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         $orig_op = $op;
  59         $op      = $arch."_".$op;
  60         $arity   = $n{"arity"};
  61         $temp    = "";
  62
  63         push(@obst_opvar, "ir_op *op_$op = NULL;\n");
  64         push(@obst_get_opvar, "ir_op *get_op_$op(void)   { return op_$op; }\n");
  65         push(@obst_get_opvar, "int    is_$op(const ir_node *n) { return get_irn_op(n) == op_$op; }\n\n");
  66
  67         push(@obst_is_archirn, "is_$op(node)");
  68
  69         push(@obst_header, "int is_$op(const ir_node *n);\n");
  70
  71         $cmp_attr_func = 0;
  72         # create compare attribute function if needed
  73         if (exists($n{"cmp_attr"})) {
  74                 push(@obst_cmp_attr, "static int cmp_attr_$op(ir_node *a, ir_node *b) {\n");
  75                 push(@obst_cmp_attr, "  asmop_attr *attr_a = get_ia32_attr(a);\n");
  76                 push(@obst_cmp_attr, "  asmop_attr *attr_b = get_ia32_attr(b);\n");
  77                 push(@obst_cmp_attr, $n{"cmp_attr"});
  78                 push(@obst_cmp_attr, "}\n\n");
  79
  80                 $cmp_attr_func = 1;
  81         }
  82
  83         if (exists($n{"rd_constructor"}) && $n{"rd_constructor"} =~ /^NONE$/i) {
  84                 # we explicitly skip the constructor if the specification entry says NONE
  85         }
  86         else {
  87                 $n{"comment"} = "construct $op" if(!exists($n{"comment"}));
  88                 $n{"comment"} =~ s/^"|"$//g;    # remove "
  89                 $n{"comment"} = "/* ".$n{"comment"}." */\n";
  90                 push(@obst_constructor, $n{"comment"});
  91
  92                 # create constructor head
  93                 my $complete_args = "";
  94                 my $arg_names     = "";
  95                 $temp             = "";
  96
  97                 $temp = "ir_node *new_rd_$op(dbg_info *db, ir_graph *irg, ir_node *block";
  98                 if (!exists($n{"args"}) || $n{"args"} =~ /^DEFAULT$/i) { # default args
  99                         if ($n{"arity"} !~ /^\d+$/) {
 100                                 print "DEFAULT args require numeric arity (0, 1, 2, ...)! Ignoring op $orig_op!\n";
 101                                 next;
 102                         }
 103                         for (my $i = 1; $i <= $n{"arity"}; $i++) {
 104                                 $complete_args .= ", ir_node *op".$i;
 105                                 $arg_names     .= ", op".$i;
 106                         }
 107                         $complete_args .= ", ir_mode *mode";
 108                         $arg_names     .= ", mode";
 109                 }
 110                 else { # user defined args
 111                         for my $href (@{ $n{"args"} }) {
 112                                 $href->{"type"} .= " " if ($href->{"type"} !~ / [*]?$/); # put a space between name and type if there is none at the end
 113                                 $complete_args  .= ", ".$href->{"type"}.$href->{"name"};
 114                                 $arg_names      .= ", ".$href->{"name"};
 115                         }
 116                 }
 117                 $complete_args = substr($complete_args, 2);
 118                 $temp .= ", $complete_args)";
 119                 push(@obst_constructor, $temp." {\n");
 120                 push(@obst_header, $temp.";\n");
 121
 122                 # emit constructor code
 123                 if (!exists($n{"rd_constructor"}) || $n{"rd_constructor"} =~ /^DEFAULT$/i) { # default constructor
 124                         if ($n{"arity"} !~ /^\d+$/) {
 125                                 print "DEFAULT rd_constructor requires arity 0,1,2 or 3! Ignoring op $orig_op!\n";
 126                                 next;
 127                         }
 128                         $temp  = "  asmop_attr *attr;\n";
 129                         $temp .= "  ir_node *res;\n";
 130                         $temp .= "  ir_node *in[$arity];\n" if ($arity > 0);
 131
 132                         undef my $in_req_var;
 133                         undef my $out_req_var;
 134
 135                         # set up static variables for requirements and registers
 136                         if (exists($n{"reg_req"})) {
 137                                 my %req = %{ $n{"reg_req"} };
 138                                 my $idx;
 139
 140                                 undef my @in;
 141                                 @in = @{ $req{"in"} } if (exists($req{"in"}));
 142                                 undef my @out;
 143                                 @out = @{ $req{"out"} } if exists(($req{"out"}));
 144
 145                                 if (@in) {
 146                                         $in_req_var = "_in_req_$op";
 147                                         $temp .= "  static const $arch\_register_req_t *".$in_req_var."[] =\n  {\n";
 148                                         for ($idx = 0; $idx <= $#in; $idx++) {
 149                                                 $temp .= "    ".$op."_reg_req_in_".$idx.",\n";
 150                                         }
 151                                         $temp .= "  };\n";
 152                                 }
 153
 154                                 if (@out) {
 155                                         $out_req_var = "_out_req_$op";
 156
 157                                         $temp .= "  static const $arch\_register_req_t *".$out_req_var."[] =\n  {\n";
 158                                         for ($idx = 0; $idx <= $#out; $idx++) {
 159                                                 $temp .= "    ".$op."_reg_req_out_".$idx.",\n";
 160                                         }
 161                                         $temp .= "  };\n";
 162                                 }
 163                         }
 164
 165                         $temp .= "\n";
 166                         $temp .= "  if (!op_$op) {\n";
 167                         $temp .= "    assert(0);\n";
 168                         $temp .= "    return NULL;\n";
 169                         $temp .= "  }\n\n";
 170                         for (my $i = 1; $i <= $arity; $i++) {
 171                                 $temp .= "  in[".($i - 1)."] = op".$i.";\n";
 172                         }
 173                         $temp .= "  res = new_ir_node(db, irg, block, op_$op, mode, $arity, ".($arity > 0 ? "in" : "NULL").");\n";
 174                         $temp .= "  set_ia32_pncode(res, -1);\n";
 175                         $temp .= "  res = optimize_node(res);\n";
 176                         $temp .= "  irn_vrfy_irg(res, irg);\n\n";
 177
 178                         # set register flags
 179                         $temp .= "  attr = get_ia32_attr(res);\n\n";
 180                         $temp .= "  attr->flags  = 0;                                 /* clear flags */\n";
 181                         if (exists($n{"spill"}) && $n{"spill"} == 0) {
 182                                 $temp .= "  attr->flags |= arch_irn_flags_dont_spill;          /* op is NOT spillable */\n";
 183                         }
 184                         if (exists($n{"remat"}) && $n{"remat"} == 1) {
 185                                 $temp .= "  attr->flags |= arch_irn_flags_rematerializable;   /* op can be easily recalulated */\n";
 186                         }
 187
 188                         # allocate memory and set pointer to register requirements
 189                         if (exists($n{"reg_req"})) {
 190                                 my %req = %{ $n{"reg_req"} };
 191
 192                                 undef my @in;
 193                                 @in = @{ $req{"in"} } if (exists($req{"in"}));
 194                                 undef my @out;
 195                                 @out = @{ $req{"out"} } if exists(($req{"out"}));
 196
 197                                 $temp .= "\n  /* set IN register requirements */\n";
 198                                 if (@in) {
 199                                         $temp .= "  attr->in_req  = ".$in_req_var.";\n";
 200                                 }
 201                                 else {
 202                                         $temp .= "  attr->in_req  = NULL;\n";
 203                                 }
 204
 205                                 $temp .= "\n  /* set OUT register requirements and get space for registers */\n";
 206                                 if (@out) {
 207                                         $temp .= "  attr->out_req = ".$out_req_var.";\n";
 208                                         $temp .= "  attr->slots   = xcalloc(".($#out + 1).", sizeof(attr->slots[0]));\n";
 209                                         $temp .= "  attr->n_res   = ".($#out + 1).";\n";
 210                                 }
 211                                 else {
 212                                         $temp .= "  attr->out_req = NULL;\n";
 213                                         $temp .= "  attr->slots   = NULL;\n";
 214                                         $temp .= "  attr->n_res   = 0;\n";
 215                                 }
 216                         }
 217
 218                         $temp .= "\n  return res;\n";
 219
 220                         push(@obst_constructor, $temp);
 221                 }
 222                 else { # user defined constructor
 223                         push(@obst_constructor, $n{"rd_constructor"});
 224                 }
 225
 226                 # close constructor function
 227                 push(@obst_constructor, "}\n\n");
 228
 229         } # constructor creation
 230
 231         # set default values for state and flags if not given
 232         $n{"state"}    = "pinned" if (! exists($n{"state"}));
 233         $n{"op_flags"} = "N"      if (! exists($n{"op_flags"}));
 234
 235         push(@obst_new_irop, "\n  memset(&ops, 0, sizeof(ops));\n");
 236         push(@obst_new_irop, "  ops.dump_node     = dump_node_$arch;\n");
 237
 238         if ($cmp_attr_func) {
 239                 push(@obst_new_irop, "  ops.node_cmp_attr = cmp_attr_$op;\n");
 240         }
 241
 242         $n_opcodes++;
 243         $temp  = "  op_$op = new_ir_op(cur_opcode++, \"$op\", op_pin_state_".$n{"state"}.", ".$n{"op_flags"};
 244         $temp .= ", ".translate_arity($arity).", 0, sizeof(asmop_attr), &ops);\n";
 245         push(@obst_new_irop, $temp);
 246 }
 247
 248 # emit the code
 249
 250 open(OUT, ">$target_c") || die("Could not open $target_c, reason: $!\n");
 251
 252 print OUT "#include \"gen_$arch\_regalloc_if_t.h\"\n\n";
 253 print OUT @obst_cmp_attr;
 254 print OUT "\n";
 255 print OUT @obst_opvar;
 256 print OUT "\n";
 257 print OUT @obst_get_opvar;
 258 print OUT "\n";
 259
 260 print OUT<<ENDOFISIRN;
 261
 262 static opcode ia32_opcode_start = -1;
 263 static opcode ia32_opcode_end   = -1;
 264
 265 int is_$arch\_irn(const ir_node *node) {
 266   opcode opc = get_irn_opcode(node);
 267
 268   assert(ia32_opcode_start > 0 && "missing opcode init");
 269   assert(ia32_opcode_end > 0 && "missing opcode init");
 270
 271   if (opc > ia32_opcode_start && opc < ia32_opcode_end)
 272     return 1;
 273
 274   return 0;
 275 }
 276
 277 ENDOFISIRN
 278
 279 print OUT @obst_constructor;
 280
 281 print OUT<<ENDOFMAIN;
 282 /**
 283  * Creates the $arch specific firm operations
 284  * needed for the assembler irgs.
 285  */
 286 void $arch\_create_opcodes(void) {
 287 #define N   irop_flag_none
 288 #define L   irop_flag_labeled
 289 #define C   irop_flag_commutative
 290 #define X   irop_flag_cfopcode
 291 #define I   irop_flag_ip_cfopcode
 292 #define F   irop_flag_fragile
 293 #define Y   irop_flag_forking
 294 #define H   irop_flag_highlevel
 295 #define c   irop_flag_constlike
 296 #define K   irop_flag_keep
 297
 298   ir_op_ops ops;
 299   int cur_opcode = get_next_ir_opcodes($n_opcodes);
 300
 301   ia32_opcode_start = cur_opcode++;
 302
 303 ENDOFMAIN
 304
 305 print OUT @obst_new_irop;
 306 print OUT "\n  ia32_opcode_end = cur_opcode;\n";
 307 print OUT "}\n";
 308
 309 close(OUT);
 310
 311 open(OUT, ">$target_h") || die("Could not open $target_h, reason: $!\n");
 312
 313 print OUT @obst_header;
 314
 315 close(OUT);
 316
 317 ###
 318 # Translates numeric arity into string constant.
 319 ###
 320 sub translate_arity {
 321         my $arity = shift;
 322
 323         if ($arity =~ /^\d+$/) {
 324                 if    ($arity == 0) {
 325                         return "oparity_zero";
 326                 }
 327                 elsif ($arity == 1) {
 328                         return "oparity_unary";
 329                 }
 330                 elsif ($arity == 2) {
 331                         return "oparity_binary";
 332                 }
 333                 elsif ($arity == 3) {
 334                         return "oparity_trinary";
 335                 }
 336                 else {
 337                         return "$arity";
 338                 }
 339         }
 340         else {
 341                 return "oparity_".$arity;
 342         }
 343 }