diff options
author | Cyril SIX <cyril.six@kalray.eu> | 2020-03-17 15:12:06 +0100 |
---|---|---|
committer | Cyril SIX <cyril.six@kalray.eu> | 2020-03-17 15:12:06 +0100 |
commit | fb43d1078c0b0824132b30d7dd9bfe6b0ac47122 (patch) | |
tree | b51287fed668d9fd06ab98f19dfe454d4c6a27b4 /driver | |
parent | aa2e3d776cb82ce01c4afdbacc52951e60ff2104 (diff) | |
download | compcert-kvx-fb43d1078c0b0824132b30d7dd9bfe6b0ac47122.tar.gz compcert-kvx-fb43d1078c0b0824132b30d7dd9bfe6b0ac47122.zip |
Desactivating branch predictions by default
Diffstat (limited to 'driver')
-rw-r--r-- | driver/Clflags.ml | 2 | ||||
-rw-r--r-- | driver/Driver.ml | 6 |
2 files changed, 6 insertions, 2 deletions
diff --git a/driver/Clflags.ml b/driver/Clflags.ml index 8054eb5b..6986fb96 100644 --- a/driver/Clflags.ml +++ b/driver/Clflags.ml @@ -28,7 +28,7 @@ let option_fconstprop = ref true let option_fcse = ref true let option_fcse2 = ref true let option_fredundancy = ref true -let option_fduplicate = ref 0 +let option_fduplicate = ref (-1) let option_finvertcond = ref true let option_ftracelinearize = ref false let option_fpostpass = ref true diff --git a/driver/Driver.ml b/driver/Driver.ml index 01451e07..388482a0 100644 --- a/driver/Driver.ml +++ b/driver/Driver.ml @@ -201,7 +201,11 @@ Processing options: -fpostpass Perform postpass scheduling (only for K1 architecture) [on] -fpostpass= <optim> Perform postpass scheduling with the specified optimization [list] (<optim>=list: list scheduling, <optim>=ilp: ILP, <optim>=greedy: just packing bundles) - -fduplicate Perform tail duplication to form superblocks on predicted traces + -fduplicate <nb_nodes> Perform tail duplication to form superblocks on predicted traces + nb_nodes control the heuristic deciding to duplicate or not + A value of -1 desactivates the entire pass (including branch prediction) + A value of 0 desactivates the duplication (but activates the branch prediction) + FIXME : this is desactivated by default for now -finvertcond Invert conditions based on predicted paths (to prefer fallthrough). Requires -fduplicate to be also activated [on] -ftracelinearize Linearizes based on the traces identified by duplicate phase |