2010/1/6 Jeff Law :
> Please file a bug report with a complete testcase so that we can see what's
> happening rather than trying to speculate.
>
> jeff
>
Uh, seems this problem doesn't occur on trunk. Because before
pass_dominator, pass_complete_unrolli is able to unroll the following
test case.
On 01/05/10 01:46, Eric Fisher wrote:
Hi,
I found that sometimes -fno-tree-dominator-opts will bring a big speed
promotion. This is because that pass_dominator tries to thread jumps.
But sometimes this will cause that the loop's exit bb does not
dominator its latch bb again. Then pass_complete_u
On Tue, Jan 5, 2010 at 9:46 AM, Eric Fisher wrote:
> Hi,
>
> I found that sometimes -fno-tree-dominator-opts will bring a big speed
> promotion. This is because that pass_dominator tries to thread jumps.
> But sometimes this will cause that the loop's exit bb does not
> dominator its latch bb agai
Hi,
I found that sometimes -fno-tree-dominator-opts will bring a big speed
promotion. This is because that pass_dominator tries to thread jumps.
But sometimes this will cause that the loop's exit bb does not
dominator its latch bb again. Then pass_complete_unroll is unable to
know the exact number
