(simplify_plus_minus): Count CONSTs coming in and going out; we have
simplified things if we have more CONSTs going out even if we have the
same number of total terms.

From-SVN: r3787

(init_expmed): Always pass some insn to recog.
Set shift_cost[0], shiftadd_cost[0] and shiftsub_cost[0] to something
reasonable.
Compute zero_cost.
(enum alg_code): Remove alg_none; add alg_zero and alg_m.
(struct algorithm): Rename field COEFF to LOG.
(synth_mult): Use new ops alg_zero and alg_m for multiplication by zero and
one, respectively.
Use MIN when helpful.
Be consistent and don't test cost before recursive call.
Don't special-case shift counts of zero; already handled elsewhere.
(expand_mult): First operation is always alg_zero or alg_m; remaining
operations can't be one of those.
Use proper subtargets for computations.
Remove special-cases for shift counts of zero.
Track value computed so far and make REG_EQUAL notes.

From-SVN: r3786

From-SVN: r3785

(expand_assignment): Pass to_rtx's mode to expand_expr
when assigning a result_decl.
(expand_expr): For ERROR_MARK, give back 0 in TMODE if possible.

From-SVN: r3784

From-SVN: r3783

(current_function_prototype_file,
current_function_prototype_line): New variables.
(start_function): Set them.
(store_parm_decls): Use them for error and warning messages.

From-SVN: r3782

From-SVN: r3781

(unary_expr): Handle REALPART, IMAGPART.

From-SVN: r3780

From-SVN: r3779

(expand_float): When converting an unsigned type U to a smaller or equal-sized floating type F where there's no hardware support for unsigned-to-float conversion...

(expand_float): When converting an unsigned type U
to a smaller or equal-sized floating type F where there's no
hardware support for unsigned-to-float conversion, use a temporary
floating type larger than F if possible, since this avoids
rounding problems that are worst when U is just greater than
the maximum signed integer of the same size.

From-SVN: r3778

(main): Set output_file.
(my_exit): Delete output_file on failure.

From-SVN: r3777

From-SVN: r3776

From-SVN: r3775

From-SVN: r3774

From-SVN: r3773

	* pa.md (pre_ldwm, pre_stwm): Name these patterns to make
	generating them easier.
	*post_ldwm, post_stwm): New patterns.
	(add_high_const): New pattern.
	(return): New pattern.

From-SVN: r3772

	* pa.c (post_cint_operand): New function.
	(hppa-can_use_return_insn_p): Newfunction.

From-SVN: r3771

From-SVN: r3770

	* pa.h (IS_RELOADING_PSEUDO_P): New subroutine for EXTRA_CONSTRAINT.
	(EXTRA_CONSTRAINT): Use IS_RELOADING_PSEUDO_P.  Accept any MEM for
	`Q' constraint during hte reload pass.

From-SVN: r3769

	* pa.md (movqi, movhi, movsi, movdi, movsf, movdf): Remove support
	for GR<->FP copies.
	(fix_truncsfsi2, fix_truncdfsi2): Likewise.

From-SVN: r3768

	* pa.c (output_fp_move_double): Remove code to support GR<->FP
	copies.

From-SVN: r3767

	* pa.h (SECONDARY_MEMORY_NEEDED): Define.
	(SECONDARY_MEMORY_NEEDED_RTX): Define.

From-SVN: r3766

From-SVN: r3765

From-SVN: r3764

(STRUCT_VALUE_REGNUM): Add #undef.

From-SVN: r3763

(CHEAP_REG): Only call FIXED_REGNO_P for hard regs.
(fold_rtx): Clarify comments.

From-SVN: r3762

From-SVN: r3761

temporary allocation before building type.

From-SVN: r3760

From-SVN: r3759

From-SVN: r3758

From-SVN: r3757

From-SVN: r3756

(write_output): Use pfatal_with_name for errors.

From-SVN: r3755

clobber the whole register at the start.

From-SVN: r3754

From-SVN: r3753

(out_fname): Var now file-scope.

From-SVN: r3752

	* pa.h (EXTRA_CONSTRAINT, case 'S'): Do not accept CONSTANTP
	if TARGET_LONG_CALLS.

	* pa.h (EXTRA_CONSTRAINT): Merge strict and non-strict variants.
	Delete 'R' constraint.

From-SVN: r3751

(init_expmed): Delete unused variable I.
(enum alg_code): New tag alg_shift.  Document it.
(synth_mult): Delete unused variable N.  Handle new trivial case
first, for T <= 1.  Generalize shifting code to shift whenever a
number is even; use alg_shift for this.  Set best_alg->ops only in
trivial case.  Clean up cost calculation code for the `simple case' at
the end; use shiftadd_cost when appropriate.  Combine declarations of
Q and move to top of function.  Eliminate use of Q in factoring cases.
If we are getting too long a sequence for `struct algorithm' to
record, fail.
(expand_mult): Handle alg_shift instead of alg_add_t_m2 as first
operation.  In RLT emit loop, handle alg_shift; special case LOG == 0
for alg_add_t_m2 and alg_sub_t_m2.

From-SVN: r3750

From-SVN: r3749

(simplify_plus_minus): Remove last change.  Instead, count initial
operands and test against that count to see if we did anything.

From-SVN: r3748