gcc/ChangeLog

   1 Sun Aug 24 17:22:21 1997  Jim Wilson  <wilson@cygnus.com>
   2
   3         * Makefile.in (install-info): Don't cd into srcdir.  Add srcdir to
   4         filenames.  Use sed to extract base filename for install.
   5
   6 Sat Aug 23 18:19:40 1997  John F. Carr  <jfc@mit.edu>
   7
   8         * unroll.c (find_splittable_givs): Only share if two givs have the
   9         same add and multiply values.
  10
  11 Sat Aug 23 14:36:27 1997  Jim Wilson  <wilson@cygnus.com>
  12
  13         * m68k/next.h (GO_IF_INDEXABLE_BASE): Fix typo in undef.
  14         * m68k/m68kemb.h (LIB_SPEC): Add missing comment end before it.
  15
  16 Sat Aug 23 00:18:22 1997  Jeffrey A Law  (law@cygnus.com)
  17
  18         * pa.c (pa_reorg): Always put begin_brtab and end_brtab insns
  19         around branch tables.
  20         * pa.md (begin_brtab, end_brtab): Only emit the .begin_brtab
  21         and .end_brtab directives if TARGET_GAS.
  22
  23 Fri Aug 22 14:05:55 1997  Jim Wilson  <wilson@cygnus.com>
  24
  25         * alias.c (true_dependence): Pass x_addr not x to varies.
  26
  27         * acconfig.h (NEED_DECLARATION_CALLOC): Add.
  28         * configure.in: Add GCC_NEED_DECLARATION call for calloc.
  29         * rs6000/xm-rs6000.h (malloc, realloc, calloc, free): Delete
  30         declarations.
  31         * config.in, configure: Regenerate.
  32
  33 Thu Aug 21 23:52:16 1997  John F. Carr  <jfc@mit.edu>
  34
  35         * alias.c (find_base_value): Improve handling of PLUS, MINUS, and
  36         LO_SUM.
  37         (record_set): Handle LO_SUM like PLUS.
  38         (init_alias_analysis): When following chains of base addresses,
  39         do not stop on reaching a hard register.
  40
  41 Thu Aug 21 20:17:37 1997  Jeffrey A Law  (law@cygnus.com)
  42
  43         * version.c: Bump for new snapshot.
  44
  45 Thu Aug 21 17:28:00 1997  Jim Wilson  <wilson@cygnus.com>
  46
  47         * alpha.h (ARCH_ASM_FILE_START): Define.
  48         (ASM_FILE_START): Use ARCH_ASM_FILE_START.
  49         * osf12.h, osf2or3.h (ARCH_ASM_FILE_START): Redefine to null string.
  50
  51 Thu Aug 21 10:22:19 1997  Jeffrey A Law  (law@cygnus.com)
  52
  53         * Makefile.in (install-common): Put gcov comment at start of line.
  54
  55 Wed Aug 20 22:47:33 1997  Jeffrey A Law  (law@cygnus.com)
  56
  57         * alias.c (init_alias_analysis): When simplifying the reg_base_value
  58         array, simplify entries for hard registers too.
  59
  60 Wed Aug 20 12:35:47 1997  Dave Love  <d.love@dl.ac.uk>
  61
  62         * dwarf2.h (enum dwarf_call_frame_info): Remove trailing comma from
  63         list.
  64
  65 Wed Aug 20 11:58:33 1997  Jim Wilson  <wilson@cygnus.com>
  66
  67         * stmt.c (start_cleanup_deferal, end_cleanup_deferal): Test
  68         block_stack before dereferencing it.
  69
  70 Wed Aug 20 11:57:11 1997  Michael Meissner  <meissner@cygnus.com>
  71
  72         * rs6000.h (ISSUE_RATE): Define instead of MACHINE_issue_rate.
  73
  74 Tue Aug 19 17:10:56 1997  Jason Merrill  <jason@yorick.cygnus.com>
  75
  76         * cplus-dem.c: Add 'extern' to prepends_underscore.
  77
  78 Tue Aug 19 09:34:57 1997  Jeffrey A Law  (law@cygnus.com)
  79
  80         * haifa-sched.c (ISSUE_RATE): Renamed from MACHINE_issue_rate.
  81         (get_issue_rate): Delete.
  82         * pa.h (ISSUE_RATE): Define.
  83
  84         * configure.in: Turn on haifa by default for the PA.
  85         * configure: Rebuilt.
  86         * pa.c (override_options): Accept -mschedule=7200 option.
  87         (pa_adjust_cost): No longer need to scale costs for newer
  88         processors.
  89         * pa.h (enum processor_type): Add PROCESSOR_7200.
  90         * pa.md: Revamp scheduling parameters to work better with
  91         haifa.  Add scheduling parameters for the 7200.
  92
  93         * haifa-sched.c (move_insn): Reemit notes for SCHED_GROUP_P
  94         insns too.
  95         (schedule_block): When adjusting basic_block_{head,end}, account
  96         for movement of SCHED_GROUP_P insns too.
  97
  98         * haifa-sched.c (debug_dependencies): Fix thinko.
  99
 100         * Makefile.in (EXPECT, RUNTEST, RUNTESTFLAGS): Define.
 101         (site.exp, check, check-g++, check-gcc): New targets.
 102
 103         * haifa-sched.c: Make lots of variables static.
 104
 105 Tue Aug 19 07:18:34 1997  H.J. Lu  (hjl@gnu.ai.mit.edu)
 106
 107         * expr.h, real.h: Finish prototyping.
 108
 109 Mon Aug 18 21:49:02 1997  Jim Wilson  <wilson@cygnus.com>
 110
 111         * reload.c (find_reloads): Add code to convert RELOAD_FOR_OPADDR_ADDR
 112         reloads to RELOAD_FOR_OPERAND_ADDRESS reloads.
 113         * reload1.c: Undo bugfix from Aug 11.
 114
 115 Mon Aug 18 17:39:02 1997  Mike Meissner  <meissner@cygnus.com>
 116
 117         * configure.in ({powerpc,rs6000}*-*-*, --with-cpu): Remove single
 118         quotes around the name.
 119         * configure: Regenerate.
 120
 121 Mon Aug 18 13:46:47 1997  Jim Wilson  <wilson@cygnus.com>
 122
 123         * Makefile.in (stmp-multilib-sub): Fix typo in last change.
 124
 125 Thu Aug  7 10:33:13 1997  Manfred Hollstein  <manfred@s-direktnet.de>
 126
 127         * Makefile.in (sub-makes): Pass the current value of LANGUAGES down
 128         to sub-makes to avoid building more passes than the user might have
 129         requested on the command line.
 130
 131 Sun Aug 17 15:42:17 1997  Dave Love  (d.love@dl.ac.uk)
 132
 133         * configure.in: Expurgate `broken_install' (install is
 134         autoconfed).
 135
 136         * configure.lang: Substitute autoconfed ${INSTALL} (not currently
 137         relevant).
 138
 139 Sat Aug 16 01:08:12 1997  Jeffrey A Law  (law@cygnus.com)
 140
 141         * loop.c (is_power_of_2, is_conditional_branch): Delete unused
 142         functions and declarations.
 143         (analyze_loop_iterations): Use condjump_p.
 144         (insert_bct): Likewise.  Use exact_log2.
 145
 146 Fri Aug 15 23:48:32 1997  Jeffrey A Law  (law@cygnus.com)
 147
 148         * haifa-sched.c (find_post_sched_live): Call FREE_REG_SET as needed.
 149         (schedule_region): Likewise.
 150         (schedule_insns): Likewise.
 151
 152         * PROJECTS: Update with Haifa stuff.
 153
 154 Fri Aug 15 12:49:56 1997  Jeffrey A Law  (law@cygnus.com)
 155
 156         * version.c: Change the version string to look like:
 157         egcs-2.90.00 970814 (gcc2-970802 experimental).
 158
 159         * loop.c (is_conditional_branch): Make definition match declaration.
 160
 161         * gcc.c: Take out experimental snapshot warning message.
 162
 163 Fri Aug 15 13:43:39 1997  Michael Meissner  <meissner@cygnus.com>
 164
 165         * haifa-sched.c (debug_dependencies): Use GET_NOTE_INSN_NAME to
 166         print out the names of the notes.  Print out the name of the insn
 167         that is not a note, and not an {,CALL_,JUMP_}INSN.
 168
 169 Wed Aug 13 01:03:37 1997  Doug Evans  <dje@canuck.cygnus.com>
 170
 171         * configure.in (haifa configury): Fix typo.
 172         * configure: Regenerate.
 173
 174 Tue Aug 12 10:20:36 1997  Jeffrey A Law  (law@cygnus.com)
 175
 176         * version.c: Bump version to "gcc-3.0.0 970802 experimental".
 177
 178         * gcc.info*: Rebuilt.
 179
 180         * COPYING.g77, README.g77: New files.
 181         * real.c (ereal_unto_float, ereal_unto_double): New functions.
 182         * real.h (ereal_unto_float, ereal_unto_double): Declare them.
 183         (REAL_VALUE_UNTO_TARGET_DOUBLE, REAL_VALUE_UNTO_TARGET_SINGLE): Define.
 184
 185 Mon Aug 11 14:50:55 1997  Jeffrey A Law  (law@cygnus.com)
 186
 187         * Integrate Haifa instruction scheduler.
 188         * Makefile.in (ALL_CFLAGS): Add SCHED_CFLAGS.  Prefix all references
 189         to sched with $(SCHED_CFLAGS.
 190         * configure.in: Handle --enable-haifa.
 191         * configure: Rebuilt.
 192         * flags.h: Add new flags for haifa instruction scheduler.
 193         * genattrtab.c (expand_units): For haifa, don't subtract one
 194         when computing blockage.
 195         * toplev.h (flag_schedule_interblock): Haifa scheduler flag.
 196         (flag_schedule_speculative): Ditto.
 197         (flag_schedule_speculative_load): Ditto.
 198         (flag_schedule_speculative_load_dangerous): Ditto.
 199         (flag_schedule_reverse_before_reload): Ditto.
 200         (flag_schedule_reverse_after_reload): Ditto.
 201         (flag_branch_on_count_reg): Ditto.
 202         (f_options): Add Haifa switches.
 203         (main): Turn off some Haifa options if appropriate macro is
 204         defined.  Process Haifa switches.
 205         * unroll.c (iteration_info): No longer static, since Haifa
 206         scheduler uses it.
 207         (unroll_loop): Inform HAIFA scheduler about loop unrolling factor.
 208         * unroll.c (unroll_loop): Set loop_unroll_iter, loop_start_value.
 209         * loop.h (loop_unroll_factor, loop_number): Add HAIFA decls.
 210         * loop.h (loop_initial_value,loop_unroll_iter): New globals.
 211         * loop.c (loop_optimize): If HAIFA is defined, allocate additional
 212         storage for the Haifa scheduler.
 213         (mark_loop_jump): If HAIFA defined, set LABEL_OUTSIDE_LOOP_P and
 214         LABEL_NEXTREF.
 215         (strength_reduce): If HAIFA and HAVE_decrement_and_branch_on_count
 216         are defined, call analyze_loop_iterations and insert_bct to use
 217         countdown loops.
 218         (record_giv): Refine test for jumps out of loops if HAIFA is
 219         defined.
 220         (analyze_loop_iterations): New function to identify if we can use
 221         a countdown loop.
 222         (insert_bct): Insert countdown loop.
 223         (instrument_loop_bct): Low level code to insert countdown loop.
 224         (loop_number): Calculate UID of loop.
 225         (indirect_jump_in_function_p): Return true if an indirect jump is
 226         in the function.
 227         (is_power_of_2): Return true if value is a power of 2.
 228         (is_conditional_branch): Return true if insn is a conditional
 229         jump.
 230         (fix_bct_param): Process -fbct-{min,max}-N switches.
 231         (check_bct_param): Return true if loop should be instrumented.
 232         * loop.c (loop_initial_value,loop_unroll_iter): New globals.
 233         (loop_optimize): Initialize.
 234         (get_condition_for_loop): Ditto.
 235         * loop.c (strength_reduce): Inside of code that uses #ifdef
 236         HAVE_decrement_and_branch_on_count code, test it to make sure the
 237         condition is true.
 238         (instrument_loop_bct): Ditto.
 239         * haifa-sched.c: New file.
 240
 241
 242         * Integrate regmove pass.
 243         * Makefile.in (OBJS): Add regmove.o
 244         (regmove.o): Add dependencies.
 245         * flow.c (find_use_as_address): No longer static.
 246         * rtl.h (find_use_as_address): Declare.
 247         * toplev.c (regmove_dump, flag_regmove): Define.
 248         (f_options): Add -fregmove.
 249         (regmove_dump_file, regmove_time): Define.
 250         (fatal_insn): Close the regmove dump file.
 251         (compile_file): Initialize regmove_time; open/close the regmove dump
 252         file as needed.  Print regmove time as needed.
 253         (rest_of_compilation): Run regmove pass if requested, dump
 254         RTL after regmove if requested.
 255         (main): If -O2 or more, turn on regmove.  Handle dump switches.
 256         * regmove.c: New file.
 257
 258 Mon Aug 11 14:15:02 1997  Jeffrey A Law  (law@cygnus.com)
 259
 260         * Integrate tlink patch from jason@cygnus.com
 261         * gcc.c (SWITCH_TAKES_ARG): Add 'V', 'B' and 'b'.
 262         (process_command): Increment n_switches for them.  Don't discard
 263         their args.  Validate them.
 264         (main): Escape " marks when creating COLLECT_GCC_OPTIONS.
 265         From Rohan Lenard.
 266         (process_command): Set include_prefixes from COMPILER_PATH.
 267         (main): Set COLLECT_GCC_OPTIONS sooner.
 268         * confiugre.in: Link ../ld/ld.new to collect-ld rather than real-ld.
 269         * tlink.c, hash.c, hash.h: New files.
 270         * Makefile.in (USE_COLLECT2): Always use collect2.
 271         (collect2): Depend on and link in hash.o and tlink.o.
 272         (tlink.o, hash.o): Add dependencies.
 273
 274 Mon Aug 11 10:04:49 1997  Jeffrey A Law  (law@cygnus.com)
 275
 276         * Integrate alias analysis changes from jfc@mit.edu
 277         * Makefile.in (OBJS): Add alias.o
 278         (alias.o): Add dependencies.
 279         * alias.c: New file.
 280         * sched.c: Remove alias analysis code.  It lives in alias.c now.
 281         (sched_analyze_2): Add new arguments to true_dependence.
 282         (schedule_insns): Always call init_alias_analysis.
 283         * calls.c (expand_call): Note calls to malloc, calloc, and realloc;
 284         mark return value from such functions as a pointer and keep track of
 285         them for alias analysis.  If a return value from a function is a
 286         pointer, mark it as such.
 287         * combine.c (distribute_notes): Handle REG_NOALIAS.
 288         * cse.c (struct write_data): Delete.  No longer needed.
 289         (invalidate): Don't call set_nonvarying_address_components anymore.
 290         Use true_dependence to decide if an entry should be removed from
 291         the hash table.
 292         (invalidate_memory): Remove WRITES argument, simplify appropriately.
 293         Fix all callers.
 294         (note_mem_written): Similarly for WRITE_PTR argument.
 295         (invalidate_from_clobbers): Similarly for W argument.
 296         (invalidate_for_call): Remove memory elements from the hash table.
 297         (refers_to_mem_p, cse_rtx_addr_varies_p): Deleted.
 298         (cse_rtx_varies_p): New function.  Derived from old
 299         cse_rtx_addr_varies_p.
 300         (cse_insn): Remove WRITES_MEMORY and INIT variables and all references.
 301         Don't call note_mem_written anymore.  Stack pushes invalidate the stack
 302         pointer if PUSH_ROUNDING is defined.  No longer need to call
 303         cse_rtx_addr_varies_p to decide if a MEM should be invalidated.
 304         (skipped_writes_memory): Remove variable.
 305         (invalidate_skipped_set): Simplify and wewrite to use invalidate_memory.
 306         (invalidate_skipped_block): Simplify for new alias analysis code.
 307         (cse_set_around_loop): Likewise.
 308         (cse_main): Call init_alias_analysis.
 309         * flags.h (flag_alias_check, flag_argument_noalias): Declare.
 310         * toplev.c (flag_alias_check, flag_argument_noalias): Define.
 311         (f_options): Add new alias checking arguments.
 312         (main): Set flag_alias_check when optimizing.
 313         * local_alloc (validate_equiv_mem_from_store): Add new arguments
 314         to true_dependence.
 315         (memref_referenced_p): Likewise.
 316         * loop.c (NUM_STORES): Increase to 30.
 317         (prescan_loop): Only non-constant calls set unknown_address_altered.
 318         (invariant_p): Add new arguments to true_dependence.
 319         (record_giv): Initialize unrolled and shared fields.
 320         (emit_iv_add_mult): Call record_base_value as needed.
 321         * loop.h (struct induction): Add unrolled and shared fields.
 322         * unroll.c  (unroll_loop): Call record_base_value as needed.
 323         (copy_loop_body): Likewise.
 324         (final_biv_value): Likewise.
 325         (final_giv_value): Likewise.
 326         (find_splittable_regs): Likewise.  Only create one new pseudo
 327         if we have multiple address GIVs that were combined with the same
 328         dst_reg GIV.  Note when a new register is created due to unrolling.
 329         * rtl.c (reg_note_name): Add REG_NOALIAS.
 330         * rtl.h (enum reg_note): Similarly.
 331         (rtx_varies_p, may_trap_p, side_effects_p): Declare.
 332         (volatile_refs_p, volatile_insn_p, remove_note): Likewise.
 333         (note_stores, refers_to_regno_p, reg_overlap_mentioned_p): Likewise.
 334         (true_dependence, read_dependence, anti_dependence): Likewise.
 335         (output_dependence, init_alias_analysis, end_alias_analysis): Likewise.
 336         (mark_user_reg, mark_reg_pointer): Likewise.
 337
 338
 339         * Integrate reload bugfix from Wilon which enables the PA port
 340         to bootstrap again.
 341         * reload1.c (reload): Sum needs for both OPADDR_ADDR and and
 342         OPERAND_ADDRESS when computing how many registers an insn needs.
 343         (reload_reg_free_p): OPADDR_ADDR and OPERAND_ADDRESS reloads do
 344         conflict.
 345         (reload_reg_free_before_p): Treat OPERAND_ADDRESS reloads just like
 346         OPADDR_ADDR reload.
 347         (reload_reg_reaches_end_p): For RELOAD_FOR_OPADDR_ADDR insns, registers
 348         in reload_reg_use_in_op_addr do not reach the end.
 349         do not reach the end.
 350         (reloads_conflict): RELOAD_FOR_OPADDR_ADDR conflicts with
 351         RELOAD_FOR_OPERAND_ADDRESS.
 352
 353 Sun Aug 10 12:00:20 1997  Jeffrey A Law  (law@cygnus.com)
 354
 355         * egcs project officially starts.
 356