[Bug tree-optimization/102832] [12 Regression] ICE in vect_create_partial_epilog with -O3 -msve-vector-bits=128
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102832 Richard Biener changed: What|Removed |Added Resolution|--- |FIXED Status|ASSIGNED|RESOLVED --- Comment #5 from Richard Biener --- Fixed.
[Bug tree-optimization/102832] [12 Regression] ICE in vect_create_partial_epilog with -O3 -msve-vector-bits=128
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102832 --- Comment #4 from CVS Commits --- The master branch has been updated by Richard Biener : https://gcc.gnu.org/g:da2bf62d9e2a25f2d6a99176144c250b51fbdee7 commit r12-7127-gda2bf62d9e2a25f2d6a99176144c250b51fbdee7 Author: Richard Biener Date: Wed Feb 9 10:55:18 2022 +0100 tree-optimization/104445 - check for vector extraction support This adds a missing check to epilogue reduction re-use, namely that we can do hi/lo extracts from the vector when demoting it to the epilogue vector size. I've chosen to add a can_vec_extract helper to optabs-query.h, in the future we might want to simplify the vectorizers life by handling vector-from-vector extraction via BIT_FIELD_REFs during RTL expansion via the mode punning when the vec_extract is not directly supported. I'm not 100% sure we can always do the punning of the vec_extract result to a vector mode of the same size, but then I'm also not sure how to check for that (the vectorizer doesn't in other places it does that at the moment, but I suppose we eventually just go through memory there)? 2022-02-09 Richard Biener PR tree-optimization/104445 PR tree-optimization/102832 * optabs-query.h (can_vec_extract): New. * optabs-query.cc (can_vec_extract): Likewise. * tree-vect-loop.cc (vect_find_reusable_accumulator): Check we can extract a hi/lo part from the larger vector, rework check iteration from larger to smaller sizes. * gcc.dg/vect/pr104445.c: New testcase.
[Bug tree-optimization/102832] [12 Regression] ICE in vect_create_partial_epilog with -O3 -msve-vector-bits=128
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102832 Richard Biener changed: What|Removed |Added Status|NEW |ASSIGNED Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org --- Comment #3 from Richard Biener --- My patch for PR104445 also fixes this one.
[Bug tree-optimization/102832] [12 Regression] ICE in vect_create_partial_epilog with -O3 -msve-vector-bits=128
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102832 Andrew Pinski changed: What|Removed |Added Ever confirmed|0 |1 Status|UNCONFIRMED |NEW Last reconfirmed||2021-10-22 --- Comment #2 from Andrew Pinski --- Confirmed.
[Bug tree-optimization/102832] [12 Regression] ICE in vect_create_partial_epilog with -O3 -msve-vector-bits=128
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102832 Richard Biener changed: What|Removed |Added Priority|P3 |P1 Target Milestone|--- |12.0
[Bug tree-optimization/102832] [12 Regression] ICE in vect_create_partial_epilog with -O3 -msve-vector-bits=128
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102832 Alex Coplan changed: What|Removed |Added CC||rsandifo at gcc dot gnu.org --- Comment #1 from Alex Coplan --- Started with r12-2739-g5a1017dc, FWIW: commit 5a1017dc305c49c59129d45536630d02dbc01c45 Author: Richard Sandiford Date: Wed Aug 4 16:52:09 2021 vect: Tweak comparisons with existing epilogue loops
