nsz Git - libfirm/blob - ir/be/scripts/generate_new_opcodes.pl

   1 #!/usr/bin/perl -w
   2
   3 # This script generates the C code which creates the irop's and
   4 # their coresponding node constructors for all operations in a given spec
   5 # so they can be used as normal firm nodes.
   6 # Creation: 2005/10/19
   7 # $Id$
   8
   9 use strict;
  10 use Data::Dumper;
  11
  12 my $specfile   = $ARGV[0];
  13 my $target_dir = $ARGV[1];
  14 my $state      = 1;
  15 my $cur_op     = "";
  16 my $line_nr    = 0;
  17
  18 our $arch;
  19 our %nodes;
  20
  21 # include spec file
  22
  23 my $return;
  24
  25 no strict "subs";
  26 unless ($return = do $specfile) {
  27         warn "couldn't parse $specfile: $@" if $@;
  28         warn "couldn't do $specfile: $!"    unless defined $return;
  29         warn "couldn't run $specfile"       unless $return;
  30 }
  31 use strict "subs";
  32
  33 my $target_c = $target_dir."/gen_".$arch."_new_nodes.c.inl";
  34 my $target_h = $target_dir."/gen_".$arch."_new_nodes.h";
  35
  36 #print Dumper(%nodes);
  37
  38 # create c code file from specs
  39
  40 my @obst_opvar;       # stack for the "ir_op *op_<arch>_<op-name> = NULL;" statements
  41 my @obst_get_opvar;   # stack for the get_op_<arch>_<op-name>() functions
  42 my @obst_constructor; # stack for node constructor functions
  43 my @obst_new_irop;    # stack for the new_ir_op calls
  44 my @obst_header;      # stack for function prototypes
  45 my @obst_is_archirn;  # stack for the is_$arch_irn() function
  46 my @obst_cmp_attr;    # stack for the compare attribute functions
  47 my $orig_op;
  48 my $arity;
  49 my $cmp_attr_func;
  50 my $temp;
  51 my $n_opcodes = 2;    # we have two additional border opcodes (lowest/highest)
  52
  53 push(@obst_header, "void ".$arch."_create_opcodes(void);\n");
  54
  55 foreach my $op (keys(%nodes)) {
  56         my %n = %{ $nodes{"$op"} };
  57
  58         # determine arity from in requirements
  59         $arity = 0;
  60         if (exists($n{"reg_req"}) && exists($n{"reg_req"}{"in"})) {
  61                 $arity = scalar(@{ $n{"reg_req"}{"in"} });
  62         }
  63
  64         $orig_op = $op;
  65         $op      = $arch."_".$op;
  66         $temp    = "";
  67
  68         push(@obst_opvar, "ir_op *op_$op = NULL;\n");
  69         push(@obst_get_opvar, "ir_op *get_op_$op(void)         { return op_$op; }\n");
  70         push(@obst_get_opvar, "int    is_$op(const ir_node *n) { return get_irn_op(n) == op_$op; }\n\n");
  71
  72         push(@obst_is_archirn, "is_$op(node)");
  73
  74         push(@obst_header, "ir_op *get_op_$op(void);\n");
  75         push(@obst_header, "int is_$op(const ir_node *n);\n");
  76
  77         $cmp_attr_func = 0;
  78         # create compare attribute function if needed
  79         if (exists($n{"cmp_attr"})) {
  80                 push(@obst_cmp_attr, "static int cmp_attr_$op(ir_node *a, ir_node *b) {\n");
  81                 push(@obst_cmp_attr, "  $arch\_attr_t *attr_a = get_$arch\_attr(a);\n");
  82                 push(@obst_cmp_attr, "  $arch\_attr_t *attr_b = get_$arch\_attr(b);\n");
  83                 push(@obst_cmp_attr, $n{"cmp_attr"});
  84                 push(@obst_cmp_attr, "}\n\n");
  85
  86                 $cmp_attr_func = 1;
  87         }
  88
  89         if (exists($n{"rd_constructor"}) && $n{"rd_constructor"} =~ /^NONE$/i) {
  90                 # we explicitly skip the constructor if the specification entry says NONE
  91         }
  92         else {
  93                 $n{"comment"} = "construct $op" if(!exists($n{"comment"}));
  94                 $n{"comment"} =~ s/^"|"$//g;    # remove "
  95                 $n{"comment"} = "/* ".$n{"comment"}." */\n";
  96                 push(@obst_constructor, $n{"comment"});
  97
  98                 # create constructor head
  99                 my $complete_args = "";
 100                 my $arg_names     = "";
 101                 $temp             = "";
 102
 103                 $temp = "ir_node *new_rd_$op(dbg_info *db, ir_graph *irg, ir_node *block";
 104                 if (!exists($n{"args"}) || $n{"args"} =~ /^DEFAULT$/i) { # default args
 105                         if ($arity !~ /^\d+$/) {
 106                                 print "DEFAULT args require numeric arity (0, 1, 2, ...)! Ignoring op $orig_op!\n";
 107                                 next;
 108                         }
 109                         for (my $i = 1; $i <= $arity; $i++) {
 110                                 $complete_args .= ", ir_node *op".$i;
 111                                 $arg_names     .= ", op".$i;
 112                         }
 113                         $complete_args .= ", ir_mode *mode";
 114                         $arg_names     .= ", mode";
 115                 }
 116                 else { # user defined args
 117                         for my $href (@{ $n{"args"} }) {
 118                                 $href->{"type"} .= " " if ($href->{"type"} !~ / [*]?$/); # put a space between name and type if there is none at the end
 119                                 $complete_args  .= ", ".$href->{"type"}.$href->{"name"};
 120                                 $arg_names      .= ", ".$href->{"name"};
 121                         }
 122                 }
 123                 $complete_args = substr($complete_args, 2);
 124                 $temp .= ", $complete_args)";
 125                 push(@obst_constructor, $temp." {\n");
 126                 push(@obst_header, $temp.";\n");
 127
 128                 # emit constructor code
 129                 if (!exists($n{"rd_constructor"}) || $n{"rd_constructor"} =~ /^DEFAULT$/i) { # default constructor
 130                         if ($arity !~ /^\d+$/) {
 131                                 print "DEFAULT rd_constructor requires numeric arity! Ignoring op $orig_op!\n";
 132                                 next;
 133                         }
 134                         $temp  = "  $arch\_attr_t *attr;\n";
 135                         $temp .= "  ir_node *res;\n";
 136                         $temp .= "  ir_node *in[$arity];\n" if ($arity > 0);
 137
 138                         undef my $in_req_var;
 139                         undef my $out_req_var;
 140
 141                         # set up static variables for requirements and registers
 142                         if (exists($n{"reg_req"})) {
 143                                 my %req = %{ $n{"reg_req"} };
 144                                 my $idx;
 145
 146                                 undef my @in;
 147                                 @in = @{ $req{"in"} } if (exists($req{"in"}));
 148                                 undef my @out;
 149                                 @out = @{ $req{"out"} } if exists(($req{"out"}));
 150
 151                                 if (@in) {
 152                                         $in_req_var = "_in_req_$op";
 153                                         $temp .= "  static const $arch\_register_req_t *".$in_req_var."[] =\n  {\n";
 154                                         for ($idx = 0; $idx <= $#in; $idx++) {
 155                                                 $temp .= "    ".$op."_reg_req_in_".$idx.",\n";
 156                                         }
 157                                         $temp .= "  };\n";
 158                                 }
 159
 160                                 if (@out) {
 161                                         $out_req_var = "_out_req_$op";
 162
 163                                         $temp .= "  static const $arch\_register_req_t *".$out_req_var."[] =\n  {\n";
 164                                         for ($idx = 0; $idx <= $#out; $idx++) {
 165                                                 $temp .= "    ".$op."_reg_req_out_".$idx.",\n";
 166                                         }
 167                                         $temp .= "  };\n";
 168                                 }
 169                         }
 170
 171                         $temp .= "\n";
 172                         $temp .= "  if (!op_$op) {\n";
 173                         $temp .= "    assert(0);\n";
 174                         $temp .= "    return NULL;\n";
 175                         $temp .= "  }\n\n";
 176                         for (my $i = 1; $i <= $arity; $i++) {
 177                                 $temp .= "  in[".($i - 1)."] = op".$i.";\n";
 178                         }
 179                         $temp .= "  res = new_ir_node(db, irg, block, op_$op, mode, $arity, ".($arity > 0 ? "in" : "NULL").");\n";
 180                         $temp .= "  res = optimize_node(res);\n";
 181                         $temp .= "  irn_vrfy_irg(res, irg);\n\n";
 182
 183                         # set flags
 184                         $temp .= "  attr = get_$arch\_attr(res);\n\n";
 185                         $temp .= "  attr->flags  = 0;                                 /* clear flags */\n";
 186
 187                         if (exists($n{"irn_flags"})) {
 188                                 foreach my $flag (split(/\|/, $n{"irn_flags"})) {
 189                                         if ($flag eq "R") {
 190                                                 $temp .= "  attr->flags |= arch_irn_flags_rematerializable;   /* op can be easily recalulated */\n";
 191                                         }
 192                                         elsif ($flag eq "N") {
 193                                                 $temp .= "  attr->flags |= arch_irn_flags_dont_spill;         /* op is NOT spillable */\n";
 194                                         }
 195                                         elsif ($flag eq "I") {
 196                                                 $temp .= "  attr->flags |= arch_irn_flags_ignore;             /* ignore op for register allocation */\n";
 197                                         }
 198                                 }
 199                         }
 200
 201                         # allocate memory and set pointer to register requirements
 202                         if (exists($n{"reg_req"})) {
 203                                 my %req = %{ $n{"reg_req"} };
 204
 205                                 undef my @in;
 206                                 @in = @{ $req{"in"} } if (exists($req{"in"}));
 207                                 undef my @out;
 208                                 @out = @{ $req{"out"} } if exists(($req{"out"}));
 209
 210                                 $temp .= "\n  /* set IN register requirements */\n";
 211                                 if (@in) {
 212                                         $temp .= "  attr->in_req  = ".$in_req_var.";\n";
 213                                 }
 214                                 else {
 215                                         $temp .= "  attr->in_req  = NULL;\n";
 216                                 }
 217
 218                                 $temp .= "\n  /* set OUT register requirements and get space for registers */\n";
 219                                 if (@out) {
 220                                         $temp .= "  attr->out_req = ".$out_req_var.";\n";
 221                                         $temp .= "  attr->slots   = xcalloc(".($#out + 1).", sizeof(attr->slots[0]));\n";
 222                                         $temp .= "  attr->n_res   = ".($#out + 1).";\n";
 223                                 }
 224                                 else {
 225                                         $temp .= "  attr->out_req = NULL;\n";
 226                                         $temp .= "  attr->slots   = NULL;\n";
 227                                         $temp .= "  attr->n_res   = 0;\n";
 228                                 }
 229                         }
 230
 231                         $temp .= "\n  return res;\n";
 232
 233                         push(@obst_constructor, $temp);
 234                 }
 235                 else { # user defined constructor
 236                         push(@obst_constructor, $n{"rd_constructor"});
 237                 }
 238
 239                 # close constructor function
 240                 push(@obst_constructor, "}\n\n");
 241
 242         } # constructor creation
 243
 244         # set default values for state and flags if not given
 245         $n{"state"}    = "floats" if (! exists($n{"state"}));
 246         $n{"op_flags"} = "N"      if (! exists($n{"op_flags"}));
 247
 248         push(@obst_new_irop, "\n  memset(&ops, 0, sizeof(ops));\n");
 249         push(@obst_new_irop, "  ops.dump_node     = dump_node_$arch;\n");
 250
 251         if ($cmp_attr_func) {
 252                 push(@obst_new_irop, "  ops.node_cmp_attr = cmp_attr_$op;\n");
 253         }
 254
 255         $n_opcodes++;
 256         $temp  = "  op_$op = new_ir_op(cur_opcode++, \"$op\", op_pin_state_".$n{"state"}.", ".$n{"op_flags"};
 257         $temp .= ", ".translate_arity($arity).", 2, sizeof($arch\_attr_t), &ops);\n";
 258         push(@obst_new_irop, $temp);
 259 }
 260
 261 # emit the code
 262
 263 open(OUT, ">$target_c") || die("Could not open $target_c, reason: $!\n");
 264
 265 print OUT "#include \"gen_$arch\_regalloc_if_t.h\"\n\n";
 266 print OUT @obst_cmp_attr;
 267 print OUT "\n";
 268 print OUT @obst_opvar;
 269 print OUT "\n";
 270 print OUT @obst_get_opvar;
 271 print OUT "\n";
 272
 273 print OUT<<ENDOFISIRN;
 274
 275 static opcode ia32_opcode_start = -1;
 276 static opcode ia32_opcode_end   = -1;
 277
 278 int is_$arch\_irn(const ir_node *node) {
 279   opcode opc = get_irn_opcode(node);
 280
 281   assert(ia32_opcode_start > 0 && "missing opcode init");
 282   assert(ia32_opcode_end > 0 && "missing opcode init");
 283
 284   if (opc > ia32_opcode_start && opc < ia32_opcode_end)
 285     return 1;
 286
 287   return 0;
 288 }
 289
 290 ENDOFISIRN
 291
 292 print OUT @obst_constructor;
 293
 294 print OUT<<ENDOFMAIN;
 295 /**
 296  * Creates the $arch specific firm operations
 297  * needed for the assembler irgs.
 298  */
 299 void $arch\_create_opcodes(void) {
 300 #define N   irop_flag_none
 301 #define L   irop_flag_labeled
 302 #define C   irop_flag_commutative
 303 #define X   irop_flag_cfopcode
 304 #define I   irop_flag_ip_cfopcode
 305 #define F   irop_flag_fragile
 306 #define Y   irop_flag_forking
 307 #define H   irop_flag_highlevel
 308 #define c   irop_flag_constlike
 309 #define K   irop_flag_keep
 310
 311   ir_op_ops ops;
 312   int cur_opcode = get_next_ir_opcodes($n_opcodes);
 313
 314   ia32_opcode_start = cur_opcode++;
 315
 316 ENDOFMAIN
 317
 318 print OUT @obst_new_irop;
 319 print OUT "\n  ia32_opcode_end = cur_opcode;\n";
 320 print OUT "}\n";
 321
 322 close(OUT);
 323
 324 open(OUT, ">$target_h") || die("Could not open $target_h, reason: $!\n");
 325
 326 print OUT "int is_$arch\_irn(const ir_node *node);\n";
 327 print OUT @obst_header;
 328
 329 close(OUT);
 330
 331 ###
 332 # Translates numeric arity into string constant.
 333 ###
 334 sub translate_arity {
 335         my $arity = shift;
 336
 337         if ($arity =~ /^\d+$/) {
 338                 if    ($arity == 0) {
 339                         return "oparity_zero";
 340                 }
 341                 elsif ($arity == 1) {
 342                         return "oparity_unary";
 343                 }
 344                 elsif ($arity == 2) {
 345                         return "oparity_binary";
 346                 }
 347                 elsif ($arity == 3) {
 348                         return "oparity_trinary";
 349                 }
 350                 else {
 351                         return "$arity";
 352                 }
 353         }
 354         else {
 355                 return "oparity_".$arity;
 356         }
 357 }