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diff --git a/gcc-4.2.1-5666.3/gcc/params.def b/gcc-4.2.1-5666.3/gcc/params.def deleted file mode 100644 index 06d35c938..000000000 --- a/gcc-4.2.1-5666.3/gcc/params.def +++ /dev/null @@ -1,602 +0,0 @@ -/* params.def - Run-time parameters. - Copyright (C) 2001, 2002, 2004, 2005 Free Software Foundation, Inc. - Written by Mark Mitchell <mark@codesourcery.com>. - -This file is part of GCC. - -GCC is free software; you can redistribute it and/or modify it under -the terms of the GNU General Public License as published by the Free -Software Foundation; either version 2, or (at your option) any later -version. - -GCC is distributed in the hope that it will be useful, but WITHOUT ANY -WARRANTY; without even the implied warranty of MERCHANTABILITY or -FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -for more details. - -You should have received a copy of the GNU General Public License -along with GCC; see the file COPYING. If not, write to the Free -Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA -02110-1301, USA. - -*/ - -/* This file contains definitions for language-independent - parameters. The DEFPARAM macro takes 6 arguments: - - - The enumeral corresponding to this parameter. - - - The name that can be used to set this parameter using the - command-line option `--param <name>=<value>'. - - - A help string explaining how the parameter is used. - - - A default value for the parameter. - - - The minimum acceptable value for the parameter. - - - The maximum acceptable value for the parameter (if greater than - the minimum). - - Be sure to add an entry to invoke.texi summarizing the parameter. */ - -/* The maximum number of fields in a variable with only implicit uses - for which structure aliasing will consider trying to track each - field. The default is 5. */ -DEFPARAM (PARAM_SALIAS_MAX_IMPLICIT_FIELDS, - "salias-max-implicit-fields", - "The maximum number of fields in a structure variable without direct structure accesses that GCC will attempt to track separately", - 5, 0, 0) - -/* The maximum number of array elements structure aliasing will decompose - an array for. The default is 4. */ -DEFPARAM (PARAM_SALIAS_MAX_ARRAY_ELEMENTS, - "salias-max-array-elements", - "The maximum number of elements in an array for wich we track its elements separately", - 4, 0, 0) - -/* The maximum structure size at which the scalar replacement of - aggregates (SRA) pass will perform block copies. The default - value, 0, implies that GCC will select the most appropriate size - itself. */ -DEFPARAM (PARAM_SRA_MAX_STRUCTURE_SIZE, - "sra-max-structure-size", - "The maximum structure size (in bytes) for which GCC will " - "use by-element copies", - 0, 0, 0) - -/* The maximum number of structure fields which the SRA pass will - instantiate to avoid block copies. The default value, 0, implies - that GCC will select the appropriate value itself. */ -DEFPARAM (PARAM_SRA_MAX_STRUCTURE_COUNT, - "sra-max-structure-count", - "The maximum number of structure fields for which GCC will " - "use by-element copies", - 0, 0, 0) - -/* The ratio between instantiated fields and the complete structure - size. We say that if the ratio of the number of bytes in - instantiated fields to the number of bytes in the complete - structure exceeds this parameter, or if the number of instantiated - fields to the total number of fields exceeds this parameter, then - block copies are not used. The default is 75%. */ -DEFPARAM (PARAM_SRA_FIELD_STRUCTURE_RATIO, - "sra-field-structure-ratio", - "The threshold ratio between instantiated fields and the total structure size", - 75, 0, 100) - -/* The single function inlining limit. This is the maximum size - of a function counted in internal gcc instructions (not in - real machine instructions) that is eligible for inlining - by the tree inliner. - The default value is 450. - Only functions marked inline (or methods defined in the class - definition for C++) are affected by this. - There are more restrictions to inlining: If inlined functions - call other functions, the already inlined instructions are - counted and once the recursive inline limit (see - "max-inline-insns" parameter) is exceeded, the acceptable size - gets decreased. */ -DEFPARAM (PARAM_MAX_INLINE_INSNS_SINGLE, - "max-inline-insns-single", - "The maximum number of instructions in a single function eligible for inlining", - 450, 0, 0) - -/* The single function inlining limit for functions that are - inlined by virtue of -finline-functions (-O3). - This limit should be chosen to be below or equal to the limit - that is applied to functions marked inlined (or defined in the - class declaration in C++) given by the "max-inline-insns-single" - parameter. - The default value is 90. */ -DEFPARAM (PARAM_MAX_INLINE_INSNS_AUTO, - "max-inline-insns-auto", - "The maximum number of instructions when automatically inlining", - 90, 0, 0) - -DEFPARAM (PARAM_MAX_INLINE_INSNS_RECURSIVE, - "max-inline-insns-recursive", - "The maximum number of instructions inline function can grow to via recursive inlining", - 450, 0, 0) - -DEFPARAM (PARAM_MAX_INLINE_INSNS_RECURSIVE_AUTO, - "max-inline-insns-recursive-auto", - "The maximum number of instructions non-inline function can grow to via recursive inlining", - 450, 0, 0) - -DEFPARAM (PARAM_MAX_INLINE_RECURSIVE_DEPTH, - "max-inline-recursive-depth", - "The maximum depth of recursive inlining for inline functions", - 8, 0, 0) - -DEFPARAM (PARAM_MAX_INLINE_RECURSIVE_DEPTH_AUTO, - "max-inline-recursive-depth-auto", - "The maximum depth of recursive inlining for non-inline functions", - 8, 0, 0) - -DEFPARAM (PARAM_MIN_INLINE_RECURSIVE_PROBABILITY, - "min-inline-recursive-probability", - "Inline recursively only when the probability of call being executed exceeds the parameter", - 10, 0, 0) - -/* Limit the number of expansions created by the variable expansion - optimization to avoid register pressure. */ -DEFPARAM (PARAM_MAX_VARIABLE_EXPANSIONS, - "max-variable-expansions-in-unroller", - "If -fvariable-expansion-in-unroller is used, the maximum number of times that an individual variable will be expanded during loop unrolling", - 1, 0, 0) - -/* The maximum number of instructions to consider when looking for an - instruction to fill a delay slot. If more than this arbitrary - number of instructions is searched, the time savings from filling - the delay slot will be minimal so stop searching. Increasing - values mean more aggressive optimization, making the compile time - increase with probably small improvement in executable run time. */ -DEFPARAM (PARAM_MAX_DELAY_SLOT_INSN_SEARCH, - "max-delay-slot-insn-search", - "The maximum number of instructions to consider to fill a delay slot", - 100, 0, 0) - -/* When trying to fill delay slots, the maximum number of instructions - to consider when searching for a block with valid live register - information. Increasing this arbitrarily chosen value means more - aggressive optimization, increasing the compile time. This - parameter should be removed when the delay slot code is rewritten - to maintain the control-flow graph. */ -DEFPARAM(PARAM_MAX_DELAY_SLOT_LIVE_SEARCH, - "max-delay-slot-live-search", - "The maximum number of instructions to consider to find accurate live register information", - 333, 0, 0) - -/* This parameter limits the number of branch elements that the - scheduler will track anti-dependencies through without resetting - the tracking mechanism. Large functions with few calls or barriers - can generate lists containing many 1000's of dependencies. Generally - the compiler either uses all available memory, or runs for far too long. */ -DEFPARAM(PARAM_MAX_PENDING_LIST_LENGTH, - "max-pending-list-length", - "The maximum length of scheduling's pending operations list", - 32, 0, 0) - -DEFPARAM(PARAM_LARGE_FUNCTION_INSNS, - "large-function-insns", - "The size of function body to be considered large", - 2700, 0, 0) -DEFPARAM(PARAM_LARGE_FUNCTION_GROWTH, - "large-function-growth", - "Maximal growth due to inlining of large function (in percent)", - 100, 0, 0) -DEFPARAM(PARAM_LARGE_UNIT_INSNS, - "large-unit-insns", - "The size of translation unit to be considered large", - 10000, 0, 0) -DEFPARAM(PARAM_INLINE_UNIT_GROWTH, - "inline-unit-growth", - "how much can given compilation unit grow because of the inlining (in percent)", - 50, 0, 0) -DEFPARAM(PARAM_INLINE_CALL_COST, - "inline-call-cost", - "expense of call operation relative to ordinary arithmetic operations", - 16, 0, 0) - -/* The GCSE optimization will be disabled if it would require - significantly more memory than this value. */ -DEFPARAM(PARAM_MAX_GCSE_MEMORY, - "max-gcse-memory", - "The maximum amount of memory to be allocated by GCSE", - 50 * 1024 * 1024, 0, 0) -/* The number of repetitions of copy/const prop and PRE to run. */ -DEFPARAM(PARAM_MAX_GCSE_PASSES, - "max-gcse-passes", - "The maximum number of passes to make when doing GCSE", - 1, 1, 0) -/* This is the threshold ratio when to perform partial redundancy - elimination after reload. We perform partial redundancy elimination - when the following holds: - (Redundant load execution count) - ------------------------------- >= GCSE_AFTER_RELOAD_PARTIAL_FRACTION - (Added loads execution count) */ -DEFPARAM(PARAM_GCSE_AFTER_RELOAD_PARTIAL_FRACTION, - "gcse-after-reload-partial-fraction", - "The threshold ratio for performing partial redundancy elimination after reload", - 3, 0, 0) -/* This is the threshold ratio of the critical edges execution count compared to - the redundant loads execution count that permits performing the load - redundancy elimination in gcse after reload. */ -DEFPARAM(PARAM_GCSE_AFTER_RELOAD_CRITICAL_FRACTION, - "gcse-after-reload-critical-fraction", - "The threshold ratio of critical edges execution count that permit performing redundancy elimination after reload", - 10, 0, 0) -/* This parameter limits the number of insns in a loop that will be unrolled, - and by how much the loop is unrolled. - - This limit should be at most half of the peeling limits: loop unroller - decides to not unroll loops that iterate fewer than 2*number of allowed - unrollings and thus we would have loops that are neither peeled or unrolled - otherwise. */ -DEFPARAM(PARAM_MAX_UNROLLED_INSNS, - "max-unrolled-insns", - "The maximum number of instructions to consider to unroll in a loop", - 200, 0, 0) -/* This parameter limits how many times the loop is unrolled depending - on number of insns really executed in each iteration. */ -DEFPARAM(PARAM_MAX_AVERAGE_UNROLLED_INSNS, - "max-average-unrolled-insns", - "The maximum number of instructions to consider to unroll in a loop on average", - 80, 0, 0) -/* The maximum number of unrollings of a single loop. */ -DEFPARAM(PARAM_MAX_UNROLL_TIMES, - "max-unroll-times", - "The maximum number of unrollings of a single loop", - 8, 0, 0) -/* The maximum number of insns of a peeled loop. */ -DEFPARAM(PARAM_MAX_PEELED_INSNS, - "max-peeled-insns", - "The maximum number of insns of a peeled loop", - 400, 0, 0) -/* The maximum number of peelings of a single loop. */ -DEFPARAM(PARAM_MAX_PEEL_TIMES, - "max-peel-times", - "The maximum number of peelings of a single loop", - 16, 0, 0) -/* The maximum number of insns of a peeled loop. */ -DEFPARAM(PARAM_MAX_COMPLETELY_PEELED_INSNS, - "max-completely-peeled-insns", - "The maximum number of insns of a completely peeled loop", - 400, 0, 0) -/* The maximum number of peelings of a single loop that is peeled completely. */ -DEFPARAM(PARAM_MAX_COMPLETELY_PEEL_TIMES, - "max-completely-peel-times", - "The maximum number of peelings of a single loop that is peeled completely", - 16, 0, 0) -/* The maximum number of insns of a peeled loop that rolls only once. */ -DEFPARAM(PARAM_MAX_ONCE_PEELED_INSNS, - "max-once-peeled-insns", - "The maximum number of insns of a peeled loop that rolls only once", - 400, 0, 0) - -/* The maximum number of insns of an unswitched loop. */ -DEFPARAM(PARAM_MAX_UNSWITCH_INSNS, - "max-unswitch-insns", - "The maximum number of insns of an unswitched loop", - 50, 0, 0) -/* The maximum level of recursion in unswitch_single_loop. */ -DEFPARAM(PARAM_MAX_UNSWITCH_LEVEL, - "max-unswitch-level", - "The maximum number of unswitchings in a single loop", - 3, 0, 0) - -/* The maximum number of iterations of a loop the brute force algorithm - for analysis of # of iterations of the loop tries to evaluate. */ -DEFPARAM(PARAM_MAX_ITERATIONS_TO_TRACK, - "max-iterations-to-track", - "Bound on the number of iterations the brute force # of iterations analysis algorithm evaluates", - 1000, 0, 0) -/* A cutoff to avoid costly computations of the number of iterations in - the doloop transformation. */ -DEFPARAM(PARAM_MAX_ITERATIONS_COMPUTATION_COST, - "max-iterations-computation-cost", - "Bound on the cost of an expression to compute the number of iterations", - 10, 0, 0) - -DEFPARAM(PARAM_MAX_SMS_LOOP_NUMBER, - "max-sms-loop-number", - "Maximum number of loops to perform swing modulo scheduling on (mainly for debugging)", - -1, -1, -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, 0, 0) -DEFPARAM(PARAM_SMS_DFA_HISTORY, - "sms-dfa-history", - "The number of cycles the swing modulo scheduler considers when checking conflicts using DFA", - 0, 0, 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, 0, 0) - -DEFPARAM(HOT_BB_COUNT_FRACTION, - "hot-bb-count-fraction", - "Select fraction of the maximal count of repetitions of basic block in program given basic block needs to have to be considered hot", - 10000, 0, 0) -DEFPARAM(HOT_BB_FREQUENCY_FRACTION, - "hot-bb-frequency-fraction", - "Select fraction of the maximal frequency of executions of basic block in function given basic block needs to have to be considered hot", - 1000, 0, 0) - -/* For guessed profiles, the loops having unknown number of iterations - are predicted to iterate relatively few (10) times at average. - For functions containing one loop with large known number of iterations - and other loops having unbounded loops we would end up predicting all - the other loops cold that is not usually the case. So we need to artificially - flatten the profile. - - We need to cut the maximal predicted iterations to large enough iterations - so the loop appears important, but safely within HOT_BB_COUNT_FRACTION - range. */ - -DEFPARAM(PARAM_MAX_PREDICTED_ITERATIONS, - "max-predicted-iterations", - "The maximum number of loop iterations we predict statically", - 100, 0, 0) -DEFPARAM(TRACER_DYNAMIC_COVERAGE_FEEDBACK, - "tracer-dynamic-coverage-feedback", - "The percentage of function, weighted by execution frequency, that must be covered by trace formation. Used when profile feedback is available", - 95, 0, 100) -DEFPARAM(TRACER_DYNAMIC_COVERAGE, - "tracer-dynamic-coverage", - "The percentage of function, weighted by execution frequency, that must be covered by trace formation. Used when profile feedback is not available", - 75, 0, 100) -DEFPARAM(TRACER_MAX_CODE_GROWTH, - "tracer-max-code-growth", - "Maximal code growth caused by tail duplication (in percent)", - 100, 0, 0) -DEFPARAM(TRACER_MIN_BRANCH_RATIO, - "tracer-min-branch-ratio", - "Stop reverse growth if the reverse probability of best edge is less than this threshold (in percent)", - 10, 0, 100) -DEFPARAM(TRACER_MIN_BRANCH_PROBABILITY_FEEDBACK, - "tracer-min-branch-probability-feedback", - "Stop forward growth if the probability of best edge is less than this threshold (in percent). Used when profile feedback is available", - 80, 0, 100) -DEFPARAM(TRACER_MIN_BRANCH_PROBABILITY, - "tracer-min-branch-probability", - "Stop forward growth if the probability of best edge is less than this threshold (in percent). Used when profile feedback is not available", - 50, 0, 100) - -/* The maximum number of incoming edges to consider for crossjumping. */ -DEFPARAM(PARAM_MAX_CROSSJUMP_EDGES, - "max-crossjump-edges", - "The maximum number of incoming edges to consider for crossjumping", - 100, 0, 0) - -/* The minimum number of matching instructions to consider for crossjumping. */ -DEFPARAM(PARAM_MIN_CROSSJUMP_INSNS, - "min-crossjump-insns", - "The minimum number of matching instructions to consider for crossjumping", - 5, 0, 0) - -/* The maximum number expansion factor when copying basic blocks. */ -DEFPARAM(PARAM_MAX_GROW_COPY_BB_INSNS, - "max-grow-copy-bb-insns", - "The maximum expansion factor when copying basic blocks", - 8, 0, 0) - -/* The maximum number of insns to duplicate when unfactoring computed gotos. */ -DEFPARAM(PARAM_MAX_GOTO_DUPLICATION_INSNS, - "max-goto-duplication-insns", - "The maximum number of insns to duplicate when unfactoring computed gotos", - 8, 0, 0) - -/* The maximum length of path considered in cse. */ -DEFPARAM(PARAM_MAX_CSE_PATH_LENGTH, - "max-cse-path-length", - "The maximum length of path considered in cse", - 10, 0, 0) -DEFPARAM(PARAM_MAX_CSE_INSNS, - "max-cse-insns", - "The maximum instructions CSE process before flushing", - 1000, 0, 0) - -/* The cost of expression in loop invariant motion that is considered - expensive. */ -DEFPARAM(PARAM_LIM_EXPENSIVE, - "lim-expensive", - "The minimum cost of an expensive expression in the loop invariant motion", - 20, 0, 0) - -/* Bound on number of candidates for induction variables below that - all candidates are considered for each use in induction variable - optimizations. */ - -DEFPARAM(PARAM_IV_CONSIDER_ALL_CANDIDATES_BOUND, - "iv-consider-all-candidates-bound", - "Bound on number of candidates below that all candidates are considered in iv optimizations", - 30, 0, 0) - -/* The induction variable optimizations give up on loops that contain more - induction variable uses. */ - -DEFPARAM(PARAM_IV_MAX_CONSIDERED_USES, - "iv-max-considered-uses", - "Bound on number of iv uses in loop optimized in iv optimizations", - 250, 0, 0) - -/* If there are at most this number of ivs in the set, try removing unnecessary - ivs from the set always. */ - -DEFPARAM(PARAM_IV_ALWAYS_PRUNE_CAND_SET_BOUND, - "iv-always-prune-cand-set-bound", - "If number of candidates in the set is smaller, we always try to remove unused ivs during its optimization", - 10, 0, 0) - -DEFPARAM(PARAM_SCEV_MAX_EXPR_SIZE, - "scev-max-expr-size", - "Bound on size of expressions used in the scalar evolutions analyzer", - 20, 0, 0) - -DEFPARAM(PARAM_VECT_MAX_VERSION_CHECKS, - "vect-max-version-checks", - "Bound on number of runtime checks inserted by the vectorizer's loop versioning", - 6, 0, 0) - -/* The product of the next two is used to decide whether or not to - use .GLOBAL_VAR. See tree-dfa.c. */ -DEFPARAM(PARAM_GLOBAL_VAR_THRESHOLD, - "global-var-threshold", - "Given N calls and V call-clobbered vars in a function. Use .GLOBAL_VAR if NxV is larger than this limit", - 500000, 0, 0) - -DEFPARAM(PARAM_MAX_CSELIB_MEMORY_LOCATIONS, - "max-cselib-memory-locations", - "The maximum memory locations recorded by cselib", - 500, 0, 0) -DEFPARAM(PARAM_MAX_FLOW_MEMORY_LOCATIONS, - "max-flow-memory-locations", - "The maximum memory locations recorded by flow", - 100, 0, 0) - -#ifdef ENABLE_GC_ALWAYS_COLLECT -# define GGC_MIN_EXPAND_DEFAULT 0 -# define GGC_MIN_HEAPSIZE_DEFAULT 0 -#else -/* APPLE LOCAL begin try to improve ggc */ -# define GGC_MIN_EXPAND_DEFAULT 100 -# define GGC_MIN_HEAPSIZE_DEFAULT 8192 -/* APPLE LOCAL end try to improve ggc*/ -#endif - -DEFPARAM(GGC_MIN_EXPAND, - "ggc-min-expand", - "Minimum heap expansion to trigger garbage collection, as a percentage of the total size of the heap", - GGC_MIN_EXPAND_DEFAULT, 0, 0) - -DEFPARAM(GGC_MIN_HEAPSIZE, - "ggc-min-heapsize", - "Minimum heap size before we start collecting garbage, in kilobytes", - GGC_MIN_HEAPSIZE_DEFAULT, 0, 0) - -#undef GGC_MIN_EXPAND_DEFAULT -#undef GGC_MIN_HEAPSIZE_DEFAULT - -DEFPARAM(PARAM_MAX_RELOAD_SEARCH_INSNS, - "max-reload-search-insns", - "The maximum number of instructions to search backward when looking for equivalent reload", - 100, 0, 0) - -DEFPARAM(PARAM_MAX_ALIASED_VOPS, - "max-aliased-vops", - "The maximum number of virtual operands allowed to represent aliases before triggering alias grouping", - 500, 0, 0) - -DEFPARAM(PARAM_MAX_SCHED_REGION_BLOCKS, - "max-sched-region-blocks", - "The maximum number of blocks in a region to be considered for interblock scheduling", - 10, 0, 0) - -DEFPARAM(PARAM_MAX_SCHED_REGION_INSNS, - "max-sched-region-insns", - "The maximum number of insns in a region to be considered for interblock scheduling", - 100, 0, 0) - -DEFPARAM(PARAM_MIN_SPEC_PROB, - "min-spec-prob", - "The minimum probability of reaching a source block for interblock speculative scheduling", - 40, 0, 0) - -DEFPARAM(PARAM_MAX_SCHED_EXTEND_REGIONS_ITERS, - "max-sched-extend-regions-iters", - "The maximum number of iterations through CFG to extend regions", - 0, 0, 0) - -DEFPARAM(PARAM_MAX_SCHED_INSN_CONFLICT_DELAY, - "max-sched-insn-conflict-delay", - "The maximum conflict delay for an insn to be considered for speculative motion", - 3, 1, 10) - -DEFPARAM(PARAM_SCHED_SPEC_PROB_CUTOFF, - "sched-spec-prob-cutoff", - "The minimal probability of speculation success (in percents), so that speculative insn will be scheduled.", - 40, 0, 100) - -DEFPARAM(PARAM_MAX_LAST_VALUE_RTL, - "max-last-value-rtl", - "The maximum number of RTL nodes that can be recorded as combiner's last value", - 10000, 0, 0) - -/* INTEGER_CST nodes are shared for values [{-1,0} .. N) for - {signed,unsigned} integral types. This determines N. - Experimentation shows 256 to be a good value. */ -DEFPARAM (PARAM_INTEGER_SHARE_LIMIT, - "integer-share-limit", - "The upper bound for sharing integer constants", - 256, 2, 2) - -/* Incremental SSA updates for virtual operands may be very slow if - there is a large number of mappings to process. In those cases, it - is faster to rewrite the virtual symbols from scratch as if they - had been recently introduced. This heuristic cannot be applied to - SSA mappings for real SSA names, only symbols kept in FUD chains. - - PARAM_MIN_VIRTUAL_MAPPINGS specifies the minimum number of virtual - mappings that should be registered to trigger the heuristic. - - PARAM_VIRTUAL_MAPPINGS_TO_SYMS_RATIO specifies the ratio between - mappings and symbols. If the number of virtual mappings is - PARAM_VIRTUAL_MAPPINGS_TO_SYMS_RATIO bigger than the number of - virtual symbols to be updated, then the updater switches to a full - update for those symbols. */ -DEFPARAM (PARAM_MIN_VIRTUAL_MAPPINGS, - "min-virtual-mappings", - "Minimum number of virtual mappings to consider switching to full virtual renames", - 100, 0, 0) - -DEFPARAM (PARAM_VIRTUAL_MAPPINGS_TO_SYMS_RATIO, - "virtual-mappings-ratio", - "Ratio between virtual mappings and virtual symbols to do full virtual renames", - 3, 0, 0) - -DEFPARAM (PARAM_SSP_BUFFER_SIZE, - "ssp-buffer-size", - "The lower bound for a buffer to be considered for stack smashing protection", - 8, 1, 0) - -/* When we thread through a block we have to make copies of the - statements within the block. Clearly for large blocks the code - duplication is bad. - - PARAM_MAX_JUMP_THREAD_DUPLICATION_STMTS specifies the maximum number - of statements and PHI nodes allowed in a block which is going to - be duplicated for thread jumping purposes. - - Some simple analysis showed that more than 99% of the jump - threading opportunities are for blocks with less than 15 - statements. So we can get the benefits of jump threading - without excessive code bloat for pathological cases with the - throttle set at 15 statements. */ -DEFPARAM (PARAM_MAX_JUMP_THREAD_DUPLICATION_STMTS, - "max-jump-thread-duplication-stmts", - "Maximum number of statements allowed in a block that needs to be duplicated when threading jumps", - 15, 0, 0) - -/* This is the maximum number of fields a variable may have before the pointer analysis machinery - will stop trying to treat it in a field-sensitive manner. - There are programs out there with thousands of fields per structure, and handling them - field-sensitively is not worth the cost. */ -DEFPARAM (PARAM_MAX_FIELDS_FOR_FIELD_SENSITIVE, - "max-fields-for-field-sensitive", - "Maximum number of fields in a structure before pointer analysis treats the structure as a single variable", - 100, 0, 0) - -DEFPARAM(PARAM_MAX_SCHED_READY_INSNS, - "max-sched-ready-insns", - "The maximum number of instructions ready to be issued to be considered by the scheduler during the first scheduling pass", - 100, 0, 0) - -/* -Local variables: -mode:c -End: */ |