1(* Auto-generate ARM Neon intrinsics tests. 2 Copyright (C) 2006-2013 Free Software Foundation, Inc. 3 Contributed by CodeSourcery. 4 5 This file is part of GCC. 6 7 GCC is free software; you can redistribute it and/or modify it under 8 the terms of the GNU General Public License as published by the Free 9 Software Foundation; either version 3, or (at your option) any later 10 version. 11 12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 13 WARRANTY; without even the implied warranty of MERCHANTABILITY or 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15 for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with GCC; see the file COPYING3. If not see 19 <http://www.gnu.org/licenses/>. 20 21 This is an O'Caml program. The O'Caml compiler is available from: 22 23 http://caml.inria.fr/ 24 25 Or from your favourite OS's friendly packaging system. Tested with version 26 3.09.2, though other versions will probably work too. 27 28 Compile with: 29 ocamlc -c neon.ml 30 ocamlc -o neon-testgen neon.cmo neon-testgen.ml 31 32 Run with: 33 cd /path/to/gcc/testsuite/gcc.target/arm/neon 34 /path/to/neon-testgen 35*) 36 37open Neon 38 39type c_type_flags = Pointer | Const 40 41(* Open a test source file. *) 42let open_test_file dir name = 43 try 44 open_out (dir ^ "/" ^ name ^ ".c") 45 with Sys_error str -> 46 failwith ("Could not create test source file " ^ name ^ ": " ^ str) 47 48(* Emit prologue code to a test source file. *) 49let emit_prologue chan test_name effective_target = 50 Printf.fprintf chan "/* Test the `%s' ARM Neon intrinsic. */\n" test_name; 51 Printf.fprintf chan "/* This file was autogenerated by neon-testgen. */\n\n"; 52 Printf.fprintf chan "/* { dg-do assemble } */\n"; 53 Printf.fprintf chan "/* { dg-require-effective-target %s_ok } */\n" 54 effective_target; 55 Printf.fprintf chan "/* { dg-options \"-save-temps -O0\" } */\n"; 56 Printf.fprintf chan "/* { dg-add-options %s } */\n" effective_target; 57 Printf.fprintf chan "\n#include \"arm_neon.h\"\n\n"; 58 Printf.fprintf chan "void test_%s (void)\n{\n" test_name 59 60(* Emit declarations of local variables that are going to be passed 61 to an intrinsic, together with one to take a returned value if needed. *) 62let emit_automatics chan c_types features = 63 let emit () = 64 ignore ( 65 List.fold_left (fun arg_number -> fun (flags, ty) -> 66 let pointer_bit = 67 if List.mem Pointer flags then "*" else "" 68 in 69 (* Const arguments to builtins are directly 70 written in as constants. *) 71 if not (List.mem Const flags) then 72 Printf.fprintf chan " %s %sarg%d_%s;\n" 73 ty pointer_bit arg_number ty; 74 arg_number + 1) 75 0 (List.tl c_types)) 76 in 77 match c_types with 78 (_, return_ty) :: tys -> 79 if return_ty <> "void" then begin 80 (* The intrinsic returns a value. We need to do explict register 81 allocation for vget_low tests or they fail because of copy 82 elimination. *) 83 ((if List.mem Fixed_vector_reg features then 84 Printf.fprintf chan " register %s out_%s asm (\"d18\");\n" 85 return_ty return_ty 86 else if List.mem Fixed_core_reg features then 87 Printf.fprintf chan " register %s out_%s asm (\"r0\");\n" 88 return_ty return_ty 89 else 90 Printf.fprintf chan " %s out_%s;\n" return_ty return_ty); 91 emit ()) 92 end else 93 (* The intrinsic does not return a value. *) 94 emit () 95 | _ -> assert false 96 97(* Emit code to call an intrinsic. *) 98let emit_call chan const_valuator c_types name elt_ty = 99 (if snd (List.hd c_types) <> "void" then 100 Printf.fprintf chan " out_%s = " (snd (List.hd c_types)) 101 else 102 Printf.fprintf chan " "); 103 Printf.fprintf chan "%s_%s (" (intrinsic_name name) (string_of_elt elt_ty); 104 let print_arg chan arg_number (flags, ty) = 105 (* If the argument is of const type, then directly write in the 106 constant now. *) 107 if List.mem Const flags then 108 match const_valuator with 109 None -> 110 if List.mem Pointer flags then 111 Printf.fprintf chan "0" 112 else 113 Printf.fprintf chan "1" 114 | Some f -> Printf.fprintf chan "%s" (string_of_int (f arg_number)) 115 else 116 Printf.fprintf chan "arg%d_%s" arg_number ty 117 in 118 let rec print_args arg_number tys = 119 match tys with 120 [] -> () 121 | [ty] -> print_arg chan arg_number ty 122 | ty::tys -> 123 print_arg chan arg_number ty; 124 Printf.fprintf chan ", "; 125 print_args (arg_number + 1) tys 126 in 127 print_args 0 (List.tl c_types); 128 Printf.fprintf chan ");\n" 129 130(* Emit epilogue code to a test source file. *) 131let emit_epilogue chan features regexps = 132 let no_op = List.exists (fun feature -> feature = No_op) features in 133 Printf.fprintf chan "}\n\n"; 134 (if not no_op then 135 List.iter (fun regexp -> 136 Printf.fprintf chan 137 "/* { dg-final { scan-assembler \"%s\" } } */\n" regexp) 138 regexps 139 else 140 () 141 ); 142 Printf.fprintf chan "/* { dg-final { cleanup-saved-temps } } */\n" 143 144(* Check a list of C types to determine which ones are pointers and which 145 ones are const. *) 146let check_types tys = 147 let tys' = 148 List.map (fun ty -> 149 let len = String.length ty in 150 if len > 2 && String.get ty (len - 2) = ' ' 151 && String.get ty (len - 1) = '*' 152 then ([Pointer], String.sub ty 0 (len - 2)) 153 else ([], ty)) tys 154 in 155 List.map (fun (flags, ty) -> 156 if String.length ty > 6 && String.sub ty 0 6 = "const " 157 then (Const :: flags, String.sub ty 6 ((String.length ty) - 6)) 158 else (flags, ty)) tys' 159 160(* Work out what the effective target should be. *) 161let effective_target features = 162 try 163 match List.find (fun feature -> 164 match feature with Requires_feature _ -> true 165 | Requires_arch _ -> true 166 | _ -> false) 167 features with 168 Requires_feature "FMA" -> "arm_neonv2" 169 | Requires_arch 8 -> "arm_v8_neon" 170 | _ -> assert false 171 with Not_found -> "arm_neon" 172 173(* Given an intrinsic shape, produce a regexp that will match 174 the right-hand sides of instructions generated by an intrinsic of 175 that shape. *) 176let rec analyze_shape shape = 177 let rec n_things n thing = 178 match n with 179 0 -> [] 180 | n -> thing :: (n_things (n - 1) thing) 181 in 182 let rec analyze_shape_elt elt = 183 match elt with 184 Dreg -> "\\[dD\\]\\[0-9\\]+" 185 | Qreg -> "\\[qQ\\]\\[0-9\\]+" 186 | Corereg -> "\\[rR\\]\\[0-9\\]+" 187 | Immed -> "#\\[0-9\\]+" 188 | VecArray (1, elt) -> 189 let elt_regexp = analyze_shape_elt elt in 190 "((\\\\\\{" ^ elt_regexp ^ "\\\\\\})|(" ^ elt_regexp ^ "))" 191 | VecArray (n, elt) -> 192 let elt_regexp = analyze_shape_elt elt in 193 let alt1 = elt_regexp ^ "-" ^ elt_regexp in 194 let alt2 = commas (fun x -> x) (n_things n elt_regexp) "" in 195 "\\\\\\{((" ^ alt1 ^ ")|(" ^ alt2 ^ "))\\\\\\}" 196 | (PtrTo elt | CstPtrTo elt) -> 197 "\\\\\\[" ^ (analyze_shape_elt elt) ^ "\\(:\\[0-9\\]+\\)?\\\\\\]" 198 | Element_of_dreg -> (analyze_shape_elt Dreg) ^ "\\\\\\[\\[0-9\\]+\\\\\\]" 199 | Element_of_qreg -> (analyze_shape_elt Qreg) ^ "\\\\\\[\\[0-9\\]+\\\\\\]" 200 | All_elements_of_dreg -> (analyze_shape_elt Dreg) ^ "\\\\\\[\\\\\\]" 201 | Alternatives (elts) -> "(" ^ (String.concat "|" (List.map analyze_shape_elt elts)) ^ ")" 202 in 203 match shape with 204 All (n, elt) -> commas analyze_shape_elt (n_things n elt) "" 205 | Long -> (analyze_shape_elt Qreg) ^ ", " ^ (analyze_shape_elt Dreg) ^ 206 ", " ^ (analyze_shape_elt Dreg) 207 | Long_noreg elt -> (analyze_shape_elt elt) ^ ", " ^ (analyze_shape_elt elt) 208 | Wide -> (analyze_shape_elt Qreg) ^ ", " ^ (analyze_shape_elt Qreg) ^ 209 ", " ^ (analyze_shape_elt Dreg) 210 | Wide_noreg elt -> analyze_shape (Long_noreg elt) 211 | Narrow -> (analyze_shape_elt Dreg) ^ ", " ^ (analyze_shape_elt Qreg) ^ 212 ", " ^ (analyze_shape_elt Qreg) 213 | Use_operands elts -> commas analyze_shape_elt (Array.to_list elts) "" 214 | By_scalar Dreg -> 215 analyze_shape (Use_operands [| Dreg; Dreg; Element_of_dreg |]) 216 | By_scalar Qreg -> 217 analyze_shape (Use_operands [| Qreg; Qreg; Element_of_dreg |]) 218 | By_scalar _ -> assert false 219 | Wide_lane -> 220 analyze_shape (Use_operands [| Qreg; Dreg; Element_of_dreg |]) 221 | Wide_scalar -> 222 analyze_shape (Use_operands [| Qreg; Dreg; Element_of_dreg |]) 223 | Pair_result elt -> 224 let elt_regexp = analyze_shape_elt elt in 225 elt_regexp ^ ", " ^ elt_regexp 226 | Unary_scalar _ -> "FIXME Unary_scalar" 227 | Binary_imm elt -> analyze_shape (Use_operands [| elt; elt; Immed |]) 228 | Narrow_imm -> analyze_shape (Use_operands [| Dreg; Qreg; Immed |]) 229 | Long_imm -> analyze_shape (Use_operands [| Qreg; Dreg; Immed |]) 230 231(* Generate tests for one intrinsic. *) 232let test_intrinsic dir opcode features shape name munge elt_ty = 233 (* Open the test source file. *) 234 let test_name = name ^ (string_of_elt elt_ty) in 235 let chan = open_test_file dir test_name in 236 (* Work out what argument and return types the intrinsic has. *) 237 let c_arity, new_elt_ty = munge shape elt_ty in 238 let c_types = check_types (strings_of_arity c_arity) in 239 (* Extract any constant valuator (a function specifying what constant 240 values are to be written into the intrinsic call) from the features 241 list. *) 242 let const_valuator = 243 try 244 match (List.find (fun feature -> match feature with 245 Const_valuator _ -> true 246 | _ -> false) features) with 247 Const_valuator f -> Some f 248 | _ -> assert false 249 with Not_found -> None 250 in 251 (* Work out what instruction name(s) to expect. *) 252 let insns = get_insn_names features name in 253 let no_suffix = (new_elt_ty = NoElts) in 254 let insns = 255 if no_suffix then insns 256 else List.map (fun insn -> 257 let suffix = string_of_elt_dots new_elt_ty in 258 insn ^ "\\." ^ suffix) insns 259 in 260 (* Construct a regexp to match against the expected instruction name(s). *) 261 let insn_regexp = 262 match insns with 263 [] -> assert false 264 | [insn] -> insn 265 | _ -> 266 let rec calc_regexp insns cur_regexp = 267 match insns with 268 [] -> cur_regexp 269 | [insn] -> cur_regexp ^ "(" ^ insn ^ "))" 270 | insn::insns -> calc_regexp insns (cur_regexp ^ "(" ^ insn ^ ")|") 271 in calc_regexp insns "(" 272 in 273 (* Construct regexps to match against the instructions that this 274 intrinsic expands to. Watch out for any writeback character and 275 comments after the instruction. *) 276 let regexps = List.map (fun regexp -> insn_regexp ^ "\\[ \t\\]+" ^ regexp ^ 277 "!?\\(\\[ \t\\]+@\\[a-zA-Z0-9 \\]+\\)?\\n") 278 (analyze_all_shapes features shape analyze_shape) 279 in 280 let effective_target = effective_target features 281 in 282 (* Emit file and function prologues. *) 283 emit_prologue chan test_name effective_target; 284 (* Emit local variable declarations. *) 285 emit_automatics chan c_types features; 286 Printf.fprintf chan "\n"; 287 (* Emit the call to the intrinsic. *) 288 emit_call chan const_valuator c_types name elt_ty; 289 (* Emit the function epilogue and the DejaGNU scan-assembler directives. *) 290 emit_epilogue chan features regexps; 291 (* Close the test file. *) 292 close_out chan 293 294(* Generate tests for one element of the "ops" table. *) 295let test_intrinsic_group dir (opcode, features, shape, name, munge, types) = 296 List.iter (test_intrinsic dir opcode features shape name munge) types 297 298(* Program entry point. *) 299let _ = 300 let directory = if Array.length Sys.argv <> 1 then Sys.argv.(1) else "." in 301 List.iter (test_intrinsic_group directory) (reinterp @ ops) 302 303