Commits on May 16, 2019

1. deps: V8: cherry-pick cca9ae3c9a …

   Original commit message:
   
       Remove recursion from NeedsCheckHeapObject.
   
       We use the predicate NeedsCheckHeapObject in the compiler frontend to
       determine whether we can skip introducing CheckHeapObject nodes. But
       this predicate would also walk up the graph in case of Phis, which can
       result in really long compilation times (on the main thread). In the
       report in nodejs#27667, the compiler
       frontend alone took around 4-5mins of main thread time for a single
       function. With this patch the time goes down to 4-5ms.
   
       Bug: v8:9250
       Refs: nodejs#27667
       Change-Id: I231eb780ff04f949fa1669714f9af6ebfbcade05
       Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1612897
       Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
       Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
       Cr-Commit-Position: refs/heads/master@{#61503}
   
   Fixes: nodejs#27667

   

   bmeurer authored and bnoordhuis committed May 16, 2019
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