PR target/38288
From David Binderman <dcb314@hotmail.com>:
* gcc/config/i386/i386.c (ix86_function_regparm): Remove useless
local variable f. Remove stale comments.
(ix86_compute_frame_layout): Remove useless local variable total_size.
Remove #if 0'd code.
(legitimate_address_p): Remove useless local variables
reason_rtx and reason.
(ix86_split_copysign_const): Remove useless local variable op1.
(scale_counter): Remove useless local variable piece_size_mask.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@151854 138bc75d-0d04-0410-961f-82ee72b054a4