(location_or_const_value_attribute, case CONCAT): Add.

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

diff --git a/gcc/regs.h b/gcc/regs.h
index da41187..fe0d1ac 100644 (file)
--- a/gcc/regs.h
+++ b/gcc/regs.h
@@ -1,5 +1,5 @@
 /* Define per-register tables for data flow info and register allocation.
-   Copyright (C) 1987, 1993 Free Software Foundation, Inc.
+   Copyright (C) 1987, 1993, 1994, 1995 Free Software Foundation, Inc.
 
 This file is part of GNU CC.
 
@@ -15,7 +15,8 @@ GNU General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with GNU CC; see the file COPYING.  If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
 
 
 
@@ -53,6 +54,12 @@ extern short *reg_n_sets;
 
 extern short *reg_n_deaths;
 
+/* Indexed by N; says whether a pseudo register N was ever used
+   within a SUBREG that changes the size of the reg.  Some machines prohibit
+   such objects to be in certain (usually floating-point) registers.  */
+
+extern char *reg_changes_size;
+
 /* Get the number of consecutive words required to hold pseudo-reg N.  */
 
 #define PSEUDO_REGNO_SIZE(N) \
@@ -103,6 +110,13 @@ extern char regs_ever_live[FIRST_PSEUDO_REGISTER];
 
 extern char *reg_names[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
+   register.  */
+
+extern enum machine_mode reg_raw_mode[FIRST_PSEUDO_REGISTER];
+
 /* Vector indexed by regno; gives uid of first insn using that reg.
    This is computed by reg_scan for use by cse and loop.
    It is sometimes adjusted for subsequent changes during loop,
@@ -122,12 +136,18 @@ extern int *regno_last_uid;
 
 extern int *regno_last_note_uid;
 
+/* This is reset to LAST_VIRTUAL_REGISTER + 1 at the start of each function.
+   After rtl generation, it is 1 plus the largest register number used.  */
+
+extern int reg_rtx_no;
+
 /* Vector indexed by regno; contains 1 for a register is considered a pointer.
    Reloading, etc. will use a pointer register rather than a non-pointer
    as the base register in an address, when there is a choice of two regs.  */
 
 extern char *regno_pointer_flag;
 #define REGNO_POINTER_FLAG(REGNO) regno_pointer_flag[REGNO]
+extern int regno_pointer_flag_length;
 
 /* List made of EXPR_LIST rtx's which gives pairs of pseudo registers
    that have to go in the same hard reg.  */
@@ -151,6 +171,12 @@ extern int caller_save_needed;
 #define CALLER_SAVE_PROFITABLE(REFS, CALLS)  (4 * (CALLS) < (REFS))
 #endif
 
+/* On most machines a register class is likely to be spilled if it
+   only has one register.  */
+#ifndef CLASS_LIKELY_SPILLED_P
+#define CLASS_LIKELY_SPILLED_P(CLASS) (reg_class_size[(int) (CLASS)] == 1)
+#endif
+
 /* Allocated in local_alloc.  */
 
 /* A list of SCRATCH rtl allocated by local-alloc.  */