i386.h (QI_REGNO_P): New define.

	* config/i386/i386.h (QI_REGNO_P): New define.
	(ANY_QI_REGNO_P): Ditto.
	(GENERAL_REGNO_P): Use IN_RANGE macro.
	(QI_REG_P): Use QI_REGNO_P.
	(ANY_QI_REG_P): Use GENERAL_REGNO_P and QI_REGNO_P.
	(HARD_REGNO_CALLER_SAVE_MODE): Use QI_REGNO_P.
	* config/i386/i386.c (ix86_hard_regno_mode_ok): Ditto.
	(x86_extended_QIreg_mentioned_p): Ditto.  Also check if
	register is a general register.

From-SVN: r190141

gcc/ChangeLog

+2012-08-04  Uros Bizjak  <ubizjak@gmail.com>
+
+	* config/i386/i386.h (QI_REGNO_P): New define.
+	(ANY_QI_REGNO_P): Ditto.
+	(GENERAL_REGNO_P): Use IN_RANGE macro.
+	(QI_REG_P): Use QI_REGNO_P.
+	(ANY_QI_REG_P): Use GENERAL_REGNO_P and QI_REGNO_P.
+	(HARD_REGNO_CALLER_SAVE_MODE): Use QI_REGNO_P.
+	* config/i386/i386.c (ix86_hard_regno_mode_ok): Ditto.
+	(x86_extended_QIreg_mentioned_p): Ditto.  Also check if
+	register is a general register.
+
 2012-08-03  Uros Bizjak  <ubizjak@gmail.com>
 
 	* config/i386/sync.md (*atomic_fetch_add_cmp<mode>): Use

gcc/config/i386/i386.c

@@ -5402,7 +5402,7 @@ ix86_function_regparm (const_tree type, const_tree decl)
 	     so less registers should be used for argument passing.
 	     This functionality can be overriden by an explicit
 	     regparm value.  */
-	  for (regno = 0; regno <= DI_REG; regno++)
+	  for (regno = AX_REG; regno <= DI_REG; regno++)
 	    if (fixed_regs[regno])
 	      globals++;
 
@@ -32067,7 +32067,7 @@ ix86_hard_regno_mode_ok (int regno, enum machine_mode mode)
     {
       /* Take care for QImode values - they can be in non-QI regs,
 	 but then they do cause partial register stalls.  */
-      if (regno <= BX_REG || TARGET_64BIT)
+      if (TARGET_64BIT || QI_REGNO_P (regno))
 	return true;
       if (!TARGET_PARTIAL_REG_STALL)
 	return true;
@@ -33668,8 +33668,8 @@ x86_extended_QIreg_mentioned_p (rtx insn)
   int i;
   extract_insn_cached (insn);
   for (i = 0; i < recog_data.n_operands; i++)
-    if (REG_P (recog_data.operand[i])
-	&& REGNO (recog_data.operand[i]) > BX_REG)
+    if (GENERAL_REG_P (recog_data.operand[i])
+	&& !QI_REGNO_P (REGNO (recog_data.operand[i])))
        return true;
   return false;
 }

gcc/config/i386/i386.h

@@ -1091,7 +1091,7 @@ enum target_cpu_default
    : (MODE) == VOIDmode && (NREGS) != 1 ? VOIDmode			\
    : (MODE) == VOIDmode ? choose_hard_reg_mode ((REGNO), (NREGS), false) \
    : (MODE) == HImode && !TARGET_PARTIAL_REG_STALL ? SImode		\
-   : (MODE) == QImode && (REGNO) > BX_REG && !TARGET_64BIT ? SImode 	\
+   : (MODE) == QImode && !(TARGET_64BIT || QI_REGNO_P (REGNO)) ? SImode	\
    : (MODE))
 
 /* The only ABI that saves SSE registers across calls is Win64 (thus no
@@ -1316,29 +1316,32 @@ enum reg_class
    registers.  */
 #define TARGET_SMALL_REGISTER_CLASSES_FOR_MODE_P hook_bool_mode_true
 
-#define QI_REG_P(X) (REG_P (X) && REGNO (X) <= BX_REG)
-
-#define GENERAL_REGNO_P(N) \
-  ((N) <= STACK_POINTER_REGNUM || REX_INT_REGNO_P (N))
+#define QI_REG_P(X) (REG_P (X) && QI_REGNO_P (REGNO (X)))
+#define QI_REGNO_P(N) IN_RANGE ((N), AX_REG, BX_REG)
 
 #define GENERAL_REG_P(X) \
   (REG_P (X) && GENERAL_REGNO_P (REGNO (X)))
+#define GENERAL_REGNO_P(N) \
+  (IN_RANGE ((N), AX_REG, SP_REG) || REX_INT_REGNO_P (N))
 
-#define ANY_QI_REG_P(X) (TARGET_64BIT ? GENERAL_REG_P(X) : QI_REG_P (X))
+#define ANY_QI_REG_P(X) (REG_P (X) && ANY_QI_REGNO_P (REGNO (X)))
+#define ANY_QI_REGNO_P(N) \
+  (TARGET_64BIT ? GENERAL_REGNO_P (N) : QI_REGNO_P (N))
 
+#define REX_INT_REG_P(X) (REG_P (X) && REX_INT_REGNO_P (REGNO (X)))
 #define REX_INT_REGNO_P(N) \
   IN_RANGE ((N), FIRST_REX_INT_REG, LAST_REX_INT_REG)
-#define REX_INT_REG_P(X) (REG_P (X) && REX_INT_REGNO_P (REGNO (X)))
 
 #define FP_REG_P(X) (REG_P (X) && FP_REGNO_P (REGNO (X)))
 #define FP_REGNO_P(N) IN_RANGE ((N), FIRST_STACK_REG, LAST_STACK_REG)
+
 #define ANY_FP_REG_P(X) (REG_P (X) && ANY_FP_REGNO_P (REGNO (X)))
 #define ANY_FP_REGNO_P(N) (FP_REGNO_P (N) || SSE_REGNO_P (N))
 
 #define X87_FLOAT_MODE_P(MODE)	\
   (TARGET_80387 && ((MODE) == SFmode || (MODE) == DFmode || (MODE) == XFmode))
 
-#define SSE_REG_P(N) (REG_P (N) && SSE_REGNO_P (REGNO (N)))
+#define SSE_REG_P(X) (REG_P (X) && SSE_REGNO_P (REGNO (X)))
 #define SSE_REGNO_P(N)						\
   (IN_RANGE ((N), FIRST_SSE_REG, LAST_SSE_REG)			\
    || REX_SSE_REGNO_P (N))
@@ -1356,13 +1359,13 @@ enum reg_class
   (TARGET_FMA4 && ((MODE) == V4SFmode || (MODE) == V2DFmode \
 		  || (MODE) == V8SFmode || (MODE) == V4DFmode))
 
-#define MMX_REG_P(XOP) (REG_P (XOP) && MMX_REGNO_P (REGNO (XOP)))
+#define MMX_REG_P(X) (REG_P (X) && MMX_REGNO_P (REGNO (X)))
 #define MMX_REGNO_P(N) IN_RANGE ((N), FIRST_MMX_REG, LAST_MMX_REG)
 
-#define STACK_REG_P(XOP) (REG_P (XOP) && STACK_REGNO_P (REGNO (XOP)))
+#define STACK_REG_P(X) (REG_P (X) && STACK_REGNO_P (REGNO (X)))
 #define STACK_REGNO_P(N) IN_RANGE ((N), FIRST_STACK_REG, LAST_STACK_REG)
 
-#define STACK_TOP_P(XOP) (REG_P (XOP) && REGNO (XOP) == FIRST_STACK_REG)
+#define STACK_TOP_P(X) (REG_P (X) && REGNO (X) == FIRST_STACK_REG)
 
 #define CC_REG_P(X) (REG_P (X) && CC_REGNO_P (REGNO (X)))
 #define CC_REGNO_P(X) ((X) == FLAGS_REG || (X) == FPSR_REG)