PR middle-end/30761
* reload1.c (eliminate_regs_in_insn): In the single_set special
case, attempt to re-recognize the insn before falling back to
having reload fix it up.
From-SVN: r122199
* fwprop.c (try_fwprop_subst): Use set_unique_reg_note
to add the REG_EQ* note.
* see.c (see_merge_one_use_extension): Likewise.
* local-alloc.c (update_equiv_regs): Likewise. Also don't
turn REG_EQUAL notes into REG_EQUIV notes if the target
register may have more than one set.
* function.c (assign_parm_setup_reg): Use set_unique_reg_note.
* gcse.c (try_replace_reg): Likewise.
* alias.c (init_alias_analysis): Use find_reg_equal_equiv_note.
* calls.c (fixup_tail_calls): Likewise. Abort if there is
more than one REG_EQUIV note.
* reload1.c (gen_reload): Use set_unique_reg_note.
From-SVN: r121821
2006-12-04 Rask Ingemann Lambertsen <rask@sygehus.dk>
* reload1.c (choose_reload_regs): Don't set byte offset when
resolving subregs of hard regs.
From-SVN: r119705
* reload1.c (delete_output_reload): Count occurrences in
CALL_INSN_FUNCTION_USAGE.
* rtlanal.c (count_occurrences): Handle EXPR_LIST nodes without
crashing at the end of the list.
From-SVN: r119571
gcc/
* reload1.c (alter_reg): Require the alignment of the stack slot to
be at least reg_max_ref_width bytes.
(scan_paradoxical_subregs): Record the largest width in
reg_max_ref_width.
From-SVN: r117252
gcc/
PR rtl-optimization/28982
* reload.c (find_reloads_address_1): Use RELOAD_OTHER for the
index of a PRE_MODIFY or POST_MODIFY address.
* reload1.c (inc_for_reload): Use find_replacement on the original
base and index registers.
gcc/testsuite/
PR rtl-optimization/28982
* gcc.c-torture/execute/pr28982a.c: New test.
* gcc.c-torture/execute/pr28982b.c: Likewise.
From-SVN: r116919
PR tree-optimization/27865
* reload1.c (forget_marked_reloads): New function.
(forget_old_reloads_1): When data are passed, just mark the registers
for later removal.
(reload_as_needed): Use the new mechanizm.
From-SVN: r116220
PR target/28146
* reload.h (reg_equiv_alt_mem_list): New declaration.
* reload1.c (reg_equiv_alt_mem_list): New definition.
(reload): Initialize it and release it.
(delete_output_reload): Use it.
* reload.c (push_reg_equiv_alt_mem): New function.
(find_reloads_toplev): Call it.
(find_reloads_address, find_reloads_address_1): Likewise.
(find_reloads_subreg_address): Likewise.
From-SVN: r116215
2006-06-22 Roger Sayle <roger@eyesopen.com>
Steven Bosscher <stevenb.gcc@gmail.com>
PR target/27531
* reload1.c (gen_reload): Call mark_jump_label on the new insns
generated by gen_move_insn to add REG_LABEL notes if necessary.
* gcc.dg/pr27531-1.c: New test case.
Co-Authored-By: Steven Bosscher <stevenb.gcc@gmail.com>
From-SVN: r114921
2006-06-14 Andreas Krebbel <krebbel1@de.ibm.com>
PR middle-end/27959
* reload1.c (reload): Remove registers returned by update_eliminables
from used_spill_regs.
2006-06-14 Andreas Krebbel <krebbel1@de.ibm.com>
PR middle-end/27959
* gcc.dg/pr27959.c: New testcase.
From-SVN: r114640
* local-alloc.c (rest_of_handle_local_alloc): Use VEC instead
of VARRAY.
* reload1.c (reg_equiv_memory_loc_varray): Rename to
reg_equiv_memory_loc_vec. Change the type to VEC(rtx,gc) *.
(init_reload, reload): Use VEC instead of VARRAY.
* reload.h: Update the prototype for
reg_equiv_memory_loc_varray.
From-SVN: r112955
2006-03-29 Paul Brook <paul@codesourcery.com>
* reload1.c (choose_reload_regs): Check for all RTX_AUTOINC operators.
(inc_for_reload): Handle PRE_MODIFY and POST_MODIFY addresses.
From-SVN: r112500
* config/bfin/bfin-protos.h (bfin_dsp_memref_p): Declare.
* config/bfin/bfin.c (bfin_dsp_memref_p): New function.
(bfin_valid_reg_p): Test for pseudos explicitly and use only
REGNO_MODE_CODE_OK_FOR_BASE_P. New args MODE and OUTER_CODE; all
callers changed.
* config/bfin/bfin.h (PREG_P): Use P_REGNO_P.
(IREG_P, P_REGNO_P, I_REGNO_P): New macros.
(enum reg_class, REG_CLASS_CONTENTS): Add IPREGS.
(BASE_REG_CLASS, REG_OK_FOR_BASE_P, REG_OK_FOR_INDEX_P,
REGNO_OK_FOR_BASE_STRICT_P, REGNO_OK_FOR_BASE_NONSTRICT_P): Delete
macros.
(IREG_POSSIBLE_P, MODE_CODE_BASE_REG_CLASS,
REGNO_MODE_CODE_OK_FOR_BASE_P): New macros.
(REGNO_REG_CLASS): ARGP is in PREGS.
* config/bfin/bfin.md (movhi_insn): Allow for addresses containing
IREGS.
(zero_extendhisi2, extendhisi2): Likewise; changed to define_and_split
to deal with those addresses.
* addresses.h: New file.
* caller-save.c: Include "addresses.h".
(init_caller_save): Use new base_reg_class function.
* rtl-factoring.c: Include "addresses.h".
(recompute_gain_for_pattern_seq): Use new function ok_for_base_p_1.
* recog.c: Include "addresses.h".
(preprocess_constraints): Use new base_reg_class function.
* regrename.c: Include "addresses.h".
(scan_rtx_address): Use new regno_ok_for_base_p and base_reg_class
functions. Keep track of a new var INDEX_CODE to compute valid
classes.
(replace_oldest_value_addr): Likewise.
(replace_oldest_value_mem): Use base_reg_class.
* reload.c: Include "addresses.h".
(REGNO_MODE_OK_FOR_BASE_P, REG_MODE_OK_FOR_BASE_P): Delete macros.
(find_reloads): Use new base_reg_class function.
(find_reloads_address): Likewise; also use regno_ok_for_base_p.
(find_reloads_address_1): Likewise. New args OUTER_CODE and INDEX_CODE;
all callers and prototype changed.
* reload1.c: Include "addresses.h".
(maybe_fix_stack_asms): Use base_reg_class.
* regclass.c: Include "addresses.h".
(ok_for_index_p_nonstrict, ok_for_base_p_nonstrict): New functions.
(init_reg_autoinc): Use new base_reg_class function.
(record_reg_classes): Likewise.
(record_address_regs): Delete arg CLASS; add args CONTEXT, MODE,
OUTER_CODE and INDEX_CODE. All callers and prototype changed.
Use new args to compute necessary class.
* Makefile.in (regclass.o, reload.o, reload1.o, caller-save.o, recog.o,
regrename.o, rtl-factoring.o): Update dependencies.
* doc/tm.texi (MODE_CODE_BASE_REG_CLASS): Document.
(REGNO_MODE_CODE_OK_FOR_BASE_P): Likewise.
(REG_OK_FOR_BASE_P, REG_MODE_OK_FOR_BASE_P, REG_MODE_OK_FOR_REG_BASE_P,
REG_OK_FOR_INDEX_P): Delete documentation.
From-SVN: r112248
* cselib.c (cselib_init): Change RTX_SIZE to RTX_CODE_SIZE.
* emit-rtl.c (copy_rtx_if_shared_1): Use shallow_copy_rtx.
(copy_insn_1): Likewise. Don't copy each field individually.
Reindent.
* read-rtl.c (apply_macro_to_rtx): Use RTX_CODE_SIZE instead
of RTX_SIZE.
* reload1.c (eliminate_regs): Use shallow_copy_rtx.
* rtl.c (rtx_size): Rename variable to...
(rtx_code_size): ...this.
(rtx_size): New function.
(rtx_alloc_stat): Use RTX_CODE_SIZE instead of RTX_SIZE.
(copy_rtx): Use shallow_copy_rtx. Don't copy each field individually.
Reindent.
(shallow_copy_rtx_stat): Use rtx_size instead of RTX_SIZE.
* rtl.h (rtx_code_size): New variable.
(rtx_size): Change from a variable to a function.
(RTX_SIZE): Rename to...
(RTX_CODE_SIZE): ...this.
PR target/9703
PR tree-optimization/17106
* doc/tm.texi (TARGET_USE_BLOCKS_FOR_CONSTANT_P): Document.
(Anchored Addresses): New section.
* doc/invoke.texi (-fsection-anchors): Document.
* doc/rtl.texi (SYMBOL_REF_IN_BLOCK_P, SYMBOL_FLAG_IN_BLOCK): Likewise.
(SYMBOL_REF_ANCHOR_P, SYMBOL_FLAG_ANCHOR): Likewise.
(SYMBOL_REF_BLOCK, SYMBOL_REF_BLOCK_OFFSET): Likewise.
* hooks.c (hook_bool_mode_rtx_false): New function.
* hooks.h (hook_bool_mode_rtx_false): Declare.
* gengtype.c (create_optional_field): New function.
(adjust_field_rtx_def): Add the "block_sym" field for SYMBOL_REFs when
SYMBOL_REF_IN_BLOCK_P is true.
* target.h (output_anchor, use_blocks_for_constant_p): New hooks.
(min_anchor_offset, max_anchor_offset): Likewise.
(use_anchors_for_symbol_p): New hook.
* toplev.c (compile_file): Call output_object_blocks.
(target_supports_section_anchors_p): New function.
(process_options): Check that -fsection-anchors is only used on
targets that support it and when -funit-at-a-time is in effect.
* tree-ssa-loop-ivopts.c (prepare_decl_rtl): Only create DECL_RTL
if the decl doesn't have one.
* dwarf2out.c: Remove instantiations of VEC(rtx,gc).
* expr.c (emit_move_multi_word, emit_move_insn): Pass the result
of force_const_mem through use_anchored_address.
(expand_expr_constant): New function.
(expand_expr_addr_expr_1): Call it. Use the same modifier when
calling expand_expr for INDIRECT_REF.
(expand_expr_real_1): Pass DECL_RTL through use_anchored_address
for all modifiers except EXPAND_INITIALIZER. Use expand_expr_constant.
* expr.h (use_anchored_address): Declare.
* loop-unroll.c: Don't declare rtx vectors here.
* explow.c: Include output.h.
(validize_mem): Call use_anchored_address.
(use_anchored_address): New function.
* common.opt (-fsection-anchors): New switch.
* varasm.c (object_block_htab, anchor_labelno): New variables.
(hash_section, object_block_entry_eq, object_block_entry_hash)
(use_object_blocks_p, get_block_for_section, create_block_symbol)
(use_blocks_for_decl_p, change_symbol_section): New functions.
(get_variable_section): New function, split out from assemble_variable.
(make_decl_rtl): Create a block symbol if use_object_blocks_p and
use_blocks_for_decl_p say so. Use change_symbol_section if the
symbol has already been created.
(assemble_variable_contents): New function, split out from...
(assemble_variable): ...here. Don't output any code for
block symbols; just pass them to place_block_symbol.
Use get_variable_section and assemble_variable_contents.
(get_constant_alignment, get_constant_section, get_constant_size): New
functions, split from output_constant_def_contents.
(build_constant_desc): Create a block symbol if use_object_blocks_p
says so. Or into SYMBOL_REF_FLAGS.
(assemble_constant_contents): New function, split from...
(output_constant_def_contents): ...here. Don't output any code
for block symbols; just pass them to place_section_symbol.
Use get_constant_section and get_constant_alignment.
(force_const_mem): Create a block symbol if use_object_blocks_p and
use_blocks_for_constant_p say so. Or into SYMBOL_REF_FLAGS.
(output_constant_pool_1): Add an explicit alignment argument.
Don't switch sections here.
(output_constant_pool): Adjust call to output_constant_pool_1.
Switch sections here instead. Don't output anything for block symbols;
just pass them to place_block_symbol.
(init_varasm_once): Initialize object_block_htab.
(default_encode_section_info): Keep the old SYMBOL_FLAG_IN_BLOCK.
(default_asm_output_anchor, default_use_aenchors_for_symbol_p)
(place_block_symbol, get_section_anchor, output_object_block)
(output_object_block_htab, output_object_blocks): New functions.
* target-def.h (TARGET_ASM_OUTPUT_ANCHOR): New macro.
(TARGET_ASM_OUT): Include it.
(TARGET_USE_BLOCKS_FOR_CONSTANT_P): New macro.
(TARGET_MIN_ANCHOR_OFFSET, TARGET_MAX_ANCHOR_OFFSET): New macros.
(TARGET_USE_ANCHORS_FOR_SYMBOL_P): New macro.
(TARGET_INITIALIZER): Include them.
* rtl.c (rtl_check_failed_block_symbol): New function.
* rtl.h: Include vec.h. Declare heap and gc rtx vectors.
(block_symbol, object_block): New structures.
(rtx_def): Add a block_symbol field to the union.
(BLOCK_SYMBOL_CHECK): New macro.
(rtl_check_failed_block_symbol): Declare.
(SYMBOL_FLAG_IN_BLOCK, SYMBOL_FLAG_ANCHOR): New SYMBOL_REF flags.
(SYMBOL_REF_IN_BLOCK_P, SYMBOL_REF_ANCHOR_P): New predicates.
(SYMBOL_FLAG_MACH_DEP_SHIFT): Bump by 2.
(SYMBOL_REF_BLOCK, SYMBOL_REF_BLOCK_OFFSET): New accessors.
* output.h (output_section_symbols): Declare.
(object_block): Name structure.
(place_section_symbol, get_section_anchor, default_asm_output_anchor)
(default_use_anchors_for_symbol_p): Declare.
* Makefile.in (RTL_BASE_H): Add vec.h.
(explow.o): Depend on output.h.
* config/rs6000/rs6000.c (TARGET_MIN_ANCHOR_OFFSET): Override default.
(TARGET_MAX_ANCHOR_OFFSET): Likewise.
(TARGET_USE_BLOCKS_FOR_CONSTANT_P): Likewise.
(rs6000_use_blocks_for_constant_p): New function.
From-SVN: r111254
2006-02-16 Denis Nagorny <denis_nagorny@linux.intel.com>
PR rtl-optimization/25603
* reload.c (reg_inc_found_and_valid_p): New. Check REG_INC note.
(regno_clobbered_p): Use it. Reusing SETS argument for REG_INC case.
* reload1.c (choose_reload_regs): Added call of regno_clobbered_p
with new meaning of SETS.
From-SVN: r111162
PR rtl-optimization/25310
* reload1.c (eliminate_regs_in_insn): Handle lowpart SUBREGs
of the eliminable register when substituting into a PLUS.
PR rtl-optimization/25310
* gcc.c-torture/compile/pr25310.c: New test.
From-SVN: r108543
PR middle-end/24912
PR middle-end/24750
* reload.c (find_reloads_address_1): Mention dependency on
gen_reload.
* reload1.c (gen_reload): For IN with an unary operation, try
moving inner expression to OUT if trivial SET is not valid.
Confirm that the result is valid. Move common code block into...
(emit_insn_if_valid_for_reload): New function.
From-SVN: r107231
PR rtl-opt/24160
PR target/24621
* reload1.c (reg_equiv_invariant): New.
(reload): Allocate, initialize, and free it.
(calculate_needs_all_insns): Check it when skipping equivalence
setting insns.
(alter_reg): Likewise.
(eliminate_regs_1): Rename from eliminate_regs. Add new
may_use_invariant argument; only use reg_equiv_invariant when true.
(eliminate_regs): New.
(eliminate_regs_in_insn): Use eliminate_regs_1; track when we're in
a context for which may_use_invariant may be true.
Co-Authored-By: J"orn Rennecke <joern.rennecke@st.com>
Co-Authored-By: Ulrich Weigand <uweigand@de.ibm.com>
From-SVN: r107093
2005-09-07 Andreas Krebbel <krebbel1@de.ibm.com>
* reload1.c (fixup_eh_region_note): Remove assertion.
(fixup_abnormal_edges): Reverted removal of call to
find_many_sub_basic_blocks made on 2005-08-31.
From-SVN: r103984
* Makefile.in (local-alloc.o): Depend on $(GGC_H) and reload.h.
* local-alloc.c: Include "ggc.h" and "reload.h".
(struct equivalence): New member is_arg_equivalence.
(local_alloc): Always call update_equiv_regs.
(update_equiv_regs): Allocate reg_equiv_init; set reg_equiv_init_size.
Detect equivalences made by stores to memory in a second pass.
Return early if not optimizing.
Initialize reg_equiv_init for all equivalences; treat equivalences for
REG_EQUIV notes existing before this pass specially.
(no_equiv): Don't clear reg_equiv_init or remove notes if the
is_arg_equivalence field is set.
* reload.h (reg_equiv_init, reg_equiv_init_size): Declare.
* reload1.c (reg_equiv_init): No longer static.
(reg_equiv_init_size): New variable.
(reload): Don't allocate reg_equiv_init; don't free it when done but
clear it.
Restructure equivalence set up code not to set reg_equiv_init, but to
clear it when we can't use an equivalence.
Undo change disabling equivalences for MEM_READONLY_P memrefs.
Dump equivalencing insns to dump_file.
From-SVN: r100975
Ulrich Weigand
Steven Bosscher
Kaz Kojima
DJ Delorie
Richard Sandiford
Nathan Sidwell
Peter Bergner
Rask Ingemann Lambertsen
Bernd Schmidt
Eric Christopher
Ben Elliston
Jan Hubicka
Jan Hubicka
Alexandre Oliva
Roger Sayle
Andreas Krebbel
Kazu Hirata
Paul Brook
Denis Nagorny
J"orn Rennecke
Marcin Dalecki
Ian Lance Taylor
Alan Modra
Hans-Peter Nilsson
Richard Henderson
Daniel Jacobowitz
James E Wilson
Kelley Cook