diff options
Diffstat (limited to 'riscV/OpWeights.ml')
| -rw-r--r-- | riscV/OpWeights.ml | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/riscV/OpWeights.ml b/riscV/OpWeights.ml new file mode 100644 index 00000000..75a913c6 --- /dev/null +++ b/riscV/OpWeights.ml @@ -0,0 +1,161 @@ +open Op;; +open PrepassSchedulingOracleDeps;; + +module Rocket = + struct + (* Attempt at modeling the Rocket core *) + + let resource_bounds = [| 1 |];; + let nr_non_pipelined_units = 1;; (* divider *) + + let latency_of_op (op : operation) (nargs : int) = + match op with + | Omul | Omulhs | Omulhu + | Omull | Omullhs | Omullhu -> 4 + + | Onegf -> 1 (*r [rd = - r1] *) + | Oabsf (*r [rd = abs(r1)] *) + | Oaddf (*r [rd = r1 + r2] *) + | Osubf (*r [rd = r1 - r2] *) + | Omulf -> 6 (*r [rd = r1 * r2] *) + | Onegfs -> 1 (*r [rd = - r1] *) + | Oabsfs (*r [rd = abs(r1)] *) + | Oaddfs (*r [rd = r1 + r2] *) + | Osubfs (*r [rd = r1 - r2] *) + | Omulfs -> 4 (*r [rd = r1 * r2] *) + | Osingleoffloat (*r [rd] is [r1] truncated to single-precision float *) + | Ofloatofsingle -> 4 (*r [rd] is [r1] extended to double-precision float *) + (*c Conversions between int and float: *) + | Ointoffloat (*r [rd = signed_int_of_float64(r1)] *) + | Ointuoffloat (*r [rd = unsigned_int_of_float64(r1)] *) + | Ofloatofint (*r [rd = float64_of_signed_int(r1)] *) + | Ofloatofintu -> 6 (*r [rd = float64_of_unsigned_int(r1)] *) + | Ointofsingle (*r [rd = signed_int_of_float32(r1)] *) + | Ointuofsingle (*r [rd = unsigned_int_of_float32(r1)] *) + | Osingleofint (*r [rd = float32_of_signed_int(r1)] *) + | Osingleofintu -> 4 (*r [rd = float32_of_unsigned_int(r1)] *) + | Olongoffloat (*r [rd = signed_long_of_float64(r1)] *) + | Olonguoffloat (*r [rd = unsigned_long_of_float64(r1)] *) + | Ofloatoflong (*r [rd = float64_of_signed_long(r1)] *) + | Ofloatoflongu -> 6 (*r [rd = float64_of_unsigned_long(r1)] *) + | Olongofsingle (*r [rd = signed_long_of_float32(r1)] *) + | Olonguofsingle (*r [rd = unsigned_long_of_float32(r1)] *) + | Osingleoflong (*r [rd = float32_of_signed_long(r1)] *) + | Osingleoflongu -> 4 (*r [rd = float32_of_unsigned_int(r1)] *) + + | Odiv | Odivu | Odivl | Odivlu -> 16 + | Odivfs -> 35 + | Odivf -> 50 + + | Ocmp cond -> + (match cond with + | Ccomp _ + | Ccompu _ + | Ccompimm _ + | Ccompuimm _ + | Ccompl _ + | Ccomplu _ + | Ccomplimm _ + | Ccompluimm _ -> 1 + | Ccompf _ + | Cnotcompf _ -> 6 + | Ccompfs _ + | Cnotcompfs _ -> 4) + | _ -> 1;; + + let resources_of_op (op : operation) (nargs : int) = resource_bounds;; + + let non_pipelined_resources_of_op (op : operation) (nargs : int) = + match op with + | Odiv | Odivu -> [| 29 |] + | Odivfs -> [| 20 |] + | Odivl | Odivlu | Odivf -> [| 50 |] + | _ -> [| -1 |];; + + let resources_of_cond (cond : condition) (nargs : int) = resource_bounds;; + + let latency_of_load trap chunk (addr : addressing) (nargs : int) = 3;; + let latency_of_call _ _ = 6;; + + let resources_of_load trap chunk addressing nargs = resource_bounds;; + + let resources_of_store chunk addressing nargs = resource_bounds;; + + let resources_of_call _ _ = resource_bounds;; + let resources_of_builtin _ = resource_bounds;; + end;; + +module SweRV_EH1 = + struct + (* Attempt at modeling SweRV EH1 + [| issues ; LSU ; multiplier |] *) + let resource_bounds = [| 2 ; 1; 1 |];; + let nr_non_pipelined_units = 1;; (* divider *) + + let latency_of_op (op : operation) (nargs : int) = + match op with + | Omul | Omulhs | Omulhu + | Omull | Omullhs | Omullhu -> 3 + | Odiv | Odivu | Odivl | Odivlu -> 16 + | _ -> 1;; + + let resources_of_op (op : operation) (nargs : int) = + match op with + | Omul | Omulhs | Omulhu + | Omull | Omullhs | Omullhu -> [| 1 ; 0 ; 1 |] + | Odiv | Odivu | Odivl | Odivlu -> [| 0 ; 0; 0 |] + | _ -> [| 1; 0; 0; 0 |];; + + let non_pipelined_resources_of_op (op : operation) (nargs : int) = + match op with + | Odiv | Odivu -> [| 29 |] + | Odivfs -> [| 20 |] + | Odivl | Odivlu | Odivf -> [| 50 |] + | _ -> [| -1 |];; + + let resources_of_cond (cond : condition) (nargs : int) = [| 1; 0; 0 |];; + + let latency_of_load trap chunk (addr : addressing) (nargs : int) = 3;; + let latency_of_call _ _ = 6;; + + let resources_of_load trap chunk addressing nargs = [| 1; 1; 0 |];; + + let resources_of_store chunk addressing nargs = [| 1; 1; 0 |];; + + let resources_of_call _ _ = resource_bounds;; + let resources_of_builtin _ = resource_bounds;; + end;; + +let get_opweights () : opweights = + match !Clflags.option_mtune with + | "rocket" | "" -> + { + pipelined_resource_bounds = Rocket.resource_bounds; + nr_non_pipelined_units = Rocket.nr_non_pipelined_units; + latency_of_op = Rocket.latency_of_op; + resources_of_op = Rocket.resources_of_op; + non_pipelined_resources_of_op = Rocket.non_pipelined_resources_of_op; + latency_of_load = Rocket.latency_of_load; + resources_of_load = Rocket.resources_of_load; + resources_of_store = Rocket.resources_of_store; + resources_of_cond = Rocket.resources_of_cond; + latency_of_call = Rocket.latency_of_call; + resources_of_call = Rocket.resources_of_call; + resources_of_builtin = Rocket.resources_of_builtin + } + | "SweRV_EH1" | "EH1" -> + { + pipelined_resource_bounds = SweRV_EH1.resource_bounds; + nr_non_pipelined_units = SweRV_EH1.nr_non_pipelined_units; + latency_of_op = SweRV_EH1.latency_of_op; + resources_of_op = SweRV_EH1.resources_of_op; + non_pipelined_resources_of_op = SweRV_EH1.non_pipelined_resources_of_op; + latency_of_load = SweRV_EH1.latency_of_load; + resources_of_load = SweRV_EH1.resources_of_load; + resources_of_store = SweRV_EH1.resources_of_store; + resources_of_cond = SweRV_EH1.resources_of_cond; + latency_of_call = SweRV_EH1.latency_of_call; + resources_of_call = SweRV_EH1.resources_of_call; + resources_of_builtin = SweRV_EH1.resources_of_builtin + } + | xxx -> failwith (Printf.sprintf "unknown -mtune: %s" xxx);; |