cse.c (FIXED_BASE_PLUS_P): Do not consider referneces to arg_pointer_rtx fixed if...

        * cse.c (FIXED_BASE_PLUS_P): Do not consider referneces to
        arg_pointer_rtx fixed if the argument pointer register is
        not fixed.
        (NONZERO_BASE_PLUS_P): Likewise.

From-SVN: r29425

gcc/ChangeLog

+Tue Sep 14 21:47:06 1999  Jeffrey A Law  (law@cygnus.com)
+
+	* cse.c (FIXED_BASE_PLUS_P): Do not consider referneces to
+	arg_pointer_rtx fixed if the argument pointer register is
+	not fixed.
+	(NONZERO_BASE_PLUS_P): Likewise.
+
 Tue Sep 14 20:26:02 1999  Richard Henderson  <rth@cygnus.com>
 
 	* rtl.def (match_insn, match_insn2): Remove match_insn; rename

gcc/cse.c

@@ -596,13 +596,14 @@ struct cse_basic_block_data {
 
 #define FIXED_BASE_PLUS_P(X)					\
   ((X) == frame_pointer_rtx || (X) == hard_frame_pointer_rtx	\
-   || (X) == arg_pointer_rtx					\
+   || ((X) == arg_pointer_rtx && fixed_regs[ARG_POINTER_REGNUM])\
    || (X) == virtual_stack_vars_rtx				\
    || (X) == virtual_incoming_args_rtx				\
    || (GET_CODE (X) == PLUS && GET_CODE (XEXP (X, 1)) == CONST_INT \
        && (XEXP (X, 0) == frame_pointer_rtx			\
 	   || XEXP (X, 0) == hard_frame_pointer_rtx		\
-	   || XEXP (X, 0) == arg_pointer_rtx			\
+	   || ((X) == arg_pointer_rtx				\
+	       && fixed_regs[ARG_POINTER_REGNUM])		\
 	   || XEXP (X, 0) == virtual_stack_vars_rtx		\
 	   || XEXP (X, 0) == virtual_incoming_args_rtx))	\
    || GET_CODE (X) == ADDRESSOF)
@@ -620,7 +621,8 @@ struct cse_basic_block_data {
    || (GET_CODE (X) == PLUS && GET_CODE (XEXP (X, 1)) == CONST_INT \
        && (XEXP (X, 0) == frame_pointer_rtx			\
 	   || XEXP (X, 0) == hard_frame_pointer_rtx		\
-	   || XEXP (X, 0) == arg_pointer_rtx			\
+	   || ((X) == arg_pointer_rtx				\
+	       && fixed_regs[ARG_POINTER_REGNUM])		\
 	   || XEXP (X, 0) == virtual_stack_vars_rtx		\
 	   || XEXP (X, 0) == virtual_incoming_args_rtx))	\
    || (X) == stack_pointer_rtx					\