Daily bump.

[pf3gnuchains/gcc-fork.git] / gcc / expr.h

diff --git a/gcc/expr.h b/gcc/expr.h
index beb8ea3..0096367 100644 (file)
--- a/gcc/expr.h
+++ b/gcc/expr.h
@@ -1,13 +1,13 @@
 /* Definitions for code generation pass of GNU compiler.
    Copyright (C) 1987, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
 /* Definitions for code generation pass of GNU compiler.
    Copyright (C) 1987, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,

-   1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
+   1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010

    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
    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
 version.
 
 GCC is distributed in the hope that it will be useful, but WITHOUT ANY


@@ -16,9 +16,8 @@ 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
 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, 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301, USA.  */
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */

 
 #ifndef GCC_EXPR_H
 #define GCC_EXPR_H
 
 #ifndef GCC_EXPR_H
 #define GCC_EXPR_H


@@ -35,11 +34,6 @@ Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
 /* For GET_MODE_BITSIZE, word_mode */
 #include "machmode.h"
 
 /* For GET_MODE_BITSIZE, word_mode */
 #include "machmode.h"
 

-/* The default branch cost is 1.  */
-#ifndef BRANCH_COST
-#define BRANCH_COST 1
-#endif
-

 /* This is the 4th arg to `expand_expr'.
    EXPAND_STACK_PARM means we are possibly expanding a call param onto
    the stack.
 /* This is the 4th arg to `expand_expr'.
    EXPAND_STACK_PARM means we are possibly expanding a call param onto
    the stack.


@@ -62,30 +56,6 @@ enum expand_modifier {EXPAND_NORMAL = 0, EXPAND_STACK_PARM, EXPAND_SUM,
    more information.  */
 #define OK_DEFER_POP (inhibit_defer_pop -= 1)
 \f
    more information.  */
 #define OK_DEFER_POP (inhibit_defer_pop -= 1)
 \f

-/* If a memory-to-memory move would take MOVE_RATIO or more simple
-   move-instruction sequences, we will do a movmem or libcall instead.  */
-
-#ifndef MOVE_RATIO
-#if defined (HAVE_movmemqi) || defined (HAVE_movmemhi) || defined (HAVE_movmemsi) || defined (HAVE_movmemdi) || defined (HAVE_movmemti)
-#define MOVE_RATIO 2
-#else
-/* If we are optimizing for space (-Os), cut down the default move ratio.  */
-#define MOVE_RATIO (optimize_size ? 3 : 15)
-#endif
-#endif
-
-/* If a clear memory operation would take CLEAR_RATIO or more simple
-   move-instruction sequences, we will do a setmem or libcall instead.  */
-
-#ifndef CLEAR_RATIO
-#if defined (HAVE_setmemqi) || defined (HAVE_setmemhi) || defined (HAVE_setmemsi) || defined (HAVE_setmemdi) || defined (HAVE_setmemti)
-#define CLEAR_RATIO 2
-#else
-/* If we are optimizing for space, cut down the default clear ratio.  */
-#define CLEAR_RATIO (optimize_size ? 3 : 15)
-#endif
-#endif
-\f

 enum direction {none, upward, downward};
 
 /* Structure to record the size of a sequence of arguments
 enum direction {none, upward, downward};
 
 /* Structure to record the size of a sequence of arguments


@@ -160,85 +130,17 @@ do {                                                              \
 ((SIZE).var == 0 ? GEN_INT ((SIZE).constant)                   \
  : expand_normal (ARGS_SIZE_TREE (SIZE)))
 
 ((SIZE).var == 0 ? GEN_INT ((SIZE).constant)                   \
  : expand_normal (ARGS_SIZE_TREE (SIZE)))
 

-/* Supply a default definition for FUNCTION_ARG_PADDING:
-   usually pad upward, but pad short args downward on
-   big-endian machines.  */
-
-#define DEFAULT_FUNCTION_ARG_PADDING(MODE, TYPE)                       \
-  (! BYTES_BIG_ENDIAN                                                  \
-   ? upward                                                            \
-   : (((MODE) == BLKmode                                               \
-       ? ((TYPE) && TREE_CODE (TYPE_SIZE (TYPE)) == INTEGER_CST                \
-         && int_size_in_bytes (TYPE) < (PARM_BOUNDARY / BITS_PER_UNIT)) \
-       : GET_MODE_BITSIZE (MODE) < PARM_BOUNDARY)                      \
-      ? downward : upward))
-
-#ifndef FUNCTION_ARG_PADDING
-#define FUNCTION_ARG_PADDING(MODE, TYPE)       \
-  DEFAULT_FUNCTION_ARG_PADDING ((MODE), (TYPE))
-#endif
-
-/* Supply a default definition for FUNCTION_ARG_BOUNDARY.  Normally, we let
-   FUNCTION_ARG_PADDING, which also pads the length, handle any needed
-   alignment.  */
-
-#ifndef FUNCTION_ARG_BOUNDARY
-#define FUNCTION_ARG_BOUNDARY(MODE, TYPE)      PARM_BOUNDARY
-#endif
-
-/* Supply a default definition of STACK_SAVEAREA_MODE for emit_stack_save.
-   Normally move_insn, so Pmode stack pointer.  */
-
-#ifndef STACK_SAVEAREA_MODE
-#define STACK_SAVEAREA_MODE(LEVEL) Pmode
-#endif
-
-/* Supply a default definition of STACK_SIZE_MODE for
-   allocate_dynamic_stack_space.  Normally PLUS/MINUS, so word_mode.  */
-
-#ifndef STACK_SIZE_MODE
-#define STACK_SIZE_MODE word_mode
-#endif
-
-/* Provide default values for the macros controlling stack checking.  */
-
-#ifndef STACK_CHECK_BUILTIN
-#define STACK_CHECK_BUILTIN 0
-#endif
-
-/* The default interval is one page.  */
-#ifndef STACK_CHECK_PROBE_INTERVAL
-#define STACK_CHECK_PROBE_INTERVAL 4096
-#endif
-
-/* The default is to do a store into the stack.  */
-#ifndef STACK_CHECK_PROBE_LOAD
-#define STACK_CHECK_PROBE_LOAD 0
-#endif
-
-/* This value is arbitrary, but should be sufficient for most machines.  */
-#ifndef STACK_CHECK_PROTECT
-#define STACK_CHECK_PROTECT (75 * UNITS_PER_WORD)
-#endif
-
-/* Make the maximum frame size be the largest we can and still only need
-   one probe per function.  */
-#ifndef STACK_CHECK_MAX_FRAME_SIZE
-#define STACK_CHECK_MAX_FRAME_SIZE \
-  (STACK_CHECK_PROBE_INTERVAL - UNITS_PER_WORD)
-#endif
-
-/* This is arbitrary, but should be large enough everywhere.  */
-#ifndef STACK_CHECK_FIXED_FRAME_SIZE
-#define STACK_CHECK_FIXED_FRAME_SIZE (4 * UNITS_PER_WORD)
-#endif
-
-/* Provide a reasonable default for the maximum size of an object to
-   allocate in the fixed frame.  We may need to be able to make this
-   controllable by the user at some point.  */
-#ifndef STACK_CHECK_MAX_VAR_SIZE
-#define STACK_CHECK_MAX_VAR_SIZE (STACK_CHECK_MAX_FRAME_SIZE / 100)
-#endif
+\f
+/* This structure is used to pass around information about exploded
+   unary, binary and trinary expressions between expand_expr_real_1 and
+   friends.  */
+typedef struct separate_ops
+{
+  enum tree_code code;
+  location_t location;
+  tree type;
+  tree op0, op1, op2;
+} *sepops;

 \f
 /* Functions from optabs.c, commonly used, and without need for the optabs
    tables:  */
 \f
 /* Functions from optabs.c, commonly used, and without need for the optabs
    tables:  */


@@ -310,11 +212,20 @@ int can_conditionally_move_p (enum machine_mode mode);
 rtx emit_conditional_add (rtx, enum rtx_code, rtx, rtx, enum machine_mode,
                          rtx, rtx, enum machine_mode, int);
 
 rtx emit_conditional_add (rtx, enum rtx_code, rtx, rtx, enum machine_mode,
                          rtx, rtx, enum machine_mode, int);
 

-rtx expand_val_compare_and_swap (rtx, rtx, rtx, rtx);
-rtx expand_bool_compare_and_swap (rtx, rtx, rtx, rtx);

 rtx expand_sync_operation (rtx, rtx, enum rtx_code);
 rtx expand_sync_fetch_operation (rtx, rtx, enum rtx_code, bool, rtx);
 rtx expand_sync_lock_test_and_set (rtx, rtx, rtx);
 rtx expand_sync_operation (rtx, rtx, enum rtx_code);
 rtx expand_sync_fetch_operation (rtx, rtx, enum rtx_code, bool, rtx);
 rtx expand_sync_lock_test_and_set (rtx, rtx, rtx);

+
+rtx expand_atomic_exchange (rtx, rtx, rtx, enum memmodel);
+rtx expand_atomic_load (rtx, rtx, enum memmodel);
+rtx expand_atomic_store (rtx, rtx, enum memmodel, bool);
+rtx expand_atomic_fetch_op (rtx, rtx, rtx, enum rtx_code, enum memmodel, 
+                             bool);
+rtx expand_atomic_test_and_set (rtx, rtx, enum memmodel);
+rtx expand_atomic_clear (rtx, enum memmodel);
+void expand_atomic_thread_fence (enum memmodel);
+void expand_atomic_signal_fence (enum memmodel);
+

 \f
 /* Functions from expmed.c:  */
 
 \f
 /* Functions from expmed.c:  */
 


@@ -336,18 +247,22 @@ extern rtx emit_store_flag_force (rtx, enum rtx_code, rtx, rtx,
 /* Functions from builtins.c:  */
 extern rtx expand_builtin (tree, rtx, rtx, enum machine_mode, int);
 extern tree std_build_builtin_va_list (void);
 /* Functions from builtins.c:  */
 extern rtx expand_builtin (tree, rtx, rtx, enum machine_mode, int);
 extern tree std_build_builtin_va_list (void);

+extern tree std_fn_abi_va_list (tree);
+extern tree std_canonical_va_list_type (tree);
+

 extern void std_expand_builtin_va_start (tree, rtx);
 extern rtx default_expand_builtin (tree, rtx, rtx, enum machine_mode, int);
 extern void expand_builtin_setjmp_setup (rtx, rtx);
 extern void expand_builtin_setjmp_receiver (rtx);
 extern rtx expand_builtin_saveregs (void);
 extern void expand_builtin_trap (void);
 extern void std_expand_builtin_va_start (tree, rtx);
 extern rtx default_expand_builtin (tree, rtx, rtx, enum machine_mode, int);
 extern void expand_builtin_setjmp_setup (rtx, rtx);
 extern void expand_builtin_setjmp_receiver (rtx);
 extern rtx expand_builtin_saveregs (void);
 extern void expand_builtin_trap (void);

+extern rtx builtin_strncpy_read_str (void *, HOST_WIDE_INT, enum machine_mode);

 \f
 /* Functions from expr.c:  */
 
 \f
 /* Functions from expr.c:  */
 

-/* This is run once per compilation to set up which modes can be used
-   directly in memory and to initialize the block move optab.  */
-extern void init_expr_once (void);
+/* This is run during target initialization to set up which modes can be
+   used directly in memory and to initialize the block move optab.  */
+extern void init_expr_target (void);

 
 /* This is run at the start of compiling a function.  */
 extern void init_expr (void);
 
 /* This is run at the start of compiling a function.  */
 extern void init_expr (void);


@@ -373,11 +288,15 @@ enum block_op_methods
   BLOCK_OP_TAILCALL
 };
 
   BLOCK_OP_TAILCALL
 };
 

+extern GTY(()) tree block_clear_fn;

 extern void init_block_move_fn (const char *);
 extern void init_block_clear_fn (const char *);
 
 extern rtx emit_block_move (rtx, rtx, rtx, enum block_op_methods);
 extern rtx emit_block_move_via_libcall (rtx, rtx, rtx, bool);
 extern void init_block_move_fn (const char *);
 extern void init_block_clear_fn (const char *);
 
 extern rtx emit_block_move (rtx, rtx, rtx, enum block_op_methods);
 extern rtx emit_block_move_via_libcall (rtx, rtx, rtx, bool);

+extern rtx emit_block_move_hints (rtx, rtx, rtx, enum block_op_methods,
+                                 unsigned int, HOST_WIDE_INT);
+extern bool emit_storent_insn (rtx to, rtx from);

 
 /* Copy all or part of a value X into registers starting at REGNO.
    The number of registers to be filled is NREGS.  */
 
 /* Copy all or part of a value X into registers starting at REGNO.
    The number of registers to be filled is NREGS.  */


@@ -411,8 +330,18 @@ extern void emit_group_store (rtx, rtx, tree, int);
 /* Copy BLKmode object from a set of registers.  */
 extern rtx copy_blkmode_from_reg (rtx, rtx, tree);
 
 /* Copy BLKmode object from a set of registers.  */
 extern rtx copy_blkmode_from_reg (rtx, rtx, tree);
 

+/* Mark REG as holding a parameter for the next CALL_INSN.
+   Mode is TYPE_MODE of the non-promoted parameter, or VOIDmode.  */
+extern void use_reg_mode (rtx *, rtx, enum machine_mode);
+
+extern rtx copy_blkmode_to_reg (enum machine_mode, tree);
+

 /* Mark REG as holding a parameter for the next CALL_INSN.  */
 /* Mark REG as holding a parameter for the next CALL_INSN.  */

-extern void use_reg (rtx *, rtx);
+static inline void
+use_reg (rtx *fusage, rtx reg)
+{
+  use_reg_mode (fusage, reg, VOIDmode);
+}

 
 /* Mark NREGS consecutive regs, starting at REGNO, as holding parameters
    for the next CALL_INSN.  */
 
 /* Mark NREGS consecutive regs, starting at REGNO, as holding parameters
    for the next CALL_INSN.  */


@@ -424,35 +353,45 @@ extern void use_group_regs (rtx *, rtx);
 /* Write zeros through the storage of OBJECT.
    If OBJECT has BLKmode, SIZE is its length in bytes.  */
 extern rtx clear_storage (rtx, rtx, enum block_op_methods);
 /* Write zeros through the storage of OBJECT.
    If OBJECT has BLKmode, SIZE is its length in bytes.  */
 extern rtx clear_storage (rtx, rtx, enum block_op_methods);

+extern rtx clear_storage_hints (rtx, rtx, enum block_op_methods,
+                               unsigned int, HOST_WIDE_INT);

 /* The same, but always output an library call.  */
 rtx set_storage_via_libcall (rtx, rtx, rtx, bool);
 
 /* Expand a setmem pattern; return true if successful.  */
 /* The same, but always output an library call.  */
 rtx set_storage_via_libcall (rtx, rtx, rtx, bool);
 
 /* Expand a setmem pattern; return true if successful.  */

-extern bool set_storage_via_setmem (rtx, rtx, rtx, unsigned int);
+extern bool set_storage_via_setmem (rtx, rtx, rtx, unsigned int,
+                                   unsigned int, HOST_WIDE_INT);

 
 /* Determine whether the LEN bytes can be moved by using several move
    instructions.  Return nonzero if a call to move_by_pieces should
    succeed.  */
 extern int can_move_by_pieces (unsigned HOST_WIDE_INT, unsigned int);
 
 
 /* Determine whether the LEN bytes can be moved by using several move
    instructions.  Return nonzero if a call to move_by_pieces should
    succeed.  */
 extern int can_move_by_pieces (unsigned HOST_WIDE_INT, unsigned int);
 

+extern unsigned HOST_WIDE_INT move_by_pieces_ninsns (unsigned HOST_WIDE_INT,
+                                                    unsigned int,
+                                                    unsigned int);
+

 /* Return nonzero if it is desirable to store LEN bytes generated by
    CONSTFUN with several move instructions by store_by_pieces
    function.  CONSTFUNDATA is a pointer which will be passed as argument
    in every CONSTFUN call.
 /* Return nonzero if it is desirable to store LEN bytes generated by
    CONSTFUN with several move instructions by store_by_pieces
    function.  CONSTFUNDATA is a pointer which will be passed as argument
    in every CONSTFUN call.

-   ALIGN is maximum alignment we can assume.  */
+   ALIGN is maximum alignment we can assume.
+   MEMSETP is true if this is a real memset/bzero, not a copy
+   of a const string.  */

 extern int can_store_by_pieces (unsigned HOST_WIDE_INT,
                                rtx (*) (void *, HOST_WIDE_INT,
                                         enum machine_mode),
 extern int can_store_by_pieces (unsigned HOST_WIDE_INT,
                                rtx (*) (void *, HOST_WIDE_INT,
                                         enum machine_mode),

-                               void *, unsigned int);
+                               void *, unsigned int, bool);

 
 /* Generate several move instructions to store LEN bytes generated by
    CONSTFUN to block TO.  (A MEM rtx with BLKmode).  CONSTFUNDATA is a
    pointer which will be passed as argument in every CONSTFUN call.
    ALIGN is maximum alignment we can assume.
 
 /* Generate several move instructions to store LEN bytes generated by
    CONSTFUN to block TO.  (A MEM rtx with BLKmode).  CONSTFUNDATA is a
    pointer which will be passed as argument in every CONSTFUN call.
    ALIGN is maximum alignment we can assume.

+   MEMSETP is true if this is a real memset/bzero, not a copy.

    Returns TO + LEN.  */
 extern rtx store_by_pieces (rtx, unsigned HOST_WIDE_INT,
                            rtx (*) (void *, HOST_WIDE_INT, enum machine_mode),
    Returns TO + LEN.  */
 extern rtx store_by_pieces (rtx, unsigned HOST_WIDE_INT,
                            rtx (*) (void *, HOST_WIDE_INT, enum machine_mode),

-                           void *, unsigned int, int);
+                           void *, unsigned int, bool, int);

 
 /* Emit insns to set X from Y.  */
 extern rtx emit_move_insn (rtx, rtx);
 
 /* Emit insns to set X from Y.  */
 extern rtx emit_move_insn (rtx, rtx);


@@ -460,6 +399,9 @@ extern rtx emit_move_insn (rtx, rtx);
 /* Emit insns to set X from Y, with no frills.  */
 extern rtx emit_move_insn_1 (rtx, rtx);
 
 /* Emit insns to set X from Y, with no frills.  */
 extern rtx emit_move_insn_1 (rtx, rtx);
 

+extern rtx emit_move_complex_push (enum machine_mode, rtx, rtx);
+extern rtx emit_move_complex_parts (rtx, rtx);
+

 /* Push a block of length SIZE (perhaps variable)
    and return an rtx to address the beginning of the block.  */
 extern rtx push_block (rtx, int, int);
 /* Push a block of length SIZE (perhaps variable)
    and return an rtx to address the beginning of the block.  */
 extern rtx push_block (rtx, int, int);


@@ -469,22 +411,26 @@ extern void emit_push_insn (rtx, enum machine_mode, tree, rtx, unsigned int,
                            int, rtx, int, rtx, rtx, int, rtx);
 
 /* Expand an assignment that stores the value of FROM into TO.  */
                            int, rtx, int, rtx, rtx, int, rtx);
 
 /* Expand an assignment that stores the value of FROM into TO.  */

-extern void expand_assignment (tree, tree);
+extern void expand_assignment (tree, tree, bool);

 
 /* Generate code for computing expression EXP,
    and storing the value into TARGET.
    If SUGGEST_REG is nonzero, copy the value through a register
    and return that register, if that is possible.  */
 
 /* Generate code for computing expression EXP,
    and storing the value into TARGET.
    If SUGGEST_REG is nonzero, copy the value through a register
    and return that register, if that is possible.  */

-extern rtx store_expr (tree, rtx, int);
+extern rtx store_expr (tree, rtx, int, bool);

 
 /* Given an rtx that may include add and multiply operations,
    generate them as insns and return a pseudo-reg containing the value.
    Useful after calling expand_expr with 1 as sum_ok.  */
 extern rtx force_operand (rtx, rtx);
 
 
 /* Given an rtx that may include add and multiply operations,
    generate them as insns and return a pseudo-reg containing the value.
    Useful after calling expand_expr with 1 as sum_ok.  */
 extern rtx force_operand (rtx, rtx);
 

-/* Work horse for expand_expr.  */
-extern rtx expand_expr_real (tree, rtx, enum machine_mode, 
+/* Work horses for expand_expr.  */
+extern rtx expand_expr_real (tree, rtx, enum machine_mode,

                             enum expand_modifier, rtx *);
                             enum expand_modifier, rtx *);

+extern rtx expand_expr_real_1 (tree, rtx, enum machine_mode,
+                              enum expand_modifier, rtx *);
+extern rtx expand_expr_real_2 (sepops, rtx, enum machine_mode,
+                              enum expand_modifier);

 
 /* Generate code for computing expression EXP.
    An rtx for the computed value is returned.  The value is never null.
 
 /* Generate code for computing expression EXP.
    An rtx for the computed value is returned.  The value is never null.


@@ -502,8 +448,6 @@ expand_normal (tree exp)
   return expand_expr_real (exp, NULL_RTX, VOIDmode, EXPAND_NORMAL, NULL);
 }
 
   return expand_expr_real (exp, NULL_RTX, VOIDmode, EXPAND_NORMAL, NULL);
 }
 

-extern void expand_var (tree);
-

 /* At the start of a function, record that we have no previously-pushed
    arguments waiting to be popped.  */
 extern void init_pending_stack_adjust (void);
 /* At the start of a function, record that we have no previously-pushed
    arguments waiting to be popped.  */
 extern void init_pending_stack_adjust (void);


@@ -523,29 +467,25 @@ extern void do_pending_stack_adjust (void);
 extern tree string_constant (tree, tree *);
 
 /* Generate code to evaluate EXP and jump to LABEL if the value is zero.  */
 extern tree string_constant (tree, tree *);
 
 /* Generate code to evaluate EXP and jump to LABEL if the value is zero.  */

-extern void jumpifnot (tree, rtx);
+extern void jumpifnot (tree, rtx, int);
+extern void jumpifnot_1 (enum tree_code, tree, tree, rtx, int);

 
 /* Generate code to evaluate EXP and jump to LABEL if the value is nonzero.  */
 
 /* Generate code to evaluate EXP and jump to LABEL if the value is nonzero.  */

-extern void jumpif (tree, rtx);
+extern void jumpif (tree, rtx, int);
+extern void jumpif_1 (enum tree_code, tree, tree, rtx, int);

 
 /* Generate code to evaluate EXP and jump to IF_FALSE_LABEL if
    the result is zero, or IF_TRUE_LABEL if the result is one.  */
 
 /* Generate code to evaluate EXP and jump to IF_FALSE_LABEL if
    the result is zero, or IF_TRUE_LABEL if the result is one.  */

-extern void do_jump (tree, rtx, rtx);
+extern void do_jump (tree, rtx, rtx, int);
+extern void do_jump_1 (enum tree_code, tree, tree, rtx, rtx, int);

 
 

-/* Generate rtl to compare two rtx's, will call emit_cmp_insn.  */
-extern rtx compare_from_rtx (rtx, rtx, enum rtx_code, int, enum machine_mode,
-                            rtx);

 extern void do_compare_rtx_and_jump (rtx, rtx, enum rtx_code, int,
 extern void do_compare_rtx_and_jump (rtx, rtx, enum rtx_code, int,

-                                    enum machine_mode, rtx, rtx, rtx);
+                                    enum machine_mode, rtx, rtx, rtx, int);

 
 /* Two different ways of generating switch statements.  */
 
 /* Two different ways of generating switch statements.  */

-extern int try_casesi (tree, tree, tree, tree, rtx, rtx);
+extern int try_casesi (tree, tree, tree, tree, rtx, rtx, rtx);

 extern int try_tablejump (tree, tree, tree, tree, rtx, rtx);
 
 extern int try_tablejump (tree, tree, tree, tree, rtx, rtx);
 

-/* Smallest number of adjacent cases before we use a jump table.
-   XXX Should be a target hook.  */
-extern unsigned int case_values_threshold (void);
-

 /* Functions from alias.c */
 #include "alias.h"
 
 /* Functions from alias.c */
 #include "alias.h"
 


@@ -560,9 +500,9 @@ extern HOST_WIDE_INT int_expr_size (tree);
 
 /* Return an rtx that refers to the value returned by a function
    in its original home.  This becomes invalid if any more code is emitted.  */
 
 /* Return an rtx that refers to the value returned by a function
    in its original home.  This becomes invalid if any more code is emitted.  */

-extern rtx hard_function_value (tree, tree, tree, int);
+extern rtx hard_function_value (const_tree, const_tree, const_tree, int);

 
 

-extern rtx prepare_call_address (rtx, rtx, rtx *, int, int);
+extern rtx prepare_call_address (tree, rtx, rtx, rtx *, int, int);

 
 extern bool shift_return_value (enum machine_mode, bool, rtx);
 
 
 extern bool shift_return_value (enum machine_mode, bool, rtx);
 


@@ -571,8 +511,10 @@ extern rtx expand_call (tree, rtx, int);
 extern void fixup_tail_calls (void);
 
 #ifdef TREE_CODE
 extern void fixup_tail_calls (void);
 
 #ifdef TREE_CODE

-extern rtx expand_shift (enum tree_code, enum machine_mode, rtx, tree, rtx,
-                        int);
+extern rtx expand_variable_shift (enum tree_code, enum machine_mode,
+                                 rtx, tree, rtx, int);
+extern rtx expand_shift (enum tree_code, enum machine_mode, rtx, int, rtx,
+                            int);

 extern rtx expand_divmod (int, enum tree_code, enum machine_mode, rtx, rtx,
                          rtx, int);
 #endif
 extern rtx expand_divmod (int, enum tree_code, enum machine_mode, rtx, rtx,
                          rtx, int);
 #endif


@@ -589,20 +531,20 @@ extern rtx label_rtx (tree);
    if how is not obvious).  */
 extern rtx force_label_rtx (tree);
 
    if how is not obvious).  */
 extern rtx force_label_rtx (tree);
 

-/* Indicate how an input argument register was promoted.  */
-extern rtx promoted_input_arg (unsigned int, enum machine_mode *, int *);
-

 /* Return an rtx like arg but sans any constant terms.
    Returns the original rtx if it has no constant terms.
    The constant terms are added and stored via a second arg.  */
 extern rtx eliminate_constant_term (rtx, rtx *);
 
 /* Return an rtx like arg but sans any constant terms.
    Returns the original rtx if it has no constant terms.
    The constant terms are added and stored via a second arg.  */
 extern rtx eliminate_constant_term (rtx, rtx *);
 

-/* Convert arg to a valid memory address for specified machine mode,
-   by emitting insns to perform arithmetic if nec.  */
-extern rtx memory_address (enum machine_mode, rtx);
+/* Convert arg to a valid memory address for specified machine mode that points
+   to a specific named address space, by emitting insns to perform arithmetic
+   if necessary.  */
+extern rtx memory_address_addr_space (enum machine_mode, rtx, addr_space_t);

 
 

-/* Like `memory_address' but pretend `flag_force_addr' is 0.  */
-extern rtx memory_address_noforce (enum machine_mode, rtx);
+/* Like memory_address_addr_space, except assume the memory address points to
+   the generic named address space.  */
+#define memory_address(MODE,RTX) \
+       memory_address_addr_space ((MODE), (RTX), ADDR_SPACE_GENERIC)

 
 /* Return a memory reference like MEMREF, but with its mode changed
    to MODE and its address changed to ADDR.
 
 /* Return a memory reference like MEMREF, but with its mode changed
    to MODE and its address changed to ADDR.


@@ -661,6 +603,11 @@ extern void set_mem_attributes (rtx, tree, int);
    expecting that it'll be added back in later.  */
 extern void set_mem_attributes_minus_bitpos (rtx, tree, int, HOST_WIDE_INT);
 
    expecting that it'll be added back in later.  */
 extern void set_mem_attributes_minus_bitpos (rtx, tree, int, HOST_WIDE_INT);
 

+/* Return OFFSET if XEXP (MEM, 0) - OFFSET is known to be ALIGN
+   bits aligned for 0 <= OFFSET < ALIGN / BITS_PER_UNIT, or
+   -1 if not known.  */
+extern int get_mem_align_offset (rtx, unsigned int);
+

 /* Assemble the static constant template for function entry trampolines.  */
 extern rtx assemble_trampoline_template (void);
 
 /* Assemble the static constant template for function entry trampolines.  */
 extern rtx assemble_trampoline_template (void);
 


@@ -683,8 +630,17 @@ extern rtx force_reg (enum machine_mode, rtx);
 /* Return given rtx, copied into a new temp reg if it was in memory.  */
 extern rtx force_not_mem (rtx);
 
 /* Return given rtx, copied into a new temp reg if it was in memory.  */
 extern rtx force_not_mem (rtx);
 

+/* Return mode and signedness to use when an argument or result in the
+   given mode is promoted.  */
+extern enum machine_mode promote_function_mode (const_tree, enum machine_mode, int *,
+                                               const_tree, int);
+
+/* Return mode and signedness to use when an object in the given mode
+   is promoted.  */
+extern enum machine_mode promote_mode (const_tree, enum machine_mode, int *);
+

 /* Return mode and signedness to use when object is promoted.  */
 /* Return mode and signedness to use when object is promoted.  */

-extern enum machine_mode promote_mode (tree, enum machine_mode, int *, int);
+enum machine_mode promote_decl_mode (const_tree, int *);

 
 /* Remove some bytes from the stack.  An rtx says how many.  */
 extern void adjust_stack (rtx);
 
 /* Remove some bytes from the stack.  An rtx says how many.  */
 extern void adjust_stack (rtx);


@@ -692,32 +648,36 @@ extern void adjust_stack (rtx);
 /* Add some bytes to the stack.  An rtx says how many.  */
 extern void anti_adjust_stack (rtx);
 
 /* Add some bytes to the stack.  An rtx says how many.  */
 extern void anti_adjust_stack (rtx);
 

+/* Add some bytes to the stack while probing it.  An rtx says how many. */
+extern void anti_adjust_stack_and_probe (rtx, bool);
+

 /* This enum is used for the following two functions.  */
 enum save_level {SAVE_BLOCK, SAVE_FUNCTION, SAVE_NONLOCAL};
 
 /* Save the stack pointer at the specified level.  */
 /* This enum is used for the following two functions.  */
 enum save_level {SAVE_BLOCK, SAVE_FUNCTION, SAVE_NONLOCAL};
 
 /* Save the stack pointer at the specified level.  */

-extern void emit_stack_save (enum save_level, rtx *, rtx);
+extern void emit_stack_save (enum save_level, rtx *);

 
 /* Restore the stack pointer from a save area of the specified level.  */
 
 /* Restore the stack pointer from a save area of the specified level.  */

-extern void emit_stack_restore (enum save_level, rtx, rtx);
+extern void emit_stack_restore (enum save_level, rtx);

 
 /* Invoke emit_stack_save for the nonlocal_goto_save_area.  */
 extern void update_nonlocal_goto_save_area (void);
 
 
 /* Invoke emit_stack_save for the nonlocal_goto_save_area.  */
 extern void update_nonlocal_goto_save_area (void);
 

-/* Allocate some space on the stack dynamically and return its address.  An rtx
-   says how many bytes.  */
-extern rtx allocate_dynamic_stack_space (rtx, rtx, int);
+/* Allocate some space on the stack dynamically and return its address.  */
+extern rtx allocate_dynamic_stack_space (rtx, unsigned, unsigned, bool);
+
+/* Emit one stack probe at ADDRESS, an address within the stack.  */
+extern void emit_stack_probe (rtx);

 
 /* Probe a range of stack addresses from FIRST to FIRST+SIZE, inclusive.
 
 /* Probe a range of stack addresses from FIRST to FIRST+SIZE, inclusive.

-   FIRST is a constant and size is a Pmode RTX.  These are offsets from the
-   current stack pointer.  STACK_GROWS_DOWNWARD says whether to add or
-   subtract from the stack.  If SIZE is constant, this is done
-   with a fixed number of probes.  Otherwise, we must make a loop.  */
+   FIRST is a constant and size is a Pmode RTX.  These are offsets from
+   the current stack pointer.  STACK_GROWS_DOWNWARD says whether to add
+   or subtract them from the stack pointer.  */

 extern void probe_stack_range (HOST_WIDE_INT, rtx);
 
 /* Return an rtx that refers to the value returned by a library call
    in its original home.  This becomes invalid if any more code is emitted.  */
 extern void probe_stack_range (HOST_WIDE_INT, rtx);
 
 /* Return an rtx that refers to the value returned by a library call
    in its original home.  This becomes invalid if any more code is emitted.  */

-extern rtx hard_libcall_value (enum machine_mode);
+extern rtx hard_libcall_value (enum machine_mode, rtx);

 
 /* Return the mode desired by operand N of a particular bitfield
    insert/extract insn, or MAX_MACHINE_MODE if no such insn is
 
 /* Return the mode desired by operand N of a particular bitfield
    insert/extract insn, or MAX_MACHINE_MODE if no such insn is


@@ -727,16 +687,22 @@ enum extraction_pattern { EP_insv, EP_extv, EP_extzv };
 extern enum machine_mode
 mode_for_extraction (enum extraction_pattern, int);
 
 extern enum machine_mode
 mode_for_extraction (enum extraction_pattern, int);
 

-extern rtx store_bit_field (rtx, unsigned HOST_WIDE_INT,
-                           unsigned HOST_WIDE_INT, enum machine_mode, rtx);
+extern void store_bit_field (rtx, unsigned HOST_WIDE_INT,
+                            unsigned HOST_WIDE_INT,
+                            unsigned HOST_WIDE_INT,
+                            unsigned HOST_WIDE_INT,
+                            enum machine_mode, rtx);

 extern rtx extract_bit_field (rtx, unsigned HOST_WIDE_INT,
 extern rtx extract_bit_field (rtx, unsigned HOST_WIDE_INT,

-                             unsigned HOST_WIDE_INT, int, rtx,
+                             unsigned HOST_WIDE_INT, int, bool, rtx,

                              enum machine_mode, enum machine_mode);
                              enum machine_mode, enum machine_mode);

+extern rtx extract_low_bits (enum machine_mode, enum machine_mode, rtx);

 extern rtx expand_mult (enum machine_mode, rtx, rtx, rtx, int);
 extern rtx expand_mult_highpart_adjust (enum machine_mode, rtx, rtx, rtx, rtx, int);
 
 extern rtx assemble_static_space (unsigned HOST_WIDE_INT);
 extern rtx expand_mult (enum machine_mode, rtx, rtx, rtx, int);
 extern rtx expand_mult_highpart_adjust (enum machine_mode, rtx, rtx, rtx, rtx, int);
 
 extern rtx assemble_static_space (unsigned HOST_WIDE_INT);

-extern int safe_from_p (rtx, tree, int);
+extern int safe_from_p (const_rtx, tree, int);
+extern bool split_comparison (enum rtx_code, enum machine_mode,
+                             enum rtx_code *, enum rtx_code *);

 
 /* Call this once to initialize the contents of the optabs
    appropriately for the current target machine.  */
 
 /* Call this once to initialize the contents of the optabs
    appropriately for the current target machine.  */


@@ -745,7 +711,12 @@ extern void init_all_optabs (void);
 
 /* Call this to initialize an optab function entry.  */
 extern rtx init_one_libfunc (const char *);
 
 /* Call this to initialize an optab function entry.  */
 extern rtx init_one_libfunc (const char *);

+extern rtx set_user_assembler_libfunc (const char *, const char *);
+
+/* Build a decl for a libfunc named NAME. */
+extern tree build_libfunc_function (const char *);

 
 

-extern int vector_mode_valid_p (enum machine_mode);
+/* Get the personality libfunc for a function decl.  */
+rtx get_personality_function (tree);

 
 #endif /* GCC_EXPR_H */
 
 #endif /* GCC_EXPR_H */