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  1. 17 Dec, 2018 1 commit
  3. 11 Dec, 2018 1 commit
    • Ross McIlroy's avatar
      [SFI] Add support for flushing old Bytecode from SharedFunctionInfos. · a55803a1
      Ross McIlroy authored 
      This change makes the SFI to bytecode link pseudo-weak. The marking visitors
check whether the bytecode is old, and if so, don't mark it and instead
push the SFI onto a bytecode_flushing_candidates worklist. Once marking
is complete, this list is walked, and for any of the candidates who's bytecode
has not been marked (i.e., is only referenced by the shared function info),
the bytecode is flushed and the SFI has the function data replaced with
an UncompiledData (which overwrites the flushed bytecode array).

Since we don't track JSFunctions, these can still think the underlying
function is compiled, and so calling them will invoke
InterpreterEntryTrampoline. As such, logic is added to
InterpreterEntryTrampoline to detect flushed functions, and enter
CompileLazy instead.

BUG=v8:8395

Change-Id: I4afba79f814ca9a92dec45d59485935845a6669d
Reviewed-on: https://chromium-review.googlesource.com/c/1348433
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: 's avatarUlan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58158}
      a55803a1
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    • Dominik Inführ's avatar
      Reland "Reland "[heap] Visit individual ephemerons instead of collections"" · 5cb08217
      Dominik Inführ authored 
      This is a reland of 91f113e2

Original change's description:
> Reland "[heap] Visit individual ephemerons instead of collections"
> 
> This is a reland of 9aba0159
> 
> Original change's description:
> > [heap] Visit individual ephemerons instead of collections
> > 
> > When marking ephemerons visit individual ephemerons with key and value
> > unreachable instead of simply iterating all ephemerons in all weak
> > collections. Also visit ephemerons at end of concurrent marking to do
> > work we would otherwise need to do in the atomic pause.
> > 
> > Bug: chromium:844008
> > Change-Id: I3400ad1f81c0cdc0fe6506a1f1146a6743a7fcd7
> > Reviewed-on: https://chromium-review.googlesource.com/1113934
> > Commit-Queue: Dominik Inführ <dinfuehr@google.com>
> > Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#54039}
> 
> Bug: chromium:844008
> Change-Id: I4c44e74c7cf5fe380ffa4ce9f106bebb57bc023d
> Reviewed-on: https://chromium-review.googlesource.com/1116438
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Commit-Queue: Dominik Inführ <dinfuehr@google.com>
> Cr-Commit-Position: refs/heads/master@{#54046}

Bug: chromium:844008
Change-Id: Ie9d606c51aacdfa9ffe77fe4cf780e30dd445d52
Reviewed-on: https://chromium-review.googlesource.com/1116639Reviewed-by: 's avatarUlan Degenbaev <ulan@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@google.com>
Cr-Commit-Position: refs/heads/master@{#54053}
      5cb08217