libjava/java/awt/AWTException.java


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/* AWTException.java -- Generic AWT exception
   Copyright (C) 1999 Free Software Foundation, Inc.

This file is part of GNU Classpath.

GNU Classpath 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 Classpath 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 Classpath; see the file COPYING.  If not, write to the
Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA.

Linking this library statically or dynamically with other modules is
making a combined work based on this library.  Thus, the terms and
conditions of the GNU General Public License cover the whole
combination.

As a special exception, the copyright holders of this library give you
permission to link this library with independent modules to produce an
executable, regardless of the license terms of these independent
modules, and to copy and distribute the resulting executable under
terms of your choice, provided that you also meet, for each linked
independent module, the terms and conditions of the license of that
module.  An independent module is a module which is not derived from
or based on this library.  If you modify this library, you may extend
this exception to your version of the library, but you are not
obligated to do so.  If you do not wish to do so, delete this
exception statement from your version. */


package java.awt;

/**
  * This is a generic exception that indicates an error occurred in the
  * AWT system.
  *
  * @author Aaron M. Renn (arenn@urbanophile.com)
  */
public class AWTException extends Exception
{

/**
  * Initializes a new instance of <code>AWTException</code> with the
  * specified detailed error message.
  *
  * @param message The detailed error message.
  */
public
AWTException(String message)
{
  super(message);
}

} // class AWTException
/* Register Transfer Language (RTL) definitions for GCC
   Copyright (C) 1987, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
   1999, 2000, 2001, 2002, 2003, 2004, 2005 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
version.

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 GCC; see the file COPYING.  If not, write to the Free
Software Foundation, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA.  */

#ifndef GCC_RTL_H
#define GCC_RTL_H

#include "statistics.h"
#include "machmode.h"
#include "input.h"

#undef FFS  /* Some systems predefine this symbol; don't let it interfere.  */
#undef FLOAT /* Likewise.  */
#undef ABS /* Likewise.  */
#undef PC /* Likewise.  */

/* Value used by some passes to "recognize" noop moves as valid
 instructions.  */
#define NOOP_MOVE_INSN_CODE	INT_MAX

/* Register Transfer Language EXPRESSIONS CODES */

#define RTX_CODE	enum rtx_code
enum rtx_code  {

#define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS)   ENUM ,
#include "rtl.def"		/* rtl expressions are documented here */
#undef DEF_RTL_EXPR

  LAST_AND_UNUSED_RTX_CODE};	/* A convenient way to get a value for
				   NUM_RTX_CODE.
				   Assumes default enum value assignment.  */

#define NUM_RTX_CODE ((int) LAST_AND_UNUSED_RTX_CODE)
				/* The cast here, saves many elsewhere.  */

/* Register Transfer Language EXPRESSIONS CODE CLASSES */

enum rtx_class  {
  /* We check bit 0-1 of some rtx class codes in the predicates below.  */

  /* Bit 0 = comparison if 0, arithmetic is 1
     Bit 1 = 1 if commutative.  */
  RTX_COMPARE,		/* 0 */
  RTX_COMM_COMPARE,
  RTX_BIN_ARITH,
  RTX_COMM_ARITH,

  /* Must follow the four preceding values.  */
  RTX_UNARY,		/* 4 */

  RTX_EXTRA,
  RTX_MATCH,
  RTX_INSN,

  /* Bit 0 = 1 if constant.  */
  RTX_OBJ,		/* 8 */
  RTX_CONST_OBJ,

  RTX_TERNARY,
  RTX_BITFIELD_OPS,
  RTX_AUTOINC
};

#define RTX_OBJ_MASK (~1)
#define RTX_OBJ_RESULT (RTX_OBJ & RTX_OBJ_MASK)
#define RTX_COMPARE_MASK (~1)
#define RTX_COMPARE_RESULT (RTX_COMPARE & RTX_COMPARE_MASK)
#define RTX_ARITHMETIC_MASK (~1)
#define RTX_ARITHMETIC_RESULT (RTX_COMM_ARITH & RTX_ARITHMETIC_MASK)
#define RTX_BINARY_MASK (~3)
#define RTX_BINARY_RESULT (RTX_COMPARE & RTX_BINARY_MASK)
#define RTX_COMMUTATIVE_MASK (~2)
#define RTX_COMMUTATIVE_RESULT (RTX_COMM_COMPARE & RTX_COMMUTATIVE_MASK)
#define RTX_NON_COMMUTATIVE_RESULT (RTX_COMPARE & RTX_COMMUTATIVE_MASK)
#define RTX_EXPR_FIRST (RTX_COMPARE)
#define RTX_EXPR_LAST (RTX_UNARY)

extern const unsigned char rtx_length[NUM_RTX_CODE];
#define GET_RTX_LENGTH(CODE)		(rtx_length[(int) (CODE)])

extern const char * const rtx_name[NUM_RTX_CODE];
#define GET_RTX_NAME(CODE)		(rtx_name[(int) (CODE)])

extern const char * const rtx_format[NUM_RTX_CODE];
#define GET_RTX_FORMAT(CODE)		(rtx_format[(int) (CODE)])

extern const enum rtx_class rtx_class[NUM_RTX_CODE];
#define GET_RTX_CLASS(CODE)		(rtx_class[(int) (CODE)])

extern const unsigned char rtx_size[NUM_RTX_CODE];
extern const unsigned char rtx_next[NUM_RTX_CODE];

/* The flags and bitfields of an ADDR_DIFF_VEC.  BASE is the base label
   relative to which the offsets are calculated, as explained in rtl.def.  */
typedef struct
{
  /* Set at the start of shorten_branches - ONLY WHEN OPTIMIZING - : */
  unsigned min_align: 8;
  /* Flags: */
  unsigned base_after_vec: 1; /* BASE is after the ADDR_DIFF_VEC.  */
  unsigned min_after_vec: 1;  /* minimum address target label is
				 after the ADDR_DIFF_VEC.  */
  unsigned max_after_vec: 1;  /* maximum address target label is
				 after the ADDR_DIFF_VEC.  */
  unsigned min_after_base: 1; /* minimum address target label is
				 after BASE.  */
  unsigned max_after_base: 1; /* maximum address target label is
				 after BASE.  */
  /* Set by the actual branch shortening process - ONLY WHEN OPTIMIZING - : */
  unsigned offset_unsigned: 1; /* offsets have to be treated as unsigned.  */
  unsigned : 2;
  unsigned scale : 8;
} addr_diff_vec_flags;

/* Structure used to describe the attributes of a MEM.  These are hashed
   so MEMs that the same attributes share a data structure.  This means
   they cannot be modified in place.  If any element is nonzero, it means
   the value of the corresponding attribute is unknown.  */
/* ALIGN and SIZE are the alignment and size of the MEM itself,
   while EXPR can describe a larger underlying object, which might have a
   stricter alignment; OFFSET is the offset of the MEM within that object.  */
typedef struct mem_attrs GTY(())
{
  HOST_WIDE_INT alias;		/* Memory alias set.  */
  tree expr;			/* expr corresponding to MEM.  */
  rtx offset;			/* Offset from start of DECL, as CONST_INT.  */
  rtx size;			/* Size in bytes, as a CONST_INT.  */
  unsigned int align;		/* Alignment of MEM in bits.  */
} mem_attrs;

/* Structure used to describe the attributes of a REG in similar way as
   mem_attrs does for MEM above.  */

typedef struct reg_attrs GTY(())
{
  tree decl;			/* decl corresponding to REG.  */
  HOST_WIDE_INT offset;		/* Offset from start of DECL.  */
} reg_attrs;

/* Common union for an element of an rtx.  */

union rtunion_def
{
  int rt_int;
  unsigned int rt_uint;
  const char *rt_str;
  rtx rt_rtx;
  rtvec rt_rtvec;
  enum machine_mode rt_type;
  addr_diff_vec_flags rt_addr_diff_vec_flags;
  struct cselib_val_struct *rt_cselib;
  struct bitmap_head_def *rt_bit;
  tree rt_tree;
  struct basic_block_def *rt_bb;
  mem_attrs *rt_mem;
  reg_attrs *rt_reg;
};
typedef union rtunion_def rtunion;

/* RTL expression ("rtx").  */

struct rtx_def GTY((chain_next ("RTX_NEXT (&%h)"),
		    chain_prev ("RTX_PREV (&%h)")))
{
  /* The kind of expression this is.  */
  ENUM_BITFIELD(rtx_code) code: 16;

  /* The kind of value the expression has.  */
  ENUM_BITFIELD(machine_mode) mode : 8;

  /* 1 in a MEM if we should keep the alias set for this mem unchanged
     when we access a component.
     1 in a CALL_INSN if it is a sibling call.
     1 in a SET that is for a return.
     In a CODE_LABEL, part of the two-bit alternate entry field.  */
  unsigned int jump : 1;
  /* In a CODE_LABEL, part of the two-bit alternate entry field.
     1 in a MEM if it cannot trap.  */
  unsigned int call : 1;
  /* 1 in a REG, MEM, or CONCAT if the value is set at most once, anywhere.
     1 in a SUBREG if it references an unsigned object whose mode has been
     from a promoted to a wider mode.
     1 in a SYMBOL_REF if it addresses something in the per-function
     constants pool.
     1 in a CALL_INSN, NOTE, or EXPR_LIST for a const or pure call.
     1 in a JUMP_INSN, CALL_INSN, or INSN of an annulling branch.  */
  unsigned int unchanging : 1;
  /* 1 in a MEM or ASM_OPERANDS expression if the memory reference is volatile.
     1 in an INSN, CALL_INSN, JUMP_INSN, CODE_LABEL, BARRIER, or NOTE
     if it has been deleted.
     1 in a REG expression if corresponds to a variable declared by the user,
     0 for an internally generated temporary.
     1 in a SUBREG with a negative value.
     1 in a LABEL_REF or in a REG_LABEL note for a non-local label.
     In a SYMBOL_REF, this flag is used for machine-specific purposes.  */
  unsigned int volatil : 1;
  /* 1 in a MEM referring to a field of an aggregate.
     0 if the MEM was a variable or the result of a * operator in C;
     1 if it was the result of a . or -> operator (on a struct) in C.
     1 in a REG if the register is used only in exit code a loop.
     1 in a SUBREG expression if was generated from a variable with a
     promoted mode.
     1 in a CODE_LABEL if the label is used for nonlocal gotos
     and must not be deleted even if its count is zero.
     1 in an INSN, JUMP_INSN or CALL_INSN if this insn must be scheduled
     together with the preceding insn.  Valid only within sched.
     1 in an INSN, JUMP_INSN, or CALL_INSN if insn is in a delay slot and
     from the target of a branch.  Valid from reorg until end of compilation;
     cleared before used.  */
  unsigned int in_struct : 1;
  /* At the end of RTL generation, 1 if this rtx is used.  This is used for
     copying shared structure.  See `unshare_all_rtl'.
     In a REG, this is not needed for that purpose, and used instead
     in `leaf_renumber_regs_insn'.
     1 in a SYMBOL_REF, means that emit_library_call
     has used it as the function.  */
  unsigned int used : 1;
  /* 1 in an INSN or a SET if this rtx is related to the call frame,
     either changing how we compute the frame address or saving and
     restoring registers in the prologue and epilogue.
     1 in a REG or MEM if it is a pointer.
     1 in a SYMBOL_REF if it addresses something in the per-function
     constant string pool.  */
  unsigned frame_related : 1;
  /* 1 in a REG or PARALLEL that is the current function's return value.
     1 in a MEM if it refers to a scalar.
     1 in a SYMBOL_REF for a weak symbol.  */
  unsigned return_val : 1;

  /* The first element of the operands of this rtx.
     The number of operands and their types are controlled
     by the `code' field, according to rtl.def.  */
  union u {
    rtunion fld[1];
    HOST_WIDE_INT hwint[1];
  } GTY ((special ("rtx_def"), desc ("GET_CODE (&%0)"))) u;
};

/* The size in bytes of an rtx header (code, mode and flags).  */
#define RTX_HDR_SIZE offsetof (struct rtx_def, u)

/* The size in bytes of an rtx with code CODE.  */
#define RTX_SIZE(CODE) rtx_size[CODE]

#define NULL_RTX (rtx) 0

/* The "next" and "previous" RTX, relative to this one.  */

#define RTX_NEXT(X) (rtx_next[GET_CODE (X)] == 0 ? NULL			\
		     : *(rtx *)(((char *)X) + rtx_next[GET_CODE (X)]))

/* FIXME: the "NEXT_INSN (PREV_INSN (X)) == X" condition shouldn't be needed.
 */
#define RTX_PREV(X) ((INSN_P (X)       			\
                      || NOTE_P (X)       		\
                      || BARRIER_P (X)        		\
                      || LABEL_P (X))    		\
                     && PREV_INSN (X) != NULL           \
                     && NEXT_INSN (PREV_INSN (X)) == X  \
                     ? PREV_INSN (X) : NULL)

/* Define macros to access the `code' field of the rtx.  */

#define GET_CODE(RTX)	    ((enum rtx_code) (RTX)->code)
#define PUT_CODE(RTX, CODE) ((RTX)->code = (CODE))

#define GET_MODE(RTX)	    ((enum machine_mode) (RTX)->mode)
#define PUT_MODE(RTX, MODE) ((RTX)->mode = (MODE))

/* RTL vector.  These appear inside RTX's when there is a need
   for a variable number of things.  The principle use is inside
   PARALLEL expressions.  */

struct rtvec_def GTY(()) {
  int num_elem;		/* number of elements */
  rtx GTY ((length ("%h.num_elem"))) elem[1];
};

#define NULL_RTVEC (rtvec) 0

#define GET_NUM_ELEM(RTVEC)		((RTVEC)->num_elem)
#define PUT_NUM_ELEM(RTVEC, NUM)	((RTVEC)->num_elem = (NUM))

/* Predicate yielding nonzero iff X is an rtx for a register.  */
#define REG_P(X) (GET_CODE (X) == REG)

/* Predicate yielding nonzero iff X is an rtx for a memory location.  */
#define MEM_P(X) (GET_CODE (X) == MEM)

/* Predicate yielding nonzero iff X is a label insn.  */
#define LABEL_P(X) (GET_CODE (X) == CODE_LABEL)

/* Predicate yielding nonzero iff X is a jump insn.  */
#define JUMP_P(X) (GET_CODE (X) == JUMP_INSN)

/* Predicate yielding nonzero iff X is a call insn.  */
#define CALL_P(X) (GET_CODE (X) == CALL_INSN)

/* Predicate yielding nonzero iff X is an insn that cannot jump.  */
#define NONJUMP_INSN_P(X) (GET_CODE (X) == INSN)

/* Predicate yielding nonzero iff X is a real insn.  */
#define INSN_P(X) \
  (NONJUMP_INSN_P (X) || JUMP_P (X) || CALL_P (X))

/* Predicate yielding nonzero iff X is a note insn.  */
#define NOTE_P(X) (GET_CODE (X) == NOTE)

/* Predicate yielding nonzero iff X is a barrier insn.  */
#define BARRIER_P(X) (GET_CODE (X) == BARRIER)

/* Predicate yielding nonzero iff X is a data for a jump table.  */
#define JUMP_TABLE_DATA_P(INSN) \
  (JUMP_P (INSN) && (GET_CODE (PATTERN (INSN)) == ADDR_VEC || \
		     GET_CODE (PATTERN (INSN)) == ADDR_DIFF_VEC))

/* 1 if X is a unary operator.  */

#define UNARY_P(X)   \
  (GET_RTX_CLASS (GET_CODE (X)) == RTX_UNARY)

/* 1 if X is a binary operator.  */

#define BINARY_P(X)   \
  ((GET_RTX_CLASS (GET_CODE (X)) & RTX_BINARY_MASK) == RTX_BINARY_RESULT)

/* 1 if X is an arithmetic operator.  */

#define ARITHMETIC_P(X)   \
  ((GET_RTX_CLASS (GET_CODE (X)) & RTX_ARITHMETIC_MASK)			\
    == RTX_ARITHMETIC_RESULT)

/* 1 if X is an arithmetic operator.  */

#define COMMUTATIVE_ARITH_P(X)   \
  (GET_RTX_CLASS (GET_CODE (X)) == RTX_COMM_ARITH)

/* 1 if X is a commutative arithmetic operator or a comparison operator.
   These two are sometimes selected together because it is possible to
   swap the two operands.  */

#define SWAPPABLE_OPERANDS_P(X)   \
  ((1 << GET_RTX_CLASS (GET_CODE (X)))					\
    & ((1 << RTX_COMM_ARITH) | (1 << RTX_COMM_COMPARE)			\
       | (1 << RTX_COMPARE)))

/* 1 if X is a non-commutative operator.  */

#define NON_COMMUTATIVE_P(X)   \
  ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK)		\
    == RTX_NON_COMMUTATIVE_RESULT)

/* 1 if X is a commutative operator on integers.  */

#define COMMUTATIVE_P(X)   \
  ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK)		\
    == RTX_COMMUTATIVE_RESULT)

/* 1 if X is a relational operator.  */

#define COMPARISON_P(X)   \
  ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMPARE_MASK) == RTX_COMPARE_RESULT)

/* 1 if X is a constant value that is an integer.  */

#define CONSTANT_P(X)   \
  (GET_RTX_CLASS (GET_CODE (X)) == RTX_CONST_OBJ)

/* 1 if X can be used to represent an object.  */
#define OBJECT_P(X)							\
  ((GET_RTX_CLASS (GET_CODE (X)) & RTX_OBJ_MASK) == RTX_OBJ_RESULT)

/* General accessor macros for accessing the fields of an rtx.  */

#if defined ENABLE_RTL_CHECKING && (GCC_VERSION >= 2007)
/* The bit with a star outside the statement expr and an & inside is
   so that N can be evaluated only once.  */
#define RTL_CHECK1(RTX, N, C1) __extension__				\
(*({ rtx const _rtx = (RTX); const int _n = (N);			\
     const enum rtx_code _code = GET_CODE (_rtx);			\
     if (_n < 0 || _n >= GET_RTX_LENGTH (_code))			\
       rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__,		\
				__FUNCTION__);				\
     if (GET_RTX_FORMAT(_code)[_n] != C1)				\
       rtl_check_failed_type1 (_rtx, _n, C1, __FILE__, __LINE__,	\
			       __FUNCTION__);				\
     &_rtx->u.fld[_n]; }))

#define RTL_CHECK2(RTX, N, C1, C2) __extension__			\
(*({ rtx const _rtx = (RTX); const int _n = (N);			\
     const enum rtx_code _code = GET_CODE (_rtx);			\
     if (_n < 0 || _n >= GET_RTX_LENGTH (_code))			\
       rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__,		\
				__FUNCTION__);				\
     if (GET_RTX_FORMAT(_code)[_n] != C1				\
	 && GET_RTX_FORMAT(_code)[_n] != C2)				\
       rtl_check_failed_type2 (_rtx, _n, C1, C2, __FILE__, __LINE__,	\
			       __FUNCTION__);				\
     &_rtx->u.fld[_n]; }))

#define RTL_CHECKC1(RTX, N, C) __extension__				\
(*({ rtx const _rtx = (RTX); const int _n = (N);			\
     if (GET_CODE (_rtx) != (C))					\
       rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__,		\
			       __FUNCTION__);				\
     &_rtx->u.fld[_n]; }))

#define RTL_CHECKC2(RTX, N, C1, C2) __extension__			\
(*({ rtx const _rtx = (RTX); const int _n = (N);			\
     const enum rtx_code _code = GET_CODE (_rtx);			\
     if (_code != (C1) && _code != (C2))				\
       rtl_check_failed_code2 (_rtx, (C1), (C2), __FILE__, __LINE__,	\
			       __FUNCTION__); \
     &_rtx->u.fld[_n]; }))

#define RTVEC_ELT(RTVEC, I) __extension__				\
(*({ rtvec const _rtvec = (RTVEC); const int _i = (I);			\
     if (_i < 0 || _i >= GET_NUM_ELEM (_rtvec))				\
       rtvec_check_failed_bounds (_rtvec, _i, __FILE__, __LINE__,	\
				  __FUNCTION__);			\
     &_rtvec->elem[_i]; }))

#define XWINT(RTX, N) __extension__					\
(*({ rtx const _rtx = (RTX); const int _n = (N);			\
     const enum rtx_code _code = GET_CODE (_rtx);			\
     if (_n < 0 || _n >= GET_RTX_LENGTH (_code))			\
       rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__,		\
				__FUNCTION__);				\
     if (GET_RTX_FORMAT(_code)[_n] != 'w')				\
       rtl_check_failed_type1 (_rtx, _n, 'w', __FILE__, __LINE__,	\
			       __FUNCTION__);				\
     &_rtx->u.hwint[_n]; }))

#define XCWINT(RTX, N, C) __extension__					\
(*({ rtx const _rtx = (RTX);						\
     if (GET_CODE (_rtx) != (C))					\
       rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__,		\
			       __FUNCTION__);				\
     &_rtx->u.hwint[N]; }))

extern void rtl_check_failed_bounds (rtx, int, const char *, int,
				     const char *)
    ATTRIBUTE_NORETURN;
extern void rtl_check_failed_type1 (rtx, int, int, const char *, int,
				    const char *)
    ATTRIBUTE_NORETURN;
extern void rtl_check_failed_type2 (rtx, int, int, int, const char *,
				    int, const char *)
    ATTRIBUTE_NORETURN;
extern void rtl_check_failed_code1 (rtx, enum rtx_code, const char *,
				    int, const char *)
    ATTRIBUTE_NORETURN;
extern void rtl_check_failed_code2 (rtx, enum rtx_code, enum rtx_code,
				    const char *, int, const char *)
    ATTRIBUTE_NORETURN;
extern void rtvec_check_failed_bounds (rtvec, int, const char *, int,
				       const char *)
    ATTRIBUTE_NORETURN;

#else   /* not ENABLE_RTL_CHECKING */

#define RTL_CHECK1(RTX, N, C1)      ((RTX)->u.fld[N])
#define RTL_CHECK2(RTX, N, C1, C2)  ((RTX)->u.fld[N])
#define RTL_CHECKC1(RTX, N, C)	    ((RTX)->u.fld[N])
#define RTL_CHECKC2(RTX, N, C1, C2) ((RTX)->u.fld[N])
#define RTVEC_ELT(RTVEC, I)	    ((RTVEC)->elem[I])
#define XWINT(RTX, N)		    ((RTX)->u.hwint[N])
#define XCWINT(RTX, N, C)	    ((RTX)->u.hwint[N])

#endif

/* General accessor macros for accessing the flags of an rtx.  */

/* Access an individual rtx flag, with no checking of any kind.  */
#define RTX_FLAG(RTX, FLAG)	((RTX)->FLAG)

#if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION >= 2007)
#define RTL_FLAG_CHECK1(NAME, RTX, C1) __extension__			\
({ rtx const _rtx = (RTX);						\
   if (GET_CODE(_rtx) != C1)						\
     rtl_check_failed_flag  (NAME, _rtx, __FILE__, __LINE__,		\
			     __FUNCTION__);				\
   _rtx; })

#define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) __extension__		\
({ rtx const _rtx = (RTX);						\
   if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2)			\
     rtl_check_failed_flag  (NAME,_rtx, __FILE__, __LINE__,		\
			      __FUNCTION__);				\
   _rtx; })

#define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) __extension__		\
({ rtx const _rtx = (RTX);						\
   if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2			\
       && GET_CODE(_rtx) != C3)						\
     rtl_check_failed_flag  (NAME, _rtx, __FILE__, __LINE__,		\
			     __FUNCTION__);				\
   _rtx; })

#define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) __extension__	\
({ rtx const _rtx = (RTX);						\
   if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2			\
       && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4)			\
     rtl_check_failed_flag  (NAME, _rtx, __FILE__, __LINE__,		\
			      __FUNCTION__);				\
   _rtx; })

#define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) __extension__	\
({ rtx const _rtx = (RTX);						\
   if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2			\
       && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4			\
       && GET_CODE(_rtx) != C5)						\
     rtl_check_failed_flag  (NAME, _rtx, __FILE__, __LINE__,		\
			     __FUNCTION__);				\
   _rtx; })

#define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6)		\
  __extension__								\
({ rtx const _rtx = (RTX);						\
   if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2			\
       && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4			\
       && GET_CODE(_rtx) != C5 && GET_CODE(_rtx) != C6)			\
     rtl_check_failed_flag  (NAME,_rtx, __FILE__, __LINE__,		\
			     __FUNCTION__);				\
   _rtx; })

#define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7)		\
  __extension__								\
({ rtx const _rtx = (RTX);						\
   if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2			\
       && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4			\
       && GET_CODE(_rtx) != C5 && GET_CODE(_rtx) != C6			\
       && GET_CODE(_rtx) != C7)						\
     rtl_check_failed_flag  (NAME, _rtx, __FILE__, __LINE__,		\
			     __FUNCTION__);				\
   _rtx; })

#define RTL_FLAG_CHECK8(NAME, RTX, C1, C2, C3, C4, C5, C6, C7, C8)	\
  __extension__								\
({ rtx const _rtx = (RTX);						\
   if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2			\
       && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4			\
       && GET_CODE(_rtx) != C5 && GET_CODE(_rtx) != C6			\
       && GET_CODE(_rtx) != C7 && GET_CODE(_rtx) != C8)			\
     rtl_check_failed_flag  (NAME, _rtx, __FILE__, __LINE__,		\
			     __FUNCTION__);				\
   _rtx; })

extern void rtl_check_failed_flag (const char *, rtx, const char *,
				   int, const char *)
    ATTRIBUTE_NORETURN
    ;

#else	/* not ENABLE_RTL_FLAG_CHECKING */

#define RTL_FLAG_CHECK1(NAME, RTX, C1)					(RTX)
#define RTL_FLAG_CHECK2(NAME, RTX, C1, C2)				(RTX)
#define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3)				(RTX)
#define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4)			(RTX)
#define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5)		(RTX)
#define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6)		(RTX)
#define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7)		(RTX)
#define RTL_FLAG_CHECK8(NAME, RTX, C1, C2, C3, C4, C5, C6, C7, C8)	(RTX)
#endif

#define CLEAR_RTX_FLAGS(RTX)	\
do {				\
  rtx const _rtx = (RTX);	\
  _rtx->jump = 0;		\
  _rtx->call = 0;		\
  _rtx->unchanging = 0;		\
  _rtx->volatil = 0;		\
  _rtx->in_struct = 0;		\
  _rtx->used = 0;		\
  _rtx->frame_related = 0;	\
  _rtx->return_val = 0;		\
} while (0)

#define XINT(RTX, N)	(RTL_CHECK2 (RTX, N, 'i', 'n').rt_int)
#define XSTR(RTX, N)	(RTL_CHECK2 (RTX, N, 's', 'S').rt_str)
#define XEXP(RTX, N)	(RTL_CHECK2 (RTX, N, 'e', 'u').rt_rtx)
#define XVEC(RTX, N)	(RTL_CHECK2 (RTX, N, 'E', 'V').rt_rtvec)
#define XMODE(RTX, N)	(RTL_CHECK1 (RTX, N, 'M').rt_type)
#define XBITMAP(RTX, N) (RTL_CHECK1 (RTX, N, 'b').rt_bit)
#define XTREE(RTX, N)   (RTL_CHECK1 (RTX, N, 't').rt_tree)
#define XBBDEF(RTX, N)	(RTL_CHECK1 (RTX, N, 'B').rt_bb)
#define XTMPL(RTX, N)	(RTL_CHECK1 (RTX, N, 'T').rt_str)

#define XVECEXP(RTX, N, M)	RTVEC_ELT (XVEC (RTX, N), M)
#define XVECLEN(RTX, N)		GET_NUM_ELEM (XVEC (RTX, N))

/* These are like XINT, etc. except that they expect a '0' field instead
   of the normal type code.  */

#define X0INT(RTX, N)	   (RTL_CHECK1 (RTX, N, '0').rt_int)
#define X0UINT(RTX, N)	   (RTL_CHECK1 (RTX, N, '0').rt_uint)
#define X0STR(RTX, N)	   (RTL_CHECK1 (RTX, N, '0').rt_str)
#define X0EXP(RTX, N)	   (RTL_CHECK1 (RTX, N, '0').rt_rtx)
#define X0VEC(RTX, N)	   (RTL_CHECK1 (RTX, N, '0').rt_rtvec)
#define X0MODE(RTX, N)	   (RTL_CHECK1 (RTX, N, '0').rt_type)
#define X0BITMAP(RTX, N)   (RTL_CHECK1 (RTX, N, '0').rt_bit)
#define X0TREE(RTX, N)	   (RTL_CHECK1 (RTX, N, '0').rt_tree)
#define X0BBDEF(RTX, N)	   (RTL_CHECK1 (RTX, N, '0').rt_bb)
#define X0ADVFLAGS(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_addr_diff_vec_flags)
#define X0CSELIB(RTX, N)   (RTL_CHECK1 (RTX, N, '0').rt_cselib)
#define X0MEMATTR(RTX, N)  (RTL_CHECKC1 (RTX, N, MEM).rt_mem)
#define X0REGATTR(RTX, N)  (RTL_CHECKC1 (RTX, N, REG).rt_reg)

/* Access a '0' field with any type.  */
#define X0ANY(RTX, N)	   RTL_CHECK1 (RTX, N, '0')

#define XCINT(RTX, N, C)      (RTL_CHECKC1 (RTX, N, C).rt_int)
#define XCUINT(RTX, N, C)     (RTL_CHECKC1 (RTX, N, C).rt_uint)
#define XCSTR(RTX, N, C)      (RTL_CHECKC1 (RTX, N, C).rt_str)
#define XCEXP(RTX, N, C)      (RTL_CHECKC1 (RTX, N, C).rt_rtx)
#define XCVEC(RTX, N, C)      (RTL_CHECKC1 (RTX, N, C).rt_rtvec)
#define XCMODE(RTX, N, C)     (RTL_CHECKC1 (RTX, N, C).rt_type)
#define XCBITMAP(RTX, N, C)   (RTL_CHECKC1 (RTX, N, C).rt_bit)
#define XCTREE(RTX, N, C)     (RTL_CHECKC1 (RTX, N, C).rt_tree)
#define XCBBDEF(RTX, N, C)    (RTL_CHECKC1 (RTX, N, C).rt_bb)
#define XCCSELIB(RTX, N, C)   (RTL_CHECKC1 (RTX, N, C).rt_cselib)

#define XCVECEXP(RTX, N, M, C)	RTVEC_ELT (XCVEC (RTX, N, C), M)
#define XCVECLEN(RTX, N, C)	GET_NUM_ELEM (XCVEC (RTX, N, C))

#define XC2EXP(RTX, N, C1, C2)      (RTL_CHECKC2 (RTX, N, C1, C2).rt_rtx)

/* ACCESS MACROS for particular fields of insns.  */

/* Holds a unique number for each insn.
   These are not necessarily sequentially increasing.  */
#define INSN_UID(INSN)  XINT (INSN, 0)

/* Chain insns together in sequence.  */
#define PREV_INSN(INSN)	XEXP (INSN, 1)
#define NEXT_INSN(INSN)	XEXP (INSN, 2)

#define BLOCK_FOR_INSN(INSN) XBBDEF (INSN, 3)
#define INSN_LOCATOR(INSN) XINT (INSN, 4)
/* The body of an insn.  */
#define PATTERN(INSN)	XEXP (INSN, 5)

/* Code number of instruction, from when it was recognized.
   -1 means this instruction has not been recognized yet.  */
#define INSN_CODE(INSN) XINT (INSN, 6)

/* Set up in flow.c; empty before then.
   Holds a chain of INSN_LIST rtx's whose first operands point at
   previous insns with direct data-flow connections to this one.
   That means that those insns set variables whose next use is in this insn.
   They are always in the same basic block as this insn.  */
#define LOG_LINKS(INSN)	XEXP(INSN, 7)

#define RTX_FRAME_RELATED_P(RTX)					\
  (RTL_FLAG_CHECK5("RTX_FRAME_RELATED_P", (RTX), INSN, CALL_INSN,	\
		   JUMP_INSN, BARRIER, SET)->frame_related)

/* 1 if RTX is an insn that has been deleted.  */
#define INSN_DELETED_P(RTX)						\
  (RTL_FLAG_CHECK6("INSN_DELETED_P", (RTX), INSN, CALL_INSN, JUMP_INSN,	\
		   CODE_LABEL, BARRIER, NOTE)->volatil)

/* 1 if RTX is a call to a const or pure function.  */
#define CONST_OR_PURE_CALL_P(RTX)					\
  (RTL_FLAG_CHECK3("CONST_OR_PURE_CALL_P", (RTX), CALL_INSN, NOTE,	\
		   EXPR_LIST)->unchanging)

/* 1 if RTX is a call_insn for a sibling call.  */
#define SIBLING_CALL_P(RTX)						\
  (RTL_FLAG_CHECK1("SIBLING_CALL_P", (RTX), CALL_INSN)->jump)

/* 1 if RTX is a jump_insn, call_insn, or insn that is an annulling branch.  */
#define INSN_ANNULLED_BRANCH_P(RTX)					\
  (RTL_FLAG_CHECK3("INSN_ANNULLED_BRANCH_P", (RTX), JUMP_INSN, CALL_INSN, INSN)->unchanging)

/* 1 if RTX is an insn in a delay slot and is from the target of the branch.
   If the branch insn has INSN_ANNULLED_BRANCH_P set, this insn should only be
   executed if the branch is taken.  For annulled branches with this bit
   clear, the insn should be executed only if the branch is not taken.  */
#define INSN_FROM_TARGET_P(RTX)						\
  (RTL_FLAG_CHECK3("INSN_FROM_TARGET_P", (RTX), INSN, JUMP_INSN, CALL_INSN)->in_struct)

/* In an ADDR_DIFF_VEC, the flags for RTX for use by branch shortening.
   See the comments for ADDR_DIFF_VEC in rtl.def.  */
#define ADDR_DIFF_VEC_FLAGS(RTX) X0ADVFLAGS(RTX, 4)

/* In a VALUE, the value cselib has assigned to RTX.
   This is a "struct cselib_val_struct", see cselib.h.  */
#define CSELIB_VAL_PTR(RTX) X0CSELIB(RTX, 0)

/* Holds a list of notes on what this insn does to various REGs.
   It is a chain of EXPR_LIST rtx's, where the second operand is the
   chain pointer and the first operand is the REG being described.
   The mode field of the EXPR_LIST contains not a real machine mode
   but a value from enum reg_note.  */
#define REG_NOTES(INSN)	XEXP(INSN, 8)

enum reg_note
{
#define DEF_REG_NOTE(NAME) NAME,
#include "reg-notes.def"
#undef DEF_REG_NOTE
  REG_NOTE_MAX
};

/* The base value for branch probability notes.  */
#define REG_BR_PROB_BASE  10000

/* Define macros to extract and insert the reg-note kind in an EXPR_LIST.  */
#define REG_NOTE_KIND(LINK) ((enum reg_note) GET_MODE (LINK))
#define PUT_REG_NOTE_KIND(LINK, KIND) \
  PUT_MODE (LINK, (enum machine_mode) (KIND))

/* Names for REG_NOTE's in EXPR_LIST insn's.  */

extern const char * const reg_note_name[];
#define GET_REG_NOTE_NAME(MODE) (reg_note_name[(int) (MODE)])

/* This field is only present on CALL_INSNs.  It holds a chain of EXPR_LIST of
   USE and CLOBBER expressions.
     USE expressions list the registers filled with arguments that
   are passed to the function.
     CLOBBER expressions document the registers explicitly clobbered
   by this CALL_INSN.
     Pseudo registers can not be mentioned in this list.  */
#define CALL_INSN_FUNCTION_USAGE(INSN)	XEXP(INSN, 9)

/* The label-number of a code-label.  The assembler label
   is made from `L' and the label-number printed in decimal.
   Label numbers are unique in a compilation.  */
#define CODE_LABEL_NUMBER(INSN)	XINT (INSN, 6)

/* In a NOTE that is a line number, this is a string for the file name that the
   line is in.  We use the same field to record block numbers temporarily in
   NOTE_INSN_BLOCK_BEG and NOTE_INSN_BLOCK_END notes.  (We avoid lots of casts
   between ints and pointers if we use a different macro for the block number.)
   */

/* Opaque data.  */
#define NOTE_DATA(INSN)	        RTL_CHECKC1 (INSN, 4, NOTE)
#define NOTE_DELETED_LABEL_NAME(INSN) XCSTR (INSN, 4, NOTE)
#ifdef USE_MAPPED_LOCATION
#define NOTE_SOURCE_LOCATION(INSN) XCUINT (INSN, 5, NOTE)
#define NOTE_EXPANDED_LOCATION(XLOC, INSN)	\
  (XLOC) = expand_location (NOTE_SOURCE_LOCATION (INSN))
#define SET_INSN_DELETED(INSN) \
  (PUT_CODE (INSN, NOTE), NOTE_LINE_NUMBER (INSN) = NOTE_INSN_DELETED)
#else
#define NOTE_EXPANDED_LOCATION(XLOC, INSN)	\
  ((XLOC).file = NOTE_SOURCE_FILE (INSN),	\
   (XLOC).line = NOTE_LINE_NUMBER (INSN))
#define NOTE_SOURCE_FILE(INSN)	XCSTR (INSN, 4, NOTE)
#define SET_INSN_DELETED(INSN) \
  (PUT_CODE (INSN, NOTE),  NOTE_SOURCE_FILE (INSN) = 0, \
   NOTE_LINE_NUMBER (INSN) = NOTE_INSN_DELETED)
#endif
#define NOTE_BLOCK(INSN)	XCTREE (INSN, 4, NOTE)
#define NOTE_EH_HANDLER(INSN)	XCINT (INSN, 4, NOTE)
#define NOTE_BASIC_BLOCK(INSN)	XCBBDEF (INSN, 4, NOTE)
#define NOTE_EXPECTED_VALUE(INSN) XCEXP (INSN, 4, NOTE)
#define NOTE_PREDICTION(INSN)   XCINT (INSN, 4, NOTE)
#define NOTE_VAR_LOCATION(INSN)	XCEXP (INSN, 4, NOTE)

/* In a NOTE that is a line number, this is the line number.
   Other kinds of NOTEs are identified by negative numbers here.  */
#define NOTE_LINE_NUMBER(INSN) XCINT (INSN, 5, NOTE)

/* Nonzero if INSN is a note marking the beginning of a basic block.  */
#define NOTE_INSN_BASIC_BLOCK_P(INSN)			\
  (GET_CODE (INSN) == NOTE				\
   && NOTE_LINE_NUMBER (INSN) == NOTE_INSN_BASIC_BLOCK)

/* Algorithm and flags for prediction.  */
#define NOTE_PREDICTION_ALG(INSN)   (XCINT(INSN, 4, NOTE)>>8)
#define NOTE_PREDICTION_FLAGS(INSN) (XCINT(INSN, 4, NOTE)&0xff)
#define NOTE_PREDICT(ALG,FLAGS)     ((ALG<<8)+(FLAGS))

/* Variable declaration and the location of a variable.  */
#define NOTE_VAR_LOCATION_DECL(INSN)	(XCTREE (XCEXP (INSN, 4, NOTE), \
						 0, VAR_LOCATION))
#define NOTE_VAR_LOCATION_LOC(INSN)	(XCEXP (XCEXP (INSN, 4, NOTE),  \
						1, VAR_LOCATION))

/* Codes that appear in the NOTE_LINE_NUMBER field for kinds of notes
   that are not line numbers.  These codes are all negative.
   
   Notice that we do not try to use zero here for any of
   the special note codes because sometimes the source line
   actually can be zero!  This happens (for example) when we
   are generating code for the per-translation-unit constructor
   and destructor routines for some C++ translation unit.  */

enum insn_note
{
  /* Keep all of these numbers negative.  Adjust as needed.  */
  NOTE_INSN_BIAS = -100,

#define DEF_INSN_NOTE(NAME) NAME,
#include "insn-notes.def"
#undef DEF_INSN_NOTE

  NOTE_INSN_MAX
};

/* Names for NOTE insn's other than line numbers.  */

extern const char * const note_insn_name[NOTE_INSN_MAX - NOTE_INSN_BIAS];
#define GET_NOTE_INSN_NAME(NOTE_CODE) \
  (note_insn_name[(NOTE_CODE) - (int) NOTE_INSN_BIAS])

/* The name of a label, in case it corresponds to an explicit label
   in the input source code.  */
#define LABEL_NAME(RTX) XCSTR (RTX, 7, CODE_LABEL)

/* In jump.c, each label contains a count of the number
   of LABEL_REFs that point at it, so unused labels can be deleted.  */
#define LABEL_NUSES(RTX) XCINT (RTX, 4, CODE_LABEL)

/* Labels carry a two-bit field composed of the ->jump and ->call
   bits.  This field indicates whether the label is an alternate
   entry point, and if so, what kind.  */
enum label_kind
{
  LABEL_NORMAL = 0,	/* ordinary label */
  LABEL_STATIC_ENTRY,	/* alternate entry point, not exported */
  LABEL_GLOBAL_ENTRY,	/* alternate entry point, exported */
  LABEL_WEAK_ENTRY	/* alternate entry point, exported as weak symbol */
};

#if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION > 2007)

/* Retrieve the kind of LABEL.  */
#define LABEL_KIND(LABEL) __extension__					\
({ rtx const _label = (LABEL);						\
   if (GET_CODE (_label) != CODE_LABEL)					\
     rtl_check_failed_flag ("LABEL_KIND", _label, __FILE__, __LINE__,	\
			    __FUNCTION__);				\
   (enum label_kind) ((_label->jump << 1) | _label->call); })

/* Set the kind of LABEL.  */
#define SET_LABEL_KIND(LABEL, KIND) do {				\
   rtx _label = (LABEL);						\
   unsigned int _kind = (KIND);						\
   if (GET_CODE (_label) != CODE_LABEL)					\
     rtl_check_failed_flag ("SET_LABEL_KIND", _label, __FILE__, __LINE__, \
			    __FUNCTION__);				\
   _label->jump = ((_kind >> 1) & 1);					\
   _label->call = (_kind & 1);						\
} while (0)

#else

/* Retrieve the kind of LABEL.  */
#define LABEL_KIND(LABEL) \
   ((enum label_kind) (((LABEL)->jump << 1) | (LABEL)->call))

/* Set the kind of LABEL.  */
#define SET_LABEL_KIND(LABEL, KIND) do {				\
   rtx _label = (LABEL);						\
   unsigned int _kind = (KIND);						\
   _label->jump = ((_kind >> 1) & 1);					\
   _label->call = (_kind & 1);						\
} while (0)

#endif /* rtl flag checking */

#define LABEL_ALT_ENTRY_P(LABEL) (LABEL_KIND (LABEL) != LABEL_NORMAL)

/* In jump.c, each JUMP_INSN can point to a label that it can jump to,
   so that if the JUMP_INSN is deleted, the label's LABEL_NUSES can
   be decremented and possibly the label can be deleted.  */
#define JUMP_LABEL(INSN)   XCEXP (INSN, 9, JUMP_INSN)

/* Once basic blocks are found in flow.c,
   each CODE_LABEL starts a chain that goes through
   all the LABEL_REFs that jump to that label.
   The chain eventually winds up at the CODE_LABEL: it is circular.  */
#define LABEL_REFS(LABEL) XCEXP (LABEL, 5, CODE_LABEL)

/* This is the field in the LABEL_REF through which the circular chain
   of references to a particular label is linked.
   FIXME: This chain is used in loop.c and in the SH backend.
	  Since loop.c is about to go away, it could be a win to replace
	  the uses of this in the SH backend with something else.  */
#define LABEL_NEXTREF(REF) XCEXP (REF, 1, LABEL_REF)

/* For a REG rtx, REGNO extracts the register number.  ORIGINAL_REGNO holds
   the number the register originally had; for a pseudo register turned into
   a hard reg this will hold the old pseudo register number.  */

#define REGNO(RTX) XCUINT (RTX, 0, REG)
#define ORIGINAL_REGNO(RTX) X0UINT (RTX, 1)

/* 1 if RTX is a reg or parallel that is the current function's return
   value.  */
#define REG_FUNCTION_VALUE_P(RTX)					\
  (RTL_FLAG_CHECK2("REG_FUNCTION_VALUE_P", (RTX), REG, PARALLEL)->return_val)

/* 1 if RTX is a reg that corresponds to a variable declared by the user.  */
#define REG_USERVAR_P(RTX)						\
  (RTL_FLAG_CHECK1("REG_USERVAR_P", (RTX), REG)->volatil)

/* 1 if RTX is a reg that holds a pointer value.  */
#define REG_POINTER(RTX)						\
  (RTL_FLAG_CHECK1("REG_POINTER", (RTX), REG)->frame_related)

/* 1 if RTX is a mem that holds a pointer value.  */
#define MEM_POINTER(RTX)						\
  (RTL_FLAG_CHECK1("MEM_POINTER", (RTX), MEM)->frame_related)

/* 1 if the given register REG corresponds to a hard register.  */
#define HARD_REGISTER_P(REG) (HARD_REGISTER_NUM_P (REGNO (REG)))

/* 1 if the given register number REG_NO corresponds to a hard register.  */
#define HARD_REGISTER_NUM_P(REG_NO) ((REG_NO) < FIRST_PSEUDO_REGISTER)

/* For a CONST_INT rtx, INTVAL extracts the integer.  */
#define INTVAL(RTX) XCWINT(RTX, 0, CONST_INT)

/* For a CONST_DOUBLE:
   For a DImode, there are two integers CONST_DOUBLE_LOW is the
     low-order word and ..._HIGH the high-order.
   For a float, there is a REAL_VALUE_TYPE structure, and
     CONST_DOUBLE_REAL_VALUE(r) is a pointer to it.  */
#define CONST_DOUBLE_LOW(r) XCWINT (r, 0, CONST_DOUBLE)
#define CONST_DOUBLE_HIGH(r) XCWINT (r, 1, CONST_DOUBLE)
#define CONST_DOUBLE_REAL_VALUE(r) ((struct real_value *)&CONST_DOUBLE_LOW(r))

/* For a CONST_VECTOR, return element #n.  */
#define CONST_VECTOR_ELT(RTX, N) XCVECEXP (RTX, 0, N, CONST_VECTOR)

/* For a CONST_VECTOR, return the number of elements in a vector.  */
#define CONST_VECTOR_NUNITS(RTX) XCVECLEN (RTX, 0, CONST_VECTOR)

/* For a SUBREG rtx, SUBREG_REG extracts the value we want a subreg of.
   SUBREG_BYTE extracts the byte-number.  */

#define SUBREG_REG(RTX) XCEXP (RTX, 0, SUBREG)
#define SUBREG_BYTE(RTX) XCUINT (RTX, 1, SUBREG)

/* in rtlanal.c */
/* Return the right cost to give to an operation
   to make the cost of the corresponding register-to-register instruction
   N times that of a fast register-to-register instruction.  */
#define COSTS_N_INSNS(N) ((N) * 4)

/* Maximum cost of an rtl expression.  This value has the special meaning
   not to use an rtx with this cost under any circumstances.  */
#define MAX_COST INT_MAX

extern void init_rtlanal (void);
extern int rtx_cost (rtx, enum rtx_code);
extern int address_cost (rtx, enum machine_mode);
extern unsigned int subreg_lsb (rtx);
extern unsigned int subreg_lsb_1 (enum machine_mode, enum machine_mode,
				  unsigned int);
extern unsigned int subreg_regno_offset	(unsigned int, enum machine_mode,
					 unsigned int, enum machine_mode);
extern bool subreg_offset_representable_p (unsigned int, enum machine_mode,
					   unsigned int, enum machine_mode);
extern unsigned int subreg_regno (rtx);
extern unsigned HOST_WIDE_INT nonzero_bits (rtx, enum machine_mode);
extern unsigned int num_sign_bit_copies (rtx, enum machine_mode);


/* 1 if RTX is a subreg containing a reg that is already known to be
   sign- or zero-extended from the mode of the subreg to the mode of
   the reg.  SUBREG_PROMOTED_UNSIGNED_P gives the signedness of the
   extension.

   When used as a LHS, is means that this extension must be done
   when assigning to SUBREG_REG.  */

#define SUBREG_PROMOTED_VAR_P(RTX)					\
  (RTL_FLAG_CHECK1("SUBREG_PROMOTED", (RTX), SUBREG)->in_struct)

#define SUBREG_PROMOTED_UNSIGNED_SET(RTX, VAL)				\
do {									\
  rtx const _rtx = RTL_FLAG_CHECK1("SUBREG_PROMOTED_UNSIGNED_SET", (RTX), SUBREG); \
  if ((VAL) < 0)							\
    _rtx->volatil = 1;							\
  else {								\
    _rtx->volatil = 0;							\
    _rtx->unchanging = (VAL);						\
  }									\
} while (0)
#define SUBREG_PROMOTED_UNSIGNED_P(RTX)	\
  ((RTL_FLAG_CHECK1("SUBREG_PROMOTED_UNSIGNED_P", (RTX), SUBREG)->volatil) \
     ? -1 : (RTX)->unchanging)

/* Access various components of an ASM_OPERANDS rtx.  */

#define ASM_OPERANDS_TEMPLATE(RTX) XCSTR (RTX, 0, ASM_OPERANDS)
#define ASM_OPERANDS_OUTPUT_CONSTRAINT(RTX) XCSTR (RTX, 1, ASM_OPERANDS)
#define ASM_OPERANDS_OUTPUT_IDX(RTX) XCINT (RTX, 2, ASM_OPERANDS)
#define ASM_OPERANDS_INPUT_VEC(RTX) XCVEC (RTX, 3, ASM_OPERANDS)
#define ASM_OPERANDS_INPUT_CONSTRAINT_VEC(RTX) XCVEC (RTX, 4, ASM_OPERANDS)
#define ASM_OPERANDS_INPUT(RTX, N) XCVECEXP (RTX, 3, N, ASM_OPERANDS)
#define ASM_OPERANDS_INPUT_LENGTH(RTX) XCVECLEN (RTX, 3, ASM_OPERANDS)
#define ASM_OPERANDS_INPUT_CONSTRAINT_EXP(RTX, N) \
  XCVECEXP (RTX, 4, N, ASM_OPERANDS)
#define ASM_OPERANDS_INPUT_CONSTRAINT(RTX, N) \
  XSTR (XCVECEXP (RTX, 4, N, ASM_OPERANDS), 0)
#define ASM_OPERANDS_INPUT_MODE(RTX, N)  \
  GET_MODE (XCVECEXP (RTX, 4, N, ASM_OPERANDS))
#ifdef USE_MAPPED_LOCATION
#define ASM_OPERANDS_SOURCE_LOCATION(RTX) XCUINT (RTX, 5, ASM_OPERANDS)
#else
#define ASM_OPERANDS_SOURCE_FILE(RTX) XCSTR (RTX, 5, ASM_OPERANDS)
#define ASM_OPERANDS_SOURCE_LINE(RTX) XCINT (RTX, 6, ASM_OPERANDS)
#endif

/* 1 if RTX is a mem that is statically allocated in read-only memory.  */
#define MEM_READONLY_P(RTX) \
  (RTL_FLAG_CHECK1("MEM_READONLY_P", (RTX), MEM)->unchanging)

/* 1 if RTX is a mem and we should keep the alias set for this mem
   unchanged when we access a component.  Set to 1, or example, when we
   are already in a non-addressable component of an aggregate.  */
#define MEM_KEEP_ALIAS_SET_P(RTX)					\
  (RTL_FLAG_CHECK1("MEM_KEEP_ALIAS_SET_P", (RTX), MEM)->jump)

/* 1 if RTX is a mem or asm_operand for a volatile reference.  */
#define MEM_VOLATILE_P(RTX)						\
  (RTL_FLAG_CHECK3("MEM_VOLATILE_P", (RTX), MEM, ASM_OPERANDS,		\
		   ASM_INPUT)->volatil)

/* 1 if RTX is a mem that refers to an aggregate, either to the
   aggregate itself of to a field of the aggregate.  If zero, RTX may
   or may not be such a reference.  */
#define MEM_IN_STRUCT_P(RTX)						\
  (RTL_FLAG_CHECK1("MEM_IN_STRUCT_P", (RTX), MEM)->in_struct)

/* 1 if RTX is a MEM that refers to a scalar.  If zero, RTX may or may
   not refer to a scalar.  */
#define MEM_SCALAR_P(RTX)						\
  (RTL_FLAG_CHECK1("MEM_SCALAR_P", (RTX), MEM)->return_val)

/* 1 if RTX is a mem that cannot trap.  */
#define MEM_NOTRAP_P(RTX) \
  (RTL_FLAG_CHECK1("MEM_NOTRAP_P", (RTX), MEM)->call)

/* If VAL is nonzero, set MEM_IN_STRUCT_P and clear MEM_SCALAR_P in
   RTX.  Otherwise, vice versa.  Use this macro only when you are
   *sure* that you know that the MEM is in a structure, or is a
   scalar.  VAL is evaluated only once.  */
#define MEM_SET_IN_STRUCT_P(RTX, VAL)		\
do {						\
  if (VAL)					\
    {						\
      MEM_IN_STRUCT_P (RTX) = 1;		\
      MEM_SCALAR_P (RTX) = 0;			\
    }						\
  else						\
    {						\
      MEM_IN_STRUCT_P (RTX) = 0;		\
      MEM_SCALAR_P (RTX) = 1;			\
    }						\
} while (0)

/* The memory attribute block.  We provide access macros for each value
   in the block and provide defaults if none specified.  */
#define MEM_ATTRS(RTX) X0MEMATTR (RTX, 1)

/* The register attribute block.  We provide access macros for each value
   in the block and provide defaults if none specified.  */
#define REG_ATTRS(RTX) X0REGATTR (RTX, 2)

/* For a MEM rtx, the alias set.  If 0, this MEM is not in any alias
   set, and may alias anything.  Otherwise, the MEM can only alias
   MEMs in a conflicting alias set.  This value is set in a
   language-dependent manner in the front-end, and should not be
   altered in the back-end.  These set numbers are tested with
   alias_sets_conflict_p.  */
#define MEM_ALIAS_SET(RTX) (MEM_ATTRS (RTX) == 0 ? 0 : MEM_ATTRS (RTX)->alias)

/* For a MEM rtx, the decl it is known to refer to, if it is known to
   refer to part of a DECL.  It may also be a COMPONENT_REF.  */
#define MEM_EXPR(RTX) (MEM_ATTRS (RTX) == 0 ? 0 : MEM_ATTRS (RTX)->expr)

/* For a MEM rtx, the offset from the start of MEM_EXPR, if known, as a
   RTX that is always a CONST_INT.  */
#define MEM_OFFSET(RTX) (MEM_ATTRS (RTX) == 0 ? 0 : MEM_ATTRS (RTX)->offset)

/* For a MEM rtx, the size in bytes of the MEM, if known, as an RTX that
   is always a CONST_INT.  */
#define MEM_SIZE(RTX)							\
(MEM_ATTRS (RTX) != 0 ? MEM_ATTRS (RTX)->size				\
 : GET_MODE (RTX) != BLKmode ? GEN_INT (GET_MODE_SIZE (GET_MODE (RTX)))	\
 : 0)

/* For a MEM rtx, the alignment in bits.  We can use the alignment of the
   mode as a default when STRICT_ALIGNMENT, but not if not.  */
#define MEM_ALIGN(RTX)							\
(MEM_ATTRS (RTX) != 0 ? MEM_ATTRS (RTX)->align				\
 : (STRICT_ALIGNMENT && GET_MODE (RTX) != BLKmode			\
    ? GET_MODE_ALIGNMENT (GET_MODE (RTX)) : BITS_PER_UNIT))

/* For a REG rtx, the decl it is known to refer to, if it is known to
   refer to part of a DECL.  */
#define REG_EXPR(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->decl)

/* For a MEM rtx, the offset from the start of MEM_DECL, if known, as a
   RTX that is always a CONST_INT.  */
#define REG_OFFSET(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->offset)

/* Copy the attributes that apply to memory locations from RHS to LHS.  */
#define MEM_COPY_ATTRIBUTES(LHS, RHS)				\
  (MEM_VOLATILE_P (LHS) = MEM_VOLATILE_P (RHS),			\
   MEM_IN_STRUCT_P (LHS) = MEM_IN_STRUCT_P (RHS),		\
   MEM_SCALAR_P (LHS) = MEM_SCALAR_P (RHS),			\
   MEM_NOTRAP_P (LHS) = MEM_NOTRAP_P (RHS),			\
   MEM_READONLY_P (LHS) = MEM_READONLY_P (RHS),			\
   MEM_KEEP_ALIAS_SET_P (LHS) = MEM_KEEP_ALIAS_SET_P (RHS),	\
   MEM_ATTRS (LHS) = MEM_ATTRS (RHS))

/* 1 if RTX is a label_ref to a label outside the loop containing the
   reference.  */
#define LABEL_OUTSIDE_LOOP_P(RTX)					\
  (RTL_FLAG_CHECK1("LABEL_OUTSIDE_LOOP_P", (RTX), LABEL_REF)->in_struct)

/* 1 if RTX is a label_ref for a nonlocal label.  */
/* Likewise in an expr_list for a reg_label note.  */
#define LABEL_REF_NONLOCAL_P(RTX)					\
  (RTL_FLAG_CHECK2("LABEL_REF_NONLOCAL_P", (RTX), LABEL_REF,		\
		   REG_LABEL)->volatil)

/* 1 if RTX is a code_label that should always be considered to be needed.  */
#define LABEL_PRESERVE_P(RTX)						\
  (RTL_FLAG_CHECK2("LABEL_PRESERVE_P", (RTX), CODE_LABEL, NOTE)->in_struct)

/* During sched, 1 if RTX is an insn that must be scheduled together
   with the preceding insn.  */
#define SCHED_GROUP_P(RTX)						\
  (RTL_FLAG_CHECK3("SCHED_GROUP_P", (RTX), INSN, JUMP_INSN, CALL_INSN	\
		          )->in_struct)

/* For a SET rtx, SET_DEST is the place that is set
   and SET_SRC is the value it is set to.  */
#define SET_DEST(RTX) XC2EXP(RTX, 0, SET, CLOBBER)
#define SET_SRC(RTX) XCEXP(RTX, 1, SET)
#define SET_IS_RETURN_P(RTX)						\
  (RTL_FLAG_CHECK1("SET_IS_RETURN_P", (RTX), SET)->jump)

/* For a TRAP_IF rtx, TRAP_CONDITION is an expression.  */
#define TRAP_CONDITION(RTX) XCEXP (RTX, 0, TRAP_IF)
#define TRAP_CODE(RTX) XCEXP (RTX, 1, TRAP_IF)

/* For a COND_EXEC rtx, COND_EXEC_TEST is the condition to base
   conditionally executing the code on, COND_EXEC_CODE is the code
   to execute if the condition is true.  */
#define COND_EXEC_TEST(RTX) XCEXP (RTX, 0, COND_EXEC)
#define COND_EXEC_CODE(RTX) XCEXP (RTX, 1, COND_EXEC)

/* 1 if RTX is a symbol_ref that addresses this function's rtl
   constants pool.  */
#define CONSTANT_POOL_ADDRESS_P(RTX)					\
  (RTL_FLAG_CHECK1("CONSTANT_POOL_ADDRESS_P", (RTX), SYMBOL_REF)->unchanging)

/* 1 if RTX is a symbol_ref that addresses a value in the file's
   tree constant pool.  This information is private to varasm.c.  */
#define TREE_CONSTANT_POOL_ADDRESS_P(RTX)				\
  (RTL_FLAG_CHECK1("TREE_CONSTANT_POOL_ADDRESS_P",			\
		   (RTX), SYMBOL_REF)->frame_related)

/* Used if RTX is a symbol_ref, for machine-specific purposes.  */
#define SYMBOL_REF_FLAG(RTX)						\
  (RTL_FLAG_CHECK1("SYMBOL_REF_FLAG", (RTX), SYMBOL_REF)->volatil)

/* 1 if RTX is a symbol_ref that has been the library function in
   emit_library_call.  */
#define SYMBOL_REF_USED(RTX)						\