(* Auto-generate ARM Neon intrinsics header file.
- Copyright (C) 2006, 2007, 2009 Free Software Foundation, Inc.
+ Copyright (C) 2006-2013 Free Software Foundation, Inc.
Contributed by CodeSourcery.
This file is part of GCC.
end;
open_braceblock ffmt;
let rec print_lines = function
- [] -> ()
+ [] -> ()
+ | "" :: lines -> print_lines lines
| [line] -> Format.printf "%s" line
- | line::lines -> Format.printf "%s@," line; print_lines lines in
+ | line::lines -> Format.printf "%s@," line ; print_lines lines in
print_lines body;
close_braceblock ffmt;
end_function ffmt
-let return_by_ptr features = List.mem ReturnPtr features
-
let union_string num elts base =
let itype = inttype_for_array num elts in
let iname = string_of_inttype itype
(* Return a tuple of a list of declarations to go at the start of the function,
and a list of statements needed to return THING. *)
-let return arity return_by_ptr thing =
+let return arity thing =
match arity with
Arity0 (ret) | Arity1 (ret, _) | Arity2 (ret, _, _) | Arity3 (ret, _, _, _)
| Arity4 (ret, _, _, _, _) ->
- match ret with
- T_arrayof (num, vec) ->
- if return_by_ptr then
- let sname = string_of_vectype ret in
- [Printf.sprintf "%s __rv;" sname],
- [thing ^ ";"; "return __rv;"]
- else
+ begin match ret with
+ T_arrayof (num, vec) ->
let uname = union_string num vec "__rv" in
[uname ^ ";"], ["__rv.__o = " ^ thing ^ ";"; "return __rv.__i;"]
- | T_void -> [], [thing ^ ";"]
- | _ ->
- [], ["return " ^ (cast_for_return ret) ^ thing ^ ";"]
+ | T_void ->
+ [], [thing ^ ";"]
+ | _ ->
+ [], ["return " ^ (cast_for_return ret) ^ thing ^ ";"]
+ end
+
+let mask_shape_for_shuffle = function
+ All (num, reg) -> All (num, reg)
+ | Pair_result reg -> All (2, reg)
+ | _ -> failwith "mask_for_shuffle"
+
+let mask_elems shuffle shape elttype part =
+ let elem_size = elt_width elttype in
+ let num_elems =
+ match regmap shape 0 with
+ Dreg -> 64 / elem_size
+ | Qreg -> 128 / elem_size
+ | _ -> failwith "mask_elems" in
+ shuffle elem_size num_elems part
+
+(* Return a tuple of a list of declarations 0and a list of statements needed
+ to implement an intrinsic using __builtin_shuffle. SHUFFLE is a function
+ which returns a list of elements suitable for using as a mask. *)
+
+let shuffle_fn shuffle shape arity elttype =
+ let mshape = mask_shape_for_shuffle shape in
+ let masktype = type_for_elt mshape (unsigned_of_elt elttype) 0 in
+ let masktype_str = string_of_vectype masktype in
+ let shuffle_res = type_for_elt mshape elttype 0 in
+ let shuffle_res_str = string_of_vectype shuffle_res in
+ match arity with
+ Arity0 (ret) | Arity1 (ret, _) | Arity2 (ret, _, _) | Arity3 (ret, _, _, _)
+ | Arity4 (ret, _, _, _, _) ->
+ begin match ret with
+ T_arrayof (num, vec) ->
+ let elems1 = mask_elems shuffle mshape elttype `lo
+ and elems2 = mask_elems shuffle mshape elttype `hi in
+ let mask1 = (String.concat ", " (List.map string_of_int elems1))
+ and mask2 = (String.concat ", " (List.map string_of_int elems2)) in
+ let shuf1 = Printf.sprintf
+ "__rv.val[0] = (%s) __builtin_shuffle (__a, __b, (%s) { %s });"
+ shuffle_res_str masktype_str mask1
+ and shuf2 = Printf.sprintf
+ "__rv.val[1] = (%s) __builtin_shuffle (__a, __b, (%s) { %s });"
+ shuffle_res_str masktype_str mask2 in
+ [Printf.sprintf "%s __rv;" (string_of_vectype ret);],
+ [shuf1; shuf2; "return __rv;"]
+ | _ ->
+ let elems = mask_elems shuffle mshape elttype `lo in
+ let mask = (String.concat ", " (List.map string_of_int elems)) in
+ let shuf = Printf.sprintf
+ "return (%s) __builtin_shuffle (__a, (%s) { %s });" shuffle_res_str masktype_str mask in
+ [""],
+ [shuf]
+ end
let rec element_type ctype =
match ctype with
T_arrayof (_, v) -> element_type v
| _ -> ctype
-let params return_by_ptr ps =
+let params ps =
let pdecls = ref [] in
let ptype t p =
match t with
| Arity3 (_, t1, t2, t3) -> [ptype t1 "__a"; ptype t2 "__b"; ptype t3 "__c"]
| Arity4 (_, t1, t2, t3, t4) ->
[ptype t1 "__a"; ptype t2 "__b"; ptype t3 "__c"; ptype t4 "__d"] in
- match ps with
- Arity0 ret | Arity1 (ret, _) | Arity2 (ret, _, _) | Arity3 (ret, _, _, _)
- | Arity4 (ret, _, _, _, _) ->
- if return_by_ptr then
- !pdecls, add_cast (T_ptrto (element_type ret)) "&__rv.val[0]" :: plist
- else
- !pdecls, plist
+ !pdecls, plist
let modify_params features plist =
let is_flipped =
and srcmode = mode_of_elt src shape in
string_of_mode dstmode ^ string_of_mode srcmode
+let get_shuffle features =
+ try
+ match List.find (function Use_shuffle _ -> true | _ -> false) features with
+ Use_shuffle fn -> Some fn
+ | _ -> None
+ with Not_found -> None
+
+let print_feature_test_start features =
+ try
+ match List.find (fun feature ->
+ match feature with Requires_feature _ -> true
+ | Requires_arch _ -> true
+ | _ -> false)
+ features with
+ Requires_feature feature ->
+ Format.printf "#ifdef __ARM_FEATURE_%s@\n" feature
+ | Requires_arch arch ->
+ Format.printf "#if __ARM_ARCH >= %d@\n" arch
+ | _ -> assert false
+ with Not_found -> assert true
+
+let print_feature_test_end features =
+ let feature =
+ List.exists (function Requires_feature x -> true
+ | Requires_arch x -> true
+ | _ -> false) features in
+ if feature then Format.printf "#endif@\n"
+
+
let print_variant opcode features shape name (ctype, asmtype, elttype) =
let bits = infoword_value elttype features in
let modesuf = mode_suffix elttype shape in
- let return_by_ptr = return_by_ptr features in
- let pdecls, paramlist = params return_by_ptr ctype in
- let paramlist' = modify_params features paramlist in
- let paramlist'' = extra_word shape features paramlist' bits in
- let parstr = String.concat ", " paramlist'' in
- let builtin = Printf.sprintf "__builtin_neon_%s%s (%s)"
- (builtin_name features name) modesuf parstr in
- let rdecls, stmts = return ctype return_by_ptr builtin in
+ let pdecls, paramlist = params ctype in
+ let rdecls, stmts =
+ match get_shuffle features with
+ Some shuffle -> shuffle_fn shuffle shape ctype elttype
+ | None ->
+ let paramlist' = modify_params features paramlist in
+ let paramlist'' = extra_word shape features paramlist' bits in
+ let parstr = String.concat ", " paramlist'' in
+ let builtin = Printf.sprintf "__builtin_neon_%s%s (%s)"
+ (builtin_name features name) modesuf parstr in
+ return ctype builtin in
let body = pdecls @ rdecls @ stmts
and fnname = (intrinsic_name name) ^ "_" ^ (string_of_elt elttype) in
- print_function ctype fnname body
+ begin
+ print_feature_test_start features;
+ print_function ctype fnname body;
+ print_feature_test_end features;
+ end
(* When this function processes the element types in the ops table, it rewrites
them in a list of tuples (a,b,c):
"/* ARM NEON intrinsics include file. This file is generated automatically";
" using neon-gen.ml. Please do not edit manually.";
"";
-" Copyright (C) 2006, 2007, 2009 Free Software Foundation, Inc.";
+" Copyright (C) 2006-2013 Free Software Foundation, Inc.";
" Contributed by CodeSourcery.";
"";
" This file is part of GCC.";
projects / platform / upstream / gcc48.git / blobdiff