*** empty log message ***

From-SVN: r192

gcc/machmode.h

 /* Machine mode definitions for GNU C-Compiler; included by rtl.h and tree.h.
-   Copyright (C) 1990-1991 Free Software Foundation, Inc.
+   Copyright (C) 1991  Free Software Foundation, Inc.
 
 This file is part of GNU CC.
 

gcc/output.h

 /* Declarations for insn-output.c.  These functions are defined in recog.c,
    final.c, and varasm.c.
-   Copyright (C) 1987-1991 Free Software Foundation, Inc.
+   Copyright (C) 1987, 1991 Free Software Foundation, Inc.
 
 This file is part of GNU CC.
 

gcc/print-rtl.c

 /* Print RTL for GNU C Compiler.
-   Copyright (C) 1987-1991 Free Software Foundation, Inc.
+   Copyright (C) 1987, 1991 Free Software Foundation, Inc.
 
 This file is part of GNU CC.
 

gcc/recog.c

 /* Subroutines used by or related to instruction recognition.
-   Copyright (C) 1987-1991 Free Software Foundation, Inc.
+   Copyright (C) 1987, 1988, 1991 Free Software Foundation, Inc.
 
 This file is part of GNU CC.
 

gcc/regclass.c

 /* Compute register class preferences for pseudo-registers.
-   Copyright (C) 1987-1991 Free Software Foundation, Inc.
+   Copyright (C) 1987, 1988, 1991 Free Software Foundation, Inc.
 
 This file is part of GNU CC.
 
@@ -327,7 +327,7 @@ fix_register (name, fixed, call_used)
      the register info.  */
 
   for (i = 0; i < FIRST_PSEUDO_REGISTER; i++)
-    if (!strcmp (reg_names[i], name))
+    if (reg_names[i][0] && ! strcmp (reg_names[i], name))
       {
 	fixed_regs[i] = fixed;
 	call_used_regs[i] = call_used;

gcc/rtl.c

 /* Allocate and read RTL for GNU C Compiler.
-   Copyright (C) 1987-1991 Free Software Foundation, Inc.
+   Copyright (C) 1987, 1988, 1991 Free Software Foundation, Inc.
 
 This file is part of GNU CC.
 

gcc/rtl.h

 /* Register Transfer Language (RTL) definitions for GNU C-Compiler
-   Copyright (C) 1987-1991 Free Software Foundation, Inc.
+   Copyright (C) 1987, 1991 Free Software Foundation, Inc.
 
 This file is part of GNU CC.
 
@@ -649,22 +649,21 @@ extern rtx pc_rtx;
 extern rtx cc0_rtx;
 extern rtx const0_rtx;
 extern rtx const1_rtx;
+extern rtx const2_rtx;
 extern rtx constm1_rtx;
 extern rtx const_true_rtx;
-extern rtx fconst0_rtx;
-extern rtx fconst1_rtx;
-extern rtx fconst2_rtx;
-extern rtx dconst0_rtx;
-extern rtx dconst1_rtx;
-extern rtx dconst2_rtx;
-
-/* Returns a constant 0 rtx in mode MODE.  */
-
-#define CONST0_RTX(MODE) \
- ((MODE == SFmode) ? fconst0_rtx			\
-  : ((MODE == DFmode) ? dconst0_rtx			\
-     : ((GET_MODE_CLASS (MODE) == MODE_INT) ? const0_rtx	\
-        : (abort (), NULL_RTX))))
+
+extern rtx const_tiny_rtx[3][(int) MAX_MACHINE_MODE];
+
+/* Returns a constant 0 rtx in mode MODE.  Integer modes are treated the 
+   same as VOIDmode.  */
+
+#define CONST0_RTX(MODE) (const_tiny_rtx[0][(int) (MODE)])
+
+/* Likewise, for the constants 1 and 2.  */
+
+#define CONST1_RTX(MODE) (const_tiny_rtx[1][(int) (MODE)])
+#define CONST2_RTX(MODE) (const_tiny_rtx[2][(int) (MODE)])
 
 /* All references to certain hard regs, except those created
    by allocating pseudo regs into them (when that's possible),