https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91623
--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Author: jakub Date: Thu Nov 21 17:09:57 2019 New Revision: 278574 URL: https://gcc.gnu.org/viewcvs?rev=278574&root=gcc&view=rev Log: Backported from mainline 2019-09-01 Jakub Jelinek <ja...@redhat.com> PR middle-end/91623 * optabs.c (expand_vec_cond_expr): If op0 is a VECTOR_CST and only EQ_EXPR/NE_EXPR is supported, verify that op0 only contains zeros or negative elements and use NE_EXPR instead of LT_EXPR against zero vector. * gcc.target/i386/pr91623.c: New test. Added: branches/gcc-8-branch/gcc/testsuite/gcc.target/i386/pr91623.c Modified: branches/gcc-8-branch/gcc/ChangeLog branches/gcc-8-branch/gcc/optabs.c branches/gcc-8-branch/gcc/testsuite/ChangeLog
