diff options
Diffstat (limited to 'gcc/params.def')
| -rw-r--r-- | gcc/params.def | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/gcc/params.def b/gcc/params.def index 7bb97b1ab4a..28e7c2eb5f5 100644 --- a/gcc/params.def +++ b/gcc/params.def @@ -229,6 +229,14 @@ DEFPARAM(PARAM_MAX_UNSWITCH_LEVEL, "The maximum number of unswitchings in a single loop", 3) +/* This parameter limits the size of loop for that we attempt to + do doloop optimalization. We set this quite high so that we do + not punish unrolled loops. */ +DEFPARAM(PARAM_MAX_DOLOOP_INSNS, + "max-doloop-insns", + "The maximum number of instructions of loop processed by doloop optimization", + 1000) + DEFPARAM(HOT_BB_COUNT_FRACTION, "hot-bb-count-fraction", "Select fraction of the maximal count of repetitions of basic block in \ @@ -281,6 +289,13 @@ DEFPARAM(PARAM_MAX_CSE_PATH_LENGTH, "The maximum length of path considered in cse", 10) +/* The cost of expression in loop invariant motion to be considered + expensive. */ +DEFPARAM(PARAM_LIM_EXPENSIVE, + "lim-expensive", + "The minimum cost of expensive expression in the loop invariant motion", + 20) + /* 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, @@ -297,8 +312,10 @@ DEFPARAM(PARAM_MAX_CSELIB_MEMORY_LOCATIONS, # define GGC_MIN_EXPAND_DEFAULT 0 # define GGC_MIN_HEAPSIZE_DEFAULT 0 #else -# define GGC_MIN_EXPAND_DEFAULT 30 -# define GGC_MIN_HEAPSIZE_DEFAULT 4096 +/* 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, |