* config/avr/avr-protos.h (avr_output_bld): New.
(out_shift_with_cnt): Add t_len argument.
* config/avr/avr.c (avr_num_arg_regs): Remove -mpack-args.
(output_movqi, output_movhi, output_movsisf): Optimize loading
any constant with exactly one bit set to NO_LD_REGS.
(out_shift_with_cnt): Optimize output code for size or speed,
depending on optimize_size. Handle small shift counts as well
(if not hand-optimized in ?sh??i3_out). Shifts can be done
with or without a scratch register, with help of __tmp_reg__
or __zero_reg__ if necessary. Add T_LEN argument to pass the
length of TEMPLATE in words, return total insn length in *LEN.
(ashlqi3_out, ashrqi3_out, lshrqi3_out): Change all calls to
out_shift_with_cnt to work with the above change.
(ashlhi3_out, ashlsi3_out, ashrhi3_out, ashrsi3_out, lshrhi3_out,
lshrsi3_out): Likewise. Optimize more known shift count cases.
Remove cases already well optimized in out_shift_with_cnt.
(avr_output_bld): New function.
* config/avr/avr.h (MASK_PACK_ARGS, TARGET_PACK_ARGS): Remove.
(TARGET_SWITCHES): Remove -mpack-args backward compatibility.
* config/avr/avr.md (*reload_inqi, *reload_inhi, *reload_insi):
Add reload_completed to insn condition - only for peepholes.
(ashlqi3, ashrqi3, lshrqi3): Correct insn length for shift counts
in a register or memory.
(ashlhi3, ashlsi3, ashrhi3, ashrsi3, lshrhi3, lshrsi3): Likewise.
Do not require a scratch register.
(*ashlhi3_const, *ashlsi3_const, *ashrhi3_const, *ashrsi3_const,
*lshrhi3_const, *lshrsi3_const): New insns and matching peepholes.
Optimize shifts by known count using a scratch register, but only
if one is still available after register allocation.
From-SVN: r36963
