cannam@167: (* cannam@167: * Copyright (c) 1997-1999 Massachusetts Institute of Technology cannam@167: * Copyright (c) 2003, 2007-14 Matteo Frigo cannam@167: * Copyright (c) 2003, 2007-14 Massachusetts Institute of Technology cannam@167: * cannam@167: * This program is free software; you can redistribute it and/or modify cannam@167: * it under the terms of the GNU General Public License as published by cannam@167: * the Free Software Foundation; either version 2 of the License, or cannam@167: * (at your option) any later version. cannam@167: * cannam@167: * This program is distributed in the hope that it will be useful, cannam@167: * but WITHOUT ANY WARRANTY; without even the implied warranty of cannam@167: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the cannam@167: * GNU General Public License for more details. cannam@167: * cannam@167: * You should have received a copy of the GNU General Public License cannam@167: * along with this program; if not, write to the Free Software cannam@167: * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA cannam@167: * cannam@167: *) cannam@167: cannam@167: open Expr cannam@167: open List cannam@167: open Printf cannam@167: open Variable cannam@167: open Annotate cannam@167: open Simdmagic cannam@167: open C cannam@167: cannam@167: let realtype = "V" cannam@167: let realtypep = realtype ^ " *" cannam@167: let constrealtype = "const " ^ realtype cannam@167: let constrealtypep = constrealtype ^ " *" cannam@167: let alignment_mod = 2 cannam@167: cannam@167: (* cannam@167: * SIMD C AST unparser cannam@167: *) cannam@167: let foldr_string_concat l = fold_right (^) l "" cannam@167: cannam@167: let rec unparse_by_twiddle nam tw src = cannam@167: sprintf "%s(&(%s),%s)" nam (Variable.unparse tw) (unparse_expr src) cannam@167: cannam@167: and unparse_store dst = function cannam@167: | Times (NaN MULTI_A, x) -> cannam@167: sprintf "STM%d(&(%s),%s,%s,&(%s));\n" cannam@167: !Simdmagic.store_multiple cannam@167: (Variable.unparse dst) (unparse_expr x) cannam@167: (Variable.vstride_of_locative dst) cannam@167: (Variable.unparse_for_alignment alignment_mod dst) cannam@167: | Times (NaN MULTI_B, Plus stuff) -> cannam@167: sprintf "STN%d(&(%s)%s,%s);\n" cannam@167: !Simdmagic.store_multiple cannam@167: (Variable.unparse dst) cannam@167: (List.fold_right (fun x a -> "," ^ (unparse_expr x) ^ a) stuff "") cannam@167: (Variable.vstride_of_locative dst) cannam@167: | src_expr -> cannam@167: sprintf "ST(&(%s),%s,%s,&(%s));\n" cannam@167: (Variable.unparse dst) (unparse_expr src_expr) cannam@167: (Variable.vstride_of_locative dst) cannam@167: (Variable.unparse_for_alignment alignment_mod dst) cannam@167: cannam@167: and unparse_expr = cannam@167: let rec unparse_plus = function cannam@167: | [a] -> unparse_expr a cannam@167: cannam@167: | (Uminus (Times (NaN I, b))) :: c :: d -> op2 "VFNMSI" [b] (c :: d) cannam@167: | c :: (Uminus (Times (NaN I, b))) :: d -> op2 "VFNMSI" [b] (c :: d) cannam@167: | (Uminus (Times (NaN CONJ, b))) :: c :: d -> op2 "VFNMSCONJ" [b] (c :: d) cannam@167: | c :: (Uminus (Times (NaN CONJ, b))) :: d -> op2 "VFNMSCONJ" [b] (c :: d) cannam@167: | (Times (NaN I, b)) :: c :: d -> op2 "VFMAI" [b] (c :: d) cannam@167: | c :: (Times (NaN I, b)) :: d -> op2 "VFMAI" [b] (c :: d) cannam@167: | (Times (NaN CONJ, b)) :: (Uminus c) :: d -> op2 "VFMSCONJ" [b] (c :: d) cannam@167: | (Uminus c) :: (Times (NaN CONJ, b)) :: d -> op2 "VFMSCONJ" [b] (c :: d) cannam@167: | (Times (NaN CONJ, b)) :: c :: d -> op2 "VFMACONJ" [b] (c :: d) cannam@167: | c :: (Times (NaN CONJ, b)) :: d -> op2 "VFMACONJ" [b] (c :: d) cannam@167: | (Times (NaN _, b)) :: (Uminus c) :: d -> failwith "VFMS NaN" cannam@167: | (Uminus c) :: (Times (NaN _, b)) :: d -> failwith "VFMS NaN" cannam@167: cannam@167: | (Uminus (Times (a, b))) :: c :: d -> op3 "VFNMS" a b (c :: d) cannam@167: | c :: (Uminus (Times (a, b))) :: d -> op3 "VFNMS" a b (c :: d) cannam@167: | (Times (a, b)) :: (Uminus c) :: d -> op3 "VFMS" a b (c :: negate d) cannam@167: | (Uminus c) :: (Times (a, b)) :: d -> op3 "VFMS" a b (c :: negate d) cannam@167: | (Times (a, b)) :: c :: d -> op3 "VFMA" a b (c :: d) cannam@167: | c :: (Times (a, b)) :: d -> op3 "VFMA" a b (c :: d) cannam@167: cannam@167: | (Uminus a :: b) -> op2 "VSUB" b [a] cannam@167: | (b :: Uminus a :: c) -> op2 "VSUB" (b :: c) [a] cannam@167: | (a :: b) -> op2 "VADD" [a] b cannam@167: | [] -> failwith "unparse_plus" cannam@167: and op3 nam a b c = cannam@167: nam ^ "(" ^ (unparse_expr a) ^ ", " ^ (unparse_expr b) ^ ", " ^ cannam@167: (unparse_plus c) ^ ")" cannam@167: and op2 nam a b = cannam@167: nam ^ "(" ^ (unparse_plus a) ^ ", " ^ (unparse_plus b) ^ ")" cannam@167: and op1 nam a = cannam@167: nam ^ "(" ^ (unparse_expr a) ^ ")" cannam@167: and negate = function cannam@167: | [] -> [] cannam@167: | (Uminus x) :: y -> x :: negate y cannam@167: | x :: y -> (Uminus x) :: negate y cannam@167: cannam@167: in function cannam@167: | CTimes(Load tw, src) cannam@167: when Variable.is_constant tw && !Magic.generate_bytw -> cannam@167: unparse_by_twiddle "BYTW" tw src cannam@167: | CTimesJ(Load tw, src) cannam@167: when Variable.is_constant tw && !Magic.generate_bytw -> cannam@167: unparse_by_twiddle "BYTWJ" tw src cannam@167: | Load v when is_locative(v) -> cannam@167: sprintf "LD(&(%s), %s, &(%s))" (Variable.unparse v) cannam@167: (Variable.vstride_of_locative v) cannam@167: (Variable.unparse_for_alignment alignment_mod v) cannam@167: | Load v when is_constant(v) -> sprintf "LDW(&(%s))" (Variable.unparse v) cannam@167: | Load v -> Variable.unparse v cannam@167: | Num n -> sprintf "LDK(%s)" (Number.to_konst n) cannam@167: | NaN n -> failwith "NaN in unparse_expr" cannam@167: | Plus [] -> "0.0 /* bug */" cannam@167: | Plus [a] -> " /* bug */ " ^ (unparse_expr a) cannam@167: | Plus a -> unparse_plus a cannam@167: | Times(NaN I,b) -> op1 "VBYI" b cannam@167: | Times(NaN CONJ,b) -> op1 "VCONJ" b cannam@167: | Times(a,b) -> cannam@167: sprintf "VMUL(%s, %s)" (unparse_expr a) (unparse_expr b) cannam@167: | CTimes(a,Times(NaN I, b)) -> cannam@167: sprintf "VZMULI(%s, %s)" (unparse_expr a) (unparse_expr b) cannam@167: | CTimes(a,b) -> cannam@167: sprintf "VZMUL(%s, %s)" (unparse_expr a) (unparse_expr b) cannam@167: | CTimesJ(a,Times(NaN I, b)) -> cannam@167: sprintf "VZMULIJ(%s, %s)" (unparse_expr a) (unparse_expr b) cannam@167: | CTimesJ(a,b) -> cannam@167: sprintf "VZMULJ(%s, %s)" (unparse_expr a) (unparse_expr b) cannam@167: | Uminus a when !Magic.vneg -> op1 "VNEG" a cannam@167: | Uminus a -> failwith "SIMD Uminus" cannam@167: | _ -> failwith "unparse_expr" cannam@167: cannam@167: and unparse_decl x = C.unparse_decl x cannam@167: cannam@167: and unparse_ast ast = cannam@167: let rec unparse_assignment = function cannam@167: | Assign (v, x) when Variable.is_locative v -> cannam@167: unparse_store v x cannam@167: | Assign (v, x) -> cannam@167: (Variable.unparse v) ^ " = " ^ (unparse_expr x) ^ ";\n" cannam@167: cannam@167: and unparse_annotated force_bracket = cannam@167: let rec unparse_code = function cannam@167: | ADone -> "" cannam@167: | AInstr i -> unparse_assignment i cannam@167: | ASeq (a, b) -> cannam@167: (unparse_annotated false a) ^ (unparse_annotated false b) cannam@167: and declare_variables l = cannam@167: let rec uvar = function cannam@167: [] -> failwith "uvar" cannam@167: | [v] -> (Variable.unparse v) ^ ";\n" cannam@167: | a :: b -> (Variable.unparse a) ^ ", " ^ (uvar b) cannam@167: in let rec vvar l = cannam@167: let s = if !Magic.compact then 15 else 1 in cannam@167: if (List.length l <= s) then cannam@167: match l with cannam@167: [] -> "" cannam@167: | _ -> realtype ^ " " ^ (uvar l) cannam@167: else cannam@167: (vvar (Util.take s l)) ^ (vvar (Util.drop s l)) cannam@167: in vvar (List.filter Variable.is_temporary l) cannam@167: in function cannam@167: Annotate (_, _, decl, _, code) -> cannam@167: if (not force_bracket) && (Util.null decl) then cannam@167: unparse_code code cannam@167: else "{\n" ^ cannam@167: (declare_variables decl) ^ cannam@167: (unparse_code code) ^ cannam@167: "}\n" cannam@167: cannam@167: in match ast with cannam@167: | Asch a -> (unparse_annotated true a) cannam@167: | Return x -> "return " ^ unparse_ast x ^ ";" cannam@167: | Simd_leavefun -> "VLEAVE();" cannam@167: | For (a, b, c, d) -> cannam@167: "for (" ^ cannam@167: unparse_ast a ^ "; " ^ unparse_ast b ^ "; " ^ unparse_ast c cannam@167: ^ ")" ^ unparse_ast d cannam@167: | If (a, d) -> cannam@167: "if (" ^ cannam@167: unparse_ast a cannam@167: ^ ")" ^ unparse_ast d cannam@167: | Block (d, s) -> cannam@167: if (s == []) then "" cannam@167: else cannam@167: "{\n" ^ cannam@167: foldr_string_concat (map unparse_decl d) ^ cannam@167: foldr_string_concat (map unparse_ast s) ^ cannam@167: "}\n" cannam@167: | x -> C.unparse_ast x cannam@167: cannam@167: and unparse_function = function cannam@167: Fcn (typ, name, args, body) -> cannam@167: let rec unparse_args = function cannam@167: [Decl (a, b)] -> a ^ " " ^ b cannam@167: | (Decl (a, b)) :: s -> a ^ " " ^ b ^ ", " cannam@167: ^ unparse_args s cannam@167: | [] -> "" cannam@167: | _ -> failwith "unparse_function" cannam@167: in cannam@167: (typ ^ " " ^ name ^ "(" ^ unparse_args args ^ ")\n" ^ cannam@167: unparse_ast body) cannam@167: cannam@167: let extract_constants f = cannam@167: let constlist = flatten (map expr_to_constants (C.ast_to_expr_list f)) cannam@167: in map cannam@167: (fun n -> cannam@167: Tdecl cannam@167: ("DVK(" ^ (Number.to_konst n) ^ ", " ^ (Number.to_string n) ^ cannam@167: ");\n")) cannam@167: (unique_constants constlist)