(expand_units): When calculate BLOCKAGE, reverse
terms to POS_MINUS_OP. Clarify comment before BLOCKAGE computation.
(write_complex_function): Use EXECUTING_INSN for first switch, and
CANDIDATE_INSN for second switch.
From-SVN: r6442
(TARGET_SWITCHES): Add new options -mapp-regs and -mno-app-regs.
(TARGET_DEFAULT): Add -mapp-regs.
(CONDITIONAL_REGISTER_USAGE): Make %g2, %g3, and %g4 be fixed when
the -mno-app-regs option is used.
From-SVN: r6440
(output_init_elements): Use FIELD instead of constructor_fields when
doing alignment and sizing.
(output_pending_init_elements): Don't blow up when writing other than
first field put haven't written anything yet. Update
constructor_bit_index when we emit a skip.
From-SVN: r6414
(xcoffout_begin_block): Don't emit a .bb for the
function level scope.
(xcoffout_end_block): Don't emit a .eb for the function level
scope.
From-SVN: r6399
