diff options
| -rw-r--r-- | mppa_k1c/PostpassSchedulingOracle.ml | 24 |
1 files changed, 17 insertions, 7 deletions
diff --git a/mppa_k1c/PostpassSchedulingOracle.ml b/mppa_k1c/PostpassSchedulingOracle.ml index 89ec34e2..7b632144 100644 --- a/mppa_k1c/PostpassSchedulingOracle.ml +++ b/mppa_k1c/PostpassSchedulingOracle.ml @@ -249,14 +249,24 @@ let signed_length (i:int64) = in if (within i interv) then n else f i (n+1) in f i 1 +let unsigned_length (i:int64) = (signed_length i) - 1 + let encode_imm (imm:int64) = - let length = signed_length imm - in if length <= 7 then U6 (* Unsigned -> 1 bit less needed *) - else if length <= 10 then S10 - else if length <= 32 then U27L5 (* Upper 27 Lower 5 is signed *) - else if length <= 37 then U27L10 - else if length <= 64 then E27U27L10 - else failwith @@ sprintf "encode_imm: integer too big! (%Ld)" imm + if (Int64.compare imm Int64.zero < 0) then + let length = signed_length imm + in if length <= 10 then S10 + else if length <= 32 then U27L5 + else if length <= 37 then U27L10 + else if length <= 64 then E27U27L10 + else failwith @@ sprintf "encode_imm: integer too big! (%Ld)" imm + else + let length = unsigned_length imm + in if length <= 6 then U6 + else if length <= 10 then S10 + else if length <= 32 then U27L5 + else if length <= 37 then U27L10 + else if length <= 64 then E27U27L10 + else failwith @@ sprintf "encode_imm: integer too big! (%Ld)" imm (** Resources *) let resource_names = ["ISSUE"; "TINY"; "LITE"; "ALU"; "LSU"; "MAU"; "BCU"; "ACC"; "DATA"; "TCA"; "BRE"; "BRO"; "NOP"] |