/* params.def - Run-time parameters.
- Copyright (C) 2001, 2002, 2004, 2005 Free Software Foundation, Inc.
+ Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
+ Free Software Foundation, Inc.
Written by Mark Mitchell <mark@codesourcery.com>.
This file is part of GCC.
"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)
+/* Limit loop autovectorization to loops with large enough iteration count. */
+DEFPARAM (PARAM_MIN_VECT_LOOP_BOUND,
+ "min-vect-loop-bound",
+ "If -ftree-vectorize is used, the minimal loop bound of a loop to be considered for vectorization",
+ 0, 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
DEFPARAM(PARAM_INLINE_UNIT_GROWTH,
"inline-unit-growth",
"how much can given compilation unit grow because of the inlining (in percent)",
- 50, 0, 0)
+ 30, 0, 0)
DEFPARAM(PARAM_INLINE_CALL_COST,
"inline-call-cost",
"expense of call operation relative to ordinary arithmetic operations",
16, 0, 0)
+DEFPARAM(PARAM_LARGE_STACK_FRAME,
+ "large-stack-frame",
+ "The size of stack frame to be considered large",
+ 256, 0, 0)
+DEFPARAM(PARAM_STACK_FRAME_GROWTH,
+ "large-stack-frame-growth",
+ "Maximal stack frame growth due to inlining (in percent)",
+ 1000, 0, 0)
/* The GCSE optimization will be disabled if it would require
significantly more memory than this value. */
"Bound on size of expressions used in the scalar evolutions analyzer",
20, 0, 0)
+DEFPARAM(PARAM_OMEGA_MAX_VARS,
+ "omega-max-vars",
+ "Bound on the number of variables in Omega constraint systems",
+ 128, 0, 0)
+
+DEFPARAM(PARAM_OMEGA_MAX_GEQS,
+ "omega-max-geqs",
+ "Bound on the number of inequalities in Omega constraint systems",
+ 256, 0, 0)
+
+DEFPARAM(PARAM_OMEGA_MAX_EQS,
+ "omega-max-eqs",
+ "Bound on the number of equalities in Omega constraint systems",
+ 128, 0, 0)
+
+DEFPARAM(PARAM_OMEGA_MAX_WILD_CARDS,
+ "omega-max-wild-cards",
+ "Bound on the number of wild cards in Omega constraint systems",
+ 18, 0, 0)
+
+DEFPARAM(PARAM_OMEGA_HASH_TABLE_SIZE,
+ "omega-hash-table-size",
+ "Bound on the size of the hash table in Omega constraint systems",
+ 550, 0, 0)
+
+DEFPARAM(PARAM_OMEGA_MAX_KEYS,
+ "omega-max-keys",
+ "Bound on the number of keys in Omega constraint systems",
+ 500, 0, 0)
+
+DEFPARAM(PARAM_OMEGA_ELIMINATE_REDUNDANT_CONSTRAINTS,
+ "omega-eliminate-redundant-constraints",
+ "When set to 1, use expensive methods to eliminate all redundant constraints",
+ 0, 0, 1)
+
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",
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)
+ "The maximum number of virtual operators that a function is allowed to have before triggering memory partitioning heuristics",
+ 100, 0, 0)
+
+DEFPARAM(PARAM_AVG_ALIASED_VOPS,
+ "avg-aliased-vops",
+ "The average number of virtual operators that memory statements are allowed to have before triggering memory partitioning heuristics",
+ 1, 0, 0)
DEFPARAM(PARAM_MAX_SCHED_REGION_BLOCKS,
"max-sched-region-blocks",
"The maximum number of instructions ready to be issued to be considered by the scheduler during the first scheduling pass",
100, 0, 0)
+/* Prefetching and cache-optimizations related parameters. Default values are
+ usually set by machine description. */
+
+/* The number of insns executed before prefetch is completed. */
+
+DEFPARAM (PARAM_PREFETCH_LATENCY,
+ "prefetch-latency",
+ "The number of insns executed before prefetch is completed",
+ 200, 0, 0)
+
+/* The number of prefetches that can run at the same time. */
+
+DEFPARAM (PARAM_SIMULTANEOUS_PREFETCHES,
+ "simultaneous-prefetches",
+ "The number of prefetches that can run at the same time",
+ 3, 0, 0)
+
+/* The size of L1 cache in number of cache lines. */
+
+DEFPARAM (PARAM_L1_CACHE_SIZE,
+ "l1-cache-size",
+ "The size of L1 cache",
+ 1024, 0, 0)
+
+/* The size of L1 cache line in bytes. */
+
+DEFPARAM (PARAM_L1_CACHE_LINE_SIZE,
+ "l1-cache-line-size",
+ "The size of L1 cache line",
+ 32, 0, 0)
+
+/* Whether we should use canonical types rather than deep "structural"
+ type checking. Setting this value to 1 (the default) improves
+ compilation performance in the C++ and Objective-C++ front end;
+ this value should only be set to zero to work around bugs in the
+ canonical type system by disabling it. */
+
+DEFPARAM (PARAM_USE_CANONICAL_TYPES,
+ "use-canonical-types",
+ "Whether to use canonical types",
+ 1, 0, 1)
/*
Local variables:
mode:c
-End: */
+End:
+*/
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