diff options
Diffstat (limited to 'gcc/params.def')
| -rw-r--r-- | gcc/params.def | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/gcc/params.def b/gcc/params.def index 767ecd9e512..ada50f67093 100644 --- a/gcc/params.def +++ b/gcc/params.def @@ -225,6 +225,21 @@ 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) + +/* 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) + /* This parameter limits the number of insns in a loop that will be unrolled, and by how much the loop is unrolled. |