* cfgrtl.c (purge_dead_edges): Set BB_DRITY flags if edge has been
removed; fix return value.
* combine.c (combine_instructions): Dirtify blocks where we failed to
update liveness; purge dead edges; use update_life_info_in_dirty_blocks.
* toplev.c (rest_of_compilation): Do not purge_dead_edges after combine.
From-SVN: r50454
* defaults.h (MODE_HAS_NANS, MODE_HAS_INFINITIES): New.
(MODE_HAS_SIGNED_ZEROS, MODE_HAS_SIGN_DEPENDENT_ROUNDING): New.
* flags.h (HONOR_NANS, HONOR_INFINITIES, HONOR_SIGNED_ZEROS): New.
(HONOR_SIGN_DEPENDENT_ROUNDING): New.
* builtins.c (expand_builtin_mathfn): Use HONOR_NANS.
* c-common.c (truthvalue_conversion): Reduce x - y != 0 to x != y
unless x and y could be infinite.
(expand_unordered_cmp): New, mostly split from expand_tree_builtin.
Check that the common type of both arguments is a real, even for
targets without unordered comparisons. Allow an integer argument
to be compared against a real.
(expand_tree_builtin): Use expand_unordered_cmp.
* combine.c (combine_simplify_rtx): Use the new HONOR_... macros.
* cse.c (fold_rtx): Likewise. Fix indentation.
* fold-const.c (fold_real_zero_addition_p): New.
(fold): Use it, and the new HONOR_... macros.
* ifcvt.c (noce_try_minmax): Use the new HONOR_... macros.
* jump.c (reversed_comparison_code_parts): After searching for
the true comparison mode, use HONOR_NANS to decide whether it
can be safely reversed.
(reverse_condition_maybe_unordered): Remove IEEE check.
* simplify-rtx.c (simplify_binary_operation): Use the new macros
to decide which simplifications are valid. Allow the following
simplifications for IEEE: (-a + b) to (b - a), (a + -b) to (a - b),
and (a - -b) to (a + b).
(simplify_relational_operation): Use HONOR_NANS.
* doc/tm.texi: Document the MODE_HAS_... macros.
From-SVN: r50401
* doc/rtl.texi (SUBREG_PROMOTED_UNSIGNED_P): Change definition
to take ptr_extend into account as third type of extension.
(SUBREG_PROMOTED_UNSIGNED_SET): Definition of new macro to set bit
fields used by SUBREG_PROMOTED_UNSIGNED_P.
* rtl.h (SUBREG_PROMOTED_UNSIGNED_SET): New macro.
(SUBREG_PROMOTED_UNSIGNED_P): Change to return -1 as well as 0 or 1.
* calls.c (precompute_arguments): Use new macro.
(expand_call): Ditto.
* combine.c (nonzero_bits): Ditto.
(record_promoted_value): Ditto.
* expr.c (store_expr): Ditto.
(expand_expr): Ditto.
* function.c (assign_parms): Ditto.
From-SVN: r50174
* combine.c (do_SUBST): Sanity check substitutions of
CONST_INTs, and reject them in SUBREGs and ZERO_EXTENDs.
(subst): Simplify SUBREG or ZERO_EXTEND instead of SUBSTing a
CONST_INT into its operand.
(known_cond): Likewise, for ZERO_EXTEND.
* simplify-rtx.c (simplify_unary_operation): Fix condition to
allow for simplification of wide modes. Reject CONST_INTs in
ZERO_EXTEND when their actual mode is not given.
From-SVN: r49920
* combine.c (nonzero_bits): If using reg_nonzero_bits,
we don't know anything about bits outside of X mode.
(num_sign_bit_copies): Likewise.
From-SVN: r48239
* basic-block.h (free_bb_for_insn): Declare.
* bb-reorder.c (label_for_bb): Use block_label.
(emit_jump_to_block_after): Remove.
(insert_intra_1): Do not update block_for_insn.
(insert_inter_bb_scope_notes): Likewise; update bb->end
* cfg.c (free_bb_for_insn): New.
(try_rediret_by_replacing_jump): Avoid set_block_for_new_insns call.
(force_nonfallthru_and_redirect): Likewise; do not update BB boundaries.
(commit_one_edge_insertion): Likewise.
(commit_one_edge_insertion): Do not update BB boundary.
(commit_edge_insertions): Do not call compute_bb_for_insn.
* cfgbuild.c (find_basic_blocks): Do not free basic_block_for_insn.
* cfgcleanup.c (merge_blocks_move_predecessor): Use reorder_insns_nobb.
(merge_blocks_move_successor_nojumps): Likewise.
(try_crossjump_to_edge): Do not update block_for_insn.
* combine.c (combine_instructions): Remove compute_bb_for_insn call.
* df.c (df_pattern_emit_later): Do not update BB boundary.
(df_jump_pattern_emit_after): Likewise.
(df_insn_move_before): Use emit_insn_before.
* emit-rtl.c (try_split): Emit after trial to get bb boundary updated
properly.
(add_insn_after, add_insn_before, emit_insns_after): Update BB
boundaries and basic_block_for_insn.
(reorder_insns_nobb): Rename from reorder_insns.
(reorder_insns): New.
(emit_block_insn_before, emit_block_insn_after): Kill.
* flow.c (check_function_return_warnings): Do not call
compute_bb_for_insn; Do not free basic_block_for_insn.
(attempt_auto_inc): Do not update basic_block_for_insn.
* function.c (emit_return_into_block): Likewise;
do not update BB boundaries.
* gcse.c (handle_avail_expr): Do not update basic_block_for_insn.
(insert_insn_end_bb): Use emit_insn_before; Likewise.
(pre_insert_copy_insn): Likewise.
(update_ld_motion_notes): Likewise.
(insert_insn_start_bb): Likewise.
(replace_store_insn): Likewise.
* ifcvt.c (noce_process_if_block): Likewise.
(if_convert): Do not call compute_bb_for_insn.
* lcm.c (optimize_mode_switching): Do not update BB boundaries.
Use emit_insn_before and emit_insn_after.
* recog.c (split_all_insns): Do not update BB boundaries;
Do not call compute_bb_for_insn.
(peephole2_optimize): Do not update BB boundaries.
* reg-stack.c (emit_pop_insn): Use emit_insn_after and
emit_insn_before.
(emit_swap_insn): Likewise.
(convert_regs_1): Likewise.
* reload1.c (reload): Call compute_bb_for_insn.
* rtl.h (reorder_insns_nobb): Declare.
* ssa.c (rename_equivalent_regs): Use emit_insn_before.
* toplev.c (rest_of_compilation): Call free_bb_for_insn
at places CFG is invalidated; do not call compute_bb_for_insn.
* cfg.c (expunge_block): Invalidate BB structure.
* (merge_blocks_nomove): Update properly BLOCK_FOR_INSN
array.
* cfg.c (verify_flow_info): Verify the basic_block_for_insn array.
From-SVN: r45647
* combine.c (combine_simplify_rtx): Don't reverse condition
if there is no reverse for the condition.
(simplify_comparison): Don't simplify subregs from INT to FP.
* gcc.c-torture/execute/ieee/fp-cmp-4.c (main): Make "data" static.
* gcc.c-torture/execute/ieee/fp-cmp-5.c: New.
From-SVN: r45220
* expmed.c (mode_for_extraction): New function.
(store_bit_field, extract_bit_field): Use it.
* expr.h: Prototype it and provide an enum for its first argument.
* combine.c, function.c, recog.c: Don't include insn-codes.h.
Use mode_for_extraction rather than testing HAVE_insv/extv/extzv
and digging through the insn_data tables.
* Makefile.in: Update dependencies.
From-SVN: r45086
* optabs.h (OTI_flodiv, flodiv_optab): Kill.
* genopinit.c: Put floating point divide insns in sdiv_optab.
* expr.c (expand_expr): Use sdiv_optab, not flodiv_optab.
* config/gofast.h, config/c4x/c4x.h,
config/ia64/hpux_longdouble.h, config/mips/mips.h,
config/pa/long_double.h, config/rs6000/sysv4.h,
config/sparc/sparc.h: Put floating point divide libcalls in sdiv_optab.
* optabs.c (init_optab): Break into new_optab, init_optab, init_optabv.
(init_optabs): Use init_optabv for overflow-trapping optabs.
Don't init flodiv_optab. Give mov_optab, movstrict_optab, and
cmp_optab RTX codes so have_insn_for can find them.
* optabs.c (expand_simple_binop, expand_simple_unop,
have_insn_for, gen_sub3_insn): New interfaces.
* expr.h: Prototype new functions.
(enum optab_methods): Move here from optabs.h.
* builtins.c, combine.c, doloop.c, function.c, ifcvt.c,
loop.c, profile.c, simplify-rtx.c, stmt.c, unroll.c:
Use new functions instead of working directly with optabs.
* doloop.c, ifcvt.c, loop.c, profile.c, simplify-rtx.c,
unroll.c: Don't include optabs.h.
* caller-save.c, combine.c, function.c, stmt.c: Just include
insn-codes.h, not optabs.h.
* Makefile.in: Update dependencies.
* combine.c (make_compound_operation, simplify_comparison):
Fix typos testing for this or that instruction.
From-SVN: r45008
* expr.h: Split out optab- and libfunc-related code to...
* optabs.h, libfuncs.h: ... these new headers.
* Makefile.in (CONFIG_H, EXPR_H): Take out insn-codes.h.
(OPTABS_H): New.
(various .o rules): Add $(OPTABS_H) and/or libfuncs.h to
dependencies.
* mkconfig.sh: Don't include insn-codes.h from config.h.
* reload.h: Use #ifdef GCC_INSN_CODES_H to decide whether
enum insn_code is available. Move reload_in_optab and
reload_out_optab array declarations to optabs.h.
* regmove.c (gen_add3_insn): Move to optabs.c, export from
there, prototype in expr.h.
* gencodes.c: Cleanup: zap global variables, don't use
printf where puts will do, don't bother defining MAX_INSN_CODE
which nothing uses, let CODE_FOR_nothing get its value implicitly.
* genemit.c, genopinit.c: Include optabs.h in generated file.
* genoutput.c: Include insn-codes.h in generated file.
* builtins.c, caller-save.c, combine.c, doloop.c, explow.c,
expmed.c, expr.c, function.c, ifcvt.c, loop.c, optabs.c, profile.c,
reload1.c, simplify-rtx.c, stmt.c, unroll.c, config/alpha/alpha.c,
config/arm/arm.c, config/c4x/c4x.c, config/clipper/clipper.c,
config/i386/i386.c, config/ia64/ia64.c, config/mn10300/mn10300.c,
config/pj/pj.c, config/sh/sh.c, config/sparc/sparc.c:
Include optabs.h.
* builtins.c, calls.c, dwarf2out.c, except.c, expr.c, function.c,
optabs.c, stmt.c, config/c4x/c4x.c, config/clipper/clipper.c,
config/m88k/m88k.c, config/sparc/sparc.c:
Include libfuncs.h.
* reload.c: Include expr.h and optabs.h before reload.h.
* config/alpha/alpha.c: Include tree.h before reload.h.
* config/pa/pa.c: Include expr.h, optabs.h, libfuncs.h,
and reload.h in that order.
* config/sparc/sparc.c: Include debug.h.
* recog.c: Include insn-codes.h.
cp:
* Make-lang.in (cp/except.o): Add libfuncs.h to dependencies.
* except.c: Include libfuncs.h.
java:
* Make-lang.in (java/decl.o): Update dependencies.
* decl.c: Include libfuncs.h, don't include toplev.h.
From-SVN: r44858
* combine.c (recog_for_combine): Use the fake recog
only if instruction does not match.
* rtl.h (NOOP_MOVE_INSN_CODE): New.
* rtlanal.c (noop_move_p): Always return 1 for NOOP_MOVE_INSN_CODE.
* combine.c (try_combine): Discover noop jump as direct jump.
From-SVN: r44464
* basic-block.h (find_sub_basic_block): Declare.
* flow.c (make_edges): New arguments MIN and MAX;
(find_sub_basic_blocks): Revamp to use make_edges
and purge_dead_edges.
(find_basic_blocks): Update call of find_sub_basic_block.
* recog.c (split_all_insns): Always expect CFG to be consistent;
call find_sub_basic_blocks in case something has changed.
* toplev.c (rest_of_compilation): Always call split_all_insns once CFG
has been built.
* basic-block.h (delete_noop_moves): Declare.
* combine.c (combine_instructions): Call it.
(recog_for_combine): Tolerate noop moves
(distribute_notes): Force refresh when register dies at noop move.
* flow.c (delete_noop_moves): Use BB structure; delete JUMP insns
too.
(life_analysis): Update delete_noop_moves call.
(set_noop_p): Move too ...
* rtlanal.c (noop_move_p): ... here.
* rtl.h (noop_move_p): Declare.
* basic-block.h (purge_all_dead_edges, purge_dead_edges): New functions.
* toplev.c (rest_of_compilation): Conditionally call purge_all_dead_edges
after combine.
* gcse.c (cprop_cc0_jump, cprop_insn): New argument "basic_block".
(cprop_jump): Likewise; call purge_dead_edges if substitution suceeded.
From-SVN: r44267
* optabs.c (can_extend_p) Check HAVE_ptr_extend for a specialized
pointer extension instruction.
* combine.c (nonzero_bits,num_sign_bit_copies) Likewise.
* simplify-rtx.c (simplify_unary_operation) Likewise.
* explow.c (convert_memory_address) Check value of
POINTERS_EXTEND_UNSIGNED to avoid some conversions when
less than zero.
* config/ia64/t-hpux (LIBGCC, INSTALL_LIBGCC, MULTILIB_OPTIONS,
MULTILIB_DIRNAMES, MULTILIB_MATCHES) Add multilib support.
* config/ia64/hpux.h (CPP_SPEC, ASM_SPEC, SUBTARGET_SWITCHES)
Add Multilib Support.
(POINTERS_EXTEND_UNSIGNED) Define for ILP32 support.
* config/ia64/ia64.h (MASK_ILP32, TARGET_ILP32, SUBTARGET_SWITCHES)
Add Multilib Support.
(POINTER_SIZE, LONG_TYPE_SIZE, MAX_LONG_TYPE_SIZE) Modify for ILP32
support.
* config/ia64/ia64.c (rtx_needs_barrier) Add support for addp4.
* config/ia64/ia64.md (ptr_extend) New instruction to "swizzle"
a 32 bit HP-UX pointer into a 64 bit HP-UX pointer.
From-SVN: r44166
2001-07-18 Toon Moene <toon@moene.indiv.nluug.nl>
* combine.c (combine_simplify_rtx): DIV can be treated
associatively for floats if unsafe math optimisations are enabled.
From-SVN: r44097
* combine.c (combine_simplify_rtx): Attempt to simplify
a*(b/c) as (a*b)/c for floats in unsafe_math mode.
* simplify-rtx.c (avoid_constatn_pool_reference): New static function.
(simplify_binary_operation, simplify_unary_operation,
simplify_relational_operation): Use it.
* combine.c (combine_simplify_rtx): Don't do associative law
on divisions; allow associative law on floats.
From-SVN: r44073
* gcov.c (output_data): Use HOST_WIDEST_INT_PRINT_DEC to output
variables of type HOST_WIDEST_INT.
* libgcc2.c (__bb_exit_func): Handle gcov_type as long long.
(__bb_exit_func): Correct type of count_max to avoid overflow.
(num_digits): Handle long long argument.
* combine.c (gen_lowpart_for_combine): Remove unused variable.
From-SVN: r44033
2001-07-06 Diego Novillo <dnovillo@redhat.com>
* combine.c (combine_simplify_rtx): Also recompute 'mode' if the
call to simplify_binary_operation returns a new pattern.
From-SVN: r43826
* predict.def: New file.
* predict.h: New file.
* predict.c: Include predict.h.
(predictor_info): New structure and array.
(predict_edge, predict_insn): Rewrite; make global.
(predict_edge_def, predict_insn_def): New global functions.
(dump_prediction, combine_predictions_for_insns): New
static functions.
(estimate_probability): Change calls to predict_edge
to predict_edge_def and calls to predict_insn to predict_insn_def;
combine probabilities.
(expected_value_to_br_prob): Behave as predictor.
* rtl.h (REG_BR_PRED): Update coment.
(invert_br_probabilities): New.
* jump.c: Include predict.h
(duplicate_loop_exit_test): Drop branch prediction notes.
(invert_jump): Use invert_br_probabilities.
* Makefile.in: Add dependancy on predict.h for jump and predict pass.
* ifcvt.c (dead_or_predicable): Use invert_br_probabilities.
* combine.c (distribute_notes): Handle BR_PRED.
From-SVN: r43115
* rtlanal.c (operand_preference): Fix preference for objects.
* gcse.c (handle_avail_expr): Be prepared to handle single_set
parallels.
* combine.c (if_then_else_cond): Use simplify_subreg instead
of operand_subword.
* integreate.c (sub_constants): Likewise.
* emit-rtl.c (constant_subword): Deprecate; remove most of code
and use simplify_gen_subreg.
Mon Jun 4 19:55:23 CEST 2001 Lars Brinkhoff <lars@nocrew.org>
* sibcall.c (skip_copy_to_return_value): recognize the situation
when the called function's return value is copied into an
intermediate pseudo, and then into the calling functions return
value register.
From-SVN: r42864
* simplify_rtx.c (simplify_subreg): Keep subregs on return values,
check CLASS_CANNOT_CHANGE_MODE before avoiding subreg on hard reg,
in case register wasn't OK previously, accept it now; allow
subregs of frame pointer if reload completed and frame pointer
is not needed.
* combine.c (sombine_simplify_rtx): Fix comment;
use subreg_lowpart_offset instead of subreg_lowpart_p
(gen_lowpart_for_combine): Use subreg_lowpart_offset.
* rtl.h (subreg_lowpart_parts_p): Kill.
(subreg_lowpart_offset, subreg_highpart_offset): Declare.
* simplify-rtx.c (simplify_subreg): Use subreg_lowpart_offset.
* emit-rtl.c (gen_lowpart_SUBREG): Use subreg_lowpart_offset;
(gen_lowpart_common): Likewise.
(subreg_lowpart_p): Likewise.
(subreg_lowpart_parts_p): Kill.
(subreg_lowpart_offset, subreg_highpart_offset): New function.
* emit-rtl.c (gen_lowpart_common): Use simplify_gen_subreg
to simplify SUBREG and REG.
(gen_highpart): Use simplify_gen_subreg for all simplifications.
* emit-rtl.c (gen_realpart, gen_imagpart): Do not handle
CONCAT specially.
* rtlanal.c (replace_regs): Use simplify_gen_subreg
From-SVN: r42850
2001-04-03 Jakub Jelinek <jakub@redhat.com>
David S. Miller <davem@pierdol.cobaltmicro.com>
Andrew MacLeod <amacleod@redhat.com>
Use byte offsets in SUBREGs instead of words.
* alias.c (nonlocal_mentioned_p): Use subreg_regno function.
* caller-save.c (mark_set_regs): Change callers of subreg_hard_regno
to pass new argument.
(add_stored_regs): Use subreg_regno_offset function.
* calls.c (expand_call): For non-paradoxical SUBREG take endianess
into account.
(precompute_arguments): Use gen_lowpart_SUBREG.
* combine.c (try_combine): Replace explicit XEXP with SUBREG_REG.
(combine_simplify_rtx): Rework to use SUBREG_BYTE.
(simplify_set): Rework to use SUBREG_BYTE.
(expand_field_assignment): Use SUBREG_BYTE.
(make_extraction): Use SUBREG_BYTE.
(if_then_else_cond): Use SUBREG_BYTE.
(apply_distributive_law): Use SUBREG_BYTE and fixup subreg comments.
(gen_lowpart_for_combine): Compute full byte offset.
* cse.c (mention_regs): Use SUBREG_BYTE.
(remove_invalid_subreg_refs): Rework to use SUBREG_BYTE.
(canon_hash): Use SUBREG_BYTE.
(fold_rtx): Pass SUBREG_BYTE div UNITS_PER_WORD to operand_subword.
(gen_lowpart_if_possible): Formatting.
* dbxout.c (dbxout_symbol_location): Compute SUBREG hard regnos
correctly.
* dwarf2out.c (is_pseudo_reg): Fixup explicit XEXP into SUBREG_REG
(mem_loc_descriptor): Fixup explicit XEXP into SUBREG_REG
(loc_descriptor): Fixup explicit XEXP into SUBREG_REG
* dwarfout.c (is_pseudo_reg): Fixup explicit XEXP into SUBREG_REG
(output_mem_loc_descriptor): Fixup explicit XEXP into SUBREG_REG
(output_loc_descriptor): Fixup explicit XEXP into SUBREG_REG
* emit-rtl.c (gen_rtx_SUBREG): New function, used to verify
certain invariants about SUBREGs the compiler creates.
(gen_lowpart_SUBREG): New function.
(subreg_hard_regno): New function to get the final register number.
(gen_lowpart_common): Use SUBREG_BYTE.
(gen_imagpart): Spacing nits.
(subreg_realpart_p): Use SUBREG_BYTE.
(gen_highpart): Use SUBREG_BYTE.
(subreg_lowpart_p): Always compute endian corrected goal offset,
even at the byte level, then compare against that.
(constant_subword): New function, pulled out all constant cases
from operand_subword and changed second argument name to offset.
(operand_subword): Detect non REG/SUBREG/CONCAT/MEM cases early
and call constant_subword to do the work. Return const0_rtx if
looking for a word outside of OP.
(operand_subword_force): Change second arg name to offset.
* expmed.c (store_bit_field): Use SUBREG_BYTE.
(store_split_bit_field): Use SUBREG_BYTE.
(extract_bit_field): Use SUBREG_BYTE.
(extract_split_bit_field): Use SUBREG_BYTE.
(expand_shift): Use SUBREG_BYTE.
* expr.c (store_expr, expand_expr): Use gen_lowpart_SUBREG.
* final.c (alter_subreg) Use subreg_hard_regno and SUBREG_BYTE.
* flow.c (set_noop_p): Use SUBREG_BYTE.
(mark_set_1): Remove ALTER_HARD_SUBREG. Use subreg_regno_offset instead.
* function.c (fixup_var_refs_1): Fixup explicit XEXP into a SUBREG_REG.
(fixup_memory_subreg): Use SUBREG_BYTE and remove byte endian
correction code.
(optimize_bit_field): Use SUBREG_BYTE.
(purge_addressof_1): Use SUBREG_BYTE.
(purge_single_hard_subreg_set): Use subreg_regno_offset function.
(assign_params): Mark arguments SUBREG_PROMOTED_VAR_P if they are
actually promoted by the caller and PROMOTE_FOR_CALLS_ONLY is true.
* gengenrtl.c (special_rtx): Add SUBREG.
* global.c (mark_reg_store): Use SUBREG_BYTE.
(set_preference): Rework to use subreg_regno_offset and SUBREG_BYTE.
* ifcvt (noce_emit_move_insn): Use SUBREG_BYTE.
* integrate.c (copy_rtx_and_substitute): Use SUBREG_BYTE and make sure
final byte offset is congruent to subreg's mode size.
(subst_constants): Use SUBREG_BYTE.
(mark_stores): Use subreg_regno_offset function.
* jump.c (rtx_renumbered_equal_p, true_regnum): Use subreg_regno_offset
function and SUBREG_BYTE.
* local-alloc.c (combine_regs): Use subreg_regno_offset function.
(reg_is_born): Use subreg_hard_regno.
* recog.c (valid_replace_rtx_1): Use SUBREG_BYTE and remove byte
endian correction code. Don't combine subregs unless resulting
offset aligns with type. Fix subreg constant extraction for DImode.
Simplify SUBREG of VOIDmode CONST_DOUBLE.
(general_operand): Remove dead mode_altering_drug code.
(indirect_operand): Use SUBREG_BYTE.
(constrain_operands): Use subreg_regno_offset function.
* reg-stack.c (get_true_reg): Use subreg_regno_offset function.
* regmove.c (regmove_optimize): Use SUBREG_BYTE.
(optimize_reg_copy_3): Use gen_lowpart_SUBREG.
* regs.h (REG_SIZE): Allow target to override.
(REGMODE_NATURAL_SIZE): New macro which target can override.
* reload.c (reload_inner_reg_of_subreg): subreg_regno should be used
on the entire subreg rtx.
(push_reload): Use SUBREG_BYTE in comments and code.
(find_dummy_reload): Use subreg_regno_offset. Only adjust offsets
for hard registers inside subregs.
(operands_match_p): Use subreg_regno_offset.
(find_reloads): Use SUBREG_BYTE and only advance offset for subregs
containing hard regs.
(find_reload_toplev): Use SUBREG_BYTE. Remove byte endian
corrections when fixing up MEM subregs.
(find_reloads_address_1): Use SUBREG_BYTE, subreg_regno, and
subreg_regno_offset where appropriate.
(find_reloads_subreg_address): Use SUBREG_BYTE. Remove
byte endian corrections when fixing up MEM subregs.
(subst_reloads): When combining two subregs, make sure final
offset is congruent to subreg's mode size.
(find_replacement): Use SUBREG_BYTE and subreg_regno_offset.
(refers_to_regno_for_reload_p): Use subreg_regno.
(reg_overlap_mentioned_for_reload_p): Use subreg_regno_offset.
* reload1.c (eliminate_regs) Use SUBREG_BYTE. Remove byte endian
correction code for memory subreg fixups.
(forget_old_reload_1): Use subreg_regno_offset.
(choose_reload_regs): Use subreg_regno.
(emit_input_reload_insns): Use SUBREG_BYTE.
(reload_combine_note_store): Use subreg_regno_offset.
(move2add_note_store): Use subreg_regno_offset.
* resource.c (update_live_status, mark_referenced_resources): Use
subreg_regno function.
(mark_set_resources): Use subreg_regno function.
* rtl.h (SUBREG_WORD): Rename to SUBREG_BYTE.
(subreg_regno_offset, subreg_regno): Define prototypes.
(subreg_hard_regno, constant_subword, gen_rtx_SUBREG): Newi functions.
(gen_lowpart_SUBREG): Add prototype.
* rtl.texi (subreg): Update to reflect new byte offset representation.
Add mentioning of the effect that BYTES_BIG_ENDIAN has on subregs now.
* rtlanal.c (refers_to_regno_p): Use subreg_regno.
(reg_overlap_mentioned_p): Use subreg_regno.
(replace_regs); Make sure final offset of combined subreg is
congruent to size of subreg's mode.
(subreg_regno_offset): New function.
(subreg_regno): New function.
* sched-vis.c (print_value): Change SUBREG_WORD to SUBREG_BYTE.
* sdbout.c (sdbout_symbol): Compute offset using alter_subreg.
* stmt.c (expand_anon_union_decl): Use gen_lowpart_SUBREG.
* tm.texi (ALTER_HARD_SUBREG): Remove, it is now dead.
(SUBREG_REGNO_OFFSET): Describe SUBREG_REGNO_OFFSET overrides.
* config/a29k/a29k.c (gpc_reg_operand): Use subreg_regno.
(a29k_get_reloaded_address): Use SUBREG_BYTE.
(print_operand): Use SUBREG_BYTE.
* config/alpha/alpha.c (print_operand_address): Use SUBREG_BYTE.
* config/arm/arm.c (arm_reload_in_hi): Use SUBREG_BYTE.
(arm_reload_out_hi): Use SUBREG_BYTE.
* config/d30v/d30v.c (d30v_split_double): Use subreg_regno_offset
instead of SUBREG_WORD.
(d30v_print_operand_memory_reference): Use subreg_regno_offset.
* config/dsp16xx/dsp16xx.md (extendqihi2, zero_extendqihi2): Fix
SUBREG creation to use byte offset.
* config/h8300/h8300.md (Unnamed HImode zero extraction and 16bit
inverted load insns): Fix explicit rtl subregs to use byte
offsets.
* config/i370/i370.md (cmpstrsi, movstrsi, mulsi3, divsi3,
udivsi3, umodsi3): Generate SUBREGs with byte offsets.
* config/i860/i860.c (single_insn_src_p): Use SUBREG_BYTE.
* config/i860/i860.md (mulsi3_big): Fixup explicit SUBREGs in rtl
to use byte offsets.
(unnamed fmlow.dd insn): Fixup SUBREGS to use byte offsets.
* config/i960/i960.md (extendhisi2): Generate SUBREGs with byte
offsets, also make sure it is congruent to SUBREG's mode size.
(extendqisi2, extendqihi2, zero_extendhisi2, zero_extendqisi2,
unnamed ldob insn): Generate SUBREGs with byte offset.
(zero_extendqihi2): SUBREG's are byte offsets.
* config/m68hc11/m68hc11.c (m68hc11_gen_lowpart): Use SUBREG_BYTE.
(m68hc11_gen_highpart): Use SUBREG_BYTE.
* config/m68k/m68k.md (zero_extendhisi2, zero_extendqihi2,
zero-extendqisi2): Generate SUBREGs with byte offset.
(umulsidi3, mulsidi3, subreghi1ashrdi_const32,
subregsi1ashrdi_const32, subreg1lshrdi_const32): Fixup explicit
subregs in rtl to use byte offsets.
* config/m88k/m88k.md (extendsidi2): fixup subregs to use byte offset.
* config/mips/mips.c (mips_move_1word): Use subreg_regno_offset.
(mips_move_2words): Use subreg_regno_offset.
(mips_secondary_reload_class): Use subreg_regno_offset.
* config/mips/mips.md (DImode plus, minus, move, and logical op
splits): Fixup explicit subregs in rtl to use byte offsets.
* config/mn10200/mn10200.c (print_operand): Use subreg_regno function.
* config/mn10300/mn10300.c (print_operand): Use subreg_regno function.
* config/ns32k/ns32k.md (udivmoddisi4): Fix explicit subregs in
rtl to use byte offsets.
* config/pa/pa.c (emit_move_sequence): Use SUBREG_BYTE.
* config/pa/pa.md (floatunssisf2, floatunssidf2, mulsi3): fix explicit
subregs to use byte offsets.
* config/pdp11/pdp11.md (zero_extendhisi2, modhi3, modhi3+1):
Fixup explicit subregs in rtl to use byte offsets.
* config/romp/romp.c (memory_offset_in_range_p): Use SUBREG_BYTE
and remove byte endian correction code.
* config/sh/sh.c (output_movedouble): Use subreg_regno.
(gen_ashift_hi): Use SUBREG_BYTE.
(regs_used): Use subreg_regno_offset.
(machine_dependent_reorg): Use subreg_regno_offset.
* config/sh/sh.h (INDEX_REGISTER_RTX_P): Use SUBREG_BYTE.
* config/sh/sh.md (DImode and DFmode move splits): Use subreg_regno.
(movdf_i4): Subregs are byte offsets now.
* config/sparc/sparc.c (ultra_find_type): Use SUBREG_BYTE.
* config/sparc/sparc.h (ALTER_HARD_SUBREG): Removed.
(REGMODE_NATURAL_SIZE): Override.
(REG_SIZE): For SUBREG check float mode on SUBREG_REG's mode.
* config/sparc/sparc.md (TFmode move splits): Generate SUBREGs
with byte offsets.
(zero_extendhisi2, zero_extendqidi2_insn, extendhisi2,
extendqihi2, sign_extendqihi2_insn, sign_extendqisi2_insn,
extendqidi2): Generate SUBREGs with byte offsets, also make sure
it is congruent to SUBREG's mode size.
(smulsi3_highpart_v8plus): Fix explicit subregs in rtl to use byte
offsets.
(cmp_siqi_trunc, cmp_siqi_trunc_set, cmp_diqi_trunc,
cmp_diqi_trunc_set, lshrdi3_v8plus+1, lshrdi3_v8plus+2,
lshrdi3_v8plus+3, lshrdi3_v8plus+4): Use proper
SUBREG_BYTE offset for non-paradoxical subregs in patterns.
* config/v850/v850.c (print_operand, output_move_double): Use
subreg_regno function.
Co-Authored-By: Andrew MacLeod <amacleod@redhat.com>
Co-Authored-By: David S. Miller <davem@pierdol.cobaltmicro.com>
From-SVN: r41058
* combine.c (undobuf): Remove field previous_undos; all refs deleted.
(gen_rtx_combine): Deleted; all references changed as appropriate.
(gen_unary): Deleted; all refs changed to call simplify_gen_unary.
From-SVN: r40577
* combine.c (known_cond): Do not reverse the condition when
SMAX/UMAX is being considered and the condition is for equality
or inequality.
* testsuite/gcc.c-torture/execute/20010221-1.c: New test.
From-SVN: r40077
* combine.c (nonzero_bits, case PLUS): If pointers extend unsigned
and this is the sum of a pointer and a constant, we know the result
did not overflow.
(num_sign_bit_copies, case PLUS): Likewise.
* explow.c (convert_memory_address): Remove opposite SUBREG.
* function.c (instantiate_new_reg): New function (from common code).
(instantiate_virtual_regs_1): Call it.
For PLUS, handle if (plus (subreg (virt-reg) (const_int))
if pointers sign- or zero-extend.
* simplify-rtx.c (simplify_unary_operation, case ZERO_EXTEND):
If pointers extend unsigned, use inside of SUBREG.
(simplify_unary_operation, case SIGN_EXTEND): Likewise, if sign extend.
From-SVN: r39489
* combine.c (combine_simplify_rtx): If the modes are all VOIDmode,
check the original operand's mode also.
* simplify-rtx.c (simplify_ternary_operation): Ditto.
From-SVN: r39247
* combine.c (try_combine): Don't set i3_subst_into_i2 for
case of making new double-word constant.
Revert last change: instead just test i3_subst_into_i2.
From-SVN: r39094
