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* [Bug rtl-optimization/98793] New: [11 Regression] wrong code with --param=max-jump-thread-duplication-stmts=4
@ 2021-01-22 11:36 zsojka at seznam dot cz
2021-01-22 12:33 ` [Bug tree-optimization/98793] " rguenth at gcc dot gnu.org
` (5 more replies)
0 siblings, 6 replies; 7+ messages in thread
From: zsojka at seznam dot cz @ 2021-01-22 11:36 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98793
Bug ID: 98793
Summary: [11 Regression] wrong code with
--param=max-jump-thread-duplication-stmts=4
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Keywords: wrong-code
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: x86_64-pc-linux-gnu
Created attachment 50033
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=50033&action=edit
reduced testcase
Output:
$ x86_64-pc-linux-gnu-gcc -O2 --param=max-jump-thread-duplication-stmts=3
testcase.c -Wno-psabi && ./a.out
$ x86_64-pc-linux-gnu-gcc -O2 --param=max-jump-thread-duplication-stmts=4
testcase.c -Wno-psabi && ./a.out
Aborted
$ x86_64-pc-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-amd64/bin/x86_64-pc-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-r11-6849-20210122123514-gee78c20e74d-checking-yes-rtl-df-extra-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/11.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--with-cloog --with-ppl --with-isl --build=x86_64-pc-linux-gnu
--host=x86_64-pc-linux-gnu --target=x86_64-pc-linux-gnu
--with-ld=/usr/bin/x86_64-pc-linux-gnu-ld
--with-as=/usr/bin/x86_64-pc-linux-gnu-as --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-r11-6849-20210122123514-gee78c20e74d-checking-yes-rtl-df-extra-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 11.0.0 20210122 (experimental) (GCC)
I am unable to further reduce the testcase. I have several similar testcases,
all seem to be related to higher values of
--param=max-jump-thread-duplication-stmts=
^ permalink raw reply [flat|nested] 7+ messages in thread* [Bug tree-optimization/98793] [11 Regression] wrong code with --param=max-jump-thread-duplication-stmts=4 2021-01-22 11:36 [Bug rtl-optimization/98793] New: [11 Regression] wrong code with --param=max-jump-thread-duplication-stmts=4 zsojka at seznam dot cz @ 2021-01-22 12:33 ` rguenth at gcc dot gnu.org 2021-01-22 12:51 ` rguenth at gcc dot gnu.org ` (4 subsequent siblings) 5 siblings, 0 replies; 7+ messages in thread From: rguenth at gcc dot gnu.org @ 2021-01-22 12:33 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98793 Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Component|rtl-optimization |tree-optimization Status|UNCONFIRMED |NEW Last reconfirmed| |2021-01-22 Target Milestone|--- |11.0 Ever confirmed|0 |1 --- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> --- Confirmed. ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/98793] [11 Regression] wrong code with --param=max-jump-thread-duplication-stmts=4 2021-01-22 11:36 [Bug rtl-optimization/98793] New: [11 Regression] wrong code with --param=max-jump-thread-duplication-stmts=4 zsojka at seznam dot cz 2021-01-22 12:33 ` [Bug tree-optimization/98793] " rguenth at gcc dot gnu.org @ 2021-01-22 12:51 ` rguenth at gcc dot gnu.org 2021-01-22 13:06 ` [Bug tree-optimization/98793] [11 Regression] wrong code with --param=max-jump-thread-duplication-stmts=4 since r11-6468-g01da03c915f086fb marxin at gcc dot gnu.org ` (3 subsequent siblings) 5 siblings, 0 replies; 7+ messages in thread From: rguenth at gcc dot gnu.org @ 2021-01-22 12:51 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98793 --- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> --- Looks like an interaction between threading and vector lowering, with -mavx512bw it works (using SDE). ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/98793] [11 Regression] wrong code with --param=max-jump-thread-duplication-stmts=4 since r11-6468-g01da03c915f086fb 2021-01-22 11:36 [Bug rtl-optimization/98793] New: [11 Regression] wrong code with --param=max-jump-thread-duplication-stmts=4 zsojka at seznam dot cz 2021-01-22 12:33 ` [Bug tree-optimization/98793] " rguenth at gcc dot gnu.org 2021-01-22 12:51 ` rguenth at gcc dot gnu.org @ 2021-01-22 13:06 ` marxin at gcc dot gnu.org 2021-01-22 13:32 ` rguenth at gcc dot gnu.org ` (2 subsequent siblings) 5 siblings, 0 replies; 7+ messages in thread From: marxin at gcc dot gnu.org @ 2021-01-22 13:06 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98793 Martin Liška <marxin at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Summary|[11 Regression] wrong code |[11 Regression] wrong code |with |with |--param=max-jump-thread-dup |--param=max-jump-thread-dup |lication-stmts=4 |lication-stmts=4 since | |r11-6468-g01da03c915f086fb CC| |marxin at gcc dot gnu.org Known to work| |10.2.0 --- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> --- Started with r11-6468-g01da03c915f086fb. ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/98793] [11 Regression] wrong code with --param=max-jump-thread-duplication-stmts=4 since r11-6468-g01da03c915f086fb 2021-01-22 11:36 [Bug rtl-optimization/98793] New: [11 Regression] wrong code with --param=max-jump-thread-duplication-stmts=4 zsojka at seznam dot cz ` (2 preceding siblings ...) 2021-01-22 13:06 ` [Bug tree-optimization/98793] [11 Regression] wrong code with --param=max-jump-thread-duplication-stmts=4 since r11-6468-g01da03c915f086fb marxin at gcc dot gnu.org @ 2021-01-22 13:32 ` rguenth at gcc dot gnu.org 2021-01-22 14:24 ` cvs-commit at gcc dot gnu.org 2021-01-22 14:24 ` rguenth at gcc dot gnu.org 5 siblings, 0 replies; 7+ messages in thread From: rguenth at gcc dot gnu.org @ 2021-01-22 13:32 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98793 Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org Status|NEW |ASSIGNED Known to fail|11.0 | --- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> --- Mine. I have a fix, but there's a complication in that if we ever manage to get boolean vectors for 'generic' vectors (the vectorizer using sth like 'long' to hold a v8qi) then things will break. ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/98793] [11 Regression] wrong code with --param=max-jump-thread-duplication-stmts=4 since r11-6468-g01da03c915f086fb 2021-01-22 11:36 [Bug rtl-optimization/98793] New: [11 Regression] wrong code with --param=max-jump-thread-duplication-stmts=4 zsojka at seznam dot cz ` (3 preceding siblings ...) 2021-01-22 13:32 ` rguenth at gcc dot gnu.org @ 2021-01-22 14:24 ` cvs-commit at gcc dot gnu.org 2021-01-22 14:24 ` rguenth at gcc dot gnu.org 5 siblings, 0 replies; 7+ messages in thread From: cvs-commit at gcc dot gnu.org @ 2021-01-22 14:24 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98793 --- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Richard Biener <rguenth@gcc.gnu.org>: https://gcc.gnu.org/g:4be156d6bef317b8704052f11431457a577ed564 commit r11-6859-g4be156d6bef317b8704052f11431457a577ed564 Author: Richard Biener <rguenther@suse.de> Date: Fri Jan 22 14:32:39 2021 +0100 middle-end/98793 - properly handle BLKmode vectors in vector_element_bits The previous change made AVX512 mask vectors correct but disregarded the possibility of generic (BLKmode) boolean vectors which are exposed by the frontends already. 2021-01-22 Richard Biener <rguenther@suse.de> PR middle-end/98793 * tree.c (vector_element_bits): Key single-bit bool vector on integer mode rather than not vector mode. * gcc.dg/pr98793.c: New testcase. ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/98793] [11 Regression] wrong code with --param=max-jump-thread-duplication-stmts=4 since r11-6468-g01da03c915f086fb 2021-01-22 11:36 [Bug rtl-optimization/98793] New: [11 Regression] wrong code with --param=max-jump-thread-duplication-stmts=4 zsojka at seznam dot cz ` (4 preceding siblings ...) 2021-01-22 14:24 ` cvs-commit at gcc dot gnu.org @ 2021-01-22 14:24 ` rguenth at gcc dot gnu.org 5 siblings, 0 replies; 7+ messages in thread From: rguenth at gcc dot gnu.org @ 2021-01-22 14:24 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98793 Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |FIXED Status|ASSIGNED |RESOLVED --- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> --- Fixed. ^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2021-01-22 14:24 UTC | newest] Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2021-01-22 11:36 [Bug rtl-optimization/98793] New: [11 Regression] wrong code with --param=max-jump-thread-duplication-stmts=4 zsojka at seznam dot cz 2021-01-22 12:33 ` [Bug tree-optimization/98793] " rguenth at gcc dot gnu.org 2021-01-22 12:51 ` rguenth at gcc dot gnu.org 2021-01-22 13:06 ` [Bug tree-optimization/98793] [11 Regression] wrong code with --param=max-jump-thread-duplication-stmts=4 since r11-6468-g01da03c915f086fb marxin at gcc dot gnu.org 2021-01-22 13:32 ` rguenth at gcc dot gnu.org 2021-01-22 14:24 ` cvs-commit at gcc dot gnu.org 2021-01-22 14:24 ` rguenth at gcc dot gnu.org
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