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* [Bug c++/96163] New: another ice in pass slp @ 2020-07-11 8:02 dcb314 at hotmail dot com 2020-07-13 7:59 ` [Bug tree-optimization/96163] " rguenth at gcc dot gnu.org ` (3 more replies) 0 siblings, 4 replies; 5+ messages in thread From: dcb314 at hotmail dot com @ 2020-07-11 8:02 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96163 Bug ID: 96163 Summary: another ice in pass slp Product: gcc Version: unknown Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: dcb314 at hotmail dot com Target Milestone: --- Created attachment 48862 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48862&action=edit C++ source code For the attached C++ source code with flag -O3, recent gcc trunk does this: /home/dcb/gcc/results.20200630/bin/g++ /home/dcb/gcc/results.20200701/bin/g++ bug630.cc: In function ‘void cm()’: bug630.cc:139:6: error: definition in block 2 follows the use 139 | void cm() { | ^~ for SSA_NAME: vect_cst__16 in statement: vect__2.37_17 = _14 / vect_cst__16; during GIMPLE pass: slp bug630.cc:139:6: internal compiler error: verify_ssa failed 0x13fb41b verify_ssa(bool, bool) ../../trunk.git/gcc/tree-ssa.c:1208 0x108dbf5 execute_function_todo ../../trunk.git/gcc/passes.c:1992 Trunk dated 20200630 is fine, 20200701 not. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/96163] another ice in pass slp 2020-07-11 8:02 [Bug c++/96163] New: another ice in pass slp dcb314 at hotmail dot com @ 2020-07-13 7:59 ` rguenth at gcc dot gnu.org 2020-07-13 8:42 ` rguenth at gcc dot gnu.org ` (2 subsequent siblings) 3 siblings, 0 replies; 5+ messages in thread From: rguenth at gcc dot gnu.org @ 2020-07-13 7:59 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96163 Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |ASSIGNED Version|unknown |11.0 Ever confirmed|0 |1 Component|c++ |tree-optimization Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org Last reconfirmed| |2020-07-13 --- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> --- Confirmed, mine. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/96163] another ice in pass slp 2020-07-11 8:02 [Bug c++/96163] New: another ice in pass slp dcb314 at hotmail dot com 2020-07-13 7:59 ` [Bug tree-optimization/96163] " rguenth at gcc dot gnu.org @ 2020-07-13 8:42 ` rguenth at gcc dot gnu.org 2020-07-13 14:50 ` cvs-commit at gcc dot gnu.org 2020-07-13 14:50 ` rguenth at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: rguenth at gcc dot gnu.org @ 2020-07-13 8:42 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96163 --- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> --- OK, so the issue is that the representation for pre-existing vectors leaves us with vector defs outside of the region (and not immediately before the region begin) which then confuses the logic in vect_stmt_dominates_stmt_p. I need to think a bit about this. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/96163] another ice in pass slp 2020-07-11 8:02 [Bug c++/96163] New: another ice in pass slp dcb314 at hotmail dot com 2020-07-13 7:59 ` [Bug tree-optimization/96163] " rguenth at gcc dot gnu.org 2020-07-13 8:42 ` rguenth at gcc dot gnu.org @ 2020-07-13 14:50 ` cvs-commit at gcc dot gnu.org 2020-07-13 14:50 ` rguenth at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: cvs-commit at gcc dot gnu.org @ 2020-07-13 14:50 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96163 --- 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:c4facd483de2d5b6b4d20e6ad74c85b9f1eba41a commit r11-2062-gc4facd483de2d5b6b4d20e6ad74c85b9f1eba41a Author: Richard Biener <rguenther@suse.de> Date: Mon Jul 13 12:41:35 2020 +0200 tree-optimization/96163 - fix placement issue with SLP and vectors This avoids placing stmts beyond the vectorizer region begin which confuses vect_stmt_dominates_stmt_p. 2020-07-13 Richard Biener <rguenther@suse.de> PR tree-optimization/96163 * tree-vect-slp.c (vect_schedule_slp_instance): Put new stmts at least after region begin. * g++.dg/vect/pr96163.cc: New testcase. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/96163] another ice in pass slp 2020-07-11 8:02 [Bug c++/96163] New: another ice in pass slp dcb314 at hotmail dot com ` (2 preceding siblings ...) 2020-07-13 14:50 ` cvs-commit at gcc dot gnu.org @ 2020-07-13 14:50 ` rguenth at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: rguenth at gcc dot gnu.org @ 2020-07-13 14:50 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96163 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] 5+ messages in thread
end of thread, other threads:[~2020-07-13 14:50 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2020-07-11 8:02 [Bug c++/96163] New: another ice in pass slp dcb314 at hotmail dot com 2020-07-13 7:59 ` [Bug tree-optimization/96163] " rguenth at gcc dot gnu.org 2020-07-13 8:42 ` rguenth at gcc dot gnu.org 2020-07-13 14:50 ` cvs-commit at gcc dot gnu.org 2020-07-13 14:50 ` rguenth at gcc dot gnu.org
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