(STARTING_FRAME_OFFSET): Set to -8.

From-SVN: r3492

gcc/config/sparc/sparc.h

@@ -661,7 +661,7 @@ extern char leaf_reg_backmap[];
    If FRAME_GROWS_DOWNWARD, this is the offset to the END of the
    first local allocated.  Otherwise, it is the offset to the BEGINNING
    of the first local allocated.  */
-#define STARTING_FRAME_OFFSET (-16)
+#define STARTING_FRAME_OFFSET (-8)
 
 /* If we generate an insn to push BYTES bytes,
    this says how many the stack pointer really advances by.