So a value padded in memory at the upper end can't go in a register.
For a little-endian machine, the reverse is true. */
+/* ??? Perhaps later rename this to FUNCTION_ARG_MUST_PASS_IN_STACK?
+ (although it is a little long). */
+
+#ifndef MUST_PASS_IN_STACK
+
#if BYTES_BIG_ENDIAN
#define MUST_PASS_IN_STACK_BAD_PADDING upward
#else
|| ((MODE) == BLKmode \
&& (FUNCTION_ARG_PADDING (MODE, TYPE) \
== MUST_PASS_IN_STACK_BAD_PADDING))))
+#endif
/* Nonzero if type TYPE should be returned in memory.
Most machines can use the following default definition. */