Bug 184672

Summary: PutStackSinkingPhase should know that KillStack means ConflictingFlush
Product: WebKit Reporter: Filip Pizlo <fpizlo>
Component: JavaScriptCoreAssignee: Filip Pizlo <fpizlo>
Status: RESOLVED FIXED    
Severity: Normal CC: ews-watchlist, keith_miller, mark.lam, msaboff, saam, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: All   
OS: All   
Attachments:
Description Flags
possible patch
none
the patch
none
the patch msaboff: review+

Description Filip Pizlo 2018-04-16 16:10:13 PDT
Patch forthcoming.
Comment 1 Filip Pizlo 2018-04-16 17:16:55 PDT
Created attachment 338062 [details]
possible patch
Comment 2 Filip Pizlo 2018-04-16 18:54:58 PDT
Created attachment 338068 [details]
the patch
Comment 3 Filip Pizlo 2018-04-17 12:37:11 PDT
Created attachment 338143 [details]
the patch

Decided to be even more conservative and change clobberize for KillStack.

This is all perf neutral so it's probably worth it for the correctness.
Comment 4 Michael Saboff 2018-04-17 12:46:42 PDT
Comment on attachment 338143 [details]
the patch

View in context: https://bugs.webkit.org/attachment.cgi?id=338143&action=review

r=me

> Source/JavaScriptCore/ChangeLog:20
> +        KillStack along one path frough the CFG. Also, the definition of DeadFlush and ConflictingFlush in the comment

Spelling *frough*
Comment 5 Filip Pizlo 2018-04-17 12:53:59 PDT
Landed in https://trac.webkit.org/changeset/230725/webkit
Comment 6 Radar WebKit Bug Importer 2018-04-17 12:54:17 PDT
<rdar://problem/39500467>