PR optimization/11198
* alias.c (objects_must_conflict_p): Return 1 if the types have
the same alias set, not if the alias sets only conflict.
Co-Authored-By: Eric Botcazou <ebotcazou@libertysurf.fr>
From-SVN: r69034
* alloc-pool.c: Convert to ISO C90 prototypes.
* alloc-pool.h: Likewise.
* alias.c: Likewise.
* attribs.c: Likewise.
* bb-reorder.c: Likewise.
* bitmap.h: Likewise.
* bitmap.c: Likewise.
* builtins.c: Likewise.
* tree.h: Convert prototypes of attribs.c to ISO C90.
* basic-block.h: Convert prototypes of bb-reorder.c to ISO C90.
* rtl.h: Convert prototypes of alias.c and builtins.c to ISO C90.
* expr.h: Convert prototypes of builtins.c to ISO C90.
From-SVN: r67975
* alias.c (mark_constant_function): Check for constancy and
purity even of void functions. Update both the function decl
and the cgraph RTL info with the results.
From-SVN: r65981
* alias.c (rtx_equal_for_memref_p): Assume that X and Y has been
canonicalized.
(memrefs_conflict_p): Likewise.
(addr_side_effect_eval): Canonicalize the constructed address.
From-SVN: r64540
* Makefile.in (calls.o, toplev.o alias.o): Depend on cgraph.h
* alias.c: Include cgraph.h
(mark_constant_function): Use cgraph_rtl_info.
* calls.c: Include cgraph.h
(flags_from_decl_or_type): Use cgraph_rtl_info to find pure and const
calls.
(expand_call): Use cgraph_rtl_info to set preferred stack boundary.
* cgraph.c (cgraph_rtl_info): New function.
* cgraph.h (cgraph_rtl_info): Declare
(cgraph_rtl_info): Likewise.
* function.h (struct function): Add recursive_call_emit.
* toplev.c: Include cgraph.h.
(rest_of_compilation): Set preferred_incoming_stack_boundary.
* gcc.dg/i386-local2.c: New.
From-SVN: r63868
* objc-act.c: Include cgraph.h
(mark_referenced_methods): New function.
(objc_init): Call it.
* objc-lang.c (LANG_HOOKS_CALLGRAPH_EXPAND_FUNCTION): Set.
* c-decl.c (finish_function): Honor can_defer_p even in unit-at-a-time
mode.
* optabs.c (expand_fix): Do not widen the input operand.
* expr.c (emit_group_store): Fix crash when converting single
register into complex register.
* Makefile.in (jump.o, regclass.o, alias.o): Add dependency on timevar.h
* alias.c: Include timevar.h
(init_alias_analysis): Set timevar
* jump.c: Include timevar.h
(rebuild_jump_labels): Set timevar
* regcalss.c: Include timevar.h
(reg_scan): Set timevar
* timevar.def (TV_ALIAS_ANALYSIS, TV_REG_SCAN, TV_REBUILD_JUMP): New
From-SVN: r63464
* c-common.c (c_common_get_alias_set): Correctly handle characters.
Rearrange order of expressions; don't handle vectors here.
* alias.c (get_alias_set): Let vectors match their components.
From-SVN: r54821
* alias.c (argument_registers): Remove.
(init_alias_once): Initialize static_reg_base_value here. Remove
initialization of argument_registers.
(init_alias_once_per_function): Remove.
(init_alias_analysis): Copy all the entries from static_reg_base_value
into new_reg_base_value all at once.
* rtl.h (init_alias_once_per_function): Remove declaration.
* function.c (prepare_function_start): Do not call
init_alias_once_per_function.
* caller-save.c (init_caller_save): Use gen_rtx_INSN instead of
starting a sequence and emitting an INSN.
From-SVN: r54582
* alias.c (static_reg_base_value): New to hold RTL for
items allocated once per function for the aliasing code.
(init_alias_once_per_function): Initialize static_reg_base_value.
(init_alias_analysis): Avoid throw-away allocations of RTL by
using pre-computed values in static_reg_base_value.
* function.c (prepare_function_start): Call
init_alias_once_per_function appropriately.
* rtl.h (init_alias_once_per_function): Declare.
* caller-save (init_caller_save): Restructure slightly to
avoid lots of silly RTL generation.
* expr.c (init_expr_once): Likewise.
* reload1.c (reload_cse_regs_1): Allocate throw-away register
RTL object here. Pass it into children.
(reload_cse_simplify_operands): Use passed-in register RTL
object.
(reload_cse_simplify): Pass through throw-away register
RTL object.
From-SVN: r54442
* alias.c: Include target.h.
(mark_constant_function): Use targetm.binds_local_p instead
of checking TREE_PUBLIC ourselves.
* Makefile.in (alias.o): Add TARGET_H.
* gcc.c-torture/execute/pure-1.c: Don't mark any of the
test functions static.
From-SVN: r54186
* alias.c (canon_true_dependence): Special case (mem:blk (scratch)).
* gcse.c (free_insn_expr_list_list): New.
(clear_modify_mem_tables): Use it. Fix bit set usage.
(canon_list_insert): Use EXPR_LISTs for expressions.
(record_last_mem_set_info): Factor BLOCK_NUM (insn).
From-SVN: r52624
2002-03-06 Dan Nicolaescu <dann@ics.uci.edu>
Daniel Berlin <dan@dberlin.org>
C++ alias analysis improvement.
* alias.c (record_component_aliases): Record aliases for base
classes too.
* cp/cp-lang.c (ok_to_generate_alias_set_for_type): New function.
(cxx_get_alias_set): Use it.
Co-Authored-By: Daniel Berlin <dberlin@dberlin.org>
From-SVN: r50587
2002-01-10 David Edelsohn <edelsohn@gnu.org>
* alias.c (find_base_value): Add cases for HIGH, PRE_INC, PRE_DEC,
POST_INC, POST_DEC, PRE_MODIFY, and POST_MODIFY.
(find_base_term): Add cases for TRUNCATE, PRE_MODIFY, and POST_MODIFY.
Recurse for any operand of AND as long as constant is non-zero.
From-SVN: r48741
* config/rs6000/rs6000.h (TARGET_POWERPC): For IN_LIBGCC2, define
as 1 for __powerpc64__ as well.
* config/rs6000/t-aix43 (T_ADAFLAGS): Define.
* alias.c (find_base_value, PLUS/MINUS): If we found a base,
return it.
From-SVN: r48567
* tree.def (VIEW_CONVERT_EXPR): New tree code.
* tree.h (handled_component_p): New declaration.
* alias.c (handled_component_p): Move function from here ...
* expr.c (handled_component_p): ... to here and non longer static.
(is_zeros_p, case VIEW_CONVERT_EXPR): New case.
(store_field): Remove unneeded MEM_COPY_ATTRIBUTES call.
(get_inner_reference): Handle VIEW_CONVERT_EXPR.
(expand_expr, case VAR_DECL): Clean up handling of re-layout case.
(expand_expr, case VIEW_CONVERT_EXPR): New case.
(expand_expr, cse ADDR_EXPR): No need to copy if already
BIGGEST_ALIGNMENT.
* fold-const.c (fold, case VIEW_CONVERT_EXPR): New case.
* varasm.c (initializer_constant_value_p, case VIEW_CONVERT_EXPR): New.
(output_constant): Handle VIEW_CONVERT_EXPR.
* dwarf2out.c (loc-descriptor_from_tree, add_bound_info):
Add new case for VIEW_CONVERT_EXPR.
From-SVN: r47179
* alias.c (nonoverlapping_memrefs_p): Not overlapping if one base is
constant and one is on frame.
If know memref offset, adjust size from decl.
From-SVN: r46925
* alias.c (can_address_p): No longer static.
* emit-rtl.c (get_mem_attrs): New parameter, MODE; all callers changed.
Return 0 if all parameters are default values.
(set_mem_attributes): Set MEM_KEEP_ALIAS_SET_P.
(adjust_address_1): Try harder to compute a size.
* expr.c (expand_assignment, store_constructor): If can't address,
set MEM_KEEP_ALIAS_SET_P.
(store_constructor_field): Don't change set if MEM_KEEP_ALIAS_SET_P.
(store_field): Likewise.
(store_constructor): Simplify call to store_constructor_field.
* expr.h (can_address_p): New declaration.
* gensupport.c (gen_rtx_CONST_INT): New function.
* rtl.h (MEM_KEEP_ALIAS_SET_P): New macro.
(MEM_SIZE): Get size from mode, if not set and not BLKmode.
(MEM_COPY_ATTRIBUTES): Copy MEM_KEEP_ALIAS_SET_P.
From-SVN: r46487
* alias.c (can_address_p): Compnonents are not addressable if
the containing type has alias set 0.
(get_alias_set): Rework to use STRIP_NOPS.
Only call front-end routine on object, type, or object with
NOPs stripped, not inner values.
Use language hook to call front-end routine.
* builtins.c (get_memory_rtx): Always call set_mem_attributes.
(expand_builtin_apply): Call set_mem_align on MEMs we make.
Don't pass alignment to emit_block_move.
(expand_builtin_memcpy, expand_builtin_va_copy): Likewise.
(expand_builtin_memset): Likewise, but for clear_storage.
* c-common.c (lang_get_alias_set): Renamed to c_common_alias_set
and remove C++ specific parts.
* c-common.h (c_common_get_alias_set): Add declaration.
* c-lang.c (LANG_HOOKS_GET_ALIAS_SET): New macro.
* calls.c (emit_call_1): Fix typo in sibcall_pop case.
(save_fixed_argument_area): Call set_mem_align.
Remove alignment in call to emit_block_move.
(emit_library_call_value_1, store_one_arg): Likewise.
(target_for_arg): Remove; disabled long ago.
* emit-rtl.c (set_mem_attributes): Rework to only call get_mem_attrs
once and similar cleanups.
(offset_address): Use proper introductory comment.
* expr.c (emit_block_move): Use alignment from that of MEM args, not
from explicit operand; all callers changed.
(clear_storage): Likewise.
(expand_assignment): Don't call set_mem_alias_set on to_rtx.
(store_field): Remove kludge on alias set used for to_rtx.
(highest_pow2_factor, case *_DIV_EXPR): Never return 0.
(expand_expr_unaligned): Call set_mem_attributes instead of
set_mem_alias_set.
* expr.h (emit_block_move, clear_storage): Remove ALIGN argument.
* function.c (assign_stack_temp_for_type): Set MEM alignment.
(expand_function_end): Track MEM attributes of trampolines.
* ifcvt.c (noce_try_cmove_arith): Set alignment of new MEM.
* integrate.c (copy_rtx_and_substitute, case CALL): Copy memory
attributes from original.
* langhooks.c (lang_hook_default_get_alias_set): New function.
(hook_get_alias_set_0): New function.
* langhooks.h (hook_get_alias_set_0): New declaration.
(lang_hook_default_get_alias_set): Likewise.
(LANG_HOOKS_GET_ALIAS_SET): New macro; add to initializer.
* reload1.c (alter_reg): Use adjust_address_nv.
* rtl.c (get_mode_alignment): Moved to here.
* rtl.h (MEM_ALIGN): Take default from mode, if not BLKmode, and
change default if unknown from 1 to BITS_PER_UNIT.
* stor-layout.c (get_mode_alignment): Remove from here.
* toplev.h (struct lang_hoks): Add get_alias_set field.
* tree.h (lang_get_alias_set): Delete declaration.
* config/arc/arc.c (arc_setup_incoming_varags): Set MEM alignment.
* config/i386/i386.c (ix86_setup_incoming_varargs): Likewise.
(ix86_va_arg): Likewise.
* config/i960/i960.c (i960_setup_incoming_varargs): Likewise.
* config/pa/pa.c (hppa_builtin_saveregs): Likewise.
* config/sparc/sparc.c (sparc_va_arg): Likewise.
* config/rs6000/rs6000.c (setup_incoming_varargs): Likewise.
(expand_block_move_mem): Remove dead code.
* cp/cp-lang.c (cxx_get_alias_set): New function.
Point LANG_HOOKS_GET_ALIAS_SET to it.
* f/com.c (LANG_HOOKS_GET_ALIAS_SET): New macro.
(lang_get_alias_set): Delete.
* java/lang.c (lang_get_alias_set): Deleted.
From-SVN: r46440
* Makefile.in (print-rtl.o): Depend on TREE_H.
* alias.c (get_alias_set): Make two passes over objects to first
see if inner object is access via restricted pointer.
Defer allocating alias set for restricted pointer until here.
Call find_placeholder with second arg nonzero.
Minor cleanups.
* emit-rtl.c (set_mem_attributes): Set more attributes.
(set_mem_align, change_address, adjust_address_1): New functions.
(change_address_1): Now static.
(adjust_address, adjust_address_nv): Deleted.
(replace_equiv_address): Call change_address_1.
* expr.c (get_inner_reference): Handle PLACEHOLDER_EXPR.
(find_placeholder): Get starting point from PLIST arg.
(expand_expr, case PLACEHOLDER_EXPR): Initialize find_placeholder arg.
* expr.h (set_mem_align, change_address, adjust_address_1): New decls.
(adjust_address, adjust_address_nv): New macros.
* print-rtl.c (tree.h): New include.
(print_rtx, case MEM): Print all memory attributes.
From-SVN: r46313
* alias.c (get_alias_set): Try to replace PLACEHOLDER_EXPR.
Loop through NOPs, placeholders, and components.
Don't go through NOPs if change mode.
(record_alias_subset): Do nothing if SUBSET and SET are the same.
* emit-rtl.c (set_mem_alias_set): Enable check.
* expr.c (find_placeholder): New function.
(expand_expr, case PLACEHOLDER_EXPR): Use it.
(expand_expr, case COMPONENT_EXPR): Always copy OP0 when we need
to modify it and avoid unneeded copies.
* expr.h (expand_expr): Always define.
(find_placeholder): New declaration.
From-SVN: r45931
* alias.c (clear_reg_alias_info): Use K&R format definition.
Avoid unsigned warning.
* builtins.c: Use "unsigned int", not "unsigned".
(target_char_cast): Use host_integerp and tree_low_cst.
(expand_builtin_args_info, expand_builtin_frame_address): Likewise.
(c_strlen): Likewise; OFFSET now HOST_WIDE_INT.
(c_getstr): Likewise.
(std_expand_builtin_va_arg): Use int_size_in_bytes.
(builtin_memcpy_read_str): Avoid unsigned warning.
(expand_builtin_memcpy): Alignments are unsigned.
(expand_builtin_strncpy, expand_builtin_memset): Likewise.
(expand_builtin_expect_jump): Use integer_zerop and integer_onep.
* predict.c (expensive_function_p): LIMIT now unsigned.
* resource.c (mark_target_live_regs): Make some vars unsigned.
* sdbout.c: Use "unsigned int", not "unsigned".
(MAKE_LINE_SAFE): Add cast to avoid unsigned warning.
(sdbout_source_line): Likewise.
(sdbout_record_type_name): Remove "const" for NAME declaration.
* config/alpha/alpha.c (alpha_expand_block_move): Whitespace fixes.
From-SVN: r45503
* alias.c (get_alias_set): Return a previously calculated
alias set for a VAR_DECL.
* function.c (gen_mem_addressof): Calculate the alias set before
touching the RTL.
From-SVN: r44720
* i386.c (ix86_output_main_function_alignment_hack): New function.
(TARGET_ASM_FUNCTION_PROLOGUE): Default to it.
* flow.c (mark_dfs_back_edges): Move from loop_p ; mark back
edges by EDGE_DFS_BACK flag.
(dump_edge_info): Add dfs_back flag.
* basic-block.h (EDGE_DFS_BACK): New constant.
(mark_dfs_back_edges): Declare.
* alias.c (loop_p): Remove.
(mark_constant_function): Use mark_dfs_back_edges.
* reg-stack.c (block_info_def): Add predecesors counter and stack_out.
(reg_to_stack): Call mark_dfs_back_edges; count the predecesors.
(compensate_edge): Break out from ...
(convert_regs_1): ... here; do smart choosing of stack_out to copy.
(convert_regs_2): Set block_done once block is really done;
Do updating of the predecesors counts.
* toplev.c (rest_of_compilation): Recompute block_for_insn
before post-reload cfg_cleanup.
* function.c (thread_prologue_epilogue_insns):
Call set_block_for_new_insns when emitting prologue directly.
From-SVN: r44486
2001-04-09 Andrew MacLeod <amacleod@redhat.com>
Jeff Law <law@cygnus.com>
* alias.c (get_addr): Externalize.
(canon_true_dependence): New function. Behaves like true_dependance
except it already assumes a MEM has been canonicalized.
* flags.h (flag_gcse_lm, flag_gcse_sm): New optimization flags.
* gcse.c (struct ls_expr): Add load/store expressions structure.
(modify_mem_list, canon_modify_mem_list): New variable.
(gcse_main): Initialize & finalize alias analysis. Use enhanced
load motion and store motion if requested.
(alloc_gcse_mem): Allocate space for modify_mem_list array.
(free_gcse_mem): Free the modify_mem_list array.
(oprs_unchanged_p): Use load_killed_in_block_p.
(gcse_mems_conflict_p, gcse_mem_operand): New variables.
(mems_conflict_for_gcse_p): New function. Don't kill loads
with stores to themselves if its in the load/store expression list.
(load_killed_in_block_p): New function.
(canon_list_insert): New Function.
(record_last_mem_set_info): Keep a list of all instructions which
can modify memory for each basic block.
(compute_hash_table, reset_opr_set_tables): Clear modify_mem_list.
(oprs_not_set_p): Use load_killed_in_block_p.
(mark_call, mark_set, mark_clobber): Use record_last_mem_set_info.
(expr_killed_p): Use load_killed_in_block_p.
(compute_transp): Do not pessimize memory references.
(pre_edge_insert): Update stores for a load motion expression.
(one_pre_gcse_pass): Check loads/stores for extra load motion.
(ldst_entry): Find or create a ldst_expr structure.
(free_ldst_entry): Free memory for an individual item.
(free_ldst_mems): Free entire load/store expression list.
(print_ldst_list): Print debug info.
(find_rtx_in_ldst): Try to find an rtx expression in the ldst list.
(enumerate_ldsts): Assign integer values to each entry in list.
(first_ls_expr): First expression in the list.
(next_ls_expr): Next expression in the list.
(simple_mem): Check if expression qualifies for ld/st expression list.
(invalidate_any_buried_refs): Remove from expression list if its
used in some other way we dont understand.
(compute_ld_motion_mems): Find all potential enhanced load motion
expression.
(trim_ld_motion_mems): Remove any expressions which are invalid.
(update_ld_motion_stores): Copy store values to registers for loads
which have been moved.
(regvec, st_antloc, num_store): New global statics.
(reg_set_info): Marks registers as set.
(store_ops_ok): Verfies registers expressions are valid in a block.
(find_moveable_store): Look for moveable stores in a pattern.
(compute_store_table): Find stores in a function worth moving, maybe.
(load_kills_store): Check dependance of a load and store.
(find_loads): Find any loads in a pattern.
(store_killed_in_insn): Check if a store is killed in an insn.
(store_killed_after): Check is store killed after an insn in a block.
(store_killed_before): Check is store killed before an insn in a block.
(build_store_vectors): Generate the antic and avail vectors.
(insert_insn_start_bb): Insert at the start of a BB, update BLOCK_HEAD.
(insert_store): Add a store to an edge.
(replace_store_insn): Replace a store with a SET insn.
(delete_store): Delete a store insn.
(free_store_memory): Free memory.
(store_motion): Perform store motion.
* invoke.texi: Add documentation for -fcse-lm and -fgcse-sm.
* rtl.h (get_addr, canon_true_dependence): Add prototypes.
* toplev.c (flag_gcse_lm, flag_gcse_sm): New Variables.
(f_options): Add gcse-lm and gcse-sm.
Co-Authored-By: Jeff Law <law@redhat.com>
From-SVN: r41207
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
* flow.c (insn_dead_p): Don't consider two memrefs equivalent
unless anti_dependence says they are.
* alias.c (objects_must_conflict): If neither has a type specified,
they must conflict.
From-SVN: r40420
* alias.c (rtx_equal_for_memref_p, case ADDRESSOF): Don't assume
args are REG.
* expr.c (store_constructor): Don't look at MEM_ALIAS_SET unless MEM.
* function.c (assign_parms): Use INTVAL for a CONST_INT.
From-SVN: r39139
* alias.c (alias_sets_conflict_p): New function.
(mems_in_disjoint_alias_sets_p): Use it.
(readonly_fields_p): Moved from expr.c; check for record type.
(objects_must_conflict_p): New function.
* calls.c (expand_call): Use assign_temp as much as possible, use
readonly variant if assigned once, and don't set memory attributes.
(emit_library_call_value_1, store_one_arg): Likewise.
* integrate.c (expand_inline_function): Likewise.
* stmt.c (expand_asm_operands, expand_return): Likewise.
* expr.c (copy_blkmode_from_reg, store_constructor): Likewise.
(store_field, save_noncopied_parts, expand_expr): Likewise.
(expand_expr_unaligned): Likewise.
(readonly_fields_p): Moved to alias.c.
(safe_from_p): Rework handling of SAVE_EXPR.
MEMs ony conflict if alias sets conflict; likewise for INDIRECT_REF.
* function.c (struct temp_slot): Delete field ALIAS_SET; add TYPE.
(assign_stack_for_temp): Use objects_must_confict_p.
Set all memory attributes from type, if specified.
(mark_temp_slot): Mark TYPE field.
* tree.h (alias_sets_conflict_p, readonly_fields_p): New decls.
(objects_must_conflict_p): Likewise.
* stmt.c (expand_decl): Don't use assign_stack_temp in error case.
(add_case_node): No need to copy nodes anymore.
From-SVN: r38559
* function.h (emit_status): Delete member regno_pointer_flag and
rename regno_pointer_flag_length to regno_pointer_align_length.
Delete define for REGNO_POINTER_FLAG.
* integrate.h (inline_remap): Delete member regno_pointer_flag.
Add member x_regno_reg_rtx.
* rtl.h (rtx_def): Use frame_related bit to indicate register is
a pointer in REG expressions. Define REG_POINTER macro.
* alias.c (find_base_value, find_base_term): Use REG_POINTER
instead of REGNO_POINTER_FLAG.
* combine.c (nonzero_bits, num_sign_bit_copies): Likewise.
* emit-rtl.c (gen_reg_rtx): Use regno_pointer_align_length instead
of regno_pointer_flag_length. Remove code which refers to
regno_pointer_flag.
(mark_reg_pointer): Use REG_POINTER.
(free_emit_status): Remove code which refers to regno_pointer_flag.
(init_emit, mark_emit_status): Likewise.
* flow.c (dump_flow_info): Likewise.
* function.c (preserve_temp_slots): Likewise.
* integrate.c (expand_inline_function, copy_rtx_and_substitute):
Use x_regno_reg_rtx instead of regno_pointer_flag for function
pointer determination in map.
* loop.c (strength_reduce, maybe_eliminate_biv_1): Use REG_POINTER.
* predict.c (estimate_probability): Likewise.
* regclass.c (record_address_regs, reg_scan_mark_refs): Likewise.
* unroll.c (unroll_loop): Use x_regno_reg_rtx instead of
regno_pointer_flag for function pointer determination in map.
* convex.h (RTX_COSTS): Don't test regno_pointer_flag and use
REG_POINTER.
* pa.c (hppa_legitimize_address, emit_move_sequence, basereg_operand):
Use REG_POINTER.
(restore_unscaled_index_insn_codes): Revise comment.
From-SVN: r37863
* alias.c: Include basic-block.h.
(loop_p): New function.
(mark_constant_function): Use it.
* Makefile.in (alias.o): Update dependencies.
From-SVN: r37044
* alias.c: (mark_constant_function): Don't check pure functions.
Initialize and end alias analysis.
(nonlocal_mentioned_p): Rename from nonlocal_reference_p.
Don't make a special exception for recursion. Handle
UNSPEC_VOLATILE. Don't assume ASM_OPERANDS is non-local
unless it's volatile.
* local-alloc.c (equivalence): New structure.
(reg_equiv): Define.
(contains_replace_regs): Remove array and use
field in reg_equiv.
(memref_referenced_p): Likewise.
(no_equiv): Likewise.
(update_equiv_regs): Likewise.
(equiv_init_varies_p,
equiv_init_movable_p): New functions.
(update_equiv_regs): Use them. Use rtx_varies_p
instead of function_invariant_p. Process insns
from end to beginning. Allow a REG_EQUIV insn
within the same loop as a use to be moved, also
allow it to be moved out of a loop. Update
REG_DEAD notes when substituting into an insn.
From-SVN: r36957
