avr.c (avr_hard_regno_mode_ok): Disallow QImode in stack pointer regs.

	* config/avr/avr.c (avr_hard_regno_mode_ok): Disallow QImode in stack
	pointer regs.
	* config/avr/avr.h (REGISTER_NAMES): Rename "__SPL__" and "__SPH__"
	regs to "__SP_L__" and "__SP_H__".

From-SVN: r123263

gcc/ChangeLog

+2006-03-27  Anatoly Sokolov <aesok@post.ru>
+
+	* config/avr/avr.c (avr_hard_regno_mode_ok): Disallow QImode in stack
+	pointer regs.
+	* config/avr/avr.h (REGISTER_NAMES): Rename "__SPL__" and "__SPH__"
+	regs to "__SP_L__" and "__SP_H__".
+
 2007-03-27  Richard Guenther  <rguenther@suse.de>
 
 	* tree-dfa.c (get_ref_base_and_extent): Replace bit_offset and

gcc/config/avr/avr.c

@@ -5610,6 +5610,10 @@ jump_over_one_insn_p (rtx insn, rtx dest)
 int
 avr_hard_regno_mode_ok (int regno, enum machine_mode mode)
 {
+  /* Disallow QImode in stack pointer regs.  */
+  if ((regno == REG_SP || regno == (REG_SP + 1)) && mode == QImode)
+    return 0;
+
   /* The only thing that can go into registers r28:r29 is a Pmode.  */
   if (regno == REG_Y && mode == Pmode)
     return 1;

gcc/config/avr/avr.h

@@ -624,7 +624,7 @@ sprintf (STRING, "*.%s%lu", PREFIX, (unsigned long)(NUM))
     "r8","r9","r10","r11","r12","r13","r14","r15",	\
     "r16","r17","r18","r19","r20","r21","r22","r23",	\
     "r24","r25","r26","r27","r28","r29","r30","r31",	\
-    "__SPL__","__SPH__","argL","argH"}
+    "__SP_L__","__SP_H__","argL","argH"}
 
 #define FINAL_PRESCAN_INSN(insn, operand, nop) final_prescan_insn (insn, operand,nop)