https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84071
--- Comment #13 from Eric Botcazou <ebotcazou at gcc dot gnu.org> --- Author: ebotcazou Date: Wed Jan 31 10:08:08 2018 New Revision: 257226 URL: https://gcc.gnu.org/viewcvs?rev=257226&root=gcc&view=rev Log: PR rtl-optimization/84071 * combine.c (record_dead_and_set_regs_1): Record the source unmodified for a paradoxical SUBREG on a WORD_REGISTER_OPERATIONS target. Added: branches/gcc-7-branch/gcc/testsuite/gcc.c-torture/execute/20180131-1.c - copied unchanged from r257224, trunk/gcc/testsuite/gcc.c-torture/execute/20180131-1.c Modified: branches/gcc-7-branch/gcc/ChangeLog branches/gcc-7-branch/gcc/combine.c branches/gcc-7-branch/gcc/testsuite/ChangeLog