-/* Allocate and read RTL for GNU C Compiler.
- Copyright (C) 1987, 1988, 1991, 1994, 1997, 1998, 1999, 2000
- Free Software Foundation, Inc.
+/* RTL utility routines.
+ Copyright (C) 1987, 1988, 1991, 1994, 1997, 1998, 1999, 2000, 2001, 2002,
+ 2003, 2004 Free Software Foundation, Inc.
-This file is part of GNU CC.
+This file is part of GCC.
-GNU CC is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 2, or (at your option) any later
+version.
-GNU CC is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
You should have received a copy of the GNU General Public License
-along with GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
-
-
+along with GCC; see the file COPYING. If not, write to the Free
+Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+02111-1307, USA. */
+
+/* This file is compiled twice: once for the generator programs
+ once for the compiler. */
+#ifdef GENERATOR_FILE
+#include "bconfig.h"
+#else
#include "config.h"
+#endif
+
#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
#include "rtl.h"
#include "real.h"
-#include "bitmap.h"
#include "ggc.h"
-#include "obstack.h"
-#include "toplev.h"
+#include "errors.h"
-#define obstack_chunk_alloc xmalloc
-#define obstack_chunk_free free
-
-/* Obstack used for allocating RTL objects.
- Between functions, this is the permanent_obstack.
- While parsing and expanding a function, this is maybepermanent_obstack
- so we can save it if it is an inline function.
- During optimization and output, this is function_obstack. */
-
-extern struct obstack *rtl_obstack;
\f
-/* Calculate the format for CONST_DOUBLE. This depends on the relative
- widths of HOST_WIDE_INT and REAL_VALUE_TYPE.
-
- We need to go out to e0wwwww, since REAL_ARITHMETIC assumes 16-bits
- per element in REAL_VALUE_TYPE.
-
- This is duplicated in gengenrtl.c.
-
- A number of places assume that there are always at least two 'w'
- slots in a CONST_DOUBLE, so we provide them even if one would suffice. */
-
-#ifdef REAL_ARITHMETIC
-#if MAX_LONG_DOUBLE_TYPE_SIZE == 96
-#define REAL_WIDTH (11*8 + HOST_BITS_PER_WIDE_INT)/HOST_BITS_PER_WIDE_INT
-#elif MAX_LONG_DOUBLE_TYPE_SIZE == 128
-#define REAL_WIDTH (19*8 + HOST_BITS_PER_WIDE_INT)/HOST_BITS_PER_WIDE_INT
-#elif HOST_FLOAT_FORMAT != TARGET_FLOAT_FORMAT
-#define REAL_WIDTH (7*8 + HOST_BITS_PER_WIDE_INT)/HOST_BITS_PER_WIDE_INT
-#endif
-#endif /* REAL_ARITHMETIC */
-
-#ifndef REAL_WIDTH
-#if HOST_BITS_PER_WIDE_INT*2 >= MAX_LONG_DOUBLE_TYPE_SIZE
-#define REAL_WIDTH 2
-#elif HOST_BITS_PER_WIDE_INT*3 >= MAX_LONG_DOUBLE_TYPE_SIZE
-#define REAL_WIDTH 3
-#elif HOST_BITS_PER_WIDE_INT*4 >= MAX_LONG_DOUBLE_TYPE_SIZE
-#define REAL_WIDTH 4
-#endif
-#endif /* REAL_WIDTH */
-
-#if REAL_WIDTH == 1
-#define CONST_DOUBLE_FORMAT "e0ww"
-#elif REAL_WIDTH == 2
-#define CONST_DOUBLE_FORMAT "e0ww"
-#elif REAL_WIDTH == 3
-#define CONST_DOUBLE_FORMAT "e0www"
-#elif REAL_WIDTH == 4
-#define CONST_DOUBLE_FORMAT "e0wwww"
-#elif REAL_WIDTH == 5
-#define CONST_DOUBLE_FORMAT "e0wwwww"
-#else
-#define CONST_DOUBLE_FORMAT /* nothing - will cause syntax error */
-#endif
-
/* Indexed by rtx code, gives number of operands for an rtx with that code.
Does NOT include rtx header data (code and links). */
#define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) sizeof FORMAT - 1 ,
-const int rtx_length[NUM_RTX_CODE + 1] = {
+const unsigned char rtx_length[NUM_RTX_CODE] = {
#include "rtl.def"
};
#define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) NAME ,
-const char * const rtx_name[] = {
+const char * const rtx_name[NUM_RTX_CODE] = {
#include "rtl.def" /* rtl expressions are documented here */
};
#undef DEF_RTL_EXPR
-/* Indexed by machine mode, gives the name of that machine mode.
- This name does not include the letters "mode". */
-
-#define DEF_MACHMODE(SYM, NAME, CLASS, SIZE, UNIT, WIDER) NAME,
-
-const char * const mode_name[(int) MAX_MACHINE_MODE + 1] = {
-#include "machmode.def"
- /* Add an extra field to avoid a core dump if someone tries to convert
- MAX_MACHINE_MODE to a string. */
- ""
-};
-
-#undef DEF_MACHMODE
-
-/* Indexed by machine mode, gives the length of the mode, in bytes.
- GET_MODE_CLASS uses this. */
-
-#define DEF_MACHMODE(SYM, NAME, CLASS, SIZE, UNIT, WIDER) CLASS,
-
-const enum mode_class mode_class[(int) MAX_MACHINE_MODE] = {
-#include "machmode.def"
-};
-
-#undef DEF_MACHMODE
-
-/* Indexed by machine mode, gives the length of the mode, in bytes.
- GET_MODE_SIZE uses this. */
-
-#define DEF_MACHMODE(SYM, NAME, CLASS, SIZE, UNIT, WIDER) SIZE,
-
-const unsigned int mode_size[(int) MAX_MACHINE_MODE] = {
-#include "machmode.def"
-};
-
-#undef DEF_MACHMODE
-
-/* Indexed by machine mode, gives the length of the mode's subunit.
- GET_MODE_UNIT_SIZE uses this. */
-
-#define DEF_MACHMODE(SYM, NAME, CLASS, SIZE, UNIT, WIDER) UNIT,
-
-const unsigned int mode_unit_size[(int) MAX_MACHINE_MODE] = {
-#include "machmode.def" /* machine modes are documented here */
-};
-
-#undef DEF_MACHMODE
-
-/* Indexed by machine mode, gives next wider natural mode
- (QI -> HI -> SI -> DI, etc.) Widening multiply instructions
- use this. */
-
-#define DEF_MACHMODE(SYM, NAME, CLASS, SIZE, UNIT, WIDER) \
- (unsigned char) WIDER,
-
-const unsigned char mode_wider_mode[(int) MAX_MACHINE_MODE] = {
-#include "machmode.def" /* machine modes are documented here */
-};
-
-#undef DEF_MACHMODE
-
-#define DEF_MACHMODE(SYM, NAME, CLASS, SIZE, UNIT, WIDER) \
- ((SIZE) * BITS_PER_UNIT >= HOST_BITS_PER_WIDE_INT) ? ~(unsigned HOST_WIDE_INT)0 : ((unsigned HOST_WIDE_INT) 1 << (SIZE) * BITS_PER_UNIT) - 1,
-
-/* Indexed by machine mode, gives mask of significant bits in mode. */
-
-const unsigned HOST_WIDE_INT mode_mask_array[(int) MAX_MACHINE_MODE] = {
-#include "machmode.def"
-};
-
-/* Indexed by mode class, gives the narrowest mode for each class.
- The Q modes are always of width 1 (2 for complex) - it is impossible
- for any mode to be narrower. */
-
-const enum machine_mode class_narrowest_mode[(int) MAX_MODE_CLASS] = {
- /* MODE_RANDOM */ VOIDmode,
- /* MODE_INT */ QImode,
- /* MODE_FLOAT */ QFmode,
- /* MODE_PARTIAL_INT */ PQImode,
- /* MODE_CC */ CCmode,
- /* MODE_COMPLEX_INT */ CQImode,
- /* MODE_COMPLEX_FLOAT */ QCmode
-};
-
-
/* Indexed by rtx code, gives a sequence of operand-types for
rtx's of that code. The sequence is a C string in which
each character describes one operand. */
-const char * const rtx_format[] = {
+const char * const rtx_format[NUM_RTX_CODE] = {
/* "*" undefined.
can cause a warning message
"0" field is unused (or used in a phase-dependent manner)
prints the string
"S" like "s", but optional:
the containing rtx may end before this operand
+ "T" like "s", but treated specially by the RTL reader;
+ only found in machine description patterns.
"e" a pointer to an rtl expression
prints the expression
"E" a pointer to a vector that points to a number of rtl expressions
"u" a pointer to another insn
prints the uid of the insn.
"b" is a pointer to a bitmap header.
- "t" is a tree pointer. */
+ "B" is a basic block pointer.
+ "t" is a tree pointer. */
#define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) FORMAT ,
#include "rtl.def" /* rtl expressions are defined here */
/* Indexed by rtx code, gives a character representing the "class" of
that rtx code. See rtl.def for documentation on the defined classes. */
-const char rtx_class[] = {
-#define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) CLASS,
+const enum rtx_class rtx_class[NUM_RTX_CODE] = {
+#define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) CLASS,
#include "rtl.def" /* rtl expressions are defined here */
#undef DEF_RTL_EXPR
};
+/* Indexed by rtx code, gives the size of the rtx in bytes. */
+
+const unsigned char rtx_size[NUM_RTX_CODE] = {
+#define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) \
+ ((ENUM) == CONST_INT || (ENUM) == CONST_DOUBLE \
+ ? RTX_HDR_SIZE + (sizeof FORMAT - 1) * sizeof (HOST_WIDE_INT) \
+ : RTX_HDR_SIZE + (sizeof FORMAT - 1) * sizeof (rtunion)),
+
+#include "rtl.def"
+#undef DEF_RTL_EXPR
+};
+
+/* Make sure all NOTE_INSN_* values are negative. */
+extern char NOTE_INSN_MAX_isnt_negative_adjust_NOTE_INSN_BIAS
+[NOTE_INSN_MAX < 0 ? 1 : -1];
+
/* Names for kinds of NOTEs and REG_NOTEs. */
-const char * const note_insn_name[] = { 0 , "NOTE_INSN_DELETED",
- "NOTE_INSN_BLOCK_BEG", "NOTE_INSN_BLOCK_END",
- "NOTE_INSN_LOOP_BEG", "NOTE_INSN_LOOP_END",
- "NOTE_INSN_FUNCTION_END", "NOTE_INSN_SETJMP",
- "NOTE_INSN_LOOP_CONT", "NOTE_INSN_LOOP_VTOP",
- "NOTE_INSN_PROLOGUE_END", "NOTE_INSN_EPILOGUE_BEG",
- "NOTE_INSN_DELETED_LABEL", "NOTE_INSN_FUNCTION_BEG",
- "NOTE_INSN_EH_REGION_BEG", "NOTE_INSN_EH_REGION_END",
- "NOTE_REPEATED_LINE_NUMBER", "NOTE_INSN_RANGE_START",
- "NOTE_INSN_RANGE_END", "NOTE_INSN_LIVE",
- "NOTE_INSN_BASIC_BLOCK" };
-
-const char * const reg_note_name[] = { "", "REG_DEAD", "REG_INC", "REG_EQUIV", "REG_WAS_0",
- "REG_EQUAL", "REG_RETVAL", "REG_LIBCALL",
- "REG_NONNEG", "REG_NO_CONFLICT", "REG_UNUSED",
- "REG_CC_SETTER", "REG_CC_USER", "REG_LABEL",
- "REG_DEP_ANTI", "REG_DEP_OUTPUT", "REG_BR_PROB",
- "REG_EXEC_COUNT", "REG_NOALIAS", "REG_SAVE_AREA",
- "REG_BR_PRED", "REG_EH_CONTEXT",
- "REG_FRAME_RELATED_EXPR", "REG_EH_REGION",
- "REG_EH_RETHROW", "REG_SAVE_NOTE" };
-
-static void fatal_with_file_and_line PARAMS ((FILE *, const char *, ...))
- ATTRIBUTE_PRINTF_2 ATTRIBUTE_NORETURN;
-static void fatal_expected_char PARAMS ((FILE *, int, int)) ATTRIBUTE_NORETURN;
-static void read_name PARAMS ((char *, FILE *));
-static const char *trim_filename PARAMS ((const char *));
+const char * const note_insn_name[NOTE_INSN_MAX - NOTE_INSN_BIAS] =
+{
+ "",
+#define DEF_INSN_NOTE(NAME) #NAME,
+#include "insn-notes.def"
+#undef DEF_INSN_NOTE
+};
+
+const char * const reg_note_name[REG_NOTE_MAX] =
+{
+#define DEF_REG_NOTE(NAME) #NAME,
+#include "reg-notes.def"
+#undef DEF_REG_NOTE
+};
+
+#ifdef GATHER_STATISTICS
+static int rtx_alloc_counts[(int) LAST_AND_UNUSED_RTX_CODE];
+static int rtx_alloc_sizes[(int) LAST_AND_UNUSED_RTX_CODE];
+static int rtvec_alloc_counts;
+static int rtvec_alloc_sizes;
+#endif
+
\f
/* Allocate an rtx vector of N elements.
Store the length, and initialize all elements to zero. */
rtvec
-rtvec_alloc (n)
- int n;
+rtvec_alloc (int n)
{
rtvec rt;
-
- if (ggc_p)
- rt = ggc_alloc_rtvec (n);
- else
- {
- int i;
-
- rt = (rtvec) obstack_alloc (rtl_obstack,
- sizeof (struct rtvec_def)
- + (( n - 1) * sizeof (rtx)));
- /* clear out the vector */
- for (i = 0; i < n; i++)
- rt->elem[i] = 0;
- }
+ rt = ggc_alloc_rtvec (n);
+ /* Clear out the vector. */
+ memset (&rt->elem[0], 0, n * sizeof (rtx));
PUT_NUM_ELEM (rt, n);
+
+#ifdef GATHER_STATISTICS
+ rtvec_alloc_counts++;
+ rtvec_alloc_sizes += n * sizeof (rtx);
+#endif
+
return rt;
}
all the rest is initialized to zero. */
rtx
-rtx_alloc (code)
- RTX_CODE code;
+rtx_alloc_stat (RTX_CODE code MEM_STAT_DECL)
{
rtx rt;
- if (ggc_p)
- rt = ggc_alloc_rtx (GET_RTX_LENGTH (code));
- else
- {
- register struct obstack *ob = rtl_obstack;
- register int nelts = GET_RTX_LENGTH (code);
- register int length = sizeof (struct rtx_def)
- + (nelts - 1) * sizeof (rtunion);
-
- /* This function is called more than any other in GCC, so we
- manipulate the obstack directly.
-
- Even though rtx objects are word aligned, we may be sharing
- an obstack with tree nodes, which may have to be double-word
- aligned. So align our length to the alignment mask in the
- obstack. */
-
- length = (length + ob->alignment_mask) & ~ ob->alignment_mask;
-
- if (ob->chunk_limit - ob->next_free < length)
- _obstack_newchunk (ob, length);
- rt = (rtx)ob->object_base;
- ob->next_free += length;
- ob->object_base = ob->next_free;
-
- /* We want to clear everything up to the FLD array. Normally,
- this is one int, but we don't want to assume that and it
- isn't very portable anyway; this is. */
-
- memset (rt, 0, sizeof (struct rtx_def) - sizeof (rtunion));
- }
+ rt = (rtx) ggc_alloc_typed_stat (gt_ggc_e_7rtx_def,
+ RTX_SIZE (code) PASS_MEM_STAT);
+ /* We want to clear everything up to the FLD array. Normally, this
+ is one int, but we don't want to assume that and it isn't very
+ portable anyway; this is. */
+
+ memset (rt, 0, RTX_HDR_SIZE);
PUT_CODE (rt, code);
- return rt;
-}
-/* Free the rtx X and all RTL allocated since X. */
+#ifdef GATHER_STATISTICS
+ rtx_alloc_counts[code]++;
+ rtx_alloc_sizes[code] += RTX_SIZE (code);
+#endif
-void
-rtx_free (x)
- rtx x;
-{
- if (!ggc_p)
- obstack_free (rtl_obstack, x);
+ return rt;
}
+
\f
/* Create a new copy of an rtx.
Recursively copies the operands of the rtx,
except for those few rtx codes that are sharable. */
rtx
-copy_rtx (orig)
- register rtx orig;
+copy_rtx (rtx orig)
{
- register rtx copy;
- register int i, j;
- register RTX_CODE code;
- register const char *format_ptr;
+ rtx copy;
+ int i, j;
+ RTX_CODE code;
+ const char *format_ptr;
code = GET_CODE (orig);
switch (code)
{
case REG:
- case QUEUED:
case CONST_INT:
case CONST_DOUBLE:
+ case CONST_VECTOR:
case SYMBOL_REF:
case CODE_LABEL:
case PC:
case CC0:
case SCRATCH:
/* SCRATCH must be shared because they represent distinct values. */
- case ADDRESSOF:
return orig;
+ case CLOBBER:
+ if (REG_P (XEXP (orig, 0)) && REGNO (XEXP (orig, 0)) < FIRST_PSEUDO_REGISTER)
+ return orig;
+ break;
case CONST:
/* CONST can be shared if it contains a SYMBOL_REF. If it contains
all fields need copying, and then clear the fields that should
not be copied. That is the sensible default behavior, and forces
us to explicitly document why we are *not* copying a flag. */
- memcpy (copy, orig, sizeof (struct rtx_def) - sizeof (rtunion));
+ memcpy (copy, orig, RTX_HDR_SIZE);
/* We do not copy the USED flag, which is used as a mark bit during
walks over the RTL. */
- copy->used = 0;
+ RTX_FLAG (copy, used) = 0;
/* We do not copy FRAME_RELATED for INSNs. */
- if (GET_RTX_CLASS (code) == 'i')
- copy->frame_related = 0;
- copy->jump = orig->jump;
- copy->call = orig->call;
+ if (INSN_P (orig))
+ RTX_FLAG (copy, frame_related) = 0;
+ RTX_FLAG (copy, jump) = RTX_FLAG (orig, jump);
+ RTX_FLAG (copy, call) = RTX_FLAG (orig, call);
format_ptr = GET_RTX_FORMAT (GET_CODE (copy));
for (i = 0; i < GET_RTX_LENGTH (GET_CODE (copy)); i++)
{
- copy->fld[i] = orig->fld[i];
+ copy->u.fld[i] = orig->u.fld[i];
switch (*format_ptr++)
{
case 'e':
}
break;
- case 'b':
- {
- bitmap new_bits = BITMAP_OBSTACK_ALLOC (rtl_obstack);
- bitmap_copy (new_bits, XBITMAP (orig, i));
- XBITMAP (copy, i) = new_bits;
- break;
- }
-
case 't':
case 'w':
case 'i':
case 's':
case 'S':
+ case 'T':
case 'u':
+ case 'B':
case '0':
/* These are left unchanged. */
break;
-
- default:
- abort ();
- }
- }
- return copy;
-}
-
-/* Similar to `copy_rtx' except that if MAY_SHARE is present, it is
- placed in the result directly, rather than being copied. */
-
-rtx
-copy_most_rtx (orig, may_share)
- register rtx orig;
- register rtx may_share;
-{
- register rtx copy;
- register int i, j;
- register RTX_CODE code;
- register const char *format_ptr;
-
- if (orig == may_share)
- return orig;
-
- code = GET_CODE (orig);
-
- switch (code)
- {
- case REG:
- case QUEUED:
- case CONST_INT:
- case CONST_DOUBLE:
- case SYMBOL_REF:
- case CODE_LABEL:
- case PC:
- case CC0:
- return orig;
- default:
- break;
- }
-
- copy = rtx_alloc (code);
- PUT_MODE (copy, GET_MODE (orig));
- copy->in_struct = orig->in_struct;
- copy->volatil = orig->volatil;
- copy->unchanging = orig->unchanging;
- copy->integrated = orig->integrated;
-
- format_ptr = GET_RTX_FORMAT (GET_CODE (copy));
-
- for (i = 0; i < GET_RTX_LENGTH (GET_CODE (copy)); i++)
- {
- switch (*format_ptr++)
- {
- case 'e':
- XEXP (copy, i) = XEXP (orig, i);
- if (XEXP (orig, i) != NULL && XEXP (orig, i) != may_share)
- XEXP (copy, i) = copy_most_rtx (XEXP (orig, i), may_share);
- break;
-
- case 'u':
- XEXP (copy, i) = XEXP (orig, i);
- break;
-
- case 'E':
- case 'V':
- XVEC (copy, i) = XVEC (orig, i);
- if (XVEC (orig, i) != NULL)
- {
- XVEC (copy, i) = rtvec_alloc (XVECLEN (orig, i));
- for (j = 0; j < XVECLEN (copy, i); j++)
- XVECEXP (copy, i, j)
- = copy_most_rtx (XVECEXP (orig, i, j), may_share);
- }
- break;
-
- case 'w':
- XWINT (copy, i) = XWINT (orig, i);
- break;
-
- case 'n':
- case 'i':
- XINT (copy, i) = XINT (orig, i);
- break;
-
- case 't':
- XTREE (copy, i) = XTREE (orig, i);
- break;
-
- case 's':
- case 'S':
- XSTR (copy, i) = XSTR (orig, i);
- break;
-
- case '0':
- /* Copy this through the wide int field; that's safest. */
- X0WINT (copy, i) = X0WINT (orig, i);
- break;
default:
- abort ();
+ gcc_unreachable ();
}
}
return copy;
}
/* Create a new copy of an rtx. Only copy just one level. */
+
rtx
-shallow_copy_rtx (orig)
- rtx orig;
+shallow_copy_rtx_stat (rtx orig MEM_STAT_DECL)
{
- register int i;
- register RTX_CODE code = GET_CODE (orig);
- register rtx copy = rtx_alloc (code);
-
- PUT_MODE (copy, GET_MODE (orig));
- copy->in_struct = orig->in_struct;
- copy->volatil = orig->volatil;
- copy->unchanging = orig->unchanging;
- copy->integrated = orig->integrated;
-
- for (i = 0; i < GET_RTX_LENGTH (code); i++)
- copy->fld[i] = orig->fld[i];
+ rtx copy;
+ copy = (rtx) ggc_alloc_typed_stat (gt_ggc_e_7rtx_def,
+ RTX_SIZE (GET_CODE (orig)) PASS_MEM_STAT);
+ memcpy (copy, orig, RTX_SIZE (GET_CODE (orig)));
return copy;
}
\f
-/* This is 1 until after the rtl generation pass. */
-int rtx_equal_function_value_matters;
+/* Nonzero when we are generating CONCATs. */
+int generating_concat_p;
+
+/* Nonzero when we are expanding trees to RTL. */
+int currently_expanding_to_rtl;
+
\f
/* Return 1 if X and Y are identical-looking rtx's.
This is the Lisp function EQUAL for rtx arguments. */
int
-rtx_equal_p (x, y)
- rtx x, y;
+rtx_equal_p (rtx x, rtx y)
{
- register int i;
- register int j;
- register enum rtx_code code;
- register const char *fmt;
+ int i;
+ int j;
+ enum rtx_code code;
+ const char *fmt;
if (x == y)
return 1;
if (GET_MODE (x) != GET_MODE (y))
return 0;
- /* REG, LABEL_REF, and SYMBOL_REF can be compared nonrecursively. */
-
- if (code == REG)
- /* Until rtl generation is complete, don't consider a reference to the
- return register of the current function the same as the return from a
- called function. This eases the job of function integration. Once the
- distinction is no longer needed, they can be considered equivalent. */
- return (REGNO (x) == REGNO (y)
- && (! rtx_equal_function_value_matters
- || REG_FUNCTION_VALUE_P (x) == REG_FUNCTION_VALUE_P (y)));
- else if (code == LABEL_REF)
- return XEXP (x, 0) == XEXP (y, 0);
- else if (code == SYMBOL_REF)
- return XSTR (x, 0) == XSTR (y, 0);
- else if (code == SCRATCH || code == CONST_DOUBLE)
- return 0;
+ /* Some RTL can be compared nonrecursively. */
+ switch (code)
+ {
+ case REG:
+ return (REGNO (x) == REGNO (y));
+
+ case LABEL_REF:
+ return XEXP (x, 0) == XEXP (y, 0);
+
+ case SYMBOL_REF:
+ return XSTR (x, 0) == XSTR (y, 0);
+
+ case SCRATCH:
+ case CONST_DOUBLE:
+ case CONST_INT:
+ case CONST_VECTOR:
+ return 0;
+
+ default:
+ break;
+ }
/* Compare the elements. If any pair of corresponding elements
- fail to match, return 0 for the whole things. */
+ fail to match, return 0 for the whole thing. */
fmt = GET_RTX_FORMAT (code);
for (i = GET_RTX_LENGTH (code) - 1; i >= 0; i--)
case 'S':
case 's':
- if (strcmp (XSTR (x, i), XSTR (y, i)))
+ if ((XSTR (x, i) || XSTR (y, i))
+ && (! XSTR (x, i) || ! XSTR (y, i)
+ || strcmp (XSTR (x, i), XSTR (y, i))))
return 0;
break;
contain anything but integers and other rtx's,
except for within LABEL_REFs and SYMBOL_REFs. */
default:
- abort ();
+ gcc_unreachable ();
}
}
return 1;
}
-\f
-/* Subroutines of read_rtx. */
-
-/* The current line number for the file. */
-int read_rtx_lineno = 1;
-
-/* The filename for aborting with file and line. */
-const char *read_rtx_filename = "<unknown>";
-
-static void
-fatal_with_file_and_line VPARAMS ((FILE *infile, const char *msg, ...))
-{
-#ifndef ANSI_PROTOTYPES
- FILE *infile;
- const char *msg;
-#endif
- va_list ap;
- char context[64];
- size_t i;
- int c;
-
- VA_START (ap, msg);
-
-#ifndef ANSI_PROTOTYPES
- infile = va_arg (ap, FILE *);
- msg = va_arg (ap, const char *);
-#endif
-
- fprintf (stderr, "%s:%d: ", read_rtx_filename, read_rtx_lineno);
- vfprintf (stderr, msg, ap);
- putc ('\n', stderr);
-
- /* Gather some following context. */
- for (i = 0; i < sizeof(context)-1; ++i)
- {
- c = getc (infile);
- if (c == EOF)
- break;
- if (c == '\r' || c == '\n')
- break;
- context[i] = c;
- }
- context[i] = '\0';
-
- fprintf (stderr, "%s:%d: following context is `%s'\n",
- read_rtx_filename, read_rtx_lineno, context);
-
- va_end (ap);
- exit (1);
-}
-
-/* Dump code after printing a message. Used when read_rtx finds
- invalid data. */
-
-static void
-fatal_expected_char (infile, expected_c, actual_c)
- FILE *infile;
- int expected_c, actual_c;
-{
- fatal_with_file_and_line (infile, "expected character `%c', found `%c'",
- expected_c, actual_c);
-}
-
-/* Read chars from INFILE until a non-whitespace char
- and return that. Comments, both Lisp style and C style,
- are treated as whitespace.
- Tools such as genflags use this function. */
-
-int
-read_skip_spaces (infile)
- FILE *infile;
-{
- register int c;
- while (1)
- {
- c = getc (infile);
- switch (c)
- {
- case '\n':
- read_rtx_lineno++;
- break;
-
- case ' ': case '\t': case '\f': case '\r':
- break;
-
- case ';':
- do
- c = getc (infile);
- while (c != '\n' && c != EOF);
- read_rtx_lineno++;
- break;
-
- case '/':
- {
- register int prevc;
- c = getc (infile);
- if (c != '*')
- fatal_expected_char (infile, '*', c);
-
- prevc = 0;
- while ((c = getc (infile)) && c != EOF)
- {
- if (c == '\n')
- read_rtx_lineno++;
- else if (prevc == '*' && c == '/')
- break;
- prevc = c;
- }
- }
- break;
-
- default:
- return c;
- }
- }
-}
-
-/* Read an rtx code name into the buffer STR[].
- It is terminated by any of the punctuation chars of rtx printed syntax. */
-
-static void
-read_name (str, infile)
- char *str;
- FILE *infile;
-{
- register char *p;
- register int c;
-
- c = read_skip_spaces(infile);
-
- p = str;
- while (1)
- {
- if (c == ' ' || c == '\n' || c == '\t' || c == '\f')
- break;
- if (c == ':' || c == ')' || c == ']' || c == '"' || c == '/'
- || c == '(' || c == '[')
- {
- ungetc (c, infile);
- break;
- }
- *p++ = c;
- c = getc (infile);
- }
- if (p == str)
- fatal_with_file_and_line (infile, "missing name or number");
- if (c == '\n')
- read_rtx_lineno++;
-
- *p = 0;
-}
-\f
-/* Provide a version of a function to read a long long if the system does
- not provide one. */
-#if HOST_BITS_PER_WIDE_INT > HOST_BITS_PER_LONG && !defined(HAVE_ATOLL) && !defined(HAVE_ATOQ)
-HOST_WIDE_INT
-atoll(p)
- const char *p;
-{
- int neg = 0;
- HOST_WIDE_INT tmp_wide;
-
- while (ISSPACE(*p))
- p++;
- if (*p == '-')
- neg = 1, p++;
- else if (*p == '+')
- p++;
-
- tmp_wide = 0;
- while (ISDIGIT(*p))
- {
- HOST_WIDE_INT new_wide = tmp_wide*10 + (*p - '0');
- if (new_wide < tmp_wide)
- {
- /* Return INT_MAX equiv on overflow. */
- tmp_wide = (~(unsigned HOST_WIDE_INT)0) >> 1;
- break;
- }
- tmp_wide = new_wide;
- p++;
- }
-
- if (neg)
- tmp_wide = -tmp_wide;
- return tmp_wide;
-}
-#endif
-/* Read an rtx in printed representation from INFILE
- and return an actual rtx in core constructed accordingly.
- read_rtx is not used in the compiler proper, but rather in
- the utilities gen*.c that construct C code from machine descriptions. */
-
-rtx
-read_rtx (infile)
- FILE *infile;
+void dump_rtx_statistics (void)
{
- register int i, j, list_counter;
- RTX_CODE tmp_code;
- register const char *format_ptr;
- /* tmp_char is a buffer used for reading decimal integers
- and names of rtx types and machine modes.
- Therefore, 256 must be enough. */
- char tmp_char[256];
- rtx return_rtx;
- register int c;
- int tmp_int;
- HOST_WIDE_INT tmp_wide;
-
- /* Linked list structure for making RTXs: */
- struct rtx_list
- {
- struct rtx_list *next;
- rtx value; /* Value of this node. */
- };
-
- c = read_skip_spaces (infile); /* Should be open paren. */
- if (c != '(')
- fatal_expected_char (infile, '(', c);
-
- read_name (tmp_char, infile);
-
- tmp_code = UNKNOWN;
-
- for (i = 0; i < NUM_RTX_CODE; i++)
- if (! strcmp (tmp_char, GET_RTX_NAME (i)))
+#ifdef GATHER_STATISTICS
+ int i;
+ int total_counts = 0;
+ int total_sizes = 0;
+ fprintf (stderr, "\nRTX Kind Count Bytes\n");
+ fprintf (stderr, "---------------------------------------\n");
+ for (i = 0; i < LAST_AND_UNUSED_RTX_CODE; i++)
+ if (rtx_alloc_counts[i])
{
- tmp_code = (RTX_CODE) i; /* get value for name */
- break;
+ fprintf (stderr, "%-20s %7d %10d\n", GET_RTX_NAME (i),
+ rtx_alloc_counts[i], rtx_alloc_sizes[i]);
+ total_counts += rtx_alloc_counts[i];
+ total_sizes += rtx_alloc_sizes[i];
}
-
- if (tmp_code == UNKNOWN)
- fatal_with_file_and_line (infile, "unknown rtx code `%s'", tmp_char);
-
- /* (NIL) stands for an expression that isn't there. */
- if (tmp_code == NIL)
- {
- /* Discard the closeparen. */
- while ((c = getc (infile)) && c != ')')
- ;
-
- return 0;
- }
-
- /* If we end up with an insn expression then we free this space below. */
- return_rtx = rtx_alloc (tmp_code);
- format_ptr = GET_RTX_FORMAT (GET_CODE (return_rtx));
-
- /* If what follows is `: mode ', read it and
- store the mode in the rtx. */
-
- i = read_skip_spaces (infile);
- if (i == ':')
+ if (rtvec_alloc_counts)
{
- read_name (tmp_char, infile);
- for (j = 0; j < NUM_MACHINE_MODES; j++)
- if (! strcmp (GET_MODE_NAME (j), tmp_char))
- break;
-
- if (j == MAX_MACHINE_MODE)
- fatal_with_file_and_line (infile, "unknown mode `%s'", tmp_char);
-
- PUT_MODE (return_rtx, (enum machine_mode) j);
+ fprintf (stderr, "%-20s %7d %10d\n", "rtvec",
+ rtvec_alloc_counts, rtvec_alloc_sizes);
+ total_counts += rtvec_alloc_counts;
+ total_sizes += rtvec_alloc_sizes;
}
- else
- ungetc (i, infile);
-
- for (i = 0; i < GET_RTX_LENGTH (GET_CODE (return_rtx)); i++)
- switch (*format_ptr++)
- {
- /* 0 means a field for internal use only.
- Don't expect it to be present in the input. */
- case '0':
- break;
-
- case 'e':
- case 'u':
- XEXP (return_rtx, i) = read_rtx (infile);
- break;
-
- case 'V':
- /* 'V' is an optional vector: if a closeparen follows,
- just store NULL for this element. */
- c = read_skip_spaces (infile);
- ungetc (c, infile);
- if (c == ')')
- {
- XVEC (return_rtx, i) = 0;
- break;
- }
- /* Now process the vector. */
-
- case 'E':
- {
- register struct rtx_list *next_rtx, *rtx_list_link;
- struct rtx_list *list_rtx = NULL;
-
- c = read_skip_spaces (infile);
- if (c != '[')
- fatal_expected_char (infile, '[', c);
-
- /* add expressions to a list, while keeping a count */
- next_rtx = NULL;
- list_counter = 0;
- while ((c = read_skip_spaces (infile)) && c != ']')
- {
- ungetc (c, infile);
- list_counter++;
- rtx_list_link = (struct rtx_list *)
- alloca (sizeof (struct rtx_list));
- rtx_list_link->value = read_rtx (infile);
- if (next_rtx == 0)
- list_rtx = rtx_list_link;
- else
- next_rtx->next = rtx_list_link;
- next_rtx = rtx_list_link;
- rtx_list_link->next = 0;
- }
- /* get vector length and allocate it */
- XVEC (return_rtx, i) = (list_counter
- ? rtvec_alloc (list_counter) : NULL_RTVEC);
- if (list_counter > 0)
- {
- next_rtx = list_rtx;
- for (j = 0; j < list_counter; j++,
- next_rtx = next_rtx->next)
- XVECEXP (return_rtx, i, j) = next_rtx->value;
- }
- /* close bracket gotten */
- }
- break;
-
- case 'S':
- /* 'S' is an optional string: if a closeparen follows,
- just store NULL for this element. */
- c = read_skip_spaces (infile);
- ungetc (c, infile);
- if (c == ')')
- {
- XSTR (return_rtx, i) = 0;
- break;
- }
-
- case 's':
- {
- int saw_paren = 0;
- register char *stringbuf;
-
- c = read_skip_spaces (infile);
- if (c == '(')
- {
- saw_paren = 1;
- c = read_skip_spaces (infile);
- }
- if (c != '"')
- fatal_expected_char (infile, '"', c);
-
- while (1)
- {
- c = getc (infile); /* Read the string */
- if (c == '\n')
- read_rtx_lineno++;
- if (c == '\\')
- {
- c = getc (infile); /* Read the string */
- /* \; makes stuff for a C string constant containing
- newline and tab. */
- if (c == ';')
- {
- obstack_grow (rtl_obstack, "\\n\\t", 4);
- continue;
- }
- if (c == '\n')
- read_rtx_lineno++;
- }
- else if (c == '"')
- break;
-
- obstack_1grow (rtl_obstack, c);
- }
-
- obstack_1grow (rtl_obstack, 0);
- stringbuf = (char *) obstack_finish (rtl_obstack);
-
- if (saw_paren)
- {
- c = read_skip_spaces (infile);
- if (c != ')')
- fatal_expected_char (infile, ')', c);
- }
- XSTR (return_rtx, i) = stringbuf;
- }
- break;
-
- case 'w':
- read_name (tmp_char, infile);
-#if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT
- tmp_wide = atoi (tmp_char);
-#else
-#if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG
- tmp_wide = atol (tmp_char);
-#else
- /* Prefer atoll over atoq, since the former is in the ISO C9X draft.
- But prefer not to use our hand-rolled function above either. */
-#if defined(HAVE_ATOLL) || !defined(HAVE_ATOQ)
- tmp_wide = atoll (tmp_char);
-#else
- tmp_wide = atoq (tmp_char);
-#endif
-#endif
-#endif
- XWINT (return_rtx, i) = tmp_wide;
- break;
-
- case 'i':
- case 'n':
- read_name (tmp_char, infile);
- tmp_int = atoi (tmp_char);
- XINT (return_rtx, i) = tmp_int;
- break;
-
- default:
- fprintf (stderr,
- "switch format wrong in rtl.read_rtx(). format was: %c.\n",
- format_ptr[-1]);
- fprintf (stderr, "\tfile position: %ld\n", ftell (infile));
- abort ();
- }
-
- c = read_skip_spaces (infile);
- if (c != ')')
- fatal_expected_char (infile, ')', c);
-
- return return_rtx;
+ fprintf (stderr, "---------------------------------------\n");
+ fprintf (stderr, "%-20s %7d %10d\n",
+ "Total", total_counts, total_sizes);
+ fprintf (stderr, "---------------------------------------\n");
+#endif
}
-
+\f
#if defined ENABLE_RTL_CHECKING && (GCC_VERSION >= 2007)
void
-rtl_check_failed_bounds (r, n, file, line, func)
- rtx r;
- int n;
- const char *file;
- int line;
- const char *func;
+rtl_check_failed_bounds (rtx r, int n, const char *file, int line,
+ const char *func)
{
- error ("RTL check: access of elt %d of `%s' with last elt %d",
- n, GET_RTX_NAME (GET_CODE (r)), GET_RTX_LENGTH (GET_CODE (r))-1);
- fancy_abort (file, line, func);
+ internal_error
+ ("RTL check: access of elt %d of `%s' with last elt %d in %s, at %s:%d",
+ n, GET_RTX_NAME (GET_CODE (r)), GET_RTX_LENGTH (GET_CODE (r)) - 1,
+ func, trim_filename (file), line);
}
void
-rtl_check_failed_type1 (r, n, c1, file, line, func)
- rtx r;
- int n;
- int c1;
- const char *file;
- int line;
- const char *func;
+rtl_check_failed_type1 (rtx r, int n, int c1, const char *file, int line,
+ const char *func)
{
- error ("RTL check: expected elt %d type '%c', have '%c' (rtx %s)",
- n, c1, GET_RTX_FORMAT (GET_CODE (r))[n], GET_RTX_NAME (GET_CODE (r)));
- fancy_abort (file, line, func);
+ internal_error
+ ("RTL check: expected elt %d type '%c', have '%c' (rtx %s) in %s, at %s:%d",
+ n, c1, GET_RTX_FORMAT (GET_CODE (r))[n], GET_RTX_NAME (GET_CODE (r)),
+ func, trim_filename (file), line);
}
void
-rtl_check_failed_type2 (r, n, c1, c2, file, line, func)
- rtx r;
- int n;
- int c1;
- int c2;
- const char *file;
- int line;
- const char *func;
+rtl_check_failed_type2 (rtx r, int n, int c1, int c2, const char *file,
+ int line, const char *func)
{
- error ("RTL check: expected elt %d type '%c' or '%c', have '%c' (rtx %s)",
- n, c1, c2,
- GET_RTX_FORMAT (GET_CODE (r))[n], GET_RTX_NAME (GET_CODE(r)));
- fancy_abort (file, line, func);
+ internal_error
+ ("RTL check: expected elt %d type '%c' or '%c', have '%c' (rtx %s) in %s, at %s:%d",
+ n, c1, c2, GET_RTX_FORMAT (GET_CODE (r))[n], GET_RTX_NAME (GET_CODE (r)),
+ func, trim_filename (file), line);
}
void
-rtl_check_failed_code1 (r, code, file, line, func)
- rtx r;
- enum rtx_code code;
- const char *file;
- int line;
- const char *func;
+rtl_check_failed_code1 (rtx r, enum rtx_code code, const char *file,
+ int line, const char *func)
{
- error ("RTL check: expected code `%s', have `%s'",
- GET_RTX_NAME (code), GET_RTX_NAME (GET_CODE (r)));
- fancy_abort (file, line, func);
+ internal_error ("RTL check: expected code `%s', have `%s' in %s, at %s:%d",
+ GET_RTX_NAME (code), GET_RTX_NAME (GET_CODE (r)), func,
+ trim_filename (file), line);
}
void
-rtl_check_failed_code2 (r, code1, code2, file, line, func)
- rtx r;
- enum rtx_code code1, code2;
- const char *file;
- int line;
- const char *func;
+rtl_check_failed_code2 (rtx r, enum rtx_code code1, enum rtx_code code2,
+ const char *file, int line, const char *func)
{
- error ("RTL check: expected code `%s' or `%s', have `%s'",
- GET_RTX_NAME (code1), GET_RTX_NAME (code2),
- GET_RTX_NAME (GET_CODE (r)));
- fancy_abort (file, line, func);
+ internal_error
+ ("RTL check: expected code `%s' or `%s', have `%s' in %s, at %s:%d",
+ GET_RTX_NAME (code1), GET_RTX_NAME (code2), GET_RTX_NAME (GET_CODE (r)),
+ func, trim_filename (file), line);
}
/* XXX Maybe print the vector? */
void
-rtvec_check_failed_bounds (r, n, file, line, func)
- rtvec r;
- int n;
- const char *file;
- int line;
- const char *func;
+rtvec_check_failed_bounds (rtvec r, int n, const char *file, int line,
+ const char *func)
{
- error ("RTL check: access of elt %d of vector with last elt %d",
- n, GET_NUM_ELEM (r)-1);
- fancy_abort (file, line, func);
+ internal_error
+ ("RTL check: access of elt %d of vector with last elt %d in %s, at %s:%d",
+ n, GET_NUM_ELEM (r) - 1, func, trim_filename (file), line);
}
#endif /* ENABLE_RTL_CHECKING */
-/* These are utility functions used by fatal-error functions all over the
- code. rtl.c happens to be linked by all the programs that need them,
- so these are here. In the future we want to break out all error handling
- to its own module. */
-
-/* Given a partial pathname as input, return another pathname that
- shares no directory elements with the pathname of __FILE__. This
- is used by fancy_abort() to print `Internal compiler error in expr.c'
- instead of `Internal compiler error in ../../egcs/gcc/expr.c'. */
-static const char *
-trim_filename (name)
- const char *name;
-{
- static const char this_file[] = __FILE__;
- const char *p = name, *q = this_file;
-
- while (*p == *q && *p != 0 && *q != 0) p++, q++;
- while (p > name && p[-1] != DIR_SEPARATOR
-#ifdef DIR_SEPARATOR_2
- && p[-1] != DIR_SEPARATOR_2
-#endif
- )
- p--;
-
- return p;
-}
-
-/* Report an internal compiler error in a friendly manner and without
- dumping core. */
-
+#if defined ENABLE_RTL_FLAG_CHECKING
void
-fancy_abort (file, line, function)
- const char *file;
- int line;
- const char *function;
+rtl_check_failed_flag (const char *name, rtx r, const char *file,
+ int line, const char *func)
{
- if (function == NULL)
- function = "?";
- fatal (
-"Internal compiler error in `%s', at %s:%d\n\
-Please submit a full bug report.\n\
-See %s for instructions.",
- function, trim_filename (file), line, GCCBUGURL);
+ internal_error
+ ("RTL flag check: %s used with unexpected rtx code `%s' in %s, at %s:%d",
+ name, GET_RTX_NAME (GET_CODE (r)), func, trim_filename (file), line);
}
+#endif /* ENABLE_RTL_FLAG_CHECKING */
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