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* [Bug tree-optimization/98381] New: Wrong code with -O3 -march=skylake-avx512
@ 2020-12-18 20:03 vsevolod.livinskij at frtk dot ru
2020-12-19 14:18 ` [Bug tree-optimization/98381] [11 Regression] Wrong code with -O3 -march=skylake-avx512 by r11-3072 hjl.tools at gmail dot com
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: vsevolod.livinskij at frtk dot ru @ 2020-12-18 20:03 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98381
Bug ID: 98381
Summary: Wrong code with -O3 -march=skylake-avx512
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: vsevolod.livinskij at frtk dot ru
Target Milestone: ---
Reproducer:
//func.cpp
extern bool var_22;
void test(long long a, unsigned b, unsigned long long c) {
for (long i = 0; i < 16; i += 1ULL)
if (a)
var_22 = 5023804122334ULL >= (char)c;
}
//driver.cpp
#include <stdio.h>
long long int a = -2161098602020439353LL;
unsigned int b = 1621447385U;
unsigned long long int c = 16505450185101189749ULL;
bool var_22 = (bool)0;
void test(long long int a, unsigned int b, unsigned long long int c);
int main() {
test(a, b, c);
printf("%d\n", (int)var_22);
}
Error:
>$ g++ -O3 -march=skylake-avx512 func.cpp driver.cpp && sde -skx -- ./a.out
0
>$ g++ -O0 func.cpp driver.cpp && sde -skx -- ./a.out
1
gcc version 11.0.0 20201217 (6f8486523f61bf0aa476dfa4197d1e3b71a0a8f3) (GCC)
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug tree-optimization/98381] [11 Regression] Wrong code with -O3 -march=skylake-avx512 by r11-3072 2020-12-18 20:03 [Bug tree-optimization/98381] New: Wrong code with -O3 -march=skylake-avx512 vsevolod.livinskij at frtk dot ru @ 2020-12-19 14:18 ` hjl.tools at gmail dot com 2020-12-21 8:29 ` marxin at gcc dot gnu.org ` (3 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: hjl.tools at gmail dot com @ 2020-12-19 14:18 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98381 H.J. Lu <hjl.tools at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |rguenther at suse dot de Last reconfirmed| |2020-12-19 Summary|Wrong code with -O3 |[11 Regression] Wrong code |-march=skylake-avx512 |with -O3 | |-march=skylake-avx512 by | |r11-3072 Status|UNCONFIRMED |NEW Ever confirmed|0 |1 Target Milestone|--- |11.0 --- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> --- It is caused by r11-3072. ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/98381] [11 Regression] Wrong code with -O3 -march=skylake-avx512 by r11-3072 2020-12-18 20:03 [Bug tree-optimization/98381] New: Wrong code with -O3 -march=skylake-avx512 vsevolod.livinskij at frtk dot ru 2020-12-19 14:18 ` [Bug tree-optimization/98381] [11 Regression] Wrong code with -O3 -march=skylake-avx512 by r11-3072 hjl.tools at gmail dot com @ 2020-12-21 8:29 ` marxin at gcc dot gnu.org 2021-01-04 9:03 ` rguenth at gcc dot gnu.org ` (2 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: marxin at gcc dot gnu.org @ 2020-12-21 8:29 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98381 Martin Liška <marxin at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Known to fail| |11.0 Priority|P3 |P1 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/98381] [11 Regression] Wrong code with -O3 -march=skylake-avx512 by r11-3072 2020-12-18 20:03 [Bug tree-optimization/98381] New: Wrong code with -O3 -march=skylake-avx512 vsevolod.livinskij at frtk dot ru 2020-12-19 14:18 ` [Bug tree-optimization/98381] [11 Regression] Wrong code with -O3 -march=skylake-avx512 by r11-3072 hjl.tools at gmail dot com 2020-12-21 8:29 ` marxin at gcc dot gnu.org @ 2021-01-04 9:03 ` rguenth at gcc dot gnu.org 2021-01-05 14:54 ` cvs-commit at gcc dot gnu.org 2021-01-05 14:56 ` rguenth at gcc dot gnu.org 4 siblings, 0 replies; 6+ messages in thread From: rguenth at gcc dot gnu.org @ 2021-01-04 9:03 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98381 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 --- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> --- Mine. ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/98381] [11 Regression] Wrong code with -O3 -march=skylake-avx512 by r11-3072 2020-12-18 20:03 [Bug tree-optimization/98381] New: Wrong code with -O3 -march=skylake-avx512 vsevolod.livinskij at frtk dot ru ` (2 preceding siblings ...) 2021-01-04 9:03 ` rguenth at gcc dot gnu.org @ 2021-01-05 14:54 ` cvs-commit at gcc dot gnu.org 2021-01-05 14:56 ` rguenth at gcc dot gnu.org 4 siblings, 0 replies; 6+ messages in thread From: cvs-commit at gcc dot gnu.org @ 2021-01-05 14:54 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98381 --- Comment #3 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:01da03c915f086fb9aa36b809c1a06a9f661533b commit r11-6468-g01da03c915f086fb9aa36b809c1a06a9f661533b Author: Richard Biener <rguenther@suse.de> Date: Tue Jan 5 14:23:55 2021 +0100 tree-optimization/98381 - fix live bool vector extract This fixes extraction of live bool vector results for the case of integer mode vectors. 2021-01-05 Richard Biener <rguenther@suse.de> PR tree-optimization/98381 * tree.c (vector_element_bits): Properly compute bool vector element size. * tree-vect-loop.c (vectorizable_live_operation): Properly compute the last lane bit offset. ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/98381] [11 Regression] Wrong code with -O3 -march=skylake-avx512 by r11-3072 2020-12-18 20:03 [Bug tree-optimization/98381] New: Wrong code with -O3 -march=skylake-avx512 vsevolod.livinskij at frtk dot ru ` (3 preceding siblings ...) 2021-01-05 14:54 ` cvs-commit at gcc dot gnu.org @ 2021-01-05 14:56 ` rguenth at gcc dot gnu.org 4 siblings, 0 replies; 6+ messages in thread From: rguenth at gcc dot gnu.org @ 2021-01-05 14:56 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98381 Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |FIXED Status|ASSIGNED |RESOLVED --- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> --- Fixed. ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2021-01-05 14:56 UTC | newest] Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2020-12-18 20:03 [Bug tree-optimization/98381] New: Wrong code with -O3 -march=skylake-avx512 vsevolod.livinskij at frtk dot ru 2020-12-19 14:18 ` [Bug tree-optimization/98381] [11 Regression] Wrong code with -O3 -march=skylake-avx512 by r11-3072 hjl.tools at gmail dot com 2020-12-21 8:29 ` marxin at gcc dot gnu.org 2021-01-04 9:03 ` rguenth at gcc dot gnu.org 2021-01-05 14:54 ` cvs-commit at gcc dot gnu.org 2021-01-05 14:56 ` rguenth at gcc dot gnu.org
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