reload1.c (reload_cse_regno_equal_p): If -ffloat-store, don't consider a MEM in FP mode as equal.

        * reload1.c (reload_cse_regno_equal_p): If -ffloat-store, don't
        consider a MEM in FP mode as equal.
Stolen from gcc2 sources.  Fixes problem from Debian folks.

From-SVN: r20571

gcc/ChangeLog

+Fri Jun 19 02:00:19 1998  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>
+
+	* reload1.c (reload_cse_regno_equal_p): If -ffloat-store, don't
+	consider a MEM in FP mode as equal.
+
 Fri Jun 19 01:02:17 1998  Jeffrey A Law  (law@cygnus.com)
 
 	* c-decl.c (duplicate_decls): Avoid setting TREE_ASM_WRITTEN for

gcc/reload1.c

@@ -8352,6 +8352,8 @@ reload_cse_regno_equal_p (regno, val, mode)
   for (x = reg_values[regno]; x; x = XEXP (x, 1))
     if (XEXP (x, 0) != 0
 	&& rtx_equal_p (XEXP (x, 0), val)
+	&& (! flag_float_store || GET_CODE (XEXP (x, 0)) != MEM
+	    || GET_MODE_CLASS (GET_MODE (x)) != MODE_FLOAT)
 	&& (GET_CODE (val) != CONST_INT
 	    || mode == GET_MODE (x)
 	    || (GET_MODE_SIZE (mode) < GET_MODE_SIZE (GET_MODE (x))