Patch to fix SPARC current_function_uses_only_leaf_regs breakage

[John Wehle]

This patch addresses several new failures reported by Kaveh which
are a result of my recent leaf_function changes.  The problem is
that current_function_uses_only_leaf_regs isn't always being set
correctly.

ChangeLog:

Wed Apr 21 18:09:47 EDT 1999  John Wehle  (john@feith.com)

	* toplev.c (rest_of_compilation): Always set
	current_function_uses_only_leaf_regs appropriately.

Enjoy!

-- John Wehle
------------------8<------------------------8<------------------------
*** toplev.c.ORIGINAL	Sat Apr 17 19:09:02 1999
--- toplev.c	Wed Apr 21 17:56:43 1999
*************** rest_of_compilation (decl)
*** 4240,4247 ****
      }
  
  #ifdef LEAF_REGISTERS
!   if (optimize > 0 && only_leaf_regs_used () && leaf_function_p ())
!     current_function_uses_only_leaf_regs = 1;
  #endif
  
    /* One more attempt to remove jumps to .+1
--- 4240,4247 ----
      }
  
  #ifdef LEAF_REGISTERS
!   current_function_uses_only_leaf_regs
!     = optimize > 0 && only_leaf_regs_used () && leaf_function_p ();
  #endif
  
    /* One more attempt to remove jumps to .+1
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