(VALUE_REGNO, HARD_REGNO_MODE_OK): Add missing #undef.

(HARD_REGNO_MODE_OK): Properly check for floating-point registers.
Register 16 is AP and not floating.

From-SVN: r4386

gcc/config/i386/sco.h

@@ -60,14 +60,16 @@
 /* If no 387, use the general regs to return floating values,
    since this system does not emulate the 80387.  */
 
+#undef VALUE_REGNO
 #define VALUE_REGNO(MODE) \
   ((TARGET_80387 && ((MODE) == SFmode || (MODE) == DFmode))
    ? FIRST_FLOAT_REG : 0)
 
+#undef HARD_REGNO_MODE_OK
 #define HARD_REGNO_MODE_OK(REGNO, MODE)					  \
   ((REGNO) < 2 ? 1							  \
    : (REGNO) < 4 ? 1							  \
-   : (REGNO) >= 8 ? ((GET_MODE_CLASS (MODE) == MODE_FLOAT		\
+   : FP_REGNO_P (REGNO) ? ((GET_MODE_CLASS (MODE) == MODE_FLOAT		  \
                           || GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT) \
                          && TARGET_80387				  \
                          && GET_MODE_UNIT_SIZE (MODE) <= 8)		  \