Bug 170569 - Linear scan should run liveness only once
Summary: Linear scan should run liveness only once
Status: RESOLVED FIXED
Alias: None
Product: WebKit
Classification: Unclassified
Component: JavaScriptCore (show other bugs)
Version: WebKit Nightly Build
Hardware: All All
: P2 Normal
Assignee: Filip Pizlo
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2017-04-06 15:01 PDT by Filip Pizlo
Modified: 2017-04-06 17:11 PDT (History)
11 users (show)

See Also:

Attachments
it's a start (36.18 KB, patch)
2017-04-06 15:01 PDT, Filip Pizlo 		no flags Details | Formatted Diff | Diff
the patch (42.64 KB, patch)
2017-04-06 16:50 PDT, Filip Pizlo 		keith_miller: review+
Details | Formatted Diff | Diff
Show Obsolete (1) View All Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.
Description Filip Pizlo 2017-04-06 15:01:13 PDT 
Patch forthcoming.
Comment 1 Filip Pizlo 2017-04-06 15:01:50 PDT 
Created attachment 306430 [details]
it's a start
Comment 2 Filip Pizlo 2017-04-06 16:50:27 PDT 
Created attachment 306437 [details]
the patch

another 10% -O1 compile time speed-up
Comment 3 Filip Pizlo 2017-04-06 17:06:57 PDT 
(In reply to Filip Pizlo from comment #2)
> Created attachment 306437 [details]
> the patch
> 
> another 10% -O1 compile time speed-up

Actually, further testing shows that it's only a 6% speed-up.  Still good though.
Comment 4 Keith Miller 2017-04-06 17:09:33 PDT 
Comment on attachment 306437 [details]
the patch

r=me.
Comment 5 Filip Pizlo 2017-04-06 17:11:39 PDT 
Landed in https://trac.webkit.org/changeset/215071/webkit