https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83735
--- Comment #10 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> --- Author: hjl Date: Wed Jan 10 15:37:49 2018 New Revision: 256436 URL: https://gcc.gnu.org/viewcvs?rev=256436&root=gcc&view=rev Log: i386: Also adjust stack frame for stack slot alignment We should also adjust stack_realign_offset for the largest alignment of stack slot actually used when stack realignment isn't needed. This is required to keep stack frame properly aligned to satisfy the largest alignment of stack slots. Tested on Linux/i686 and Linux/x86-64. gcc/ PR target/83735 * config/i386/i386.c (ix86_compute_frame_layout): Always adjust stack_realign_offset for the largest alignment of stack slot actually used. (ix86_find_max_used_stack_alignment): New function. (ix86_finalize_stack_frame_flags): Use it. Set max_used_stack_alignment if we don't realign stack. * config/i386/i386.h (machine_function): Add max_used_stack_alignment. gcc/testsuite/ PR target/83735 * gcc.target/i386/pr83735.c: New test. Added: trunk/gcc/testsuite/gcc.target/i386/pr83735.c Modified: trunk/gcc/ChangeLog trunk/gcc/config/i386/i386.c trunk/gcc/config/i386/i386.h trunk/gcc/testsuite/ChangeLog
