i386.md (testsi to testqi spliters): New.
* i386.md (testsi to testqi spliters): New. 2002-01-14 Josef Zlomek <zlomek@matfyz.cz> cfg.c (dump_edge_info): added dumping of EDGE_CAN_FALLTHRU. Wed Jan 9 2002 Josef Zlomek <zlomj9am@artax.karlin.mff.cuni.cz> * basic-block.h: New flag EDGE_CAN_FALLTHRU * cfganal.c (set_edge_can_fallthru_flag): New function; marks the edges that can be made fallthru. Mon Nov 12 16:25:53 CET 2001 Jan Hubicka <jh@suse.cz> * cfglayout.c (cleanup_unconditional_jumps): New static function. (cfg_layout_initialize): Use it. Co-Authored-By: Pavel Nejedly <bim@atrey.karlin.mff.cuni.cz> From-SVN: r53383
This commit is contained in:
Jan Hubicka
Jan Hubicka
parent
a5c76ee6e2
commit
6c81a49011
100
gcc/ChangeLog
100
gcc/ChangeLog
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@ -1,43 +1,21 @@
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2002-05-11 Zack Weinberg <zack@codesourcery.com>
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Sat May 11 14:34:35 CEST 2002 Jan Hubicka <jh@suse.cz>
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* config/rs6000/rs6000.c (rs6000_default_long_calls,
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rs6000_longcall_switch, rs6000_set_default_type_attributes): New.
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(TARGET_SET_DEFAULT_TYPE_ATTRIBUTES): Set it.
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(rs6000_override_options): Handle -m(no-)longcall.
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(init_cumulative_args, output_mi_thunk): Check for both
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longcall and shortcall attributes on the function.
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(rs6000_attribute_table): Add "shortcall".
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(rs6000_handle_longcall_attribute): Update comment.
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(altivec_expand_unop_builtin, altivec_expand_binop_builtin,
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altivec_expand_ternop_builtin): Add default clauses to switches
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to silence warnings.
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* i386.md (testsi to testqi spliters): New.
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* config/rs6000/rs6000.h: Declare rs6000_longcall_switch and
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rs6000_default_long_calls. Define REGISTER_TARGET_PRAGMAS.
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(TARGET_OPTIONS): Add longcall and no-longcall.
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2002-01-14 Josef Zlomek <zlomek@matfyz.cz>
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* config/rs6000/rs6000.md (call_nonlocal_sysv,
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call_value_nonlocal_sysv): Split by alternatives. One pair
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accepts only SYMBOL_REFs and rejects if CALL_LONG is set in
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the call cookie. The other pair accepts only LR/CTR and has
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no restriction.
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cfg.c (dump_edge_info): added dumping of EDGE_CAN_FALLTHRU.
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* config.gcc (rs6000-*-* | powerpc*-*-* trailer stanza):
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Set c_target_objs, cxx_target_objs; add t-rs6000-c-rule to
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tmake_file.
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* config/rs6000/rs6000-c.c: New file.
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* config/rs6000/t-rs6000-c-rule: New file.
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* config/rs6000/rs6000-protos.c: Add multiple-include guard.
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Prototype rs6000_pragma_longcall.
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Wed Jan 9 2002 Josef Zlomek <zlomj9am@artax.karlin.mff.cuni.cz>
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* doc/extend.texi: Document shortcall attribute.
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* doc/invoke.texi: Document -mlongcall, -mno-longcall.
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* basic-block.h: New flag EDGE_CAN_FALLTHRU
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* cfganal.c (set_edge_can_fallthru_flag): New function; marks the edges
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that can be made fallthru.
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2002-05-12 Marek Michalkiewicz <marekm@amelek.gda.pl>
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Mon Nov 12 16:25:53 CET 2001 Jan Hubicka <jh@suse.cz>
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* config/avr/avr.c (avr_mcu_types): Update supported devices.
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* config/avr/avr.h (CPP_SPEC, LINK_SPEC, CRT_BINUTILS_SPECS): Likewise.
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* config/avr/t-avr (MULTILIB_MATCHES): Likewise.
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* cfglayout.c (cleanup_unconditional_jumps): New static function.
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(cfg_layout_initialize): Use it.
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2002-05-11 Kazu Hirata <kazu@cs.umass.edu>
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@ -240,38 +218,38 @@ Thu May 9 14:52:45 CEST 2002 Jan Hubicka <jh@suse.cz>
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* final.c (end_final): Use C trees to output data structures for profiling.
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* Makefile.in (LIBGCC_DEPS): Added missing dependency on gcov-io.h
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(profile.o): New dependency profile.h
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(final.o): New dependency profile.h
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* profile.h: New file. New global structure profile_info.
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* final.h (count_edges_instrumented_now): Declare.
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(current_function_cfg_checksum): Declare.
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(function_list): New structure.
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(functions_head, functions_tail): New static variables.
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(end_final): Emits more data, removed some -ax stuff.
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(final): Stores function names and chcksums.
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* gcov-io.h (__write_gcov_string): New function.
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(__read_gcov_string): New function.
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* gcov.c (read_profile): New function.
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(create_program_flow_graph): Uses read_profile instead of reading
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(profile.o): New dependency profile.h
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(final.o): New dependency profile.h
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* profile.h: New file. New global structure profile_info.
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* final.h (count_edges_instrumented_now): Declare.
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(current_function_cfg_checksum): Declare.
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(function_list): New structure.
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(functions_head, functions_tail): New static variables.
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(end_final): Emits more data, removed some -ax stuff.
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(final): Stores function names and chcksums.
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* gcov-io.h (__write_gcov_string): New function.
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(__read_gcov_string): New function.
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* gcov.c (read_profile): New function.
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(create_program_flow_graph): Uses read_profile instead of reading
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da_file.
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(read_files): Removed da_file checking, it's done by read_profile now.
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* libgcc2.c (bb_function_info): New structure.
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(bb): New field in structure, removed some -ax stuff.
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(__bb_exit_func): Changed structure of da_file.
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* profile.c (count_edges_instrumented_now): New global variable.
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(current_function_cfg_checksum): New global variable.
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(max_counter_in_program): New global variable.
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(get_exec_counts): New function.
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(compute_checksum): New function.
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(instrument_edges): Sets count_edges_instrumented_now.
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(compute_branch_probabilities): Uses get_exec_counts instead of
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(read_files): Removed da_file checking, it's done by read_profile now.
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* libgcc2.c (bb_function_info): New structure.
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(bb): New field in structure, removed some -ax stuff.
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(__bb_exit_func): Changed structure of da_file.
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* profile.c (count_edges_instrumented_now): New global variable.
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(current_function_cfg_checksum): New global variable.
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(max_counter_in_program): New global variable.
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(get_exec_counts): New function.
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(compute_checksum): New function.
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(instrument_edges): Sets count_edges_instrumented_now.
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(compute_branch_probabilities): Uses get_exec_counts instead of
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reading da_file.
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(branch_prob): Calls compute_checksum and writes extra data to bbg_file.
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(init_branch_prob): Removed da_file checking, done in get_exec_counts
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(branch_prob): Calls compute_checksum and writes extra data to bbg_file.
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(init_branch_prob): Removed da_file checking, done in get_exec_counts
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now.
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(end_branch_prob): Removed da_file checking, done in get_exec_counts
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(end_branch_prob): Removed da_file checking, done in get_exec_counts
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now.
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* gcov.texi: Updated information about gcov file format.
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* gcov.texi: Updated information about gcov file format.
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2002-05-09 Kazu Hirata <kazu@cs.umass.edu>
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@ -141,6 +141,7 @@ typedef struct edge_def {
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#define EDGE_EH 8
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#define EDGE_FAKE 16
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#define EDGE_DFS_BACK 32
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#define EDGE_CAN_FALLTHRU 64
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#define EDGE_COMPLEX (EDGE_ABNORMAL | EDGE_ABNORMAL_CALL | EDGE_EH)
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@ -699,6 +700,7 @@ extern conflict_graph conflict_graph_compute
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PARAMS ((regset,
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partition));
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extern bool mark_dfs_back_edges PARAMS ((void));
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extern void set_edge_can_fallthru_flag PARAMS ((void));
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extern void update_br_prob_note PARAMS ((basic_block));
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extern void fixup_abnormal_edges PARAMS ((void));
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@ -609,7 +609,7 @@ dump_edge_info (file, e, do_succ)
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if (e->flags)
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{
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static const char * const bitnames[]
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= {"fallthru", "ab", "abcall", "eh", "fake", "dfs_back"};
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= {"fallthru", "ab", "abcall", "eh", "fake", "dfs_back", "can_fallthru"};
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int comma = 0;
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int i, flags = e->flags;
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@ -189,6 +189,36 @@ mark_dfs_back_edges ()
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return found;
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}
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/* Set the flag EDGE_CAN_FALLTHRU for edges that can be fallthru. */
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void
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set_edge_can_fallthru_flag ()
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{
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int i;
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for (i = 0; i < n_basic_blocks; i++)
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{
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basic_block bb = BASIC_BLOCK (i);
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edge e;
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/* The FALLTHRU edge is also CAN_FALLTHRU edge. */
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for (e = bb->succ; e; e = e->succ_next)
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if (e->flags & EDGE_FALLTHRU)
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e->flags |= EDGE_CAN_FALLTHRU;
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/* If the BB ends with an invertable condjump all (2) edges are
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CAN_FALLTHRU edges. */
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if (!bb->succ || !bb->succ->succ_next || bb->succ->succ_next->succ_next)
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continue;
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if (!any_condjump_p (bb->end))
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continue;
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if (!invert_jump (bb->end, JUMP_LABEL (bb->end), 0))
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continue;
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invert_jump (bb->end, JUMP_LABEL (bb->end), 0);
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bb->succ->flags |= EDGE_CAN_FALLTHRU;
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bb->succ->succ_next->flags |= EDGE_CAN_FALLTHRU;
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}
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}
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/* Return true if we need to add fake edge to exit.
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Helper function for the flow_call_edges_add. */
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@ -326,9 +356,12 @@ flow_call_edges_add (blocks)
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/* Note that the following may create a new basic block
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and renumber the existing basic blocks. */
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e = split_block (bb, split_at_insn);
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if (e)
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blocks_split++;
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if (split_at_insn != bb->end)
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{
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e = split_block (bb, split_at_insn);
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if (e)
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blocks_split++;
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}
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make_edge (bb, EXIT_BLOCK_PTR, EDGE_FAKE);
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}
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@ -46,6 +46,7 @@ static void set_block_levels PARAMS ((tree, int));
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static void change_scope PARAMS ((rtx, tree, tree));
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void verify_insn_chain PARAMS ((void));
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static void cleanup_unconditional_jumps PARAMS ((void));
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static void fixup_fallthru_exit_predecessor PARAMS ((void));
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static rtx unlink_insn_chain PARAMS ((rtx, rtx));
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static rtx duplicate_insn_chain PARAMS ((rtx, rtx));
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@ -578,6 +579,76 @@ verify_insn_chain ()
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abort ();
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}
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/* Remove any unconditional jumps and forwarder block creating fallthru
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edges instead. During BB reordering fallthru edges are not required
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to target next basic block in the linear CFG layout, so the unconditional
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jumps are not needed. If LOOPS is not null, also update loop structure &
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dominators. */
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static void
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cleanup_unconditional_jumps ()
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{
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int i;
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for (i = 0; i < n_basic_blocks; i++)
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{
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basic_block bb = BASIC_BLOCK (i);
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if (!bb->succ)
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continue;
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if (bb->succ->flags & EDGE_FALLTHRU)
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continue;
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if (!bb->succ->succ_next)
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{
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rtx insn;
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if (GET_CODE (bb->head) != CODE_LABEL && forwarder_block_p (bb) && i)
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{
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basic_block prev = BASIC_BLOCK (--i);
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if (rtl_dump_file)
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fprintf (rtl_dump_file, "Removing forwarder BB %i\n",
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bb->index);
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redirect_edge_succ (bb->pred, bb->succ->dest);
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flow_delete_block (bb);
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bb = prev;
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}
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else if (simplejump_p (bb->end))
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{
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rtx jump = bb->end;
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if (rtl_dump_file)
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fprintf (rtl_dump_file, "Removing jump %i in BB %i\n",
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INSN_UID (jump), bb->index);
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delete_insn (jump);
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bb->succ->flags |= EDGE_FALLTHRU;
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}
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else
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continue;
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/* Cleanup barriers and delete ADDR_VECs in a way as they are belonging
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to removed tablejump anyway. */
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insn = NEXT_INSN (bb->end);
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while (insn
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&& (GET_CODE (insn) != NOTE
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|| NOTE_LINE_NUMBER (insn) != NOTE_INSN_BASIC_BLOCK))
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{
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rtx next = NEXT_INSN (insn);
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if (GET_CODE (insn) == BARRIER)
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delete_barrier (insn);
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else if (GET_CODE (insn) == JUMP_INSN)
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delete_insn_chain (PREV_INSN (insn), insn);
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else if (GET_CODE (insn) == CODE_LABEL)
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;
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else if (GET_CODE (insn) != NOTE)
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abort ();
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insn = next;
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}
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}
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}
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}
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/* The block falling through to exit must be the last one in the
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reordered chain. Ensure that this condition is met. */
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static void
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@ -767,6 +838,14 @@ cfg_layout_redirect_edge (e, dest)
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}
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else
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redirect_edge_and_branch (e, dest);
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/* We don't want simplejumps in the insn stream during cfglayout. */
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if (simplejump_p (src->end))
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{
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delete_insn (src->end);
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delete_barrier (NEXT_INSN (src->end));
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src->succ->flags |= EDGE_FALLTHRU;
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}
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dest->index = old_index;
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}
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@ -868,6 +947,8 @@ cfg_layout_initialize ()
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around the code. */
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alloc_aux_for_blocks (sizeof (struct reorder_block_def));
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cleanup_unconditional_jumps ();
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scope_to_insns_initialize ();
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record_effective_endpoints ();
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@ -7640,6 +7640,56 @@
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operands[3] = gen_rtx_AND (mode, operands[0], gen_int_mode (mask, mode));
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})
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;; Convert HImode/SImode test instructions with immediate to QImode ones.
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;; i386 does not allow to encode test with 8bit sign extended immediate, so
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;; this is relatively important trick.
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;; Do the converison only post-reload to avoid limiting of the register class
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;; to QI regs.
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(define_split
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[(set (reg 17)
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(compare
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(and (match_operand 0 "register_operand" "")
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(match_operand 1 "const_int_operand" ""))
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(const_int 0)))]
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"(!TARGET_PROMOTE_QImode || optimize_size)
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&& reload_completed
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&& QI_REG_P (operands[0])
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&& ((ix86_match_ccmode (insn, CCZmode)
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&& !(INTVAL (operands[1]) & ~(255 << 8)))
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|| (ix86_match_ccmode (insn, CCNOmode)
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&& !(INTVAL (operands[1]) & ~(127 << 8))))
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&& GET_MODE (operands[0]) != QImode"
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[(set (reg:CCNO 17)
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(compare:CCNO
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(and:SI (zero_extract:SI (match_dup 0) (const_int 8) (const_int 8))
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(match_dup 1))
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(const_int 0)))]
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"operands[0] = gen_lowpart (SImode, operands[0]);
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operands[1] = gen_int_mode (INTVAL (operands[1]) >> 8, QImode);")
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(define_split
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[(set (reg 17)
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(compare
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(and (match_operand 0 "nonimmediate_operand" "")
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(match_operand 1 "const_int_operand" ""))
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(const_int 0)))]
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"(!TARGET_PROMOTE_QImode || optimize_size)
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&& reload_completed
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&& (!REG_P (operands[0]) || ANY_QI_REG_P (operands[0]))
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&& ((ix86_match_ccmode (insn, CCZmode)
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&& !(INTVAL (operands[1]) & ~255))
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|| (ix86_match_ccmode (insn, CCNOmode)
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&& !(INTVAL (operands[1]) & ~127)))
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&& GET_MODE (operands[0]) != QImode"
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[(set (reg:CCNO 17)
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(compare:CCNO
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(and:QI (match_dup 0)
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(match_dup 1))
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(const_int 0)))]
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"operands[0] = gen_lowpart (QImode, operands[0]);
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operands[1] = gen_lowpart (QImode, operands[1]);")
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;; %%% This used to optimize known byte-wide and operations to memory,
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;; and sometimes to QImode registers. If this is considered useful,
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;; it should be done with splitters.
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@ -16494,7 +16544,8 @@
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(const_int 0)))]
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"ix86_match_ccmode (insn, CCNOmode)
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&& (true_regnum (operands[0]) != 0
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|| CONST_OK_FOR_LETTER_P (INTVAL (operands[1]), 'K'))
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|| (GET_CODE (operands[1]) == CONST_INT
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&& CONST_OK_FOR_LETTER_P (INTVAL (operands[1]), 'K')))
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&& find_regno_note (insn, REG_DEAD, true_regnum (operands[0]))"
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[(parallel
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[(set (reg:CCNO 17)
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|
|
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|||
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