PR c++/15815

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

diff --git a/gcc/regs.h b/gcc/regs.h
index 5a95385..c100bde 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.
 
@@ -19,6 +19,8 @@ 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 "hard-reg-set.h"
@@ -60,7 +62,7 @@ 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 
+  char changes_mode;           /* whether (SUBREG (REG n)) exists and
                                   is illegal.  */
 } reg_info;
 
@@ -76,7 +78,7 @@ extern bitmap_head subregs_of_mode;
 
 #define REG_FREQ(N) (VARRAY_REG (reg_n_info, N)->freq)
 
-/* The weights for each insn varries from 0 to REG_FREQ_BASE. 
+/* The weights for each insn varries from 0 to REG_FREQ_BASE.
    This constant does not need to be high, as in infrequently executed
    regions we want to count instructions equivalently to optimize for
    size instead of speed.  */
@@ -153,11 +155,14 @@ 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];
+
 /* 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
@@ -210,14 +215,19 @@ extern int caller_save_needed;
 /* Select a register mode required for caller save of hard regno REGNO.  */
 #ifndef HARD_REGNO_CALLER_SAVE_MODE
 #define HARD_REGNO_CALLER_SAVE_MODE(REGNO, NREGS, MODE) \
-  choose_hard_reg_mode (REGNO, NREGS)
+  choose_hard_reg_mode (REGNO, NREGS, false)
 #endif
 
-/* Registers that get partially clobbered by a call in a given mode. 
+/* Registers that get partially clobbered by a call in a given mode.
    These must not be call used registers.  */
 #ifndef HARD_REGNO_CALL_PART_CLOBBERED
 #define HARD_REGNO_CALL_PART_CLOBBERED(REGNO, MODE) 0
 #endif
 
 /* Allocate reg_n_info tables */
-extern void allocate_reg_info PARAMS ((size_t, int, int));
+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 */