i386.md (all HI and QI mode non-move patterns): Conditionize by TARGET_[HQ]IMODE_MATH.

	* i386.md (all HI and QI mode non-move patterns):  Conditionize
	by TARGET_[HQ]IMODE_MATH.
	* i386.h (x86_himode_math, x86_qimode_math, x86_promote_hi_regs,
	x86_promote_qi_regs): Declare.
	(TARGET_HIMODE_MATH, TARGET_QIMODE_MATH, TARGET_PROMOTE_HI_REGS,
	TARGET_PROMOTE_QI_REGS): New macros.
	(PROMOTE_MODE): New macro.
	* i386.c (x86_himode_math, x86_qimode_math, x86_promote_hi_regs,
	x86_promote_qi_regs): New global variables.

From-SVN: r32588

gcc/ChangeLog

+Thu Mar 16 17:03:10 MET 2000  Jan Hubicka  <jh@suse.cz>
+
+	* i386.md (all HI and QI mode non-move patterns):  Conditionize
+	by TARGET_[HQ]IMODE_MATH.
+	* i386.h (x86_himode_math, x86_qimode_math, x86_promote_hi_regs,
+	x86_promote_qi_regs): Declare.
+	(TARGET_HIMODE_MATH, TARGET_QIMODE_MATH, TARGET_PROMOTE_HI_REGS,
+	TARGET_PROMOTE_QI_REGS): New macros.
+	(PROMOTE_MODE): New macro.
+	* i386.c (x86_himode_math, x86_qimode_math, x86_promote_hi_regs,
+	x86_promote_qi_regs): New global variables.
+
 Thu Mar 16 16:50:44 MET 2000  Jan Hubicka  <jh@suse.cz>
 
 	* calls.c (emit_library_call_value_1): Break out from ...; handle

gcc/config/i386/i386.c

@@ -214,6 +214,10 @@ const int x86_read_modify = ~(m_PENT | m_PPRO);
 const int x86_split_long_moves = m_PPRO;
 const int x86_promote_QImode = m_K6 | m_PENT | m_386 | m_486;
 const int x86_single_stringop = m_386;
+const int x86_qimode_math = ~(0);
+const int x86_promote_qi_regs = 0;
+const int x86_himode_math = ~(m_PPRO);
+const int x86_promote_hi_regs = m_PPRO;
 
 #define AT_BP(mode) (gen_rtx_MEM ((mode), hard_frame_pointer_rtx))
 

gcc/config/i386/i386.h

@@ -163,6 +163,8 @@ extern const int x86_use_loop, x86_use_fiop, x86_use_mov0;
 extern const int x86_use_cltd, x86_read_modify_write;
 extern const int x86_read_modify, x86_split_long_moves;
 extern const int x86_promote_QImode, x86_single_stringop;
+extern const int x86_himode_math, x86_qimode_math, x86_promote_qi_regs;
+extern const int x86_promote_hi_regs;
 
 #define TARGET_USE_LEAVE (x86_use_leave & CPUMASK)
 #define TARGET_PUSH_MEMORY (x86_push_memory & CPUMASK)
@@ -186,6 +188,10 @@ extern const int x86_promote_QImode, x86_single_stringop;
 #define TARGET_READ_MODIFY (x86_read_modify & CPUMASK)
 #define TARGET_PROMOTE_QImode (x86_promote_QImode & CPUMASK)
 #define TARGET_SINGLE_STRINGOP (x86_single_stringop & CPUMASK)
+#define TARGET_QIMODE_MATH (x86_qimode_math & CPUMASK)
+#define TARGET_HIMODE_MATH (x86_himode_math & CPUMASK)
+#define TARGET_PROMOTE_QI_REGS (x86_promote_qi_regs & CPUMASK)
+#define TARGET_PROMOTE_HI_REGS (x86_promote_hi_regs & CPUMASK)
 
 #define TARGET_STACK_PROBE (target_flags & MASK_STACK_PROBE)
 
@@ -1740,6 +1746,19 @@ while (0)
 
 #define PROMOTE_PROTOTYPES 1
 
+/* A macro to update M and UNSIGNEDP when an object whose type is
+   TYPE and which has the specified mode and signedness is to be
+   stored in a register.  This macro is only called when TYPE is a
+   scalar type.
+
+   On i386 it is sometimes usefull to promote HImode and QImode
+   quantities to SImode.  The choice depends on target type.  */
+
+#define PROMOTE_MODE(MODE, UNSIGNEDP, TYPE) 		\
+  if (((MODE) == HImode && TARGET_PROMOTE_HI_REGS)	\
+      || ((MODE) == QImode && TARGET_PROMOTE_QI_REGS))	\
+    (MODE) = SImode;
+
 /* Specify the machine mode that pointers have.
    After generation of rtl, the compiler makes no further distinction
    between pointers and any other objects of this machine mode.  */