https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78546
--- Comment #19 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Author: jakub Date: Wed Dec 7 22:58:33 2016 New Revision: 243411 URL: https://gcc.gnu.org/viewcvs?rev=243411&root=gcc&view=rev Log: Backported from mainline 2016-11-28 Jakub Jelinek <ja...@redhat.com> PR rtl-optimization/78546 * simplify-rtx.c (neg_const_int): When negating most negative number in mode wider than HOST_BITS_PER_WIDE_INT, use simplify_const_unary_operation to produce CONST_DOUBLE or CONST_WIDE_INT. (simplify_plus_minus): Hanlde the case where neg_const_int doesn't return a CONST_INT. * gcc.dg/torture/pr78546-1.c: New test. * gcc.dg/torture/pr78546-2.c: New test. Added: branches/gcc-6-branch/gcc/testsuite/gcc.dg/torture/pr78546-1.c branches/gcc-6-branch/gcc/testsuite/gcc.dg/torture/pr78546-2.c Modified: branches/gcc-6-branch/gcc/ChangeLog branches/gcc-6-branch/gcc/simplify-rtx.c branches/gcc-6-branch/gcc/testsuite/ChangeLog
