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[PR 18667]: Add parameter range check
- From: Nathan Sidwell <nathan at codesourcery dot com>
- To: GCC Patches <gcc-patches at gcc dot gnu dot org>
- Date: Mon, 29 Nov 2004 10:29:20 +0000
- Subject: [PR 18667]: Add parameter range check
- Organization: Codesourcery LLC
This patch adds a parameter range check to fix PR 18667, where
a very small value causes an ICE. We have both min and max
values to form an interval [min, max]. If the max value is the
same as the min value, the half open interval
[min,most_pos_int] is used.
I noticed that some of the parameter help strings contained embedded
tabs, due to their formatting. I removed those tabs.
booted & tested on i686-pc-linux-gnu, ok?
nathan
--
Nathan Sidwell :: http://www.codesourcery.com :: CodeSourcery LLC
nathan@codesourcery.com :: http://www.planetfall.pwp.blueyonder.co.uk
2004-11-29 Nathan Sidwell <nathan@codesourcery.com>
PR middle-end/18667
* params.c (set_param_value): Add range check.
* params.def: Add min and max values. Reformat long strings.
* params.h (struct param_info): Add min and max fields.
(enum compiler_param): Adjust DEFPARAM.
* toplev.c (lang_independent_params): Likewise.
Index: params.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/params.c,v
retrieving revision 1.10
diff -c -3 -p -r1.10 params.c
*** params.c 15 Oct 2004 14:47:09 -0000 1.10
--- params.c 29 Nov 2004 09:37:00 -0000
*************** set_param_value (const char *name, int v
*** 68,74 ****
for (i = 0; i < num_compiler_params; ++i)
if (strcmp (compiler_params[i].option, name) == 0)
{
! compiler_params[i].value = value;
return;
}
--- 68,84 ----
for (i = 0; i < num_compiler_params; ++i)
if (strcmp (compiler_params[i].option, name) == 0)
{
! if (value < compiler_params[i].min_value)
! error ("minimum value of parameter %qs is %u",
! compiler_params[i].option,
! compiler_params[i].min_value);
! else if (compiler_params[i].max_value > compiler_params[i].min_value
! && value > compiler_params[i].max_value)
! error ("maximum value of parameter %qs is %u",
! compiler_params[i].option,
! compiler_params[i].max_value);
! else
! compiler_params[i].value = value;
return;
}
Index: params.def
===================================================================
RCS file: /cvs/gcc/gcc/gcc/params.def,v
retrieving revision 1.49
diff -c -3 -p -r1.49 params.def
*** params.def 29 Nov 2004 09:33:08 -0000 1.49
--- params.def 29 Nov 2004 09:37:01 -0000
*************** Software Foundation, 59 Temple Place - S
*** 41,48 ****
itself. */
DEFPARAM (PARAM_SRA_MAX_STRUCTURE_SIZE,
"sra-max-structure-size",
! "The maximum structure size (in bytes) at which GCC will do block copies.",
! 0)
/* The ratio between instantiated fields and the complete structure
size. We say that if the ratio of the number of bytes in
--- 41,48 ----
itself. */
DEFPARAM (PARAM_SRA_MAX_STRUCTURE_SIZE,
"sra-max-structure-size",
! "The maximum structure size (in bytes) at which GCC will do block 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
*************** DEFPARAM (PARAM_SRA_MAX_STRUCTURE_SIZE,
*** 51,58 ****
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)
/* The single function inlining limit. This is the maximum size
of a function counted in internal gcc instructions (not in
--- 51,58 ----
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
*************** DEFPARAM (PARAM_SRA_FIELD_STRUCTURE_RATI
*** 70,76 ****
DEFPARAM (PARAM_MAX_INLINE_INSNS_SINGLE,
"max-inline-insns-single",
"The maximum number of instructions in a single function eligible for inlining",
! 500)
/* The single function inlining limit for functions that are
inlined by virtue of -finline-functions (-O3).
--- 70,76 ----
DEFPARAM (PARAM_MAX_INLINE_INSNS_SINGLE,
"max-inline-insns-single",
"The maximum number of instructions in a single function eligible for inlining",
! 500, 0, 0)
/* The single function inlining limit for functions that are
inlined by virtue of -finline-functions (-O3).
*************** DEFPARAM (PARAM_MAX_INLINE_INSNS_SINGLE,
*** 82,108 ****
DEFPARAM (PARAM_MAX_INLINE_INSNS_AUTO,
"max-inline-insns-auto",
"The maximum number of instructions when automatically inlining",
! 120)
DEFPARAM (PARAM_MAX_INLINE_INSNS_RECURSIVE,
"max-inline-insns-recursive",
"The maximum number of instructions inline function can grow to via recursive inlining",
! 500)
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",
! 500)
DEFPARAM (PARAM_MAX_INLINE_RECURSIVE_DEPTH,
"max-inline-recursive-depth",
"The maximum depth of recursive inlining for inline functions",
! 8)
DEFPARAM (PARAM_MAX_INLINE_RECURSIVE_DEPTH_AUTO,
"max-inline-recursive-depth-auto",
"The maximum depth of recursive inlining for non-inline functions",
! 8)
/* Limit the number of expansions created by the variable expansion
optimization to avoid register pressure. */
--- 82,108 ----
DEFPARAM (PARAM_MAX_INLINE_INSNS_AUTO,
"max-inline-insns-auto",
"The maximum number of instructions when automatically inlining",
! 120, 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",
! 500, 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",
! 500, 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)
/* Limit the number of expansions created by the variable expansion
optimization to avoid register pressure. */
*************** DEFPARAM (PARAM_MAX_VARIABLE_EXPANSIONS,
*** 111,117 ****
"If -fvariable-expansion-in-unroller is used, the maximum number of \
times that an individual variable will be expanded \
during loop unrolling",
! 1)
/* The maximum number of instructions to consider when looking for an
instruction to fill a delay slot. If more than this arbitrary
--- 111,117 ----
"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
*************** DEFPARAM (PARAM_MAX_VARIABLE_EXPANSIONS,
*** 122,128 ****
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)
/* When trying to fill delay slots, the maximum number of instructions
to consider when searching for a block with valid live register
--- 122,128 ----
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
*************** DEFPARAM (PARAM_MAX_DELAY_SLOT_INSN_SEAR
*** 133,139 ****
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)
/* This parameter limits the number of branch elements that the
scheduler will track anti-dependencies through without resetting
--- 133,139 ----
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
*************** DEFPARAM(PARAM_MAX_DELAY_SLOT_LIVE_SEARC
*** 143,174 ****
DEFPARAM(PARAM_MAX_PENDING_LIST_LENGTH,
"max-pending-list-length",
"The maximum length of scheduling's pending operations list",
! 32)
DEFPARAM(PARAM_LARGE_FUNCTION_INSNS,
"large-function-insns",
"The size of function body to be considered large",
! 3000)
DEFPARAM(PARAM_LARGE_FUNCTION_GROWTH,
"large-function-growth",
"Maximal growth due to inlining of large function (in percent)",
! 100)
DEFPARAM(PARAM_INLINE_UNIT_GROWTH,
"inline-unit-growth",
"how much can given compilation unit grow because of the inlining (in percent)",
! 50)
/* 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)
/* 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)
/* This is the threshold ratio when to perform partial redundancy
elimination after reload. We perform partial redundancy elimination
when the following holds:
--- 143,174 ----
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",
! 3000, 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_INLINE_UNIT_GROWTH,
"inline-unit-growth",
"how much can given compilation unit grow because of the inlining (in percent)",
! 50, 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:
*************** DEFPARAM(PARAM_MAX_GCSE_PASSES,
*** 177,193 ****
(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)
/* 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)
/* This parameter limits the number of insns in a loop that will be unrolled,
and by how much the loop is unrolled.
--- 177,191 ----
(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.
*************** DEFPARAM(PARAM_GCSE_AFTER_RELOAD_CRITICA
*** 198,347 ****
DEFPARAM(PARAM_MAX_UNROLLED_INSNS,
"max-unrolled-insns",
"The maximum number of instructions to consider to unroll in a loop",
! 200)
/* 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)
/* 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)
/* 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)
/* 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)
/* 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)
/* 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)
/* 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)
/* 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)
/* 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)
/* 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)
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 \
! program given basic block needs to have to be considered hot",
! 10000)
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)
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)
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)
DEFPARAM(TRACER_MAX_CODE_GROWTH,
"tracer-max-code-growth",
"Maximal code growth caused by tail duplication (in percent)",
! 100)
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)
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)
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)
/* 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)
/* 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)
/* 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)
/* 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)
/* Bound on number of candidates for induction variables below that
all candidates are considered for each use in induction variable
--- 196,334 ----
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)
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)
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 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)
/* 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
*************** DEFPARAM(PARAM_LIM_EXPENSIVE,
*** 350,356 ****
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)
/* The induction variable optimizations give up on loops that contain more
induction variable uses. */
--- 337,343 ----
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_CONSIDER_ALL_CANDIDATE
*** 358,376 ****
DEFPARAM(PARAM_IV_MAX_CONSIDERED_USES,
"iv-max-considered-uses",
"Bound on number of iv uses in loop optimized in iv optimizations",
! 250)
/* 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)
DEFPARAM(PARAM_MAX_CSELIB_MEMORY_LOCATIONS,
"max-cselib-memory-locations",
"The maximum memory locations recorded by cselib",
! 500)
#ifdef ENABLE_GC_ALWAYS_COLLECT
# define GGC_MIN_EXPAND_DEFAULT 0
--- 345,363 ----
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)
/* 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)
#ifdef ENABLE_GC_ALWAYS_COLLECT
# define GGC_MIN_EXPAND_DEFAULT 0
*************** DEFPARAM(PARAM_MAX_CSELIB_MEMORY_LOCATIO
*** 382,395 ****
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)
DEFPARAM(GGC_MIN_HEAPSIZE,
"ggc-min-heapsize",
"Minimum heap size before we start collecting garbage, in kilobytes",
! GGC_MIN_HEAPSIZE_DEFAULT)
#undef GGC_MIN_EXPAND_DEFAULT
#undef GGC_MIN_HEAPSIZE_DEFAULT
--- 369,381 ----
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(GGC_MIN_HEAPSIZE,
*** 397,418 ****
DEFPARAM(PARAM_MAX_RELOAD_SEARCH_INSNS,
"max-reload-search-insns",
"The maximum number of instructions to search backward when looking for equivalent reload",
! 100)
DEFPARAM(PARAM_MAX_ALIASED_VOPS,
"max-aliased-vops",
"The maximum number of virtual operands allowed to represent aliases before triggering alias grouping.",
! 500)
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)
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)
/* INTEGER_CST nodes are shared for values [{-1,0} .. N) for
{signed,unsigned} integral types. This determines N.
--- 383,404 ----
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)
/* INTEGER_CST nodes are shared for values [{-1,0} .. N) for
{signed,unsigned} integral types. This determines N.
*************** DEFPARAM(PARAM_MAX_SCHED_REGION_INSNS,
*** 420,426 ****
DEFPARAM (PARAM_INTEGER_SHARE_LIMIT,
"integer-share-limit",
"The upper bound for sharing integer constants",
! 256)
/*
Local variables:
--- 406,412 ----
DEFPARAM (PARAM_INTEGER_SHARE_LIMIT,
"integer-share-limit",
"The upper bound for sharing integer constants",
! 256, 2, 2)
/*
Local variables:
Index: params.h
===================================================================
RCS file: /cvs/gcc/gcc/gcc/params.h,v
retrieving revision 1.24
diff -c -3 -p -r1.24 params.h
*** params.h 29 Nov 2004 09:33:08 -0000 1.24
--- params.h 29 Nov 2004 09:37:01 -0000
*************** typedef struct param_info
*** 48,53 ****
--- 48,60 ----
const char *const option;
/* The associated value. */
int value;
+
+ /* Minimum acceptable value. */
+ int min_value;
+
+ /* Maxiumum acceptable value, if greater than minimum */
+ int max_value;
+
/* A short description of the option. */
const char *const help;
} param_info;
*************** extern void set_param_value (const char
*** 70,76 ****
typedef enum compiler_param
{
! #define DEFPARAM(enumerator, option, msgid, default) \
enumerator,
#include "params.def"
#undef DEFPARAM
--- 77,83 ----
typedef enum compiler_param
{
! #define DEFPARAM(enumerator, option, msgid, default, min, max) \
enumerator,
#include "params.def"
#undef DEFPARAM
Index: toplev.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/toplev.c,v
retrieving revision 1.933
diff -c -3 -p -r1.933 toplev.c
*** toplev.c 25 Nov 2004 17:11:24 -0000 1.933
--- toplev.c 29 Nov 2004 09:37:05 -0000
*************** int flag_evaluation_order = 0;
*** 367,377 ****
const char *user_label_prefix;
static const param_info lang_independent_params[] = {
! #define DEFPARAM(ENUM, OPTION, HELP, DEFAULT) \
! { OPTION, DEFAULT, HELP },
#include "params.def"
#undef DEFPARAM
! { NULL, 0, NULL }
};
/* Here is a table, controlled by the tm.h file, listing each -m switch
--- 367,377 ----
const char *user_label_prefix;
static const param_info lang_independent_params[] = {
! #define DEFPARAM(ENUM, OPTION, HELP, DEFAULT, MIN, MAX) \
! { OPTION, DEFAULT, MIN, MAX, HELP },
#include "params.def"
#undef DEFPARAM
! { NULL, 0, 0, 0, NULL }
};
/* Here is a table, controlled by the tm.h file, listing each -m switch