Re: [PATCH GCC][v2]Simplify alias check code generation in vectorizer

[Bernd Edlinger]

Hi,

>@@ -2310,7 +2313,8 @@ create_intersect_range_checks_index (loop_vec_info 
>loop_vinfo, tree *cond_expr,
>   gcc_assert (TREE_CODE (DR_STEP (dr_a.dr)) == INTEGER_CST);
> 
>   bool neg_step = tree_int_cst_compare (DR_STEP (dr_a.dr), size_zero_node) < 
> 0;
>-  unsigned HOST_WIDE_INT abs_step = tree_to_uhwi (DR_STEP (dr_a.dr));
>+  unsigned HOST_WIDE_INT abs_step =
>+    absu_hwi (tree_to_shwi (DR_STEP (dr_a.dr)));
>   if (neg_step)
>     abs_step = -abs_step;

Hmmm...

but you must remove the neg_step if you do this.

Right?


Bernd.