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* [Bug c/59101] New: integer wrong code bug @ 2013-11-13 5:59 regehr at cs dot utah.edu 2013-11-13 9:09 ` [Bug target/59101] [4.7/4.8/4.9 Regression] " jakub at gcc dot gnu.org ` (5 more replies) 0 siblings, 6 replies; 7+ messages in thread From: regehr at cs dot utah.edu @ 2013-11-13 5:59 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59101 Bug ID: 59101 Summary: integer wrong code bug Product: gcc Version: 4.9.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c Assignee: unassigned at gcc dot gnu.org Reporter: regehr at cs dot utah.edu $ gcc -O0 foo.c ; ./a.out 7 $ gcc -O1 foo.c ; ./a.out 6 $ cat foo.c int printf(const char *, ...); int a, b; int main() { b = (~a & 4102790424) > 0 | 6; printf("%d\n", b); return 0; } $ gcc -v Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/home/regehr/z/compiler-install/gcc-r204695-install/libexec/gcc/x86_64-unknown-linux-gnu/4.9.0/lto-wrapper Target: x86_64-unknown-linux-gnu Configured with: /home/regehr/z/compiler-source/gcc/configure --prefix=/home/regehr/z/compiler-install/gcc-r204695-install --enable-languages=c,c++ --enable-multilib Thread model: posix gcc version 4.9.0 20131112 (experimental) (GCC) ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug target/59101] [4.7/4.8/4.9 Regression] integer wrong code bug 2013-11-13 5:59 [Bug c/59101] New: integer wrong code bug regehr at cs dot utah.edu @ 2013-11-13 9:09 ` jakub at gcc dot gnu.org 2013-11-13 9:31 ` jakub at gcc dot gnu.org ` (4 subsequent siblings) 5 siblings, 0 replies; 7+ messages in thread From: jakub at gcc dot gnu.org @ 2013-11-13 9:09 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59101 Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2013-11-13 CC| |jakub at gcc dot gnu.org Component|c |target Target Milestone|--- |4.7.4 Summary|integer wrong code bug |[4.7/4.8/4.9 Regression] | |integer wrong code bug Ever confirmed|0 |1 --- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Sounds to be a bug in the x86_64 *anddi_2 pattern. If the constant is > 0 and has bit 31 set, then we can't match CCNOmode, just CCZmode. ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug target/59101] [4.7/4.8/4.9 Regression] integer wrong code bug 2013-11-13 5:59 [Bug c/59101] New: integer wrong code bug regehr at cs dot utah.edu 2013-11-13 9:09 ` [Bug target/59101] [4.7/4.8/4.9 Regression] " jakub at gcc dot gnu.org @ 2013-11-13 9:31 ` jakub at gcc dot gnu.org 2013-11-14 8:14 ` jakub at gcc dot gnu.org ` (3 subsequent siblings) 5 siblings, 0 replies; 7+ messages in thread From: jakub at gcc dot gnu.org @ 2013-11-13 9:31 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59101 Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |ASSIGNED Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org --- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Created attachment 31205 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=31205&action=edit gcc49-pr59101.patch Untested fix. ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug target/59101] [4.7/4.8/4.9 Regression] integer wrong code bug 2013-11-13 5:59 [Bug c/59101] New: integer wrong code bug regehr at cs dot utah.edu 2013-11-13 9:09 ` [Bug target/59101] [4.7/4.8/4.9 Regression] " jakub at gcc dot gnu.org 2013-11-13 9:31 ` jakub at gcc dot gnu.org @ 2013-11-14 8:14 ` jakub at gcc dot gnu.org 2013-11-19 15:09 ` [Bug target/59101] [4.7 " rguenth at gcc dot gnu.org ` (2 subsequent siblings) 5 siblings, 0 replies; 7+ messages in thread From: jakub at gcc dot gnu.org @ 2013-11-14 8:14 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59101 --- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Author: jakub Date: Thu Nov 14 08:14:24 2013 New Revision: 204775 URL: http://gcc.gnu.org/viewcvs?rev=204775&root=gcc&view=rev Log: PR target/59101 * config/i386/i386.md (*anddi_2): Only allow CCZmode if operands[2] satisfies_constraint_Z that might have bit 31 set. * gcc.c-torture/execute/pr59101.c: New test. Added: branches/gcc-4_8-branch/gcc/testsuite/gcc.c-torture/execute/pr59101.c Modified: branches/gcc-4_8-branch/gcc/ChangeLog branches/gcc-4_8-branch/gcc/config/i386/i386.md branches/gcc-4_8-branch/gcc/testsuite/ChangeLog ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug target/59101] [4.7 Regression] integer wrong code bug 2013-11-13 5:59 [Bug c/59101] New: integer wrong code bug regehr at cs dot utah.edu ` (2 preceding siblings ...) 2013-11-14 8:14 ` jakub at gcc dot gnu.org @ 2013-11-19 15:09 ` rguenth at gcc dot gnu.org 2014-05-07 16:07 ` jakub at gcc dot gnu.org 2014-05-07 16:21 ` jakub at gcc dot gnu.org 5 siblings, 0 replies; 7+ messages in thread From: rguenth at gcc dot gnu.org @ 2013-11-19 15:09 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59101 Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Priority|P3 |P2 Known to work| |4.8.3, 4.9.0 Summary|[4.7/4.8/4.9 Regression] |[4.7 Regression] integer |integer wrong code bug |wrong code bug Known to fail| |4.8.2 ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug target/59101] [4.7 Regression] integer wrong code bug 2013-11-13 5:59 [Bug c/59101] New: integer wrong code bug regehr at cs dot utah.edu ` (3 preceding siblings ...) 2013-11-19 15:09 ` [Bug target/59101] [4.7 " rguenth at gcc dot gnu.org @ 2014-05-07 16:07 ` jakub at gcc dot gnu.org 2014-05-07 16:21 ` jakub at gcc dot gnu.org 5 siblings, 0 replies; 7+ messages in thread From: jakub at gcc dot gnu.org @ 2014-05-07 16:07 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59101 --- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Author: jakub Date: Wed May 7 16:07:21 2014 New Revision: 210176 URL: http://gcc.gnu.org/viewcvs?rev=210176&root=gcc&view=rev Log: Backported from mainline 2013-11-14 Jakub Jelinek <jakub@redhat.com> Uros Bizjak <ubizjak@gmail.com> PR target/59101 * config/i386/i386.md (*anddi_2): Only allow CCZmode if operands[2] satisfies_constraint_Z that might have bit 31 set. * gcc.c-torture/execute/pr59101.c: New test. Added: branches/gcc-4_7-branch/gcc/testsuite/gcc.c-torture/execute/pr59101.c Modified: branches/gcc-4_7-branch/gcc/ChangeLog branches/gcc-4_7-branch/gcc/config/i386/i386.md branches/gcc-4_7-branch/gcc/testsuite/ChangeLog ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug target/59101] [4.7 Regression] integer wrong code bug 2013-11-13 5:59 [Bug c/59101] New: integer wrong code bug regehr at cs dot utah.edu ` (4 preceding siblings ...) 2014-05-07 16:07 ` jakub at gcc dot gnu.org @ 2014-05-07 16:21 ` jakub at gcc dot gnu.org 5 siblings, 0 replies; 7+ messages in thread From: jakub at gcc dot gnu.org @ 2014-05-07 16:21 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59101 Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Known to work| |4.7.4 Resolution|--- |FIXED --- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Fixed. ^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2014-05-07 16:21 UTC | newest] Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2013-11-13 5:59 [Bug c/59101] New: integer wrong code bug regehr at cs dot utah.edu 2013-11-13 9:09 ` [Bug target/59101] [4.7/4.8/4.9 Regression] " jakub at gcc dot gnu.org 2013-11-13 9:31 ` jakub at gcc dot gnu.org 2013-11-14 8:14 ` jakub at gcc dot gnu.org 2013-11-19 15:09 ` [Bug target/59101] [4.7 " rguenth at gcc dot gnu.org 2014-05-07 16:07 ` jakub at gcc dot gnu.org 2014-05-07 16:21 ` jakub at gcc dot gnu.org
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