diff options
Diffstat (limited to 'gcc/params.def')
| -rw-r--r-- | gcc/params.def | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/gcc/params.def b/gcc/params.def index e00e22e3b0d..7be8ddc1322 100644 --- a/gcc/params.def +++ b/gcc/params.def @@ -131,7 +131,25 @@ DEFPARAM(PARAM_MAX_GCSE_PASSES, "max-gcse-passes", "The maximum number of passes to make when doing GCSE", 1) - +/* This is the threshold ratio when to perform partial redundancy + elimination after reload. We perform partial redundancy elimination + when the following holds: + (Redundant load execution count) + ------------------------------- >= GCSE_AFTER_RELOAD_PARTIAL_FRACTION + (Added loads execution count) */ +DEFPARAM(PARAM_GCSE_AFTER_RELOAD_PARTIAL_FRACTION, + "gcse-after-reload-partial-fraction", + "The threshold ratio for performing partial redundancy elimination \ + after reload.", + 3) +/* This is the threshold ratio of the critical edges execution count compared to + the redundant loads execution count that permits performing the load + redundancy elimination in gcse after reload. */ +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) /* This parameter limits the number of insns in a loop that will be unrolled, and by how much the loop is unrolled. |
