loop-invariant.c (get_inv_cost): Skip invariants, which are marked as "move", from depends_on.

2014-06-19  Zhenqiang Chen  <zhenqiang.chen@linaro.org>

	* loop-invariant.c (get_inv_cost): Skip invariants, which are marked
	as "move", from depends_on.

From-SVN: r211818

gcc/ChangeLog

+2014-06-19  Zhenqiang Chen  <zhenqiang.chen@linaro.org>
+
+	* loop-invariant.c (get_inv_cost): Skip invariants, which are marked
+	as "move", from depends_on.
+
 2014-06-19  Terry Guo  <terry.guo@arm.com>
 
 	* config/arm/thumb1.md (define_split): Split 64bit constant in earlier

gcc/loop-invariant.c

@@ -1136,6 +1136,10 @@ get_inv_cost (struct invariant *inv, int *comp_cost, unsigned *regs_needed)
 
       dep = invariants[depno];
 
+      /* If DEP is moved out of the loop, it is not a depends_on any more.  */
+      if (dep->move)
+	continue;
+
       get_inv_cost (dep, &acomp_cost, aregs_needed);
 
       if (! flag_ira_loop_pressure)