https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60580
--- Comment #10 from Wilco <wilco at gcc dot gnu.org> --- Author: wilco Date: Fri Nov 3 15:01:10 2017 New Revision: 254377 URL: https://gcc.gnu.org/viewcvs?rev=254377&root=gcc&view=rev Log: PR60580: Fix frame pointer option magic To fix PR60580 simplify the logic in aarch64_override_options_after_change_1 (). If the frame pointer is enabled, set it to a special value that behaves similar to frame pointer omission. If we don't do this all leaf functions will get a frame pointer even if flag_omit_leaf_frame_pointer is set. If flag_omit_frame_pointer has this special value, we must force the frame pointer if not in a leaf function. We also need to force it in a leaf function if flag_omit_frame_pointer is not set or if LR is used. Doing this allows both -fomit-frame-pointer and -fomit-leaf-frame-pointer to be independently set and changed in each function with the expected behaviour. gcc/ PR middle-end/60580 * config/aarch64/aarch64.c (aarch64_frame_pointer_required) Check special value of flag_omit_frame_pointer. (aarch64_can_eliminate): Likewise. (aarch64_override_options_after_change_1): Simplify handling of -fomit-frame-pointer and -fomit-leaf-frame-pointer. Modified: branches/gcc-7-branch/gcc/ChangeLog branches/gcc-7-branch/gcc/config/aarch64/aarch64.c
