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| author | Wilco Dijkstra <wdijkstr@arm.com> | 2017-10-24 16:58:02 +0000 |
|---|---|---|
| committer | Wilco Dijkstra <wilco@gcc.gnu.org> | 2017-10-24 16:58:02 +0000 |
| commit | acea40ac746971daf5b9e6091b908653407b86ea (patch) | |
| tree | 99bc19b4dda4e1334a78125b182efe17320df8bd /gcc/fold-const.c | |
| parent | 02b0c08c2c42c6e4e53525e14953ad4099536773 (diff) | |
| download | gcc-acea40ac746971daf5b9e6091b908653407b86ea.zip gcc-acea40ac746971daf5b9e6091b908653407b86ea.tar.gz gcc-acea40ac746971daf5b9e6091b908653407b86ea.tar.bz2 | |
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.
From-SVN: r254052
Diffstat (limited to 'gcc/fold-const.c')
0 files changed, 0 insertions, 0 deletions