From-SVN: r1967

specification.

From-SVN: r1966

From-SVN: r1965

	Major rework to have caller-saves emit load/store double insns when
	possible and to avoid useless resaving of registers restored for
	source accesses only.
	* caller-save.c (toplevel): All arrays are multi-dimensional to
	hold information for multiple save/restore insns.  New variable
	hard_regs_need_restore.
	(choose_hard_reg_mode): New argument `nregs' indicating how many
	hard registers are desired.  All callers changed.
	(init_caller_save): Change initialization to handle multiple
	register saves.  A call-used register can not be live across
	if we can not find a single register mode to save it in.
	(multiple register saves are optional)
	(init_save_areas): Change initialization of regno_save_mem to
	handle multiple register saves.
	(setup_save_areas): Allocate space for consecutive hard registers
	in aligned consecutive memory locations.   When allocating space
	for consecutive hard registers, also initialize regno_save_mem
	for each hard register stored as a single word.
	(save_call_clobbered_regs): Initialize hard_regs_need_restore.
	Set hard_regs_need_restore to hard_regs_saved after crossing
	a call.  Also recompute n_regs_saved.  At the end of a basic block
	we need only restore registers in hard_regs_need_restore.
	(set_reg_live, clear_reg_live): Do the right thing for
	hard_regs_need_restore and hard_regs_saved.
	(restore_referenced_regs): Just return if X is a clobber.
	Test hard_regs_need_restore to determine when to restore a hard
	register from the save area.
	(insert_save_restore): Now returns the number of extra registers
	saved/restored.  New argument `maxrestore' which constrains how
	many hard registers should be restored.  All callers changed.
	Do stores of consecutive registers with double store insns if
	possible.  Else do them with single word insns. Likewise for
	loads, except constrained by maxrestore.  Set hard_regs_saved
	and hard_regs_need_restore appropriately to minimize useless
	saves into the save area.  Test against	hard_regs_need_restore
	when trying to restore multiple regs and similarly test against
	hard_regs_saved when storing multiple regs.

From-SVN: r1964

From-SVN: r1963

Add #ifdef INSN_SCHEDULING around variables only used
by schedule_insns.
(INSN_QUEUE_SIZE): Delete default definition.

From-SVN: r1962

Partially undo Mar 7 change.  Only call
emit_library_call with no_queue == 1 for const functions.

From-SVN: r1961

From-SVN: r1960

From-SVN: r1959

(current_block): New function.
(struct binding_level): New field this_block.
(poplevel): Use this_block if nonzero, rather than making new BLOCK.
(insert_block, delete_block): New functions.

From-SVN: r1958

(float*, fix*): Rewrite to match hardware; take/put
integer input/output from/to fp register instead of memory or
general register.  Delete 6 now obsolete combiner patterns.

From-SVN: r1957

From-SVN: r1956

(output_floatsisf2, output_floatsidf2, output_floatsitf2): Delete.

From-SVN: r1955

From-SVN: r1954

invoked	after "foo.h" has been included.

From-SVN: r1953

	(struct function_unit_op): Add issue_delay, conflict_exp, and
	issue_exp fields.  Drop busyexp field.
	(struct function_unit): Add needs_blockage_function,
	needs_range_function, issue_delay, and max_blockage fields.  Drop
	costexp, and busy delay fields.
	(enum operator): Add POS_MINUS_OP, EQ_OP, MIN_OP, RANGE_OP.
	(operate_exp): Implement new ops.
	(make_internal_attr): Set unsigned_p based on the value of SPECIAL.
	(write_attr_get): Function is unsigned when unsigned_p is true.
	(write_attr_valueq): Write hex value of large constants in a comment.
	(simplify_by_exploding): Check for EXP having no EQ_ATTR expressions
	and for all values as the default.
	(find_and_mark_used_attributes): Add TERMS and NTERMS parameters.
	(max_attr_value): Allow IF_THEN_ELSE.
	(simplify_knowing, write_complex_function, extend_range): New
	functions.
	(gen_unit): Use local variables to name the fields.  Change the
	meaning of busy-delay to issue-delay.
	(expand_units): Compute issue_exp.  Write attributes for computing
	`<name>_unit_blockage' and `<name>_unit_blockage_range' functions.
	Compute max_blockage, and the needs_*_function values.
	(write_function_unit_info): Write blockage function and conflict cost
	functions using write_complex_function.  Write new function_unit_desc
	fields.
(expand_units): Use the normalized values of the
	unit's CONDEXP and BUSYEXP.

From-SVN: r1952

	Pass CLOCK to schedule_insn.
	Compute the tail in the scheduling loop, not before it.
	Enable the stall code that advances the insn queue.
	Select the insn to schedule and block others with schedule_select.
	(adjust_priority): Renamed from launch_link.
	(schedule_insn): Renamed from launch_links.
(insn_queue): Use INSN_QUEUE_SIZE.

(insn_units, insn_blockage, insn_tick, unit_last_insn,
	unit_tick, unit_n_insns): New variables.
	(schedule_insns): Allocate and initialize insn_tick, insn_units, and
	insn_blockage.
	(insn_unit, blockage_range, clear_units, prepare_unit, schedule_unit,
	actual_hazard_this_instance, actual_hazard, potential_hazard,
	schedule_select): New functions.
	(schedule_block): Add dependencies to force insns to remain in order
	at the end of a block rather than relying on having the scheduler
	issue them in priority order.
(insn_cost): Add LINK and USED parameters.  All callers
	changed.  Supply an ADJUST_COST interface.
	(insn_cost): Make a dependence from a USE insn free.
	(priority): Clear the link cost adjustment bits.

From-SVN: r1951

	(write_units): Add blockage_function, blockage_range_function,
	max_blockage and max_issue_delay fields to struct function_unit_desc.
	Drop max_busy_cost field.  Write #defines for min/max blockage,
	issue delay, multiplicity, and simultaneity and for BLOCKAGE_BITS
	and INSN_QUEUE_SIZE.
	(main): Compute the new values.

From-SVN: r1950

From-SVN: r1949

	(unit attribute): Delete.
	(function units): Correct simultaneity values.  Break out
	independent units.  Add conflict matrix for the 88100 load double.

From-SVN: r1948

Merge FP_MUL, FP_DIV, and FP_SQRT into one function unit.

From-SVN: r1947

From-SVN: r1946

From-SVN: r1945

(delete_jump): Use delete_computation.

From-SVN: r1944

From-SVN: r1943

From-SVN: r1942

From-SVN: r1941

typo (e.g., `-v-E'); only when it's exactly "-v".

From-SVN: r1940

if staticp, but don't clear TREE_CONSTANT.

From-SVN: r1939

instead of using SUBST due to sharing.

(simplify_comparison): Correct test for sign extension when trying to
widen comparison.

From-SVN: r1938

moved down so that it occurs after call to `expand_cleanups'.

From-SVN: r1937

From-SVN: r1936

From-SVN: r1935

From-SVN: r1934

From-SVN: r1933

From-SVN: r1932

reorg.c (fill_simple_delay_slots): Always try to fill empty delay slots with insns from beyond the delay insn...

	* reorg.c (fill_simple_delay_slots): Always try to fill empty
	delay slots with insns from beyond the delay insn, even if
	optimize_skip was attempted.
	(fill_simple_delay_slots): When filling with insns from after the
	delay insn, make sure to always account for sets and references
	in the delay insn.

From-SVN: r1931

From-SVN: r1930

Use TREE_READONLY and TREE_THIS_VOLATILE, not TYPE_...

From-SVN: r1929

From-SVN: r1928