Bug 234587

Summary: Allow loop tier up to the Air tier
Product: WebKit Reporter: Saam Barati <saam>
Component: JavaScriptCoreAssignee: Saam Barati <saam>
Status: RESOLVED FIXED    
Severity: Normal CC: ews-watchlist, justin_michaud, keith_miller, mark.lam, msaboff, tzagallo, webkit-bug-importer, ysuzuki
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
Attachments:
Description Flags
WIP
none
WIP
none
WIP
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WIP
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patch
ysuzuki: review+, ews-feeder: commit-queue-
patch for landing none

Description Saam Barati 2021-12-21 18:31:23 PST 
Probably will be a perf win for first run programs.
Comment 1 Saam Barati 2021-12-21 18:31:43 PST 
If we add a new lightweight Baseline JIT, this probably isn't necessary.
Comment 2 Radar WebKit Bug Importer 2021-12-28 18:32:16 PST 
<rdar://problem/86968638>
Comment 3 Saam Barati 2022-01-04 11:42:11 PST 
Created attachment 448313 [details]
WIP
Comment 4 Saam Barati 2022-01-04 17:53:58 PST 
Created attachment 448356 [details]
WIP

Fixed latent regalloc bug in O0. I think this patch is mostly ready. But I'm going to implement exceptions in Air first, since that'll make some of the tier up logic nicer, and it's a nice to have anyways, since we want all tiers supporting all wasm features.
Comment 5 Saam Barati 2022-01-07 18:38:58 PST 
Created attachment 448657 [details]
WIP
Comment 6 Saam Barati 2022-01-07 19:04:26 PST 
Created attachment 448661 [details]
WIP
Comment 7 Saam Barati 2022-01-07 19:24:35 PST 
Created attachment 448662 [details]
patch
Comment 8 Yusuke Suzuki 2022-01-07 19:43:31 PST 
Comment on attachment 448662 [details]
patch

r=me
Comment 9 Saam Barati 2022-01-10 10:00:02 PST 
Created attachment 448764 [details]
patch for landing
Comment 10 EWS 2022-01-10 17:37:09 PST 
Committed r287864 (245908@main): <https://commits.webkit.org/245908@main>

All reviewed patches have been landed. Closing bug and clearing flags on attachment 448764 [details].