2005-01-31 Dale Johannesen <dalej@apple.com>

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

diff --git a/gcc/regs.h b/gcc/regs.h
index b2aeb5f..3d5fec4 100644 (file)
--- a/gcc/regs.h
+++ b/gcc/regs.h
@@ -1,6 +1,6 @@
 /* Define per-register tables for data flow info and register allocation.
    Copyright (C) 1987, 1993, 1994, 1995, 1996, 1997, 1998,
-   1999, 2000, 2003 Free Software Foundation, Inc.
+   1999, 2000, 2003, 2004 Free Software Foundation, Inc.
 
 This file is part of GCC.
 
@@ -19,8 +19,11 @@ 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_REGS_H
+#define GCC_REGS_H
 
 #include "varray.h"
+#include "obstack.h"
 #include "hard-reg-set.h"
 #include "basic-block.h"
 
@@ -48,7 +51,6 @@ typedef struct reg_info_def
 {                              /* fields set by reg_scan */
   int first_uid;               /* UID of first insn to use (REG n) */
   int last_uid;                        /* UID of last insn to use (REG n) */
-  int last_note_uid;           /* UID of last note to use (REG n) */
 
                                /* fields set by reg_scan & flow_analysis */
   int sets;                    /* # of times (REG n) is set */
@@ -60,14 +62,10 @@ typedef struct reg_info_def
   int live_length;             /* # of instructions (REG n) is live */
   int calls_crossed;           /* # of calls (REG n) is live across */
   int basic_block;             /* # of basic blocks (REG n) is used in */
-  char changes_mode;           /* whether (SUBREG (REG n)) exists and
-                                  is illegal.  */
 } reg_info;
 
 extern varray_type reg_n_info;
 
-extern bitmap_head subregs_of_mode;
-
 /* Indexed by n, gives number of times (REG n) is used or set.  */
 
 #define REG_N_REFS(N) (VARRAY_REG (reg_n_info, N)->refs)
@@ -153,11 +151,18 @@ extern bitmap_head subregs_of_mode;
 
 extern short *reg_renumber;
 
-/* Vector indexed by hardware reg
-   saying whether that reg is ever used.  */
+/* Vector indexed by hardware reg saying whether that reg is ever used.  */
 
 extern char regs_ever_live[FIRST_PSEUDO_REGISTER];
 
+/* Like regs_ever_live, but saying whether reg is set by asm statements.  */
+
+extern char regs_asm_clobbered[FIRST_PSEUDO_REGISTER];
+
+/* Vector indexed by machine mode saying whether there are regs of that mode.  */
+
+extern bool have_regs_of_mode [MAX_MACHINE_MODE];
+
 /* For each hard register, the widest mode object that it can contain.
    This will be a MODE_INT mode if the register can hold integers.  Otherwise
    it will be a MODE_FLOAT or a MODE_CC mode, whichever is valid for the
@@ -180,10 +185,6 @@ extern enum machine_mode reg_raw_mode[FIRST_PSEUDO_REGISTER];
 
 #define REGNO_LAST_UID(N) (VARRAY_REG (reg_n_info, N)->last_uid)
 
-/* Similar, but includes insns that mention the reg in their notes.  */
-
-#define REGNO_LAST_NOTE_UID(N) (VARRAY_REG (reg_n_info, N)->last_note_uid)
-
 /* List made of EXPR_LIST rtx's which gives pairs of pseudo registers
    that have to go in the same hard reg.  */
 extern rtx regs_may_share;
@@ -221,3 +222,8 @@ extern int caller_save_needed;
 
 /* Allocate reg_n_info tables */
 extern void allocate_reg_info (size_t, int, int);
+
+/* Specify number of hard registers given machine mode occupy.  */
+extern unsigned char hard_regno_nregs[FIRST_PSEUDO_REGISTER][MAX_MACHINE_MODE];
+
+#endif /* GCC_REGS_H */