Replace MAX_UNITS_PER_WORD with MIN_UNITS_PER_WORD.

From-SVN: r8904

gcc/caller-save.c

 /* Save and restore call-clobbered registers which are live across a call.
-   Copyright (C) 1989, 1992, 1994 Free Software Foundation, Inc.
+   Copyright (C) 1989, 1992, 1994, 1995 Free Software Foundation, Inc.
 
 This file is part of GNU CC.
 
@@ -32,8 +32,8 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
 #define MAX_MOVE_MAX MOVE_MAX
 #endif
 
-#ifndef MAX_UNITS_PER_WORD
-#define MAX_UNITS_PER_WORD UNITS_PER_WORD
+#ifndef MIN_UNITS_PER_WORD
+#define MIN_UNITS_PER_WORD UNITS_PER_WORD
 #endif
 
 /* Modes for each hard register that we can save.  The smallest mode is wide
@@ -42,13 +42,13 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
    If that is not possible the save is done one register at a time.  */
 
 static enum machine_mode 
-  regno_save_mode[FIRST_PSEUDO_REGISTER][MAX_MOVE_MAX / MAX_UNITS_PER_WORD + 1];
+  regno_save_mode[FIRST_PSEUDO_REGISTER][MAX_MOVE_MAX / MIN_UNITS_PER_WORD + 1];
 
 /* For each hard register, a place on the stack where it can be saved,
    if needed.  */
 
 static rtx 
-  regno_save_mem[FIRST_PSEUDO_REGISTER][MAX_MOVE_MAX / MAX_UNITS_PER_WORD + 1];
+  regno_save_mem[FIRST_PSEUDO_REGISTER][MAX_MOVE_MAX / MIN_UNITS_PER_WORD + 1];
 
 /* We will only make a register eligible for caller-save if it can be
    saved in its widest mode with a simple SET insn as long as the memory
@@ -57,9 +57,9 @@ static rtx
    be recognized.  */
 
 static enum insn_code 
-  reg_save_code[FIRST_PSEUDO_REGISTER][MAX_MOVE_MAX / MAX_UNITS_PER_WORD + 1];
+  reg_save_code[FIRST_PSEUDO_REGISTER][MAX_MOVE_MAX / MIN_UNITS_PER_WORD + 1];
 static enum insn_code 
-  reg_restore_code[FIRST_PSEUDO_REGISTER][MAX_MOVE_MAX / MAX_UNITS_PER_WORD + 1];
+  reg_restore_code[FIRST_PSEUDO_REGISTER][MAX_MOVE_MAX / MIN_UNITS_PER_WORD + 1];
 
 /* Set of hard regs currently live (during scan of all insns).  */
 

gcc/config/h8300/h8300.h

 /* Definitions of target machine for GNU compiler. 
    Hitachi H8/300 version generating coff 
-   Copyright (C) 1992, 1993, 1994 Free Software Foundation, Inc.
+   Copyright (C) 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
    Contributed by Steve Chamberlain (sac@cygnus.com),
    Jim Wilson (wilson@cygnus.com), and Doug Evans (dje@cygnus.com).
 
@@ -151,7 +151,7 @@ extern int target_flags;
 
 /* Width of a word, in units (bytes).  */
 #define UNITS_PER_WORD		(TARGET_H8300H ? 4 : 2)
-#define MAX_UNITS_PER_WORD	4
+#define MIN_UNITS_PER_WORD	2
 
 /* Width in bits of a pointer.
    See also the macro `Pmode' defined below.  */

gcc/config/mips/mips.h

@@ -967,7 +967,7 @@ do {							\
 
 /* Width of a word, in units (bytes).  */
 #define UNITS_PER_WORD (TARGET_64BIT ? 8 : 4)
-#define MAX_UNITS_PER_WORD 8
+#define MIN_UNITS_PER_WORD 4
 
 /* For MIPS, width of a floating point register.  */
 #define UNITS_PER_FPREG (TARGET_FLOAT64 ? 8 : 4)

gcc/config/rs6000/rs6000.h

@@ -309,7 +309,7 @@ extern char *rs6000_cpu_string;
 
 /* Width of a word, in units (bytes).  */
 #define UNITS_PER_WORD (TARGET_POWERPC64 ? 8 : 4)
-#define MAX_UNITS_PER_WORD 8
+#define MIN_UNITS_PER_WORD 4
 #define UNITS_PER_FP_WORD 8
 
 /* Type used for ptrdiff_t, as a string used in a declaration.  */

gcc/config/sparc/sparc.h

 /* Definitions of target machine for GNU compiler, for Sun SPARC.
-   Copyright (C) 1987, 1988, 1989, 1992, 1994 Free Software Foundation, Inc.
+   Copyright (C) 1987, 88, 89, 92, 94, 1995 Free Software Foundation, Inc.
    Contributed by Michael Tiemann (tiemann@cygnus.com).
    64 bit SPARC V9 support by Michael Tiemann, Jim Wilson, and Doug Evans,
    at Cygnus Support.
@@ -369,7 +369,7 @@ extern int target_flags;
 
 /* Width of a word, in units (bytes).  */
 #define UNITS_PER_WORD		(TARGET_V9 ? 8 : 4)
-#define MAX_UNITS_PER_WORD	8
+#define MIN_UNITS_PER_WORD	4
 
 /* Now define the sizes of the C data types.  */