/* RTL utility routines.
Copyright (C) 1987, 1988, 1991, 1994, 1997, 1998, 1999, 2000, 2001, 2002,
- 2003, 2004, 2005 Free Software Foundation, Inc.
+ 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
This file is part of GCC.
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
+Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
for more details.
You should have received a copy of the GNU General Public License
-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. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
/* This file is compiled twice: once for the generator programs
once for the compiler. */
/* Indexed by rtx code, gives the size of the rtx in bytes. */
-const unsigned char rtx_size[NUM_RTX_CODE] = {
+const unsigned char rtx_code_size[NUM_RTX_CODE] = {
#define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) \
- ((ENUM) == CONST_INT || (ENUM) == CONST_DOUBLE \
+ ((ENUM) == CONST_INT || (ENUM) == CONST_DOUBLE || (ENUM) == CONST_FIXED\
? RTX_HDR_SIZE + (sizeof FORMAT - 1) * sizeof (HOST_WIDE_INT) \
: RTX_HDR_SIZE + (sizeof FORMAT - 1) * sizeof (rtunion)),
#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[NOTE_INSN_MAX - NOTE_INSN_BIAS] =
+const char * const note_insn_name[NOTE_INSN_MAX] =
{
- "",
#define DEF_INSN_NOTE(NAME) #NAME,
#include "insn-notes.def"
#undef DEF_INSN_NOTE
return rt;
}
+/* Return the number of bytes occupied by rtx value X. */
+
+unsigned int
+rtx_size (const_rtx x)
+{
+ if (GET_CODE (x) == SYMBOL_REF && SYMBOL_REF_HAS_BLOCK_INFO_P (x))
+ return RTX_HDR_SIZE + sizeof (struct block_symbol);
+ return RTX_CODE_SIZE (GET_CODE (x));
+}
+
/* Allocate an rtx of code CODE. The CODE is stored in the rtx;
all the rest is initialized to zero. */
{
rtx rt;
- rt = (rtx) ggc_alloc_zone_pass_stat (RTX_SIZE (code), &rtl_zone);
+ rt = (rtx) ggc_alloc_zone_pass_stat (RTX_CODE_SIZE (code), &rtl_zone);
/* 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
#ifdef GATHER_STATISTICS
rtx_alloc_counts[code]++;
- rtx_alloc_sizes[code] += RTX_SIZE (code);
+ rtx_alloc_sizes[code] += RTX_CODE_SIZE (code);
#endif
return rt;
}
\f
+/* Return true if ORIG is a sharable CONST. */
+
+bool
+shared_const_p (const_rtx orig)
+{
+ gcc_assert (GET_CODE (orig) == CONST);
+
+ /* CONST can be shared if it contains a SYMBOL_REF. If it contains
+ a LABEL_REF, it isn't sharable. */
+ return (GET_CODE (XEXP (orig, 0)) == PLUS
+ && GET_CODE (XEXP (XEXP (orig, 0), 0)) == SYMBOL_REF
+ && GET_CODE (XEXP (XEXP (orig, 0), 1)) == CONST_INT);
+}
+
+
/* Create a new copy of an rtx.
Recursively copies the operands of the rtx,
except for those few rtx codes that are sharable. */
case REG:
case CONST_INT:
case CONST_DOUBLE:
+ case CONST_FIXED:
case CONST_VECTOR:
case SYMBOL_REF:
case CODE_LABEL:
break;
case CONST:
- /* CONST can be shared if it contains a SYMBOL_REF. If it contains
- a LABEL_REF, it isn't sharable. */
- if (GET_CODE (XEXP (orig, 0)) == PLUS
- && GET_CODE (XEXP (XEXP (orig, 0), 0)) == SYMBOL_REF
- && GET_CODE (XEXP (XEXP (orig, 0), 1)) == CONST_INT)
+ if (shared_const_p (orig))
return orig;
break;
break;
}
- copy = rtx_alloc (code);
-
- /* Copy the various flags, and other information. We assume that
- all fields need copying, and then clear the fields that should
+ /* Copy the various flags, fields, and other information. We assume
+ that 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, RTX_HDR_SIZE);
+ copy = shallow_copy_rtx (orig);
/* We do not copy the USED flag, which is used as a mark bit during
walks over the RTL. */
format_ptr = GET_RTX_FORMAT (GET_CODE (copy));
for (i = 0; i < GET_RTX_LENGTH (GET_CODE (copy)); i++)
- {
- copy->u.fld[i] = orig->u.fld[i];
- switch (*format_ptr++)
- {
- case 'e':
- if (XEXP (orig, i) != NULL)
- XEXP (copy, i) = copy_rtx (XEXP (orig, i));
- break;
-
- case 'E':
- case 'V':
- 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_rtx (XVECEXP (orig, i, j));
- }
- 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:
- gcc_unreachable ();
- }
- }
+ switch (*format_ptr++)
+ {
+ case 'e':
+ if (XEXP (orig, i) != NULL)
+ XEXP (copy, i) = copy_rtx (XEXP (orig, i));
+ break;
+
+ case 'E':
+ case 'V':
+ 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_rtx (XVECEXP (orig, i, j));
+ }
+ 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:
+ gcc_unreachable ();
+ }
return copy;
}
/* Create a new copy of an rtx. Only copy just one level. */
rtx
-shallow_copy_rtx_stat (rtx orig MEM_STAT_DECL)
+shallow_copy_rtx_stat (const_rtx orig MEM_STAT_DECL)
{
- rtx copy;
-
- copy = (rtx) ggc_alloc_zone_pass_stat (RTX_SIZE (GET_CODE (orig)),
- &rtl_zone);
- memcpy (copy, orig, RTX_SIZE (GET_CODE (orig)));
- return copy;
+ const unsigned int size = rtx_size (orig);
+ rtx const copy = (rtx) ggc_alloc_zone_pass_stat (size, &rtl_zone);
+ return memcpy (copy, orig, size);
}
\f
/* Nonzero when we are generating CONCATs. */
This is the Lisp function EQUAL for rtx arguments. */
int
-rtx_equal_p (rtx x, rtx y)
+rtx_equal_p (const_rtx x, const_rtx y)
{
int i;
int j;
case SCRATCH:
case CONST_DOUBLE:
case CONST_INT:
+ case CONST_FIXED:
return 0;
default:
return 1;
}
-void dump_rtx_statistics (void)
+void
+dump_rtx_statistics (void)
{
#ifdef GATHER_STATISTICS
int i;
\f
#if defined ENABLE_RTL_CHECKING && (GCC_VERSION >= 2007)
void
-rtl_check_failed_bounds (rtx r, int n, const char *file, int line,
+rtl_check_failed_bounds (const_rtx r, int n, const char *file, int line,
const char *func)
{
internal_error
}
void
-rtl_check_failed_type1 (rtx r, int n, int c1, const char *file, int line,
+rtl_check_failed_type1 (const_rtx r, int n, int c1, const char *file, int line,
const char *func)
{
internal_error
}
void
-rtl_check_failed_type2 (rtx r, int n, int c1, int c2, const char *file,
+rtl_check_failed_type2 (const_rtx r, int n, int c1, int c2, const char *file,
int line, const char *func)
{
internal_error
}
void
-rtl_check_failed_code1 (rtx r, enum rtx_code code, const char *file,
+rtl_check_failed_code1 (const_rtx r, enum rtx_code code, const char *file,
int line, const char *func)
{
internal_error ("RTL check: expected code '%s', have '%s' in %s, at %s:%d",
}
void
-rtl_check_failed_code2 (rtx r, enum rtx_code code1, enum rtx_code code2,
+rtl_check_failed_code2 (const_rtx r, enum rtx_code code1, enum rtx_code code2,
const char *file, int line, const char *func)
{
internal_error
func, trim_filename (file), line);
}
+void
+rtl_check_failed_code_mode (const_rtx r, enum rtx_code code, enum machine_mode mode,
+ bool not_mode, const char *file, int line,
+ const char *func)
+{
+ internal_error ((not_mode
+ ? ("RTL check: expected code '%s' and not mode '%s', "
+ "have code '%s' and mode '%s' in %s, at %s:%d")
+ : ("RTL check: expected code '%s' and mode '%s', "
+ "have code '%s' and mode '%s' in %s, at %s:%d")),
+ GET_RTX_NAME (code), GET_MODE_NAME (mode),
+ GET_RTX_NAME (GET_CODE (r)), GET_MODE_NAME (GET_MODE (r)),
+ func, trim_filename (file), line);
+}
+
+/* Report that line LINE of FILE tried to access the block symbol fields
+ of a non-block symbol. FUNC is the function that contains the line. */
+
+void
+rtl_check_failed_block_symbol (const char *file, int line, const char *func)
+{
+ internal_error
+ ("RTL check: attempt to treat non-block symbol as a block symbol "
+ "in %s, at %s:%d", func, trim_filename (file), line);
+}
+
/* XXX Maybe print the vector? */
void
-rtvec_check_failed_bounds (rtvec r, int n, const char *file, int line,
+rtvec_check_failed_bounds (const_rtvec r, int n, const char *file, int line,
const char *func)
{
internal_error
#if defined ENABLE_RTL_FLAG_CHECKING
void
-rtl_check_failed_flag (const char *name, rtx r, const char *file,
+rtl_check_failed_flag (const char *name, const_rtx r, const char *file,
int line, const char *func)
{
internal_error
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