2002-06-05 David S. Miller <davem@redhat.com>
Delete SEQUENCE rtl usage outside of reorg and ssa passes.
* rtl.h (gen_sequence, emit_insns, emit_insns_before,
emit_insns_before_scope, emit_insns_after,
emit_insns_after_scope): Delete declaration.
* ada/misc.c (insert_code_for): Use emit_insn* instead of
emit_insns_foo.
* config/alpha/alpha.c (alpha_set_memflags_1): Abort on SEQUENCE.
(alpha_set_memflags): Fix comment.
(set_frame_related_p): Use get_insns instead of gen_sequence.
* config/alpha/alpha.md (setjmp receiver splitter): Avoid
emitting no insns.
* config/arm/arm.c (arm_finalize_pic): Use get_insns instead of
gen_sequence.
(arm_gen_load_multiple, arm_gen_store_multiple): Likewise.
* config/fr30/fr30.c (fr30_move_double): Likewise.
* config/i386/i386.c (ix86_expand_int_movcc, ix86_expand_movstr):
Likewise.
* config/ia64/ia64.c (spill_restore_mem): Likewise.
* config/ia64/ia64.md (conditional move spliiter): Avoid emitting
no insns.
* config/m32r/m32r.c (gen_split_move_double): Use get_insns
instead of gen_sequence.
* config/mips/mips.c (embedded_pic_fnaddr_reg): Likewise.
(mips_expand_prologue, mips16_gp_pseudo_reg): Likewise.
* config/sh/sh.c (sh_need_epilogue): Likewise.
* config/sparc/sparc.md (current_function_calls_alloca, flat): New
attributes.
(setjmp pattern and split): Use them to avoid splitter which emits
no RTL.
* genattrtab.c (main): Emit include of function.h
* config/stormy16/stormy16.c (xstormy16_split_cbranch): Use
get_insns instead of gen_sequence.
* config/cris/cris.c (cris_split_movdx): Likewise.
* emit-rtl.c (emit_insns*): Kill.
(try_split): Expect insn list instead of SEQUENCE.
(make_jump_insn_raw, make_call_insn_raw): Fix comments.
(emit_*insn*): Reimplement to work with INSN lists and PATTERNs.
Make them abort if a SEQUENCE is given and RTL checking is
enabled.
(emit_*_scope): Don't forget to set scope on final insn.
(gen_sequence): Move from here...
* ssa.c (gen_sequence): To here as private function.
* builtins.c (expand_builtin_apply_args): Use emit_insn_foo, fix
comments.
(expand_builtin_return, expand_builtin_mathfn): Likewise.
(expand_builtin_strlen): Use get_insns instead of gen_sequence.
(expand_builtin_saveregs): Use emit_insn_foo, fix comments.
(expand_builtin_expect_jump): Use get_insns and fix comments.
* calls.c (try_to_integrate): Use emit_insn_foo.
(expand_call, emit_library_call_value_1): Likewise.
* expr.c (emit_queue): Handle insn lists instead of SEQUENCE.
(emit_move_insn_1): Use get_insns instead of gen_sequence.
(expand_expr): Use emit_insn_foo.
* cfgrtl.c (commit_one_edge_insertion): Use emit_insn_foo.
* except.c (build_post_landing_pads): Likewise.
* flow.c (attempt_auto_inc): Likewise.
* stmt.c (expand_fixup, fixup_gotos, expand_nl_handler_label,
expand_nl_goto_receivers, expand_decl_cleanup): Likewise.
* function.c (fixup_var_refs_insn): Use get_insns instead of
gen_sequence.
(fixup_var_refs_1): Likewise and expect insn list from gen_foo.
(fixup_memory_subreg): Use get_insns instead of gen_sequence.
(fixup_stack_1, purge_addressof_1, expand_main_function,
get_arg_pointer_save_area): Likewise.
(optimize_bit_field, instantiate_virtual_regs_1, assign_parms,
expand_function_end): Use emit_insn_foo.
(record_insns, keep_stack_depressed): Work with insn list instead
of SEQUENCE, fix comments.
* ifcvt.c (noce_emit_store_flag, noce_try_store_flag,
noce_try_store_flag_constants, noce_try_store_flag_inc,
noce_try_store_flag_mask, noce_emit_cmove, noce_try_cmove_arith,
noce_try_minmax, noce_try_abs): Use emit_insn_foo.
(noce_process_if_block): Use get_insns instead of gen_sequence.
* optabs.c (add_equal_note): Work with insn list, fix comments.
(expand_binop): Expect insn list from GEN_FCN(), use emit_insn_foo.
(expand_unop, expand_complex_abs, expand_unop_insn,
expand_no_conflict_block): Likewise.
(gen_move_insn): Use get_insns instead of gen_sequence.
(gen_cond_trap): Likewise.
* integrate.c (copy_rtx_and_substitute): Likewise.
(emit_initial_value_sets): Use emit_insn_foo.
* reload1.c (emit_output_reload_insns, emit_reload_insns): Likewise.
(fixup_abnormal_edges): Avoid losing REG_NOTES more intelligently
now that RTL generators give insn lists.
* sibcall.c (replace_call_placeholder): Use emit_insn_foo.
* doloop.c (doloop_modify, doloop_modify_runtime): Use get_insns
instead of gen_sequence.
(doloop_optimize): Work with insn lists instead of SEQUENCE rtl.
* explow.c (emit_stack_save, emit_stack_restore): Use get_insns
instead of gen_sequence.
* loop.c (move_movables, emit_prefetch_instructions,
gen_add_mult, check_dbra_loop, gen_load_of_final_value):
Likewise.
(loop_regs_update): Work with insn list instead of SEQUENCE rtl.
(product_cheap_p): Likewise, and add commentary about RTL wastage
here.
* lcm.c (optimize_mode_switching): Use get_insns instead of
gen_sequence.
* profile.c (gen_edge_profiler): Likewise.
* regmove.c (copy_src_to_dest): Likewise.
* reg-stack.c (compensate_edge): Likewise and fix comment.
* gcse.c (process_insert_insn): Likewise.
(insert_insn_end_bb): Work with insn list instead of SEQUENCE rtl.
* jump.c (delete_prior_computation): Update comment.
* genemit.c (gen_expand, gen_split, main): Use get_insns instead
of gen_sequence, update comments to match.
* recog.c (peephole2_optimize): Work with insn lists instead of
SEQUENCE rtl.
* sched-vis.c (print_pattern): Abort on SEQUENCE.
* unroll.c (unroll_loop, find_splittable_givs, final_giv_value):
Use get_insns instead of gen_sequence.
(copy_loop_body): Likewise and don't emit dummy NOTE.
* genrecog.c: Don't mention SEQUENCE rtl in comments.
* combine.c (try_combine): Expect insn lists from split generator.
* reorg.c (relax_delay_slots): Emit SEQUENCE into insn list by
hand.
From-SVN: r54497
* 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
* jump.c (never_reached_warning): Add finish argument.
If finish is NULL, stop on CODE_LABEL, otherwise stop before first
real insn after end.
* rtl.h (never_reached_warning): Adjust prototype.
* cse.c (cse_insn): Pass NULL as finish to never_reached_warning.
* cfgrtl.c (flow_delete_block): Pass b->end as finish to
never_reached_warning.
* gcc.dg/Wunreachable-1.c: New test.
* gcc.dg/Wunreachable-2.c: New test.
From-SVN: r49713
* function.c (keep_stack_depressed): Major rework.
(handle_epilogue_set, emit_equiv_load): New functions.
(thread_prologue_and_epilogue_insns): keep_stack_depressed now
has return value.
* jump.c (returnjump_p_1): Also return 1 if SET with SET_IS_RETURN_P.
* rtl.h (SET_IS_RETURN_P): New macro.
From-SVN: r47250
* jump.c (squeeze_notes): Return true if no real insns were found.
* rtl.h (squeeze_notes): Adjust prototype.
* cfgcleanup.c (merge_blocks_move_predecessor_nojumps): If
squeeze_notes finds no real instructions, abort.
(merge_blocks_move_successor_nojumps): Likewise.
* loop.c (find_and_verify_loops): Likewise.
* stmt.c (expand_end_case): Likewise.
* ifcvt.c (dead_or_predicable): Return TRUE if squeeze_notes doesn't
find any real instructions.
* gcc.c-torture/compile/20011114-4.c: New test.
From-SVN: r47048
* jump.c (squeeze_notes): Take parms by reference. Handle END being
a squeezable note.
* rtl.h: Adjust.
* ifcvt.c (dead_or_predicable): Adjust.
* loop.c (find_and_verify_loops): Adjust.
* stmt.c (expand_end_case): Adjust.
* flow.c (merge_blocks_move_successor_nojumps): Adjust. Modify the
head and end insn pointers in the basic block, not just local copies.
(merge_blocks_move_predecessor_nojumps): Likewise.
From-SVN: r45107
* rtl.h (cleanup_barriers): Declare.
* jump.c (cleanup_barriers): New function.
* toplev.c (rest_of_compilation): Call cleanup_barriers
before loop optimizer and after bb_reorder.
* flow.c (back_edge_of_syntactic_loop_p): New.
(split_edge): Use it.
From-SVN: r44409
* flow.c (redirect_edge_and_branch): Bail out on complex edges.
(try_optimize_cfg): Do not remove tail recursive labels before sibcall.
* jump.c (mark_jump_label): Do not forward branches.
Co-Authored-By: Jan Hubicka <jh@suse.cz>
From-SVN: r44118
* 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
* jump.c (jump_optimize_1): Tidy.
(mark_jump_label): When changing the label in a LABEL_REF, change
update any REG_EQUAL notes as well.
From-SVN: r42318
* ifcvt.c (merge_if_block): Use any_uncondjump_p, not simplejump_p
to determine if a block has an unconditional jump at its end.
* jump.c (jump_optimize_1): When converting a conditional jump
to an unconditional jump, build the jump using gen_jump instead
of just modify operands in-place.
From-SVN: r41939
* flow.c (propagate_block_delete_insn): Handle deletion of ADDR_VEC
and ADDR_DIFF_VEC insns when the proceeding CODE_LABEL was put
into the constant pool.
* jump.c (jump_optimize_1): Remove barrier successors after all
the LABEL_NUSES counds have been computed.
(delete_barrier_successors): When deleting a tablejump insn, also
delete the jump table it uses.
* varasm.c (force_const_mem): Set LABEL_PRESERVE_P when forcing a
label into memory.
From-SVN: r41662
* flow.c (proagate_one_insn): Remove useless assignment.
* jump.c (delete_insn): Tidy.
* loop.c (try_copy_prop): When deleting an instruction with a
REG_RETVAL note, delete the entire libcall sequence.
(loop_delete_insns): New function.
* unroll.c (initial_reg_note_copy): Copy INSN_LIST notes, even if
we're not substituting into them yet.
From-SVN: r41486
Zack Weinberg
Jan Hubicka
John David Anglin
Kazu Hirata
David S. Miller
Richard Henderson
Richard Sandiford
Richard Sandiford
J"orn Rennecke
Jakub Jelinek
Jan Hubicka
Richard Kenner
Joseph Myers
Stan Shebs
Andreas Jaeger
Alexandre Oliva
Jason Merrill
Lars Brinkhoff
John Wehle
Kazu Hirata
Richard Henderson
Geoffrey Keating
Mark Mitchell
Jeffrey A Law
Kaveh R. Ghazi