diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 5248ce15104..d7389f9dcbf 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,38 @@ +2004-05-25 Ayal Zaks + Mostafa Hagog + + * Makefile.in (modulo-sched.o, ddg.o): New. + * ddg.h, ddg.c, modulo-sched.c: New files. + * cfglayout.c (duplicate_insn_chain): Remove "static" and push + internals to "dupicate_insn". + (duplicate_insn): New function. + * cfglayout.h (duplicate_insn_chain, duplicate_insn): New + declarations. + * common.opt (fmodulo-sched): New flag. + * df.c (df_bb_regno_last_use_find, df_bb_regno_first_def_find): + Remove static and forward declaration. + (df_find_def, df_reg_used, df_bb_regno_last_def_find): New + functions. + * df.h (df_bb_regno_last_use_find, df_bb_regno_first_def_find, + df_bb_regno_last_def_find, df_find_def, df_reg_used): New + declarations. + * flags.h (flag_modulo_sched): New flag. + * opts.c (common_handle_option): Handle modulo-sched flag. + * params.def (max-sms-loop-number, sms-max-ii-factor, + sms-dfa-history, sms-loop-average-count-threshold): New + parameters. + * params.h (MAX_SMS_LOOP_NUMBER, SMS_MAX_II_FACTOR, + SMS_DFA_HISTORY, SMS_LOOP_AVERAGE_COUNT_THRESHOLD): New + parameters. + * passes.c ("sms", "sms-vcg"): New dumps. + (rest_of_handle_sched): Call sms_schedule. + * rtl.h (sms_schedule): New declaration. + * timevar.def (TV_SMS): New. + * toplev.c (flag_modulo_sched): Initialize. + (f_options): Handle -fmodulo-sched option. + * docs/invoke.texi: Document -fmodulo-sched & -dm options. + * docs/passes.texi: Document new SMS pass. + 2004-05-25 Paolo Bonzini * Makefile.in (OBJS): Add rtlhooks.o. diff --git a/gcc/Makefile.in b/gcc/Makefile.in index 568b263a191..bd6afbe1654 100644 --- a/gcc/Makefile.in +++ b/gcc/Makefile.in @@ -884,14 +884,16 @@ OBJS-common = \ cfg.o cfganal.o cfgbuild.o cfgcleanup.o cfglayout.o cfgloop.o \ cfgloopanal.o cfgloopmanip.o loop-init.o loop-unswitch.o loop-unroll.o \ cfgrtl.o combine.o conflict.o convert.o coverage.o cse.o cselib.o \ - dbxout.o debug.o df.o diagnostic.o dojump.o dominance.o loop-doloop.o \ + dbxout.o ddg.o \ + debug.o df.o diagnostic.o dojump.o dominance.o loop-doloop.o \ dwarf2asm.o dwarf2out.o emit-rtl.o except.o explow.o loop-iv.o \ expmed.o expr.o final.o flow.o fold-const.o function.o gcse.o \ genrtl.o ggc-common.o global.o graph.o gtype-desc.o \ haifa-sched.o hooks.o ifcvt.o insn-attrtab.o insn-emit.o insn-modes.o \ insn-extract.o insn-opinit.o insn-output.o insn-peep.o insn-recog.o \ integrate.o intl.o jump.o langhooks.o lcm.o lists.o local-alloc.o \ - loop.o optabs.o options.o opts.o params.o postreload.o predict.o \ + loop.o modulo-sched.o \ + optabs.o options.o opts.o params.o postreload.o predict.o \ print-rtl.o print-tree.o value-prof.o var-tracking.o \ profile.o ra.o ra-build.o ra-colorize.o ra-debug.o ra-rewrite.o \ real.o recog.o reg-stack.o regclass.o regmove.o regrename.o \ @@ -1997,6 +1999,15 @@ alias.o : alias.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) $(RTL_H) flags.h \ regmove.o : regmove.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) $(RTL_H) insn-config.h \ $(RECOG_H) output.h $(REGS_H) hard-reg-set.h flags.h function.h \ $(EXPR_H) $(BASIC_BLOCK_H) toplev.h $(TM_P_H) except.h reload.h +ddg.o : ddg.c ddg.h $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TARGET_H) \ + toplev.h $(RTL_H) $(TM_P_H) $(BASIC_BLOCK_H) regs.h function.h flags.h \ + insn-config.h insn-attr.h except.h $(RECOG_H) sched-int.h \ + cfglayout.h cfgloop.h $(EXPR_H) +modulo-sched.o : modulo-sched.c ddg.h cfgloop.h $(CONFIG_H) \ + $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TARGET_H) \ + toplev.h $(RTL_H) $(TM_P_H) $(BASIC_BLOCK_H) regs.h function.h flags.h \ + insn-config.h insn-attr.h except.h $(RECOG_H) sched-int.h \ + cfglayout.h cfgloop.h $(EXPR_H) params.h $(COVERAGE_H) haifa-sched.o : haifa-sched.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) $(RTL_H) \ sched-int.h $(BASIC_BLOCK_H) $(REGS_H) hard-reg-set.h flags.h insn-config.h function.h \ $(INSN_ATTR_H) toplev.h $(RECOG_H) except.h $(TM_P_H) $(TARGET_H) diff --git a/gcc/cfglayout.c b/gcc/cfglayout.c index 8a57c68c2b2..899aa1a5665 100644 --- a/gcc/cfglayout.c +++ b/gcc/cfglayout.c @@ -54,7 +54,6 @@ static void change_scope (rtx, tree, tree); void verify_insn_chain (void); static void fixup_fallthru_exit_predecessor (void); -static rtx duplicate_insn_chain (rtx, rtx); static tree insn_scope (rtx); static void update_unlikely_executed_notes (basic_block); @@ -973,7 +972,7 @@ cfg_layout_can_duplicate_bb_p (basic_block bb) return true; } -static rtx +rtx duplicate_insn_chain (rtx from, rtx to) { rtx insn, last; diff --git a/gcc/cfglayout.h b/gcc/cfglayout.h index b074f642633..c50072f50bc 100644 --- a/gcc/cfglayout.h +++ b/gcc/cfglayout.h @@ -28,3 +28,4 @@ extern bool can_copy_bbs_p (basic_block *, unsigned); extern void copy_bbs (basic_block *, unsigned, basic_block *, edge *, unsigned, edge *, struct loop *); extern bool scan_ahead_for_unlikely_executed_note (rtx); +extern rtx duplicate_insn_chain (rtx, rtx); diff --git a/gcc/common.opt b/gcc/common.opt index 17c407e7707..a89b2be3785 100644 --- a/gcc/common.opt +++ b/gcc/common.opt @@ -466,6 +466,10 @@ fmessage-length= Common RejectNegative Joined UInteger -fmessage-length= Limit diagnostics to characters per line. 0 suppresses line-wrapping +fmodulo-sched +Common +Perform SMS based modulo scheduling before the first scheduling pass + fmove-all-movables Common Force all loop invariant computations out of loops diff --git a/gcc/df.c b/gcc/df.c index 79dfa099830..db3cf2130e8 100644 --- a/gcc/df.c +++ b/gcc/df.c @@ -270,10 +270,6 @@ void df_refs_reg_replace (struct df *, bitmap, struct df_link *, rtx, rtx); static int df_def_dominates_all_uses_p (struct df *, struct ref *def); static int df_def_dominates_uses_p (struct df *, struct ref *def, bitmap); -static struct ref *df_bb_regno_last_use_find (struct df *, basic_block, - unsigned int); -static struct ref *df_bb_regno_first_def_find (struct df *, basic_block, - unsigned int); static struct ref *df_bb_insn_regno_last_use_find (struct df *, basic_block, rtx, unsigned int); static struct ref *df_bb_insn_regno_first_def_find (struct df *, basic_block, @@ -2688,6 +2684,34 @@ df_insn_regno_def_p (struct df *df, basic_block bb ATTRIBUTE_UNUSED, return 0; } +/* Finds the reference corresponding to the definition of REG in INSN. + DF is the dataflow object. */ + +struct ref * +df_find_def (struct df *df, rtx insn, rtx reg) +{ + struct df_link *defs; + + for (defs = DF_INSN_DEFS (df, insn); defs; defs = defs->next) + if (rtx_equal_p (DF_REF_REG (defs->ref), reg)) + return defs->ref; + + return NULL; +} + +/* Return 1 if REG is referenced in INSN, zero otherwise. */ + +int +df_reg_used (struct df *df, rtx insn, rtx reg) +{ + struct df_link *uses; + + for (uses = DF_INSN_USES (df, insn); uses; uses = uses->next) + if (rtx_equal_p (DF_REF_REG (uses->ref), reg)) + return 1; + + return 0; +} static int df_def_dominates_all_uses_p (struct df *df ATTRIBUTE_UNUSED, struct ref *def) @@ -2884,7 +2908,7 @@ df_bb_regs_lives_compare (struct df *df, basic_block bb, rtx reg1, rtx reg2) /* Return last use of REGNO within BB. */ -static struct ref * +struct ref * df_bb_regno_last_use_find (struct df *df, basic_block bb, unsigned int regno) { struct df_link *link; @@ -2905,7 +2929,7 @@ df_bb_regno_last_use_find (struct df *df, basic_block bb, unsigned int regno) /* Return first def of REGNO within BB. */ -static struct ref * +struct ref * df_bb_regno_first_def_find (struct df *df, basic_block bb, unsigned int regno) { struct df_link *link; @@ -2924,6 +2948,31 @@ df_bb_regno_first_def_find (struct df *df, basic_block bb, unsigned int regno) return 0; } +/* Return last def of REGNO within BB. */ +struct ref * +df_bb_regno_last_def_find (struct df *df, basic_block bb, unsigned int regno) +{ + struct df_link *link; + struct ref *last_def = NULL; + int in_bb = 0; + + /* This assumes that the reg-def list is ordered such that for any + BB, the first def is found first. However, since the BBs are not + ordered, the first def in the chain is not necessarily the first + def in the function. */ + for (link = df->regs[regno].defs; link; link = link->next) + { + struct ref *def = link->ref; + /* The first time in the desired block. */ + if (DF_REF_BB (def) == bb) + in_bb = 1; + /* The last def in the desired block. */ + else if (in_bb) + return last_def; + last_def = def; + } + return last_def; +} /* Return first use of REGNO inside INSN within BB. */ static struct ref * diff --git a/gcc/df.h b/gcc/df.h index 16a448e2b43..62ee1e28d0c 100644 --- a/gcc/df.h +++ b/gcc/df.h @@ -291,6 +291,15 @@ extern int df_bb_regs_lives_compare (struct df *, basic_block, rtx, rtx); extern rtx df_bb_single_def_use_insn_find (struct df *, basic_block, rtx, rtx); +extern struct ref *df_bb_regno_last_use_find (struct df *, basic_block, unsigned int); + +extern struct ref *df_bb_regno_first_def_find (struct df *, basic_block, unsigned int); + +extern struct ref *df_bb_regno_last_def_find (struct df *, basic_block, unsigned int); + +extern struct ref *df_find_def (struct df *, rtx, rtx); + +extern int df_reg_used (struct df *, rtx, rtx); /* Functions for debugging from GDB. */ diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index b2ae83c6f5d..fffb023e2a3 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -289,7 +289,7 @@ in the following sections. -floop-optimize -fcrossjumping -fif-conversion -fif-conversion2 @gol -finline-functions -finline-limit=@var{n} -fkeep-inline-functions @gol -fkeep-static-consts -fmerge-constants -fmerge-all-constants @gol --fmove-all-movables -fnew-ra -fno-branch-count-reg @gol +-fmodulo-sched -fmove-all-movables -fnew-ra -fno-branch-count-reg @gol -fno-default-inline -fno-defer-pop @gol -fno-function-cse -fno-guess-branch-probability @gol -fno-inline -fno-math-errno -fno-peephole -fno-peephole2 @gol @@ -3278,7 +3278,7 @@ Annotate the assembler output with miscellaneous debugging information. Dump after computing branch probabilities, to @file{@var{file}.12.bp}. @item B @opindex dB -Dump after block reordering, to @file{@var{file}.31.bbro}. +Dump after block reordering, to @file{@var{file}.32.bbro}. @item c @opindex dc Dump after instruction combination, to the file @file{@var{file}.20.combine}. @@ -3288,15 +3288,15 @@ Dump after the first if conversion, to the file @file{@var{file}.14.ce1}. Also dump after the second if conversion, to the file @file{@var{file}.21.ce2}. @item d @opindex dd -Dump after branch target load optimization, to to @file{@var{file}.32.btl}. -Also dump after delayed branch scheduling, to @file{@var{file}.36.dbr}. +Dump after branch target load optimization, to to @file{@var{file}.33.btl}. +Also dump after delayed branch scheduling, to @file{@var{file}.37.dbr}. @item D @opindex dD Dump all macro definitions, at the end of preprocessing, in addition to normal output. @item E @opindex dE -Dump after the third if conversion, to @file{@var{file}.30.ce3}. +Dump after the third if conversion, to @file{@var{file}.31.ce3}. @item f @opindex df Dump after control and data flow analysis, to @file{@var{file}.11.cfg}. @@ -3306,7 +3306,7 @@ Also dump after life analysis, to @file{@var{file}.19.life}. Dump after purging @code{ADDRESSOF} codes, to @file{@var{file}.07.addressof}. @item g @opindex dg -Dump after global register allocation, to @file{@var{file}.25.greg}. +Dump after global register allocation, to @file{@var{file}.26.greg}. @item G @opindex dG Dump after GCSE, to @file{@var{file}.08.gcse}. @@ -3323,40 +3323,43 @@ Dump after sibling call optimizations, to @file{@var{file}.02.sibling}. Dump after the first jump optimization, to @file{@var{file}.04.jump}. @item k @opindex dk -Dump after conversion from registers to stack, to @file{@var{file}.34.stack}. +Dump after conversion from registers to stack, to @file{@var{file}.35.stack}. @item l @opindex dl -Dump after local register allocation, to @file{@var{file}.24.lreg}. +Dump after local register allocation, to @file{@var{file}.25.lreg}. @item L @opindex dL Dump after loop optimization passes, to @file{@var{file}.09.loop} and @file{@var{file}.16.loop2}. +@item m +@opindex dm +Dump after modulo scheduling, to @file{@var{file}.23.sms}. @item M @opindex dM Dump after performing the machine dependent reorganization pass, to -@file{@var{file}.35.mach}. +@file{@var{file}.36.mach}. @item n @opindex dn -Dump after register renumbering, to @file{@var{file}.29.rnreg}. +Dump after register renumbering, to @file{@var{file}.30.rnreg}. @item N @opindex dN Dump after the register move pass, to @file{@var{file}.22.regmove}. @item o @opindex do -Dump after post-reload optimizations, to @file{@var{file}.26.postreload}. +Dump after post-reload optimizations, to @file{@var{file}.27.postreload}. @item r @opindex dr Dump after RTL generation, to @file{@var{file}.01.rtl}. @item R @opindex dR -Dump after the second scheduling pass, to @file{@var{file}.33.sched2}. +Dump after the second scheduling pass, to @file{@var{file}.34.sched2}. @item s @opindex ds Dump after CSE (including the jump optimization that sometimes follows CSE), to @file{@var{file}.06.cse}. @item S @opindex dS -Dump after the first scheduling pass, to @file{@var{file}.23.sched}. +Dump after the first scheduling pass, to @file{@var{file}.24.sched}. @item t @opindex dt Dump after the second CSE pass (including the jump optimization that @@ -3376,10 +3379,10 @@ Dump after the value profile transformations, to @file{@var{file}.13.vpt}. Also dump after variable tracking, to @file{@var{file}.35.vartrack}. @item w @opindex dw -Dump after the second flow pass, to @file{@var{file}.27.flow2}. +Dump after the second flow pass, to @file{@var{file}.28.flow2}. @item z @opindex dz -Dump after the peephole pass, to @file{@var{file}.28.peephole2}. +Dump after the peephole pass, to @file{@var{file}.29.peephole2}. @item Z @opindex dZ Dump after constructing the web, to @file{@var{file}.17.web}. @@ -4004,6 +4007,12 @@ types. Languages like C or C++ require each non-automatic variable to have distinct location, so using this option will result in non-conforming behavior. +@item -fmodulo-sched +@opindex fmodulo-sched +Perform swing modulo scheduling immediately before the first scheduling +pass. This pass looks at innermost loops and reorders their +instructions by overlapping different iterations. + @item -fnew-ra @opindex fnew-ra Use a graph coloring register allocator. Currently this option is meant diff --git a/gcc/doc/passes.texi b/gcc/doc/passes.texi index b5a69d88633..767ec138a13 100644 --- a/gcc/doc/passes.texi +++ b/gcc/doc/passes.texi @@ -580,6 +580,15 @@ specific ``mode'' and minimizes the number of mode changes required to satisfy all users. What these modes are, and what they apply to are completely target-specific. The source is located in @file{lcm.c}. +@cindex modulo scheduling +@cindex sms, swing, software pipelining +@item Modulo scheduling + +This pass looks at innermost loops and reorders their instructions +by overlapping different iterations. Modulo scheduling is performed +immediately before instruction scheduling. +The pass is located in (@file{modulo-sched.c}). + @item Instruction scheduling This pass looks for instructions whose output will not be available by diff --git a/gcc/flags.h b/gcc/flags.h index 6f8f5f67ea3..4de7696a59e 100644 --- a/gcc/flags.h +++ b/gcc/flags.h @@ -424,6 +424,9 @@ extern int flag_gen_aux_info; extern int flag_shared_data; +/* Controls the activiation of SMS modulo scheduling. */ +extern int flag_modulo_sched; + /* flag_schedule_insns means schedule insns within basic blocks (before local_alloc). flag_schedule_insns_after_reload means schedule insns after diff --git a/gcc/opts.c b/gcc/opts.c index c8a488f5d45..cd9e8e3db72 100644 --- a/gcc/opts.c +++ b/gcc/opts.c @@ -1398,7 +1398,9 @@ common_handle_option (size_t scode, const char *arg, case OPT_fsched_stalled_insns_dep_: flag_sched_stalled_insns_dep = value; break; - + case OPT_fmodulo_sched: + flag_modulo_sched = 1; + break; case OPT_fshared_data: flag_shared_data = value; break; diff --git a/gcc/params.def b/gcc/params.def index ff77eb488ce..72095affd4f 100644 --- a/gcc/params.def +++ b/gcc/params.def @@ -229,6 +229,29 @@ DEFPARAM(PARAM_MAX_UNSWITCH_LEVEL, "The maximum number of unswitchings in a single loop", 3) +DEFPARAM(PARAM_MAX_SMS_LOOP_NUMBER, + "max-sms-loop-number", + "Maximum number of loops to perform swing modulo scheduling on \ + (mainly for debugging)", + -1) + +/* This parameter is used to tune SMS MAX II calculations. */ +DEFPARAM(PARAM_SMS_MAX_II_FACTOR, + "sms-max-ii-factor", + "A factor for tuning the upper bound that swing modulo scheduler uses \ + for scheduling a loop", + 100) +DEFPARAM(PARAM_SMS_DFA_HISTORY, + "sms-dfa-history", + "The number of cycles the swing modulo scheduler considers when \ + checking conflicts using DFA", + 0) +DEFPARAM(PARAM_SMS_LOOP_AVERAGE_COUNT_THRESHOLD, + "sms-loop-average-count-threshold", + "A threshold on the average loop count considered by the swing modulo \ + scheduler", + 0) + DEFPARAM(HOT_BB_COUNT_FRACTION, "hot-bb-count-fraction", "Select fraction of the maximal count of repetitions of basic block in \ diff --git a/gcc/params.h b/gcc/params.h index 996f7a0b77e..3611294185a 100644 --- a/gcc/params.h +++ b/gcc/params.h @@ -110,6 +110,14 @@ typedef enum compiler_param PARAM_VALUE (PARAM_GCSE_AFTER_RELOAD_CRITICAL_FRACTION) #define MAX_UNROLLED_INSNS \ PARAM_VALUE (PARAM_MAX_UNROLLED_INSNS) +#define MAX_SMS_LOOP_NUMBER \ + PARAM_VALUE (PARAM_MAX_SMS_LOOP_NUMBER) +#define SMS_MAX_II_FACTOR \ + PARAM_VALUE (PARAM_SMS_MAX_II_FACTOR) +#define SMS_DFA_HISTORY \ + PARAM_VALUE (PARAM_SMS_DFA_HISTORY) +#define SMS_LOOP_AVERAGE_COUNT_THRESHOLD \ + PARAM_VALUE (PARAM_SMS_LOOP_AVERAGE_COUNT_THRESHOLD) #define GLOBAL_VAR_THRESHOLD \ PARAM_VALUE (PARAM_GLOBAL_VAR_THRESHOLD) #define MAX_ALIASED_VOPS \ diff --git a/gcc/passes.c b/gcc/passes.c index 841e361149c..dc19ea88326 100644 --- a/gcc/passes.c +++ b/gcc/passes.c @@ -154,6 +154,7 @@ enum dump_file_index DFI_combine, DFI_ce2, DFI_regmove, + DFI_sms, DFI_sched, DFI_lreg, DFI_greg, @@ -178,7 +179,7 @@ enum dump_file_index Remaining -d letters: - " e m q " + " e q " " K O Q WXY " */ @@ -207,6 +208,7 @@ static struct dump_file_info dump_file_tbl[DFI_MAX] = { "combine", 'c', 1, 0, 0 }, { "ce2", 'C', 1, 0, 0 }, { "regmove", 'N', 1, 0, 0 }, + { "sms", 'm', 0, 0, 0 }, { "sched", 'S', 1, 0, 0 }, { "lreg", 'l', 1, 0, 0 }, { "greg", 'g', 1, 0, 0 }, @@ -742,6 +744,29 @@ rest_of_handle_reorder_blocks (tree decl, rtx insns) static void rest_of_handle_sched (tree decl, rtx insns) { + timevar_push (TV_SMS); + if (optimize > 0 && flag_modulo_sched) + { + + /* Perform SMS module scheduling. */ + open_dump_file (DFI_sms, decl); + + /* We want to be able to create new pseudos. */ + no_new_pseudos = 0; + sms_schedule (dump_file); + close_dump_file (DFI_sms, print_rtl, get_insns ()); + + + /* Update the life information, becuase we add pseudos. */ + max_regno = max_reg_num (); + allocate_reg_info (max_regno, FALSE, FALSE); + update_life_info_in_dirty_blocks (UPDATE_LIFE_GLOBAL_RM_NOTES, + (PROP_DEATH_NOTES + | PROP_KILL_DEAD_CODE + | PROP_SCAN_DEAD_CODE)); + no_new_pseudos = 1; + } + timevar_pop (TV_SMS); timevar_push (TV_SCHED); /* Print function header into sched dump now diff --git a/gcc/rtl.h b/gcc/rtl.h index 65f68d81b59..d7bfc92c7ec 100644 --- a/gcc/rtl.h +++ b/gcc/rtl.h @@ -2461,6 +2461,10 @@ extern void simplify_using_condition (rtx, rtx *, struct bitmap_head_def *); /* In ra.c. */ extern void reg_alloc (void); +/* In modulo-sched.c. */ +#ifdef BUFSIZ +extern void sms_schedule (FILE *); +#endif struct rtl_hooks { diff --git a/gcc/timevar.def b/gcc/timevar.def index ec942588c0e..d02e2ab77e7 100644 --- a/gcc/timevar.def +++ b/gcc/timevar.def @@ -109,6 +109,7 @@ DEFTIMEVAR (TV_COMBINE , "combiner") DEFTIMEVAR (TV_IFCVT , "if-conversion") DEFTIMEVAR (TV_REGMOVE , "regmove") DEFTIMEVAR (TV_MODE_SWITCH , "mode switching") +DEFTIMEVAR (TV_SMS , "sms modulo scheduling") DEFTIMEVAR (TV_SCHED , "scheduling") DEFTIMEVAR (TV_LOCAL_ALLOC , "local alloc") DEFTIMEVAR (TV_GLOBAL_ALLOC , "global alloc") diff --git a/gcc/toplev.c b/gcc/toplev.c index c15ab99f910..db3d37215b7 100644 --- a/gcc/toplev.c +++ b/gcc/toplev.c @@ -707,6 +707,9 @@ int flag_schedule_speculative_load_dangerous = 0; int flag_sched_stalled_insns = 0; int flag_sched_stalled_insns_dep = 1; +/* The following flag controls the module scheduling activation. */ +int flag_modulo_sched = 0; + int flag_single_precision_constant; /* flag_branch_on_count_reg means try to replace add-1,compare,branch tupple @@ -1007,6 +1010,7 @@ static const lang_independent_options f_options[] = {"sched-stalled-insns-dep", &flag_sched_stalled_insns_dep, 1 }, {"sched2-use-superblocks", &flag_sched2_use_superblocks, 1 }, {"sched2-use-traces", &flag_sched2_use_traces, 1 }, + {"modulo-sched", &flag_modulo_sched, 1 }, {"branch-count-reg",&flag_branch_on_count_reg, 1 }, {"pic", &flag_pic, 1 }, {"PIC", &flag_pic, 2 },