gcc/print-rtl.c

   1 /* Print RTL for GCC.
   2    Copyright (C) 1987, 1988, 1992, 1997, 1998, 1999, 2000, 2002, 2003,
   3    2004, 2005, 2007, 2008, 2009
   4    Free Software Foundation, Inc.
   5
   6 This file is part of GCC.
   7
   8 GCC is free software; you can redistribute it and/or modify it under
   9 the terms of the GNU General Public License as published by the Free
  10 Software Foundation; either version 3, or (at your option) any later
  11 version.
  12
  13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  16 for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GCC; see the file COPYING3.  If not see
  20 <http://www.gnu.org/licenses/>.  */
  21
  22 /* This file is compiled twice: once for the generator programs,
  23    once for the compiler.  */
  24 #ifdef GENERATOR_FILE
  25 #include "bconfig.h"
  26 #else
  27 #include "config.h"
  28 #endif
  29
  30 #include "system.h"
  31 #include "coretypes.h"
  32 #include "tm.h"
  33 #include "rtl.h"
  34
  35 /* These headers all define things which are not available in
  36    generator programs.  */
  37 #ifndef GENERATOR_FILE
  38 #include "tree.h"
  39 #include "real.h"
  40 #include "flags.h"
  41 #include "hard-reg-set.h"
  42 #include "basic-block.h"
  43 #include "diagnostic.h"
  44 #endif
  45
  46 static FILE *outfile;
  47
  48 static int sawclose = 0;
  49
  50 static int indent;
  51
  52 static void print_rtx (const_rtx);
  53
  54 /* String printed at beginning of each RTL when it is dumped.
  55    This string is set to ASM_COMMENT_START when the RTL is dumped in
  56    the assembly output file.  */
  57 const char *print_rtx_head = "";
  58
  59 /* Nonzero means suppress output of instruction numbers
  60    in debugging dumps.
  61    This must be defined here so that programs like gencodes can be linked.  */
  62 int flag_dump_unnumbered = 0;
  63
  64 /* Nonzero means suppress output of instruction numbers for previous
  65    and next insns in debugging dumps.
  66    This must be defined here so that programs like gencodes can be linked.  */
  67 int flag_dump_unnumbered_links = 0;
  68
  69 /* Nonzero means use simplified format without flags, modes, etc.  */
  70 int flag_simple = 0;
  71
  72 /* Nonzero if we are dumping graphical description.  */
  73 int dump_for_graph;
  74
  75 #ifndef GENERATOR_FILE
  76 void
  77 print_mem_expr (FILE *outfile, const_tree expr)
  78 {
  79   fputc (' ', outfile);
  80   print_generic_expr (outfile, CONST_CAST_TREE (expr), 0);
  81 }
  82 #endif
  83
  84 /* Print IN_RTX onto OUTFILE.  This is the recursive part of printing.  */
  85
  86 static void
  87 print_rtx (const_rtx in_rtx)
  88 {
  89   int i = 0;
  90   int j;
  91   const char *format_ptr;
  92   int is_insn;
  93
  94   if (sawclose)
  95     {
  96       if (flag_simple)
  97         fputc (' ', outfile);
  98       else
  99         fprintf (outfile, "\n%s%*s", print_rtx_head, indent * 2, "");
 100       sawclose = 0;
 101     }
 102
 103   if (in_rtx == 0)
 104     {
 105       fputs ("(nil)", outfile);
 106       sawclose = 1;
 107       return;
 108     }
 109   else if (GET_CODE (in_rtx) > NUM_RTX_CODE)
 110     {
 111        fprintf (outfile, "(??? bad code %d\n)", GET_CODE (in_rtx));
 112        sawclose = 1;
 113        return;
 114     }
 115
 116   is_insn = INSN_P (in_rtx);
 117
 118   /* When printing in VCG format we write INSNs, NOTE, LABEL, and BARRIER
 119      in separate nodes and therefore have to handle them special here.  */
 120   if (dump_for_graph
 121       && (is_insn || NOTE_P (in_rtx)
 122           || LABEL_P (in_rtx) || BARRIER_P (in_rtx)))
 123     {
 124       i = 3;
 125       indent = 0;
 126     }
 127   else
 128     {
 129       /* Print name of expression code.  */
 130       if (flag_simple && CONST_INT_P (in_rtx))
 131         fputc ('(', outfile);
 132       else
 133         fprintf (outfile, "(%s", GET_RTX_NAME (GET_CODE (in_rtx)));
 134
 135       if (! flag_simple)
 136         {
 137           if (RTX_FLAG (in_rtx, in_struct))
 138             fputs ("/s", outfile);
 139
 140           if (RTX_FLAG (in_rtx, volatil))
 141             fputs ("/v", outfile);
 142
 143           if (RTX_FLAG (in_rtx, unchanging))
 144             fputs ("/u", outfile);
 145
 146           if (RTX_FLAG (in_rtx, frame_related))
 147             fputs ("/f", outfile);
 148
 149           if (RTX_FLAG (in_rtx, jump))
 150             fputs ("/j", outfile);
 151
 152           if (RTX_FLAG (in_rtx, call))
 153             fputs ("/c", outfile);
 154
 155           if (RTX_FLAG (in_rtx, return_val))
 156             fputs ("/i", outfile);
 157
 158           /* Print REG_NOTE names for EXPR_LIST and INSN_LIST.  */
 159           if ((GET_CODE (in_rtx) == EXPR_LIST
 160                || GET_CODE (in_rtx) == INSN_LIST)
 161               && (int)GET_MODE (in_rtx) < REG_NOTE_MAX)
 162             fprintf (outfile, ":%s",
 163                      GET_REG_NOTE_NAME (GET_MODE (in_rtx)));
 164
 165           /* For other rtl, print the mode if it's not VOID.  */
 166           else if (GET_MODE (in_rtx) != VOIDmode)
 167             fprintf (outfile, ":%s", GET_MODE_NAME (GET_MODE (in_rtx)));
 168         }
 169     }
 170
 171 #ifndef GENERATOR_FILE
 172   if (GET_CODE (in_rtx) == CONST_DOUBLE && FLOAT_MODE_P (GET_MODE (in_rtx)))
 173     i = 5;
 174 #endif
 175
 176   /* Get the format string and skip the first elements if we have handled
 177      them already.  */
 178   format_ptr = GET_RTX_FORMAT (GET_CODE (in_rtx)) + i;
 179   for (; i < GET_RTX_LENGTH (GET_CODE (in_rtx)); i++)
 180     switch (*format_ptr++)
 181       {
 182         const char *str;
 183
 184       case 'T':
 185         str = XTMPL (in_rtx, i);
 186         goto string;
 187
 188       case 'S':
 189       case 's':
 190         str = XSTR (in_rtx, i);
 191       string:
 192
 193         if (str == 0)
 194           fputs (dump_for_graph ? " \\\"\\\"" : " \"\"", outfile);
 195         else
 196           {
 197             if (dump_for_graph)
 198               fprintf (outfile, " (\\\"%s\\\")", str);
 199             else
 200               fprintf (outfile, " (\"%s\")", str);
 201           }
 202         sawclose = 1;
 203         break;
 204
 205         /* 0 indicates a field for internal use that should not be printed.
 206            An exception is the third field of a NOTE, where it indicates
 207            that the field has several different valid contents.  */
 208       case '0':
 209         if (i == 1 && REG_P (in_rtx))
 210           {
 211             if (REGNO (in_rtx) != ORIGINAL_REGNO (in_rtx))
 212               fprintf (outfile, " [%d]", ORIGINAL_REGNO (in_rtx));
 213           }
 214 #ifndef GENERATOR_FILE
 215         else if (i == 1 && GET_CODE (in_rtx) == SYMBOL_REF)
 216           {
 217             int flags = SYMBOL_REF_FLAGS (in_rtx);
 218             if (flags)
 219               fprintf (outfile, " [flags 0x%x]", flags);
 220           }
 221         else if (i == 2 && GET_CODE (in_rtx) == SYMBOL_REF)
 222           {
 223             tree decl = SYMBOL_REF_DECL (in_rtx);
 224             if (decl)
 225               print_node_brief (outfile, "", decl, 0);
 226           }
 227 #endif
 228         else if (i == 4 && NOTE_P (in_rtx))
 229           {
 230             switch (NOTE_KIND (in_rtx))
 231               {
 232               case NOTE_INSN_EH_REGION_BEG:
 233               case NOTE_INSN_EH_REGION_END:
 234                 if (flag_dump_unnumbered)
 235                   fprintf (outfile, " #");
 236                 else
 237                   fprintf (outfile, " %d", NOTE_EH_HANDLER (in_rtx));
 238                 sawclose = 1;
 239                 break;
 240
 241               case NOTE_INSN_BLOCK_BEG:
 242               case NOTE_INSN_BLOCK_END:
 243 #ifndef GENERATOR_FILE
 244                 dump_addr (outfile, " ", NOTE_BLOCK (in_rtx));
 245 #endif
 246                 sawclose = 1;
 247                 break;
 248
 249               case NOTE_INSN_BASIC_BLOCK:
 250                 {
 251 #ifndef GENERATOR_FILE
 252                   basic_block bb = NOTE_BASIC_BLOCK (in_rtx);
 253                   if (bb != 0)
 254                     fprintf (outfile, " [bb %d]", bb->index);
 255 #endif
 256                   break;
 257                 }
 258
 259               case NOTE_INSN_DELETED_LABEL:
 260                 {
 261                   const char *label = NOTE_DELETED_LABEL_NAME (in_rtx);
 262                   if (label)
 263                     fprintf (outfile, " (\"%s\")", label);
 264                   else
 265                     fprintf (outfile, " \"\"");
 266                 }
 267                 break;
 268
 269               case NOTE_INSN_SWITCH_TEXT_SECTIONS:
 270                 {
 271 #ifndef GENERATOR_FILE
 272                   basic_block bb = NOTE_BASIC_BLOCK (in_rtx);
 273                   if (bb != 0)
 274                     fprintf (outfile, " [bb %d]", bb->index);
 275 #endif
 276                   break;
 277                 }
 278
 279               case NOTE_INSN_VAR_LOCATION:
 280 #ifndef GENERATOR_FILE
 281                 fprintf (outfile, " (");
 282                 print_mem_expr (outfile, NOTE_VAR_LOCATION_DECL (in_rtx));
 283                 fprintf (outfile, " ");
 284                 print_rtx (NOTE_VAR_LOCATION_LOC (in_rtx));
 285                 if (NOTE_VAR_LOCATION_STATUS (in_rtx) ==
 286                                                  VAR_INIT_STATUS_UNINITIALIZED)
 287                   fprintf (outfile, " [uninit]");
 288                 fprintf (outfile, ")");
 289 #endif
 290                 break;
 291
 292               default:
 293                 break;
 294               }
 295           }
 296         else if (i == 9 && JUMP_P (in_rtx) && XEXP (in_rtx, i) != NULL)
 297           /* Output the JUMP_LABEL reference.  */
 298           fprintf (outfile, "\n -> %d", INSN_UID (XEXP (in_rtx, i)));
 299         break;
 300
 301       case 'e':
 302       do_e:
 303         indent += 2;
 304         if (!sawclose)
 305           fprintf (outfile, " ");
 306         print_rtx (XEXP (in_rtx, i));
 307         indent -= 2;
 308         break;
 309
 310       case 'E':
 311       case 'V':
 312         indent += 2;
 313         if (sawclose)
 314           {
 315             fprintf (outfile, "\n%s%*s",
 316                      print_rtx_head, indent * 2, "");
 317             sawclose = 0;
 318           }
 319         fputs (" [", outfile);
 320         if (NULL != XVEC (in_rtx, i))
 321           {
 322             indent += 2;
 323             if (XVECLEN (in_rtx, i))
 324               sawclose = 1;
 325
 326             for (j = 0; j < XVECLEN (in_rtx, i); j++)
 327               print_rtx (XVECEXP (in_rtx, i, j));
 328
 329             indent -= 2;
 330           }
 331         if (sawclose)
 332           fprintf (outfile, "\n%s%*s", print_rtx_head, indent * 2, "");
 333
 334         fputs ("]", outfile);
 335         sawclose = 1;
 336         indent -= 2;
 337         break;
 338
 339       case 'w':
 340         if (! flag_simple)
 341           fprintf (outfile, " ");
 342         fprintf (outfile, HOST_WIDE_INT_PRINT_DEC, XWINT (in_rtx, i));
 343         if (! flag_simple)
 344           fprintf (outfile, " [" HOST_WIDE_INT_PRINT_HEX "]",
 345                    (unsigned HOST_WIDE_INT) XWINT (in_rtx, i));
 346         break;
 347
 348       case 'i':
 349         if (i == 4 && INSN_P (in_rtx))
 350           {
 351 #ifndef GENERATOR_FILE
 352             /*  Pretty-print insn locators.  Ignore scoping as it is mostly
 353                 redundant with line number information and do not print anything
 354                 when there is no location information available.  */
 355             if (INSN_LOCATOR (in_rtx) && insn_file (in_rtx))
 356               fprintf(outfile, " %s:%i", insn_file (in_rtx), insn_line (in_rtx));
 357 #endif
 358           }
 359         else if (i == 6 && NOTE_P (in_rtx))
 360           {
 361             /* This field is only used for NOTE_INSN_DELETED_LABEL, and
 362                other times often contains garbage from INSN->NOTE death.  */
 363             if (NOTE_KIND (in_rtx) == NOTE_INSN_DELETED_LABEL)
 364               fprintf (outfile, " %d",  XINT (in_rtx, i));
 365           }
 366         else
 367           {
 368             int value = XINT (in_rtx, i);
 369             const char *name;
 370
 371 #ifndef GENERATOR_FILE
 372             if (REG_P (in_rtx) && value < FIRST_PSEUDO_REGISTER)
 373               fprintf (outfile, " %d %s", REGNO (in_rtx),
 374                        reg_names[REGNO (in_rtx)]);
 375             else if (REG_P (in_rtx)
 376                      && value <= LAST_VIRTUAL_REGISTER)
 377               {
 378                 if (value == VIRTUAL_INCOMING_ARGS_REGNUM)
 379                   fprintf (outfile, " %d virtual-incoming-args", value);
 380                 else if (value == VIRTUAL_STACK_VARS_REGNUM)
 381                   fprintf (outfile, " %d virtual-stack-vars", value);
 382                 else if (value == VIRTUAL_STACK_DYNAMIC_REGNUM)
 383                   fprintf (outfile, " %d virtual-stack-dynamic", value);
 384                 else if (value == VIRTUAL_OUTGOING_ARGS_REGNUM)
 385                   fprintf (outfile, " %d virtual-outgoing-args", value);
 386                 else if (value == VIRTUAL_CFA_REGNUM)
 387                   fprintf (outfile, " %d virtual-cfa", value);
 388                 else
 389                   fprintf (outfile, " %d virtual-reg-%d", value,
 390                            value-FIRST_VIRTUAL_REGISTER);
 391               }
 392             else
 393 #endif
 394               if (flag_dump_unnumbered
 395                      && (is_insn || NOTE_P (in_rtx)))
 396               fputc ('#', outfile);
 397             else
 398               fprintf (outfile, " %d", value);
 399
 400 #ifndef GENERATOR_FILE
 401             if (REG_P (in_rtx) && REG_ATTRS (in_rtx))
 402               {
 403                 fputs (" [", outfile);
 404                 if (ORIGINAL_REGNO (in_rtx) != REGNO (in_rtx))
 405                   fprintf (outfile, "orig:%i", ORIGINAL_REGNO (in_rtx));
 406                 if (REG_EXPR (in_rtx))
 407                   print_mem_expr (outfile, REG_EXPR (in_rtx));
 408
 409                 if (REG_OFFSET (in_rtx))
 410                   fprintf (outfile, "+" HOST_WIDE_INT_PRINT_DEC,
 411                            REG_OFFSET (in_rtx));
 412                 fputs (" ]", outfile);
 413               }
 414 #endif
 415
 416             if (is_insn && &INSN_CODE (in_rtx) == &XINT (in_rtx, i)
 417                 && XINT (in_rtx, i) >= 0
 418                 && (name = get_insn_name (XINT (in_rtx, i))) != NULL)
 419               fprintf (outfile, " {%s}", name);
 420             sawclose = 0;
 421           }
 422         break;
 423
 424       /* Print NOTE_INSN names rather than integer codes.  */
 425
 426       case 'n':
 427         fprintf (outfile, " %s", GET_NOTE_INSN_NAME (XINT (in_rtx, i)));
 428         sawclose = 0;
 429         break;
 430
 431       case 'u':
 432         if (XEXP (in_rtx, i) != NULL)
 433           {
 434             rtx sub = XEXP (in_rtx, i);
 435             enum rtx_code subc = GET_CODE (sub);
 436
 437             if (GET_CODE (in_rtx) == LABEL_REF)
 438               {
 439                 if (subc == NOTE
 440                     && NOTE_KIND (sub) == NOTE_INSN_DELETED_LABEL)
 441                   {
 442                     if (flag_dump_unnumbered)
 443                       fprintf (outfile, " [# deleted]");
 444                     else
 445                       fprintf (outfile, " [%d deleted]", INSN_UID (sub));
 446                     sawclose = 0;
 447                     break;
 448                   }
 449
 450                 if (subc != CODE_LABEL)
 451                   goto do_e;
 452               }
 453
 454             if (flag_dump_unnumbered
 455                 || (flag_dump_unnumbered_links && (i == 1 || i == 2)
 456                     && (INSN_P (in_rtx) || NOTE_P (in_rtx)
 457                         || LABEL_P (in_rtx) || BARRIER_P (in_rtx))))
 458               fputs (" #", outfile);
 459             else
 460               fprintf (outfile, " %d", INSN_UID (sub));
 461           }
 462         else
 463           fputs (" 0", outfile);
 464         sawclose = 0;
 465         break;
 466
 467       case 'b':
 468 #ifndef GENERATOR_FILE
 469         if (XBITMAP (in_rtx, i) == NULL)
 470           fputs (" {null}", outfile);
 471         else
 472           bitmap_print (outfile, XBITMAP (in_rtx, i), " {", "}");
 473 #endif
 474         sawclose = 0;
 475         break;
 476
 477       case 't':
 478 #ifndef GENERATOR_FILE
 479         dump_addr (outfile, " ", XTREE (in_rtx, i));
 480 #endif
 481         break;
 482
 483       case '*':
 484         fputs (" Unknown", outfile);
 485         sawclose = 0;
 486         break;
 487
 488       case 'B':
 489 #ifndef GENERATOR_FILE
 490         if (XBBDEF (in_rtx, i))
 491           fprintf (outfile, " %i", XBBDEF (in_rtx, i)->index);
 492 #endif
 493         break;
 494
 495       default:
 496         gcc_unreachable ();
 497       }
 498
 499   switch (GET_CODE (in_rtx))
 500     {
 501 #ifndef GENERATOR_FILE
 502     case MEM:
 503       fprintf (outfile, " [" HOST_WIDE_INT_PRINT_DEC,
 504                (HOST_WIDE_INT) MEM_ALIAS_SET (in_rtx));
 505
 506       if (MEM_EXPR (in_rtx))
 507         print_mem_expr (outfile, MEM_EXPR (in_rtx));
 508
 509       if (MEM_OFFSET (in_rtx))
 510         fprintf (outfile, "+" HOST_WIDE_INT_PRINT_DEC,
 511                  INTVAL (MEM_OFFSET (in_rtx)));
 512
 513       if (MEM_SIZE (in_rtx))
 514         fprintf (outfile, " S" HOST_WIDE_INT_PRINT_DEC,
 515                  INTVAL (MEM_SIZE (in_rtx)));
 516
 517       if (MEM_ALIGN (in_rtx) != 1)
 518         fprintf (outfile, " A%u", MEM_ALIGN (in_rtx));
 519
 520       fputc (']', outfile);
 521       break;
 522
 523     case CONST_DOUBLE:
 524       if (FLOAT_MODE_P (GET_MODE (in_rtx)))
 525         {
 526           char s[60];
 527
 528           real_to_decimal (s, CONST_DOUBLE_REAL_VALUE (in_rtx),
 529                            sizeof (s), 0, 1);
 530           fprintf (outfile, " %s", s);
 531
 532           real_to_hexadecimal (s, CONST_DOUBLE_REAL_VALUE (in_rtx),
 533                                sizeof (s), 0, 1);
 534           fprintf (outfile, " [%s]", s);
 535         }
 536       break;
 537 #endif
 538
 539     case CODE_LABEL:
 540       fprintf (outfile, " [%d uses]", LABEL_NUSES (in_rtx));
 541       switch (LABEL_KIND (in_rtx))
 542         {
 543           case LABEL_NORMAL: break;
 544           case LABEL_STATIC_ENTRY: fputs (" [entry]", outfile); break;
 545           case LABEL_GLOBAL_ENTRY: fputs (" [global entry]", outfile); break;
 546           case LABEL_WEAK_ENTRY: fputs (" [weak entry]", outfile); break;
 547           default: gcc_unreachable ();
 548         }
 549       break;
 550
 551     default:
 552       break;
 553     }
 554
 555   if (dump_for_graph
 556       && (is_insn || NOTE_P (in_rtx)
 557           || LABEL_P (in_rtx) || BARRIER_P (in_rtx)))
 558     sawclose = 0;
 559   else
 560     {
 561       fputc (')', outfile);
 562       sawclose = 1;
 563     }
 564 }
 565
 566 /* Print an rtx on the current line of FILE.  Initially indent IND
 567    characters.  */
 568
 569 void
 570 print_inline_rtx (FILE *outf, const_rtx x, int ind)
 571 {
 572   int oldsaw = sawclose;
 573   int oldindent = indent;
 574
 575   sawclose = 0;
 576   indent = ind;
 577   outfile = outf;
 578   print_rtx (x);
 579   sawclose = oldsaw;
 580   indent = oldindent;
 581 }
 582
 583 /* Call this function from the debugger to see what X looks like.  */
 584
 585 void
 586 debug_rtx (const_rtx x)
 587 {
 588   outfile = stderr;
 589   sawclose = 0;
 590   print_rtx (x);
 591   fprintf (stderr, "\n");
 592 }
 593
 594 /* Count of rtx's to print with debug_rtx_list.
 595    This global exists because gdb user defined commands have no arguments.  */
 596
 597 int debug_rtx_count = 0;        /* 0 is treated as equivalent to 1 */
 598
 599 /* Call this function to print list from X on.
 600
 601    N is a count of the rtx's to print. Positive values print from the specified
 602    rtx on.  Negative values print a window around the rtx.
 603    EG: -5 prints 2 rtx's on either side (in addition to the specified rtx).  */
 604
 605 void
 606 debug_rtx_list (const_rtx x, int n)
 607 {
 608   int i,count;
 609   const_rtx insn;
 610
 611   count = n == 0 ? 1 : n < 0 ? -n : n;
 612
 613   /* If we are printing a window, back up to the start.  */
 614
 615   if (n < 0)
 616     for (i = count / 2; i > 0; i--)
 617       {
 618         if (PREV_INSN (x) == 0)
 619           break;
 620         x = PREV_INSN (x);
 621       }
 622
 623   for (i = count, insn = x; i > 0 && insn != 0; i--, insn = NEXT_INSN (insn))
 624     {
 625       debug_rtx (insn);
 626       fprintf (stderr, "\n");
 627     }
 628 }
 629
 630 /* Call this function to print an rtx list from START to END inclusive.  */
 631
 632 void
 633 debug_rtx_range (const_rtx start, const_rtx end)
 634 {
 635   while (1)
 636     {
 637       debug_rtx (start);
 638       fprintf (stderr, "\n");
 639       if (!start || start == end)
 640         break;
 641       start = NEXT_INSN (start);
 642     }
 643 }
 644
 645 /* Call this function to search an rtx list to find one with insn uid UID,
 646    and then call debug_rtx_list to print it, using DEBUG_RTX_COUNT.
 647    The found insn is returned to enable further debugging analysis.  */
 648
 649 const_rtx
 650 debug_rtx_find (const_rtx x, int uid)
 651 {
 652   while (x != 0 && INSN_UID (x) != uid)
 653     x = NEXT_INSN (x);
 654   if (x != 0)
 655     {
 656       debug_rtx_list (x, debug_rtx_count);
 657       return x;
 658     }
 659   else
 660     {
 661       fprintf (stderr, "insn uid %d not found\n", uid);
 662       return 0;
 663     }
 664 }
 665
 666 /* External entry point for printing a chain of insns
 667    starting with RTX_FIRST onto file OUTF.
 668    A blank line separates insns.
 669
 670    If RTX_FIRST is not an insn, then it alone is printed, with no newline.  */
 671
 672 void
 673 print_rtl (FILE *outf, const_rtx rtx_first)
 674 {
 675   const_rtx tmp_rtx;
 676
 677   outfile = outf;
 678   sawclose = 0;
 679
 680   if (rtx_first == 0)
 681     {
 682       fputs (print_rtx_head, outf);
 683       fputs ("(nil)\n", outf);
 684     }
 685   else
 686     switch (GET_CODE (rtx_first))
 687       {
 688       case INSN:
 689       case JUMP_INSN:
 690       case CALL_INSN:
 691       case NOTE:
 692       case CODE_LABEL:
 693       case BARRIER:
 694         for (tmp_rtx = rtx_first; tmp_rtx != 0; tmp_rtx = NEXT_INSN (tmp_rtx))
 695           {
 696             fputs (print_rtx_head, outfile);
 697             print_rtx (tmp_rtx);
 698             fprintf (outfile, "\n");
 699           }
 700         break;
 701
 702       default:
 703         fputs (print_rtx_head, outfile);
 704         print_rtx (rtx_first);
 705       }
 706 }
 707
 708 /* Like print_rtx, except specify a file.  */
 709 /* Return nonzero if we actually printed anything.  */
 710
 711 int
 712 print_rtl_single (FILE *outf, const_rtx x)
 713 {
 714   outfile = outf;
 715   sawclose = 0;
 716   fputs (print_rtx_head, outfile);
 717   print_rtx (x);
 718   putc ('\n', outf);
 719   return 1;
 720 }
 721
 722
 723 /* Like print_rtl except without all the detail; for example,
 724    if RTX is a CONST_INT then print in decimal format.  */
 725
 726 void
 727 print_simple_rtl (FILE *outf, const_rtx x)
 728 {
 729   flag_simple = 1;
 730   print_rtl (outf, x);
 731   flag_simple = 0;
 732 }