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[Bug tree-optimization/81418] [8 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: Tue, 18 Jul 2017 07:26:38 +0000
- Subject: [Bug tree-optimization/81418] [8 Regression] ICE in vect_get_vec_def_for_stmt_copy
- Auto-submitted: auto-generated
- References: <bug-81418-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81418
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Jul 18 07:26:04 2017
New Revision: 250296
URL: https://gcc.gnu.org/viewcvs?rev=250296&root=gcc&view=rev
Log:
2017-06-18 Richard Biener <rguenther@suse.de>
PR tree-optimization/81418
* tree-vect-loop.c (vectorizable_reduction): Properly compute
vectype_in. Verify that with lane-reducing reduction operations
we have a single def-use cycle.
* gcc.dg/torture/pr81418.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/torture/pr81418.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-vect-loop.c