dot com ---
Ok. I will add it.
2014-07-08 14:45 GMT+04:00 jakub at gcc dot gnu.org gcc-bugzi...@gcc.gnu.org:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61742
--- Comment #3 from Jakub
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: ysrumyan at gmail dot com
In real application which is compiled with restrictions on frame size after
r208113 number of deleted redundant instruction decreased significantly
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61391
--- Comment #4 from Yuri Rumyantsev ysrumyan at gmail dot com ---
It turned out that wrong PR number was used in ChangeLog. In fact this bug was
fixed:
URL: http://gcc.gnu.org/viewcvs?rev=211263root=gccview=rev
Log:
gcc/
PR tree-optimization
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61576
--- Comment #4 from Yuri Rumyantsev ysrumyan at gmail dot com ---
There is an issue with phi-node and reduction stmt - after r211302 new hammock
was inserted between reduction stmt and bb containing phi:
bb 6:
d.6_12 = d_lsm.14_17 + 1
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61518
Yuri Rumyantsev ysrumyan at gmail dot com changed:
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