re PR rtl-optimization/13375 (ICE in gcse.c)

PR optimization/13375
* gcse.c (handle_avail_expr): Just return if the source is not a
single set.

From-SVN: r75932

gcc/ChangeLog

 2004-01-15  Richard Earnshaw  <rearnsha@arm.com>
+
+	PR optimization/13375
+	* gcse.c (handle_avail_expr): Just return if the source is not a
+	single set.
+
+2004-01-15  Richard Earnshaw  <rearnsha@arm.com>
 	    Daniel Jacobowitz  <drow@mvista.com>
 
 	* arm/lib1funcs.asm (ARM_FUNC_START): Correct interworking case.

gcc/gcse.c

@@ -3381,8 +3381,11 @@ handle_avail_expr (rtx insn, struct expr *expr)
   if (insn_computes_expr == NULL)
     return 0;
   expr_set = single_set (insn_computes_expr);
+  /* The set might be in a parallel with multiple sets; we could
+     probably handle that, but there's currently no easy way to find
+     the relevant sub-expression.  */
   if (!expr_set)
-    abort ();
+    return 0;
 
   found_setting = 0;
   use_src = 0;