path: root/gcc/ChangeLog.rewrite

2003-02-12  Richard Sandiford  <rsandifo@redhat.com>

	* config/mips/mips.c (mips_legitimize_const_move): New, extracted
	from mips_legitimize_move.  Legitimize constant pool references.
	(mips_legitimize_move): Call mips_legitimize_const_move.  Attach
	a REG_EQUAL note to the last instruction.

2003-02-11  Richard Sandiford  <rsandifo@redhat.com>

	* config/mips/mips-protos.h (mips_simplify_dwarf_addr): Declare.
	* config/mips/mips.h (TARGET_EXPLICIT_RELOCS, TARGET_NEWABI): New.
	(ASM_SIMPLIFY_DWARF_ADDR): Define to mips_simplify_dwarf_addr.
	(EXTRA_CONSTRAINT): Allow symbolic call addresses for TARGET_ABICALLS.
	* config/mips/mips.md (UNSPEC_HIGH): New constant.
	(UNSPEC_RELOC_GPREL16): Rename to...
	(RELOC_GPREL16): ...this.
	(RELOC_GOT_HI, RELOC_GOT_LO, RELOC_GOT_PAGE, RELOC_GOT_DISP): New.
	(RELOC_CALL16, RELOC_CALL_HI, RELOC_CALL_LO): New.
	(macro_calls): New attribute.
	(length): Use it to set the default length of calls.  Don't allow
	calls to have delay slots if macro_calls is "yes".
	(luisi, luidi): New patterns.
	(lowsi, lowdi): Use '%R' to print the relocation.
	(lowdi_extend): Remove.
	(loadgp): Remove mode from operand 0.  Use '%0' instead of '%a0'.
	(call_internal): Merge alternatives.  Always use "jal".
	(call_value_internal, call_value_multiple_internal): Likewise.
	(reloc_gprel16): Remove.
	* config/mips/mips.c (mips_got_alias_set): New variable.
	(mips_classify_constant): Handle the new relocation constants.
	(mips_classify_symbol): Reverse the sense of SYMBOL_REF_FLAG for PIC.
	(mips_symbolic_address_p): Return false if generating explicit relocs.
	Otherwise allow local PIC symbols to have an offset.
	(mips_splittable_symbol_p): New function.
	(mips_classify_address): Use it to check whether a LO_SUM is valid.
	(mips_const_insns): Always accept HIGH.
	(call_insn_operand): Don't accept global symbols if using explicit
	relocs.
	(move_operand): Don't accept HIGH when generating PIC.
	(mips_reloc, mips_lui_reloc): New functions.
	(mips_force_temporary): Remove MODE argument.  Expect VALUE to
	be a valid right-hand-side for a SET pattern.
	(mips_load_got, mips_load_got16, mips_load_got32): New functions.
	(mips_emit_high): New function.
	(mips_legitimize_symbol): Use mips_reloc for the mips16 gp-relative
	case.  Use mips_splittable_symbol_p to check whether a LO_SUM
	address should be used.  Use mips_emit_high to generate the
	high part of such an address.  Adjust the global symbol + offset
	case to match the change to mips_force_temprorary.
	(mips_legitimize_move): Shuffle call to mips_legitimize_symbol.
	If generating explicit-reloc PIC, load the address of global
	symbols from the GOT.  Use mips_emit_high to emit the high part
	of an address.
	(mips_simplify_dwarf_addr): New function.
	(mips_move_1word): Use lwc1 instead of l.s and swc1 instead of s.s.
	(mips_move_2words): Likewise ldc1/l.d and sdc1/s.d if TARGET_64BIT.
	(mips_expand_call): Load the addresses of global functions using
	%call* relocs if generating explicit-reloc PIC.  Don't generate
	an exception_receiver pattern.
	(override_options): Initialize mips_got_alias_set.
	(print_relocation): Remove in favour of...
	(mips_reloc_string): ...this new function.
	(print_operand): Handle '%R'.  Use mips_reloc_string.
	(print_operand_address): Use print_operand to print the symbolic
	part of a LO_SUM address.
	(mips_output_function_prologue): Use .cprestore, reverting last patch.
	(mips_encode_section_info): Factor out DECL_RTL accesses.  Reverse
	sense of SYMBOL_REF_FLAG for PIC, using binds_local_p to check
	for local symbols.

2003-02-02  Eric Christopher  <echristo@redhat.com>

	* config/mips/mips.c (mips_sign_extend): Remove.
	* config/mips/mips-protos.h: Ditto.
	* config/mips/mips.md (movdi_internal2_extend): Remove.
	(extendsidi2): Fix mode of convert_memory_address.

2003-01-24  Eric Christopher  <echristo@redhat.com>

	* config/mips/mips.md: Rewrite zero_extend* and extend*
	patterns. Use explicit instructions and split after reload
	for register extensions.
	(ashlsi3_internal1_extend): New combiner pattern for
	shift and extend combinations.
	* config/mips/mips.h: Change Pmode back to ptr_mode
	for performance enhancement.
	* combine.c (expand_compound_operation): Make sure
	that zero_extend operation is profitable.

2003-01-14  Richard Sandiford  <rsandifo@redhat.com>

	* config/mips/mips.h (TRAMPOLINE_TEMPLATE): Make size of stored
	addresses depend on ptr_mode rather than Pmode.
	(TRAMPOLINE_SIZE, TRAMPOLINE_ALIGNMENT): Update acoordingly.
	(INITIALIZE_TRAMPOLINE): Rework to handle Pmode != ptr_mode.
	(CASE_VECTOR_MODE): Use ptr_mode for !TARGET_MIPS16.
	(ASM_OUTPUT_ADDR_VEC_ELT): Update accordingly.
	* config/mips/mips.md (tablejump): Likewise.  Remove Pmode
	condition for selecting cpaddsi or cpadddi: use cpadd instead.
	(tablejump_internal1): Remove condition.
	(tablejump_internal2): Change condition to TARGET_64BIT.
	(cpaddsi): Rename to...
	(cpadd): ...this.
	(cpadddi): Remove.

2003-01-09  Richard Sandiford  <rsandifo@redhat.com>

	* config/mips/mips-protos.h (mips16_constant_after_function_p,
	mips_address_cost, mips_check_split, double_memory_operand,
	mips16_gp_offset, mips16_gp_offset_p, mips16_constant,
	pic_address_needs_scratch, symbolic_operand): Remove declarations.
	(mips_legitimate_address_p): Return bool.
	(mips_address_insns, mips_fetch_insns, mips_const_insns,
	mips_legitimize_address, mips_legitimize_move,
	mips_expand_call): Declare.
	(mips_return_addr): Move outside #ifdef RTX_CODE.

	* config/mips/mips.h (ABI_HAS_64BIT_SYMBOLS): New macro.
	(PIC_FN_ADDR_REG): New reg_class.
	(REG_CLASS_NAMES, REG_CLASS_CONTENTS): Add corresponding entries.
	(GR_REG_CLASS_P): True for PIC_FN_ADDR_REG.
	(SMALL_OPERAND, SMALL_OPERAND_UNSIGNED, LUI_OPERAND,
	CONST_HIGH_PART, CONST_LOW_PART, LUI_INT): New macros.
	(SMALL_INT, SMALL_INT_UNSIGNED, CONST_OK_FOR_LETTER_P): Use new macros.
	(EXTRA_CONSTRAINTS): Give new meanings to Q, R and S.
	(CONSTANT_ADDRESS_P): Use mips_legitimate_address_p.
	(LEGITIMATE_PIC_OPERAND): Undefine.
	(LEGITIMATE_CONSTANT_P): Use mips_const_insns.
	(LEGITIMIZE_ADDRESS): Use mips_legitimize_address.
	(CONSTANT_AFTER_FUNCTION_P): Remove definition in #if 0 block.
	(FUNCTION_MODE): Change to SImode.
	(CONST_COSTS): Use mips_const_insns to calculate the cost of
	most constants.  Treat const_artih_operands specially if they
	occur in a PLUS or MINUS.
	(CONSTANT_POOL_COST): New macro.
	(RTX_COSTS): Use mips_address_insns for MEMs, with a base cost of 2.
	Add LO_SUM handling.
	(ADDRESS_COST): Undefine.
	(PREDICATE_CODES): Add symbolic_operand and const_arith_operand.
	Add CONST to the list of codes for arith_operand.  Add LABEL_REF
	to call_insn_operand and remove CONST_INT.

	* config/mips/mips.c: Include integrate.h.
	(SINGLE_WORD_MODE_P): New macro.
	(mips_constant_type, mips_symbol_type, mips_address_type): New enums.
	(mips_constant_info, mips_address_info): New structs.
	(mips_regno_to_class): Map $25 to PIC_FN_ADDR_REG.
	(mips_classify_constant, mips_classify_symbol,
	mips_valid_base_register_p, mips_symbolic_address_p,
	mips_classify_address, mips_symbol_insns,
	mips16_unextended_reference_p, mips_address_insns, mips_const_insns,
	mips_fetch_insns, mips_force_temporary, mips_add_offset,
	mips_legitimize_symbol, mips_legitimize_address, mips_legitimize_move,
	mips_print_relocation): New functions.
	(const_arith_operand): New operand predicate.
	(arith_operand): Use it.
	(mips_const_double_ok, mips16_simple_memory_operand,
	simple_memory_operand, double_memory_operand, mips_check_split,
	mips_address_cost, pic_address_needs_scratch, mips16_gp_offset,
	mips16_gp_offset_p, mips16_output_gp_offset,
	mips16_constant_after_function_p, mips16_constant): Remove.
	(call_insn_operand): Be more fussy about symbolic constants.
	Use register_operand.
	(move_operand): Use mips_symbolic_address_p to check symbolic
	operands and general_operand to check the rest.
	(symbolic_operand): Use mips_classify_constant.
	(mips_legitimate_address_p): Use mips_classify_address.
	(mips_move_1word): Combine handling of symbolic addresses.
	Remove special treatment of gp-relative loads for TARGET_MIPS16.
	(move_move_2words): Likewise.  Assume addresses are offsettable
	if they need to refer to more than one word.  Add HIGH handling.
	(mips_restore_gp): Use ptr_mode for the GP save slot.
	(mips_expand_call): New function, combining the old mips.md
	call and call_internal define_expands.  If the address isn't
	a call_insn_operand, force it into a register.  For SVR4 PIC,
	emit an exception_receiver instruction after the call.
	(override_options): Only override flag_pic for TARGET_ABICALLS
	if it is currently zero.  Allow mips_split_addresses when
	Pmode == DImode too, except when ABI_HAS_64BIT_SYMBOLS.
	Add new register class letter, 'c'.
	(print_operand): Use mips_classify_constant for constant operands.
	(print_operand_address): Use mips_classify_address.
	(mips_output_function_prologue): Don't use .cprestore.
	(mips_expand_epilogue): For TARGET_MIPS16, only adjust the stack
	via the frame pointer if current_function_calls_eh_return.
	(mips_encode_section_info): For TARGET_ABICALLS, use SYMBOL_REF_FLAG
	to mark whether a symbol is local or global.
	(build_mips16_call_stub): Expect the address of the function rather
	than a MEM reference to it.  Update call generation sequences.
	(mips16_optimize_gp): Remove Pmode checks.  Temporarily disable
	small-data adjustments.

	* config/mips/mips.md: Remove 'R'/'m' memory distinction.  Use default
	length for loads and stores.
	(UNSPEC_CPADD, UNSPEC_RELOC_GPREL16): New constants.
	(define_attr type): Add const and prefetch.
	(define_attr length): Use mips_const_insns for const instructions.
	Use mips_fetch_insns for load and store instructions.
	(define_attr single_insn): New.
	(define_attr can_delay): Use it.
	(define_attr abicalls): Remove.
	(define_delay): Use can_delay.  Always allow calls to have delay slots.
	(addsi3_internal_2): Add 'Q' constraint.
	(movsi_ulw, movsi_usw, movdi_uld, movdi_usd): Set length to 8.
	(high): Remove.
	(lowsi): Renamed from low.
	(lowdi): New pattern.
	(movdi, movsi): Use mips_legitimize_move.  Remove define_split.
	(lwxc1, ldxc1, swxc1, sdxc1): Set length to 4.
	(loadgp): Change operand 0 to an immediate_operand.
	(tablejump): Use the same patterns for SVR4 PIC but emit a cpadd
	beforehand.
	(cpaddsi, cpadddi): New patterns.
	(tablejump_internal3, tablejump_internal4): Remove define_expands
	and associated define_splits.
	(call, call_value): Use mips_expand_call.
	(call_internal): New, replacing all existing call_internal* insns.
	(call_value_internal): Likewise call_value_internal*.
	(call_value_multiple_internal): Likewise call_value_multiple_internal*.
	(untyped_call): Remove if (operands[0]) magic.
	(prefetch_si_address, prefetch_si): Change type to "prefetch".
	(prefetch_di_address, prefetch_di): Likewise.
	(leasi, leadi): Remove.
	(reloc_gprel16): New.

	* config/mips/5400.md (ir_vr54_hilo): Include const type.
	* config/mips/5500.md (ir_vr55_hilo): Likewise.
	* config/mips/sr71k.md (ir_sr70_hilo): Likewise.

2003-01-08  Eric Christopher  <echristo@redhat.com>

	* config.gcc (mipsisa32*): Change ABI_MEABI to ABI_EABI.
	* config/mips/elf.h (STARTFILE_SPEC): Remove ABI_MEABI references and
	configure check for libgloss.
	* config/mips/elf64.h: Ditto.
	* config/mips/mips.c: Remove ABI_MEABI.
	* config/mips/mips.h: Ditto.

2002-11-05  Richard Sandiford  <rsandifo@redhat.com>

	Fix merge fallout.
	* config/mips/mips.md (mul_acc_si): Reapply 2002-10-16 change.
	(muldi3_internal): Remove outdated comment.
	(*muls_di, *umuls_di): Fix comment and 64-bitness.
	(*smsac_di, *umsac_di): Likewise.  Reformat.
	(umulsi3_highpart): Minor formatting tweaks.
	(umulsi3_highpart_internal): Use only if !ISA_HAS_MULHI.  Remove
	redundant scratch operand.  Minor formatting tweak.
	(umulsi3_highpart_mulhi_internal): Use for !TARGET_64BIT as well.
	(umulsi3_highpart_neg_mulhi_internal): Likewise.  Fix asm template.
	(smulsi3_highpart): As for the unsigned version.
	(smulsi3_highpart_internal): Likewise.
	(smulsi3_highpart_mulhi_internal): Likewise.
	(smulsi3_highpart_neg_mulhi_internal): Likewise.
	(smuldi3_highpart, umuldi3_highpart): Minor formatting tweaks.
	(*smul_acc_di): Remove duplicated pattern.
	(*umul_acc_di, *smul_acc_di): Reapply 2002-10-16 change.
	(anddi3) [unnamed mips16 pattern]: Remove reintroduced length.
	(zero_extendsidi2_internal2): Remove new, but commented-out pattern.

2002-10-22  Eric Christopher  <echristo@redhat.com>

        * config/mips/mips-protos.h (mips_return_addr): New.
        * config/mips/mips.c (mips_return_addr): New.
        (movdi_operand): Remove.
        (se_register_operand): Ditto.
        (se_reg_or_0_operand): Ditto.
        (se_uns_arith_operand): Ditto.
        (se_arith_operand): Ditto.
        (se_nonmemory_operand): Ditto.
        (extend_operator): Ditto.
        (highpart_shift_operator): Ditto.
        (mips_initial_elimination_offset): Remove return address pointer
        elimination.
        (mips_reg_names): Remove $ra.
        (mips_regno_to_class): Ditto.
        * config/mips/mips.h (POINTER_SIZE): Define based on TARGET_LONG64
        and TARGET_64BIT.
        (POINTER_BOUNDARY): Remove.
        (POINTERS_EXTEND_UNSIGNED): Define to 0.
        (PROMOTE_MODE): Promote to Pmode.
        (SHORT_IMMEDIATES_SIGN_EXTEND): Define.
        (Pmode): Define to TARGET_64BIT.
        (FUNCTION_MODE): Define as Pmode.
        (mips_args): Remove deleted functions.
        (SIZE_TYPE): Depend on POINTER_SIZE.
        (PTRDIFF_TYPE): Ditto.
        (FIXED_REGISTERS): Fix extra registers.
        (CALL_USED_REGISTERS): Ditto.
        (CALL_REALLY_USED_REGISTERS): Ditto.
        (RAP_REG_NUM): Remove.
        (RETURN_ADDRESS_POINTER_REGNUM): Ditto.
        (RETURN_ADDR_RTX): Define to mips_return_addr.
        (ELIMINABLE_REGS): Remove RETURN_ADDRESS_POINTER_REGNUM.
        (CAN_ELIMINATE): Ditto.
        * config/mips/mips.md: For DImode patterns, take into account
        deletions above. Split mulsidi patterns into sign_extend and
	zero_extend.

2002-10-16  Richard Sandiford  <rsandifo@redhat.com>
	    Michael Meissner  <meissner@redhat.com>

	* config/mips/mips.h (ISA_HAS_MACC): True for normal-mode vr4120 code.
	* config/mips/mips.md (mulsi3_mult3): Add a define_peephole2 to
	mop up unnecessarly moves through LO.
	(*mul_acc_si): Remove vr5400 and vr5500 handling from here.
	(*macc): New pattern for ISA_HAS_MACC.  Add define_peephole2s to
	change mtlo/macc sequences into mul/add sequences when a three-
	address mul is available.
	(*macc2): New pattern.  Add a define_peephole2 to generate it.
	(*mul_sub_si): Fix contraint for operand 5.
	(*muls): Use in 32-bit code as well.
	(*msac): Likewise.  Use msub instead of msac in vr5500 code
	if the destination is LO.  Remove duplicate define_split.
	(*muls_di): Use only in 32-bit code.  Adjust rtl accordingly.
	(*msac_di): Likewise.  Fix formatting.
	(smulsi3_highpart, umulsi3_highpart): Use mulhi in 32-bit code too.
	(*xmulsi3_highpart_internal): Use only if !ISA_HAS_MULHI.
	(*xmulsi3_highpart_mulhi): Use even if !TARGET_64BIT.
	(*xmulsi3_neg_highpart_mulhi): Likewise.
	(*mul_acc_64bit_di): Remove.
	(*mul_acc_di): Use only in 32-bit code.  Handle ISA_HAS_MACC as well.

2002-10-14  Richard Sandiford  <rsandifo@redhat.com>

	* config/mips/vr.h (DRIVER_SELF_SPECS): Define.
	* config/mips/t-vr (MULTILIB_OPTIONS): Remove mlong32.
	(MULTILIB_DIRNAMES): Remove long32.
	(MULTILIB_EXCEPTIONS): Don't build -mabi=32 -mgp32 multilibs.
	(MULTILIB_REDUNDANT_DIRS): Remove.

2002-10-14  Richard Sandiford  <rsandifo@redhat.com>

	* doc/tm.texi (DRIVER_SELF_SPECS): Document.
	* gcc.c (driver_self_specs): New variable.
	(do_self_spec): New function.
	(main): Use it to process driver_self_specs.

2002-10-09  Richard Sandiford  <rsandifo@redhat.com>

	* config/mips/mips.md (one_cmpldi2): Use only if TARGET_64BIT.
	Remove DImode define_split for !TARGET_64BIT.
	(anddi3): Remove !TARGET_64BIT support from here as well.
	Change operand 2's predicate to se_uns_arith_operand.
	Add constant alternatives to define_insn.
	(iordi3, xordi3, *nordi3): Likewise.
	(anddi3_internal1, xordi3_immed): Remove.

2002-10-01  Richard Sandiford  <rsandifo@redhat.com>

	* config/mips/mips.h (PROCESSOR_R4121): Rename to PROCESSOR_R4120.
	(TARGET_MIPS4121): Rename to TARGET_MIPS4120.
	* config/mips/mips.c (mips_cpu_info): Rename vr4121 to vr4120.
	* config/mips/mips.md: Apply same renaming here.

2002-10-01  Richard Sandiford  <rsandifo@redhat.com>

	* config/mips/mips.c (PROCESSOR_R4320, TARGET_MIPS4320): Remove.
	(GENERATE_MULT3_SI): Remove use of TARGET_MIPS4320.
	* config/mips/mips.c (mips_cpu_info): Remove vr4320 entry.
	* config/mips/mips.md (define_attr cpu): Remove r4320.
	Remove vr4320 scheduler and uses of TARGET_MIPS4320.

2002-10-01  Richard Sandiford  <rsandifo@redhat.com>

	* config/mips/mips.c (mips16_strings): New variable.
	(mips_output_function_epilogue): Clear the SYMBOL_REF_FLAG of every
	symbol in mips16_strings.  Free the list.
	(mips_encode_section_info): Keep track of local strings.

2002-10-01  Richard Sandiford  <rsandifo@redhat.com>

	* config/mips/mips.md (bunge, bltgt, bungt): New define_expands.
	(sordered_df, sordered_sf): Remove.
	* config/mips/mips.c (get_float_compare_codes): New fn.
	(gen_int_relational, gen_conditional_move): Use it.

2002-10-01  Richard Sandiford  <rsandifo@redhat.com>

	* config/mips/mips-protos.h (mips_emit_fcc_reload): Declare.
	* config/mips/mips.h (PREDICATE_CODES): Add fcc_register_operand.
	* config/mips/mips.c (fcc_register_operand): New function.
	(mips_emit_fcc_reload): New function, extracted from reload_incc.
	(override_options): Allow TFmode values in float registers
	if ISA_HAS_8CC.
	* cnfig/mips/mips.md (reload_incc): Change destination prediate
	to fcc_register_operand.  Remove misleading source constraint.
	Use mips_emit_fcc_reload.
	(reload_outcc): Duplicate reload_incc.