https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92645
--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> --- Author: rguenth Date: Tue Nov 26 08:32:38 2019 New Revision: 278719 URL: https://gcc.gnu.org/viewcvs?rev=278719&root=gcc&view=rev Log: 2019-11-26 Richard Biener <rguent...@suse.de> PR tree-optimization/92645 * tree-vect-slp.c (vect_build_slp_tree_2): For unary ops do not build the operation from scalars if the operand is. * gcc.target/i386/pr92645.c: New testcase. Added: trunk/gcc/testsuite/gcc.target/i386/pr92645.c Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-vect-slp.c