https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83521
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Author: jakub Date: Fri Dec 22 08:51:26 2017 New Revision: 255969 URL: https://gcc.gnu.org/viewcvs?rev=255969&root=gcc&view=rev Log: Backported from mainline 2017-12-21 Jakub Jelinek <ja...@redhat.com> PR tree-optimization/83521 * tree-ssa-phiopt.c (factor_out_conditional_conversion): Use gimple_build_assign without code on result of fold_build1 (VIEW_CONVERT_EXPR, ...), as it might not create a VIEW_CONVERT_EXPR. * gcc.dg/pr83521.c: New test. Added: branches/gcc-7-branch/gcc/testsuite/gcc.dg/pr83521.c Modified: branches/gcc-7-branch/gcc/ChangeLog branches/gcc-7-branch/gcc/testsuite/ChangeLog branches/gcc-7-branch/gcc/tree-ssa-phiopt.c