https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77439
Richard Earnshaw <rearnsha at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2016-09-02
Ever confirmed|0 |1
--- Comment #2 from Richard Earnshaw <rearnsha at gcc dot gnu.org> ---
I'm not sure why the epilogue generates this sequence. For this particular
instance we could generate
sub sp, fp, #36
vldm sp!, {d8}
ldmfd sp, {r4, r5, r6, r7, fp, sp, lr}
bx ip
And save an instruction as well as keeping IP clear, but I've not looked to see
if there are other complications that prevent this in the more general case.
Note that
ldmfd sp, {r4, r5, r6, r7, fp, sp, lr}
has been deprecated in the ARM Architecture and so -mapcs-frame is consequently
also deprecated.
