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* [Bug c/63843] New: wrong code generation at -O1 and higher @ 2014-11-13 0:57 mednafen at gmail dot com 2014-11-13 9:17 ` [Bug tree-optimization/63843] [5 Regression] " rguenth at gcc dot gnu.org ` (2 more replies) 0 siblings, 3 replies; 4+ messages in thread From: mednafen at gmail dot com @ 2014-11-13 0:57 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63843 Bug ID: 63843 Summary: wrong code generation at -O1 and higher Product: gcc Version: 5.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c Assignee: unassigned at gcc dot gnu.org Reporter: mednafen at gmail dot com Created attachment 33955 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33955&action=edit Testcase, good output is 8181. trunk revision 217451 gcc (GCC) 5.0.0 20141112 (experimental) Linux x86_64 $ ~mednafen/gcc-dev/bin/gcc -O0 -o tc tc.c $ ./tc 8181 $ ~mednafen/gcc-dev/bin/gcc -O1 -o tc tc.c $ ./tc ff81 $ ~mednafen/gcc-dev/bin/gcc -O1 -fno-tree-copyrename -o tc tc.c $ ./tc 8181 ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug tree-optimization/63843] [5 Regression] wrong code generation at -O1 and higher 2014-11-13 0:57 [Bug c/63843] New: wrong code generation at -O1 and higher mednafen at gmail dot com @ 2014-11-13 9:17 ` rguenth at gcc dot gnu.org 2014-11-18 17:22 ` [Bug rtl-optimization/63843] " Alex.Velenko at arm dot com 2014-11-19 8:19 ` jakub at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: rguenth at gcc dot gnu.org @ 2014-11-13 9:17 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63843 Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Target| |x86_64-*-* Priority|P3 |P1 ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug rtl-optimization/63843] [5 Regression] wrong code generation at -O1 and higher 2014-11-13 0:57 [Bug c/63843] New: wrong code generation at -O1 and higher mednafen at gmail dot com 2014-11-13 9:17 ` [Bug tree-optimization/63843] [5 Regression] " rguenth at gcc dot gnu.org @ 2014-11-18 17:22 ` Alex.Velenko at arm dot com 2014-11-19 8:19 ` jakub at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: Alex.Velenko at arm dot com @ 2014-11-18 17:22 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63843 Alex Velenko <Alex.Velenko at arm dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |Alex.Velenko at arm dot com --- Comment #3 from Alex Velenko <Alex.Velenko at arm dot com> --- Hi, Didn't have a gcc.gnu.org account yet, couldn't assign the ticket to myself. Came to the same conclusion. Also testing. Kind regards, Alex ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug rtl-optimization/63843] [5 Regression] wrong code generation at -O1 and higher 2014-11-13 0:57 [Bug c/63843] New: wrong code generation at -O1 and higher mednafen at gmail dot com 2014-11-13 9:17 ` [Bug tree-optimization/63843] [5 Regression] " rguenth at gcc dot gnu.org 2014-11-18 17:22 ` [Bug rtl-optimization/63843] " Alex.Velenko at arm dot com @ 2014-11-19 8:19 ` jakub at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: jakub at gcc dot gnu.org @ 2014-11-19 8:19 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63843 --- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Author: jakub Date: Wed Nov 19 08:18:53 2014 New Revision: 217753 URL: https://gcc.gnu.org/viewcvs?rev=217753&root=gcc&view=rev Log: PR rtl-optimization/63843 * simplify-rtx.c (simplify_binary_operation_1) <case ASHIFTRT>: For optimization of ashiftrt of subreg of lshiftrt, check that code is ASHIFTRT. * gcc.c-torture/execute/pr63843.c: New test. Added: trunk/gcc/testsuite/gcc.c-torture/execute/pr63843.c Modified: trunk/gcc/ChangeLog trunk/gcc/simplify-rtx.c trunk/gcc/testsuite/ChangeLog ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2014-11-19 8:19 UTC | newest] Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2014-11-13 0:57 [Bug c/63843] New: wrong code generation at -O1 and higher mednafen at gmail dot com 2014-11-13 9:17 ` [Bug tree-optimization/63843] [5 Regression] " rguenth at gcc dot gnu.org 2014-11-18 17:22 ` [Bug rtl-optimization/63843] " Alex.Velenko at arm dot com 2014-11-19 8:19 ` jakub at gcc dot gnu.org
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