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58223
2017 Dec 19
2
A code layout related side-effect introduced by rL318299
On Mon, Dec 18, 2017 at 5:46 PM Xinliang David Li <davidxl at google.com>
wrote:
> The introduction of cleanup.cond block in b.ll without loop-rotation
> already makes the layout worse than a.ll.
>
>
> Without introducing cleanup.cond block, the layout out is
>
> entry->while.cond -> while.body->ret
>
> All the arrows are hot fall through edges which is