/* params.def - Run-time parameters.
- Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
+ Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
Free Software Foundation, Inc.
Written by Mark Mitchell <mark@codesourcery.com>.
Be sure to add an entry to invoke.texi summarizing the parameter. */
-/* 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 threshold ratio between current and hottest structure counts.
We say that if the ratio of the current structure count,
calculated by profiling, to the hottest structure count
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)
+ 400, 0, 0)
/* The single function inlining limit for functions that are
inlined by virtue of -finline-functions (-O3).
DEFPARAM (PARAM_MAX_INLINE_INSNS_AUTO,
"max-inline-insns-auto",
"The maximum number of instructions when automatically inlining",
- 90, 0, 0)
+ 50, 0, 0)
DEFPARAM (PARAM_MAX_INLINE_INSNS_RECURSIVE,
"max-inline-insns-recursive",
"Inline recursively only when the probability of call being executed exceeds the parameter",
10, 0, 0)
+/* Limit of iterations of early inliner. This basically bounds number of
+ nested indirect calls early inliner can resolve. Deeper chains are still
+ handled by late inlining. */
+DEFPARAM (PARAM_EARLY_INLINER_MAX_ITERATIONS,
+ "max-early-inliner-iterations",
+ "The maximum number of nested indirect inlining performed by early inliner",
+ 10, 0, 0)
+
/* Limit the number of expansions created by the variable expansion
optimization to avoid register pressure. */
DEFPARAM (PARAM_MAX_VARIABLE_EXPANSIONS,
"ipcp-unit-growth",
"how much can given compilation unit grow because of the interprocedural constant propagation (in percent)",
10, 0, 0)
-DEFPARAM(PARAM_INLINE_CALL_COST,
- "inline-call-cost",
- "expense of call operation relative to ordinary arithmetic operations",
- 12, 0, 0)
+DEFPARAM(PARAM_EARLY_INLINING_INSNS,
+ "early-inlining-insns",
+ "maximal estimated growth of function body caused by early inlining of single call",
+ 8, 0, 0)
DEFPARAM(PARAM_LARGE_STACK_FRAME,
"large-stack-frame",
"The size of stack frame to be considered large",
"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:
"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 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 blocks in a region to be considered for interblock scheduling",
"max size of conflict table in MB",
1000, 0, 0)
+DEFPARAM (PARAM_IRA_LOOP_RESERVED_REGS,
+ "ira-loop-reserved-regs",
+ "The number of registers in each class kept unused by loop invariant motion",
+ 2, 0, 0)
+
/* Switch initialization conversion will refuse to create arrays that are
bigger than this parameter times the number of switch branches. */
"a switch conversion to take place",
8, 1, 0)
+/* Avoid doing loop invariant motion on very large loops. */
+
+DEFPARAM (PARAM_LOOP_INVARIANT_MAX_BBS_IN_LOOP,
+ "loop-invariant-max-bbs-in-loop",
+ "max basic blocks number in loop for loop invariant motion",
+ 10000, 0, 0)
+
+/* Avoid SLP vectorization of large basic blocks. */
+DEFPARAM (PARAM_SLP_MAX_INSNS_IN_BB,
+ "slp-max-insns-in-bb",
+ "Maximum number of instructions in basic block to be considered for SLP vectorization",
+ 1000, 0, 0)
+
+DEFPARAM (PARAM_MIN_INSN_TO_PREFETCH_RATIO,
+ "min-insn-to-prefetch-ratio",
+ "min. ratio of insns to prefetches to enable prefetching for "
+ "a loop with an unknown trip count",
+ 10, 0, 0)
+
+DEFPARAM (PARAM_PREFETCH_MIN_INSN_TO_MEM_RATIO,
+ "prefetch-min-insn-to-mem-ratio",
+ "min. ratio of insns to mem ops to enable prefetching in a loop",
+ 3, 0, 0)
+
+/* Set minimum insn uid for non-debug insns. */
+
+DEFPARAM (PARAM_MIN_NONDEBUG_INSN_UID,
+ "min-nondebug-insn-uid",
+ "The minimum UID to be used for a nondebug insn",
+ 0, 1, 0)
+
+DEFPARAM (PARAM_IPA_SRA_PTR_GROWTH_FACTOR,
+ "ipa-sra-ptr-growth-factor",
+ "maximum allowed growth of size of new parameters ipa-sra replaces "
+ "a pointer to an aggregate with",
+ 2, 0, 0)
+
/*
Local variables:
mode:c
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