* final.c (cleanup_subreg_operands): New function.
(final_scan_insn): Use it.
(alter_subreg): Clear the "used" field when we turn a SUBREG into
a REG.
* reload1.c (reload): Delete CLOBBER insns and also cleanup SUBREG
operands when reload has finished.
* reload.h (cleanup_subreg_operands): Declare..
* flow.c (life_analysis_1): No longer delete CLOBBER insns after
reload. Handled in reload itself.
Should fix sh, sparc and probably other problems with post-reload life pass
and scheduling interactions.
From-SVN: r23377
* Makefile.in (insn-extract.o): Fix dependencies.
* genextract.c (main): Generate includes for insn-config.h and
recog.h.
Delete generation of declarations which are now in recog.h.
* genrecog.c (main): Delete generation of definitions which are
now in recog.c.
* local-alloc.c (block_alloc): Use extract_insn and the variables
it sets up instead of looking up values by insn_code.
* recog.c (recog_operand, recog_operand_loc, recog_dup_loc,
recog_dup_num): Define here instead of generating the definition in
genrecog.c.
(recog_n_operands, recog_n_dups, recog_n_alternatives,
recog_operand_mode, recog_constraints, recog_operand_address_p):
New variables.
(extract_insn): New function.
* recog.h (extract_insn): Declare function.
(which_alternative, recog_n_operands, recog_n_dups,
recog_n_alternatives, recog_operand_mode, recog_constraints,
recog_operand_address_p): Declare variables.
* regclass.c (n_occurrences): New static function.
* reload.c (n_occurrences): Delete function.
(find_reloads): Use extract_insn.
* reload.h (n_occurrences): Delete declaration.
From-SVN: r23147
Improve reload inheritance;
* reload.c (reload_out_reg): New variable.
(loc_mentioned_in_p, remove_address_replacements): New functions.
(remove_replacements): Deleted.
(push_reload): Set reload_out_reg[i].
When merging, also set reload_{in,out}_reg[i], and remove
duplicate address reloads.
(combine_reloads): Copy reload_out_reg[i].
(find_reloads): Do make_memloc substitution also when
reg_equiv_memory_loc[regno] and num_not_at_initial_offset
are both nonzero.
Include *recog_operand_loc in commutativity operand changes.
Generate optional output reloads.
Delete reference to n_memlocs. Don't set *recog_operand_loc before
processing operands. Call make_memloc in reg_equiv_address code.
Set *recog_operand_loc only after processing operands, and only
if replace is true. Return a value.
When changing address reload types for operands that didn't get
reloaded, use RELOAD_FOR_OPADDR_ADDRESS for
RELOAD_FOR_INPADDR_ADDRESS / RELOAD_FOR_OUTADDR_ADDRESS reloads.
Don't emit USEs for pseudo SUBREGs when not replacing.
(find_reloads_address): Do make_memloc substitution also when
reg_equiv_memory_loc[regno] and num_not_at_initial_offset
are both nonzero.
(find_reloads_toplev): Likewise.
Call make_memloc in reg_equiv_address code.
(debug_reload_to_stream): Add code to output reload_out_reg.
(make_memloc): Delete local variable i, ifdefed out code, and
references to memlocs and n_memlocs.
(memlocs, n_memlocs): Delete.
(push_secondary_reload): Clear reload_out_reg.
(find_reloads_address_1): Provide memrefloc argument to all calls
to find_reloads_address.
In AUTO_INC code, handle non-directly addressable equivalences properly.
* reload.h (reload_out_reg, num_not_at_initial_offset): Declare.
(find_reloads): Add return type.
(remove_address_replacements, deallocate_reload_reg): Declare.
* reload1.c (num_not_at_initial_offset): No longer static.
(delete_address_reloads, delete_address_reloads_1): Likewise.
(deallocate_reload_reg): New function.
(spill_reg_stored_to): New array.
(eliminate_regs): Don't substitute from reg_equiv_memory_loc.
(eliminate_regs_in_insn): Move assignments of previous_offset and
max_offset fields, and recalculation of num_not_at_initial_offset
into new static function:
(update_eliminable_offsets) .
(reload_as_needed): Call update_eliminable_offsetss after calling
find_reloads.
Call forget_old_reloads_1 with contents of reloaded auto_inc
expressions if the actual addressing can't be changed to match the
auto_inc.
(choose_reload_regs): For inheritance, replace
reload_reg_free_before_p test with reload_reg_ions.
(emit_reload_insns): If reload_in is a MEM, set OLD to
reload_in_reg[j].
Don't reload directly from oldequiv; if it's a pseudo with a
stack slot, use reload_in[j].
Check that reload_in_reg[j] is a MEM before replacing reload_in
from reg_reloaded_contents.
Include non-spill registers in reload inheritance processing.
Also try to use reload_out_reg to set spill_reg_store /
reg_last_reload_reg.
In code to set new_spill_reg_store, use single_set to find out if
there is a single set.
Add code that allows to delete optional output reloads.
Add code to allow deletion of output reloads that use no spill reg.
At the end, set reload_override_in to oldequiv.
Also call delete_output_reload if reload_out_reg is equal to old
in oldequiv code.
Add code to call delete_output_reload for stores with no matching load.
Set / use spill_reg_stored_to.
Handle case where secondary output reload uses a temporary, but
actual store isn't found.
When looking for a store of a value not loaded in order to call
delete_output_reload, count_occurences should return 0 for no
loads; but discount inherited input reloadill_reg_stored_to.
Do checks for extra uses of REG. Changed all
callers.
Use delete_address_reloads.
(reload): Take return value of find_reloads into account.
If a no-op set needs more than one reload, delete it.
(reload_reg_free_before_p): RELOAD_FOR_INPUT
can ignore RELOAD_FOR_INPUT_ADDRESS / RELOAD_FOR_INPADDR_ADDRESS
for the same operand.
(clear_reload_reg_in_use): Check for other reloads that keep a
register in use.
(reload_reg_free_for_value_p): handle RELOAD_FOR_OPERAND_ADDRESS /
RELOAD_FOR_OPADDR_ADDR.
Take into account when an address address reload is only needed
for the address reload we are considering.
(count_occurrences): Use rtx_equal_p for MEMs.
(inc_for_reload): Return instruction that stores into RELOADREG.
New argument two, IN, and rtx. Changed all callers.
(calculate_needs_all_insns, reload_as_needed):
Don't clear after_call for a CLOBBER.
Keep track of how many hard registers need to be copied from
after_call, and don't clear after_call before we have seen
that much copies, or we see a different instruction.
From-SVN: r23143
* reload.h (compute_use_by_pseudos): Declare.
* reload1.c (spilled_pseudos, insns_need_reload): New variables.
(something_needs_reloads): Delete variable.
(finish_spills): New function.
(compute_use_by_pseudos): New function.
(delete_caller_save_insns): Lose argument FIRST. All callers changed.
Use the reload_insn_chain instead of walking the rtl directly.
(reload): Allocate and free spilled_pseudos.
Ensure that all calls of spill_hard_reg are followed by a call to
finish_spills.
Use the insns_need_reload list instead of something_needs_reloads
to find out if reload_as_needed must be called.
Clear unused_insn_chains at the end.
(calculate_needs_all_insns): Lose FIRST parameter. All callers
changed.
Delete code to keep track of current basic block.
Walk reload_insn_chain instead of the rtl structure. Build the
insns_need_reload chain.
Remember which insns need reloading/elimination by setting the
appropriate fields in struct insn_chain, not by putting modes on the
insn.
(calculate_needs): Lose THIS_BLOCK arg. Accept arg CHAIN instead of
arg INSN. All callers changed.
Delete declaration of struct needs.
Don't set something_needs_reloads.
Record insn needs in the CHAIN argument.
(spill_hard_reg): Record the affected pseudos in spilled_pseudos.
(reload_as_needed): Lose FIRST arg. All callers changed.
Walk the reload_insn_chain instead of the rtx structure.
Delete code to keep track of current basic block.
Rename one of the NEXT variables to OLD_NEXT.
(allocate_reload_reg): Accept arg CHAIN instead of arg INSN. All
callers changed.
(choose_reload_regs): Likewise.
(emit_reload_insns): Replace INSN and BB args with arg CHAIN. All
callers changed.
* caller-save.c (MOVE_MAX_WORDS): New macro. Use it throughout
instead of (MOVE_MAX / UNITS_PER_WORD) computation.
(hard_regs_live, hard_regs_need_restore): Delete variables.
(n_regs_saved): Now static.
(referenced_regs, this_insn_sets): New variables.
(setup_save_areas): Restructure the code a bit.
(restore_referenced_regs): Delete function.
(mark_referenced_regs): New function, similar to the old
restore_referenced_regs, but mark registers in referenced_regs.
(clear_reg_live): Delete function.
(mark_set_regs): Renamed from set_reg_live. All callers changed.
Only mark registers in this_insn_sets.
(save_call_clobbered_regs): Rework this function to walk the
reload_insn_chain instead of using the list of instructions directly.
Delete code to keep track of register lives, compute live regs on the
fly from information in the chain.
Instead of calling restore_referenced_regs, use mark_referenced_regs,
then walk the set it computes and call insert_restore as appropriate.
(insert_restore): Lose INSN and BLOCK args. Add CHAIN arg. All
callers changed.
Restructure the code a bit. Test hard_regs_saved instead of
hard_regs_need_restore.
(insert_save): Lose INSN and BLOCK args. Add CHAIN and TO_SAVE
args. All callers changed.
Restructure the code a bit. Use TO_SAVE to determine which regs to
save instead of more complicated test.
(insert_one_arg): Lose INSN and BLOCK args. Add CHAIN arg. All
callers changed.
Create a new insn_chain structure for the new insn and place it
into the chain.
* rtl.texi: Update documentation to reflect that reload no longer
puts modes on the insns.
From-SVN: r23074
* caller-save.c (restore_referenced_regs): Lose mode argument.
(insert_save): Lose mode argument.
(insert_restore): Lose mode argument.
(insert_one_insn): Lose mode argument.
(save_call_clobbered_regs): Lose mode argument.
(setup_save_areas): Take no argument and return void. All callers
changed.
Don't verify validity of memory addresses.
* reload.h (setup_save_ares): Adjust prototype.
(save_call_clobbered_regs): Likewise.
* reload1.c (delete_caller_save_insns): New function.
(caller_save_spill_class): Delete variable.
(caller_save_group_size): Delete variable.
(reload): Call setup_save_areas and save_call_clobbered_regs
in the main loop, before calling calculate_needs_all_insns.
Don't call save_call_clobbered_regs after the loop.
Call delete_caller_save_insns at the end of an iteration if
something changed.
Delete code to manage caller_save_spill_class.
Emit the final note before setting reload_first_uid.
Simplify test that determines whether reload_as_needed gets run.
(calculate_needs): Delete code to manage caller_save_spill_class.
From-SVN: r22876
* Makefile.in (stupid.o): Update dependencies.
(global.o): Likewise.
* global.c: Include reload.h
(reg_becomes_live): New function.
(reg_dies): New function.
(build_insn_chain): New function.
(global_alloc): Call build_insn_chain before calling reload.
* reload.h (struct needs): New structure definition.
(struct insn_chain): Likewise.
(reload_insn_chain): Declare variable.
(new_insn_chain): Declare function.
* reload1.c (reload_startobj): New variable.
(reload_insn_chain): New variable.
(unused_insn_chains): New variable.
(new_insn_chain): New function.
(init_reload): Initialize reload_startobj, not reload_firstobj.
(reload): Initialize reload_firstobj.
Before returning, free everything on the reload_obstack.
* stupid.c: Include insn-config.h, reload.h and basic-block.h.
(reg_where_dead_chain, reg_where_born_exact, reg_where_born_clobber,
current_chain): New variables.
(reg_where_born): Delete variable.
(REG_WHERE_BORN): New macro.
(find_clobbered_regs): New function.
(stupid_life_analysis): Don't allocate/free reg_where_born.
Allocate and free reg_where_born_exact, reg_where_born_clobber,
reg_where_dead_chain.
Use REG_WHERE_BORN instead of reg_where_born.
While processing the insns, build the reload_insn_chain with
information about register lifetimes.
(stupid_reg_compare): Use REG_WHERE_BORN instead of reg_where_born.
(stupid_mark_refs): Replace arg INSN with arg CHAIN. All callers
changed.
Compute and information about birth and death of pseudo registers in
reg_where_dead_chain, reg_where_born_exact and reg_where_born_clobber.
Delete code to set elements of reg_where_born.
From-SVN: r22862
* Makefile.in (c-lang.o): Depend on c-tree.h, c-lex.h and toplev.h.
(c-lex.o): Depend on output.h.
(c-common.o): Likewise.
(stmt.o): Likewise.
(calls.o): Likewise.
(integrate.o): Depend on toplev.h.
(regclass.o): Depend on output.h.
(final.o): Depend on reload.h.
* c-common.c: Include output.h.
(check_format_info): Remove unused variable `integral_format'.
* c-decl.c (print_lang_decl): Mark parameters `file', `node' and
`indent' with ATTRIBUTE_UNUSED.
(print_lang_type): Likewise.
(maybe_build_cleanup): Likewise for parameter `decl'.
(copy_lang_decl): Likewise for parameter `node'.
* c-lang.c: Include c-tree.h, c-lex.h and toplev.h.
(lang_print_xnode): Mark parameters `file', `node' and `indent'
with ATTRIBUTE_UNUSED.
(lookup_interface): Likewise for parameter `arg'.
(is_class_name): Likewise.
(maybe_objc_check_decl): Likewise for parameter `decl'.
(maybe_objc_comptypes): Likewise for parameters `lhs', `rhs' and
`reflexive'.
(maybe_objc_method_name): Likewise for parameter `decl'.
(build_objc_string): Likewise for parameters `len' and `str'.
* c-lex.c: Include output.h.
* c-lex.h (position_after_white_space): Correct typo in prototype.
* c-tree.h (finish_file, c_expand_start_cond, c_expand_start_else,
c_expand_end_cond, init_iterators): Add prototypes.
* caller-save.c (set_reg_live): Mark parameters `reg' and `setter'
with ATTRIBUTE_UNUSED.
* calls.c: Include output.h.
* cccp.c (pipe_closed): Mark parameter `signo' with
ATTRIBUTE_UNUSED.
* combine.c: Move inclusion of expr.h to after insn-config.h.
* iris6.h (ASM_IDENTIFY_GCC, ASM_IDENTIFY_LANGUAGE): Don't define
as empty, rather define as ((void)0).
* sparc.c (sparc_check_64): Add braces around ambiguous `else'.
Add parentheses around assignment used as truth value.
* cplus-dem.c (squangle_mop_up): Change return type to void.
(internal_cplus_demangle): Remove unused parameter `options'.
All callers changed.
(cplus_demangle_opname): Remove function wide variable `int i' and
replace with `size_t i' at each location where it is used.
(cplus_demangle_opname): change type of `i' from int to size_t.
* cppexp.c (right_shift): Mark parameter `pfile' with
ATTRIBUTE_UNUSED.
* cpphash.c (cpp_lookup): Likewise.
(cpp_hash_cleanup): Likewise.
* cpplib.c (parse_name): Add a prototype and make it static.
(null_underflow): Mark parameter `pfile' with ATTRIBUTE_UNUSED.
(null_cleanup): Likewise for parameters `pbuf' and `pfile'.
(macro_cleanup): Likewise for parameter `pfile'.
(file_cleanup): Likewise.
* cpplib.h (cpp_reader_init, cpp_options_init, cpp_start_read,
cpp_read_check_assertion, skip_rest_of_line): Add prototypes.
* crtstuff.c (force_to_data, __CTOR_LIST__, force_to_data,
__DTOR_END__, __FRAME_END__): Mark with ATTRIBUTE_UNUSED.
* cse.c (cse_check_loop_start): Mark parameter `set' with
ATTRIBUTE_UNUSED.
* dbxout.c (flag_minimal_debug, have_used_extensions,
source_label_number): Move inside macro wrapper check against
defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO).
* dwarf2out.c (gen_entry_point_die): Hide prototype and definition.
* except.h (doing_eh): Provide prototype.
* expr.c: Move inclusion of expr.h to after insn-config.h.
* final.c: Include reload.h.
(shorten_branches): Cast the first argument of bzero to char *.
* fix-header.c (cpp_print_containing_files): Mark parameter
`pfile' with ATTRIBUTE_UNUSED.
(cpp_fatal): Likewise.
* flow.c (find_basic_blocks_1): Cast the first argument of bzero
to char *.
* genattrtab.c (make_length_attrs): Change the type of variable
`i' from int to size_t.
(zero_fn): Mark parameter `exp' with ATTRIBUTE_UNUSED.
(one_fn): Likewise.
* genextract.c (main): When generating insn-extract.c, mark
variable `junk' with ATTRIBUTE_UNUSED.
* gengenrtl.c (gencode): When generating genrtl.c, cast the first
argument of bzero to char*.
* integrate.c: Include toplev.h.
* libgcc2.c: Wrap `struct exception_table' and
`find_exception_handler' in macro DWARF2_UNWIND_INFO.
* objc/Make-lang.in (objc-act.o): Depend on toplev.h.
* objc/objc-act.c: Include toplev.h.
(lang_print_xnode): Mark parameters `file', `node' and `indent'
with ATTRIBUTE_UNUSED.
(finish_protocol): Likewise for parameter `protocol'.
* output.h (declare_weak): Add prototype.
(decode_reg_name): Don't wrap with TREE_CODE macro.
(assemble_alias): Add prototype.
* regclass.c: Include output.h.
* reload.h (reloads_conflict): Add prototype.
* rtl.h (print_rtl_single, mark_elimiation, reg_class_subset_p,
output_func_start_profiler): Add prototypes.
* rtlanal.c (reg_set_p_1): Mark parameters `x' and `pat' with
ATTRIBUTE_UNUSED.
* scan-decls.c: Include scan.h.
* scan.h (recognized_function, recognized_extern): Add prototypes.
* stmt.c: Include output.h.
* toplev.c (error_for_asm, warning_for_asm): Remove prototypes.
(output_lang_identify): Hide prototype and definition.
(float_signal): Mark parameter `signo' with ATTRIBUTE_UNUSED.
(pipe_closed): Likewise.
* toplev.h (count_error, strip_off_ending, error_for_asm,
warning_for_asm): Add prototypes.
From-SVN: r19712
Change MEMORY_MOVE_COST defs and uses to be able to take register class into
account. Change mips def to actually do so, others to just ignore extra args.
Doc changes too.
From-SVN: r18621
* regmove.c: New implementation of regmove pass.
* local-alloc.c (optimize_reg_copy_1, optimize_reg_copy_2): Remove
decls, make them have external linkage. Return a value from
optimize_reg_copy_1.
* reload.h (count_occurrences): Add decl.
* reload1.c (count_occurrences): Delete decl, make it have external
linkage.
* rtl.h (optimize_reg_copy_1, optimize_reg_copy_2): Declare.
Co-Authored-By: Jeffrey A Law <law@cygnus.com>
From-SVN: r17316
* reload.h, reload1.c (eliminate_regs), caller-save.c, dbxout.c,
dwarfout.c, dwarf2out.c, reload.c, sdbout.c: Revert March 15 change.
* reload.c (push_reload): If WORD_REGISTER_OPERATIONS, reload the
SUBREG_REG if the word count is unchanged.
* reload1.c (eliminate_regs) [case SET]: If W_R_O, preserve
subregs of identical word size for push_reload.
From-SVN: r17105
and caller-save.c.
(reload_strict_low, reload_needed_for_multiple, reload_needed_for): Deleted.
(reload_opnum): New array.
(enum reload_type): Renamed from reload_when_needed and expanded to include
more reload types.
(reload_n_operands): New variable.
From-SVN: r3912
Jeffrey A Law
Bernd Schmidt
J"orn Rennecke
Kaveh R. Ghazi
Jeff Law
Ken Raeburn
Richard Henderson
Richard Kenner
Ian Lance Taylor
Richard Stallman
Jim Wilson
Charles Hannum