/* params.def - Run-time parameters.
- Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
+ Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
Free Software Foundation, Inc.
Written by Mark Mitchell <mark@codesourcery.com>.
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. */
+ The default value is 40. */
DEFPARAM (PARAM_MAX_INLINE_INSNS_AUTO,
"max-inline-insns-auto",
"The maximum number of instructions when automatically inlining",
- 50, 0, 0)
+ 40, 0, 0)
DEFPARAM (PARAM_MAX_INLINE_INSNS_RECURSIVE,
"max-inline-insns-recursive",
"The maximum number of nested indirect inlining performed by early inliner",
10, 0, 0)
+/* Limit on probability of entry BB. */
+DEFPARAM (PARAM_COMDAT_SHARING_PROBABILITY,
+ "comdat-sharing-probability",
+ "Probability that COMDAT function will be shared with different compilatoin unit",
+ 20, 0, 0)
+
+/* Limit on probability of entry BB. */
+DEFPARAM (PARAM_PARTIAL_INLINING_ENTRY_PROBABILITY,
+ "partial-inlining-entry-probability",
+ "Maximum probability of the entry BB of split region (in percent relative to entry BB of the function) to make partial inlining happen",
+ 70, 0, 0)
+
/* Limit the number of expansions created by the variable expansion
optimization to avoid register pressure. */
DEFPARAM (PARAM_MAX_VARIABLE_EXPANSIONS,
DEFPARAM(PARAM_EARLY_INLINING_INSNS,
"early-inlining-insns",
"Maximal estimated growth of function body caused by early inlining of single call",
- 8, 0, 0)
+ 10, 0, 0)
DEFPARAM(PARAM_LARGE_STACK_FRAME,
"large-stack-frame",
"The size of stack frame to be considered large",
"gcse-after-reload-critical-fraction",
"The threshold ratio of critical edges execution count that permit performing redundancy elimination after reload",
10, 0, 0)
+
+/* GCSE will use GCSE_COST_DISTANCE_RATION as a scaling factor
+ to calculate maximum distance for which an expression is allowed to move
+ from its rtx_cost. */
+DEFPARAM(PARAM_GCSE_COST_DISTANCE_RATIO,
+ "gcse-cost-distance-ratio",
+ "Scaling factor in calculation of maximum distance an expression can be moved by GCSE optimizations",
+ 10, 0, 0)
+/* GCSE won't restrict distance for which an expression with rtx_cost greater
+ than COSTS_N_INSN(GCSE_UNRESTRICTED_COST) is allowed to move. */
+DEFPARAM(PARAM_GCSE_UNRESTRICTED_COST,
+ "gcse-unrestricted-cost",
+ "Cost at which GCSE optimizations will not constraint the distance an expression can travel",
+ 3, 0, 0)
+
+/* How deep from a given basic block the dominator tree should be searched
+ for expressions to hoist to the block. The value of 0 will avoid limiting
+ the search. */
+DEFPARAM(PARAM_MAX_HOIST_DEPTH,
+ "max-hoist-depth",
+ "Maximum depth of search in the dominator tree for expressions to hoist",
+ 30, 0, 0)
+
/* This parameter limits the number of insns in a loop that will be unrolled,
and by how much the loop is unrolled.
"max-once-peeled-insns",
"The maximum number of insns of a peeled loop that rolls only once",
400, 0, 0)
+/* The maximum depth of a loop nest we completely peel. */
+DEFPARAM(PARAM_MAX_UNROLL_ITERATIONS,
+ "max-completely-peel-loop-nest-depth",
+ "The maximum depth of a loop nest we completely peel",
+ 8, 0, 0)
/* The maximum number of insns of an unswitched loop. */
DEFPARAM(PARAM_MAX_UNSWITCH_INSNS,
DEFPARAM(PARAM_SCEV_MAX_EXPR_SIZE,
"scev-max-expr-size",
"Bound on size of expressions used in the scalar evolutions analyzer",
- 20, 0, 0)
+ 100, 0, 0)
DEFPARAM(PARAM_OMEGA_MAX_VARS,
"omega-max-vars",
"size of tiles for loop blocking",
51, 0, 0)
+/* Maximal number of parameters that we allow in a SCoP. */
+
+DEFPARAM (PARAM_GRAPHITE_MAX_NB_SCOP_PARAMS,
+ "graphite-max-nb-scop-params",
+ "maximum number of parameters in a SCoP",
+ 10, 0, 0)
+
+/* Maximal number of basic blocks in the functions analyzed by Graphite. */
+
+DEFPARAM (PARAM_GRAPHITE_MAX_BBS_PER_FUNCTION,
+ "graphite-max-bbs-per-function",
+ "maximum number of basic blocks per function to be analyzed by Graphite",
+ 100, 0, 0)
+
/* Avoid doing loop invariant motion on very large loops. */
DEFPARAM (PARAM_LOOP_INVARIANT_MAX_BBS_IN_LOOP,
"Min. ratio of insns to mem ops to enable prefetching in a loop",
3, 0, 0)
+/* Set maximum hash table size for var tracking. */
+
+DEFPARAM (PARAM_MAX_VARTRACK_SIZE,
+ "max-vartrack-size",
+ "Max. size of var tracking hash tables",
+ 50000000, 0, 0)
+
/* Set minimum insn uid for non-debug insns. */
DEFPARAM (PARAM_MIN_NONDEBUG_INSN_UID,
"a pointer to an aggregate with",
2, 0, 0)
+DEFPARAM (PARAM_DEVIRT_TYPE_LIST_SIZE,
+ "devirt-type-list-size",
+ "Maximum size of a type list associated with each parameter for "
+ "devirtualization",
+ 8, 0, 0)
+
+/* WHOPR partitioning configuration. */
+
+DEFPARAM (PARAM_LTO_PARTITIONS,
+ "lto-partitions",
+ "Number of paritions program should be split to",
+ 32, 0, 0)
+
+DEFPARAM (MIN_PARTITION_SIZE,
+ "lto-min-partition",
+ "Size of minimal paritition for WHOPR (in estimated instructions)",
+ 1000, 0, 0)
+
+/* Diagnostic parameters. */
+
+DEFPARAM (CXX_MAX_NAMESPACES_FOR_DIAGNOSTIC_HELP,
+ "cxx-max-namespaces-for-diagnostic-help",
+ "Maximum number of namespaces to search for alternatives when "
+ "name lookup fails",
+ 1000, 0, 0)
+
/*
Local variables:
mode:c
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