https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88483
--- Comment #1 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> --- Author: hjl Date: Fri Dec 14 12:38:04 2018 New Revision: 267133 URL: https://gcc.gnu.org/viewcvs?rev=267133&root=gcc&view=rev Log: x86: Don't use get_frame_size when finalizing stack frame get_frame_size () returns used stack slots during compilation, which may be optimized out later. Since ix86_find_max_used_stack_alignment is called by ix86_finalize_stack_frame_flags to check if stack frame is required, there is no need to call get_frame_size () which may give inaccurate final stack frame size. Tested on AVX512 machine configured with --with-arch=native --with-cpu=native gcc/ PR target/88483 * config/i386/i386.c (ix86_finalize_stack_frame_flags): Don't use get_frame_size (). gcc/testsuite/ PR target/88483 * gcc.target/i386/stackalign/pr88483.c: New test. Added: trunk/gcc/testsuite/gcc.target/i386/stackalign/pr88483.c Modified: trunk/gcc/ChangeLog trunk/gcc/config/i386/i386.c trunk/gcc/testsuite/ChangeLog
