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[Bug tree-optimization/87974] [9 Regression] ICE in vect_get_vec_def_for_stmt_copy
- From: "rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 14 Nov 2018 09:20:00 +0000
- Subject: [Bug tree-optimization/87974] [9 Regression] ICE in vect_get_vec_def_for_stmt_copy
- Auto-submitted: auto-generated
- References: <bug-87974-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87974
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Nov 14 09:19:28 2018
New Revision: 266099
URL: https://gcc.gnu.org/viewcvs?rev=266099&root=gcc&view=rev
Log:
2018-11-14 Richard Biener <rguenther@suse.de>
PR tree-optimization/87974
* tree-vect-loop.c (vectorizable_reduction): When computing
the vectorized reduction PHI vector type ignore constant
and external defs.
* g++.dg/opt/pr87974.C: New testcase.
Added:
trunk/gcc/testsuite/g++.dg/opt/pr87974.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-vect-loop.c