* rtl.def (LABEL_REF): Remove the field for LABEL_NEXTREF.

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

diff --git a/gcc/rtl.h b/gcc/rtl.h
index 236c8a1..4fa58b8 100644 (file)
--- a/gcc/rtl.h
+++ b/gcc/rtl.h
@@ -178,7 +178,7 @@ typedef union rtunion_def rtunion;
 
 /* This structure remembers the position of a SYMBOL_REF within an
    object_block structure.  A SYMBOL_REF only provides this information
-   if SYMBOL_REF_IN_BLOCK_P is true.  */
+   if SYMBOL_REF_HAS_BLOCK_INFO_P is true.  */
 struct block_symbol GTY(()) {
   /* The usual SYMBOL_REF fields.  */
   rtunion GTY ((skip)) fld[3];
@@ -212,7 +212,7 @@ struct object_block GTY(())
      order of increasing offset and the following conditions will
      hold for each element X:
 
-        SYMBOL_REF_IN_BLOCK_P (X)
+        SYMBOL_REF_HAS_BLOCK_INFO_P (X)
         !SYMBOL_REF_ANCHOR_P (X)
         SYMBOL_REF_BLOCK (X) == [address of this structure]
         SYMBOL_REF_BLOCK_OFFSET (X) >= 0.  */
@@ -222,7 +222,7 @@ struct object_block GTY(())
      in order of increasing offset, and then increasing TLS model.
      The following conditions will hold for each element X in this vector:
 
-        SYMBOL_REF_IN_BLOCK_P (X)
+        SYMBOL_REF_HAS_BLOCK_INFO_P (X)
         SYMBOL_REF_ANCHOR_P (X)
         SYMBOL_REF_BLOCK (X) == [address of this structure]
         SYMBOL_REF_BLOCK_OFFSET (X) >= 0.  */
@@ -529,7 +529,7 @@ struct rtvec_def GTY(()) {
 #define BLOCK_SYMBOL_CHECK(RTX) __extension__                          \
 ({ rtx const _symbol = (RTX);                                          \
    unsigned int flags = RTL_CHECKC1 (_symbol, 1, SYMBOL_REF).rt_int;   \
-   if ((flags & SYMBOL_FLAG_IN_BLOCK) == 0)                            \
+   if ((flags & SYMBOL_FLAG_HAS_BLOCK_INFO) == 0)                      \
      rtl_check_failed_block_symbol (__FILE__, __LINE__,                        \
                                    __FUNCTION__);                      \
    &_symbol->u.block_sym; })
@@ -961,13 +961,6 @@ enum label_kind
    The chain eventually winds up at the CODE_LABEL: it is circular.  */
 #define LABEL_REFS(LABEL) XCEXP (LABEL, 5, CODE_LABEL)
 \f
-/* 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.  */
@@ -1318,11 +1311,11 @@ do {                                            \
 #define SYMBOL_REF_EXTERNAL_P(RTX) \
   ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_EXTERNAL) != 0)
 /* Set if this symbol has a block_symbol structure associated with it.  */
-#define SYMBOL_FLAG_IN_BLOCK   (1 << 7)
-#define SYMBOL_REF_IN_BLOCK_P(RTX) \
-  ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_IN_BLOCK) != 0)
+#define SYMBOL_FLAG_HAS_BLOCK_INFO (1 << 7)
+#define SYMBOL_REF_HAS_BLOCK_INFO_P(RTX) \
+  ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_HAS_BLOCK_INFO) != 0)
 /* Set if this symbol is a section anchor.  SYMBOL_REF_ANCHOR_P implies
-   SYMBOL_REF_IN_BLOCK_P.  */
+   SYMBOL_REF_HAS_BLOCK_INFO_P.  */
 #define SYMBOL_FLAG_ANCHOR     (1 << 8)
 #define SYMBOL_REF_ANCHOR_P(RTX) \
   ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_ANCHOR) != 0)
@@ -1331,13 +1324,15 @@ do {                                            \
 #define SYMBOL_FLAG_MACH_DEP_SHIFT     9
 #define SYMBOL_FLAG_MACH_DEP           (1 << SYMBOL_FLAG_MACH_DEP_SHIFT)
 
-/* The block to which the given SYMBOL_REF belongs, or NULL if none.
-   Only valid if SYMBOL_REF_IN_BLOCK_P (RTX).  */
+/* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the object_block
+   structure to which the symbol belongs, or NULL if it has not been
+   assigned a block.  */
 #define SYMBOL_REF_BLOCK(RTX) (BLOCK_SYMBOL_CHECK (RTX)->block)
 
-/* The byte offset of the given SYMBOL_REF from the start of its block,
-   or a negative value if the symbol has not yet been assigned a position.
-   Only valid if SYMBOL_REF_IN_BLOCK_P (RTX).  */
+/* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the offset of RTX from
+   the first object in SYMBOL_REF_BLOCK (RTX).  The value is negative if
+   RTX has not yet been assigned to a block, or it has not been given an
+   offset within that block.  */
 #define SYMBOL_REF_BLOCK_OFFSET(RTX) (BLOCK_SYMBOL_CHECK (RTX)->offset)
 
 /* Define a macro to look for REG_INC notes,
@@ -1721,7 +1716,6 @@ extern int may_trap_after_code_motion_p (rtx);
 extern int may_trap_or_fault_p (rtx);
 extern int inequality_comparisons_p (rtx);
 extern rtx replace_rtx (rtx, rtx, rtx);
-extern rtx replace_regs (rtx, rtx *, unsigned int, int);
 extern int replace_label (rtx *, void *);
 extern int rtx_referenced_p (rtx, rtx);
 extern bool tablejump_p (rtx, rtx *, rtx *);
@@ -1732,7 +1726,6 @@ extern rtx regno_use_in (unsigned int, rtx);
 extern int auto_inc_p (rtx);
 extern int in_expr_list_p (rtx, rtx);
 extern void remove_node_from_expr_list (rtx, rtx *);
-extern int insns_safe_to_move_p (rtx, rtx, rtx *);
 extern int loc_mentioned_in_p (rtx *, rtx);
 extern rtx find_first_parameter_load (rtx, rtx);
 extern bool keep_with_call_p (rtx);
@@ -2133,7 +2126,6 @@ extern rtx move_by_pieces (rtx, rtx, unsigned HOST_WIDE_INT,
                           unsigned int, int);
 
 /* In flow.c */
-extern unsigned int recompute_reg_usage (void);
 extern void delete_dead_jumptables (void);
 extern void print_rtl_with_bb (FILE *, rtx);
 extern void dump_flow_info (FILE *, int);
@@ -2167,7 +2159,6 @@ extern void init_reg_sets (void);
 extern void regclass_init (void);
 extern void regclass (rtx, int);
 extern void reg_scan (rtx, unsigned int);
-extern void reg_scan_update (rtx, rtx, unsigned int);
 extern void fix_register (const char *, int, int);
 extern void init_subregs_of_mode (void);
 extern void record_subregs_of_mode (rtx);