https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77308
Bernd Edlinger <bernd.edlinger at hotmail dot de> changed:
What |Removed |Added
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CC| |bernd.edlinger at hotmail dot
de
--- Comment #3 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
(In reply to Andrew Pinski from comment #1)
> Does -fno-schedule-insns help? Sometimes the scheduler before the register
> allocator causes register pressure and forces more register spills.
Yes, with -fno-schedule-insns it is a little bit smaller:
sha512_block_data_order:
@ Function supports interworking.
@ args = 0, pretend = 0, frame = 3472
@ frame_needed = 0, uses_anonymous_args = 0
push {r4, r5, r6, r7, r8, r9, r10, fp, lr}
sub sp, sp, #3472
sub sp, sp, #4
but it could be worse :-)
with -fno-ira-share-spill-slots:
sha512_block_data_order:
@ Function supports interworking.
@ args = 0, pretend = 0, frame = 6640
@ frame_needed = 0, uses_anonymous_args = 0
push {r4, r5, r6, r7, r8, r9, r10, fp, lr}
sub sp, sp, #6592
sub sp, sp, #52
