|
From: | Avi Kivity |
Subject: | Re: [Qemu-devel] Re: [PATCH 08/11] QMP: Port balloon command |
Date: | Sun, 28 Jun 2009 21:36:00 +0300 |
User-agent: | Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1b3pre) Gecko/20090513 Fedora/3.0-2.3.beta2.fc11 Thunderbird/3.0b2 |
On 06/28/2009 08:51 PM, Blue Swirl wrote:
On 6/28/09, Filip Navara<address@hidden> wrote:On Sun, Jun 28, 2009 at 5:52 PM, Avi Kivity<address@hidden> wrote: > It really isn't very complicated, and > the thread only got so long because the topic is relatively simple. Post an > RFC and a mile-long patchset about changing TCG to SSA form, and see how you > get no replies. I wouldn't even dare to push the SSA patch... Mile-long doesn't describe it precisely enough. Imagine it was applied to all the targets.Is there a speed benefit from using the SSA form?
I'm no compiler expert. My understanding is that SSA enables optimizations, so translation speed would decrease, but generated code speed would increase.
Other jits increase optimization effort on long running loops, so if a code is run heavily it receives additional attention from the optimizer.
-- I have a truly marvellous patch that fixes the bug which this signature is too narrow to contain.
[Prev in Thread] | Current Thread | [Next in Thread] |