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    • mbrandy's avatar
      Add support for Embedded Constant Pools for PPC and Arm · eac7f046
      mbrandy authored 
      Embed constant pools within their corresponding Code
objects.

This removes support for out-of-line constant pools in favor
of the new approach -- the main advantage being that it
eliminates the need to allocate and manage separate constant
pool array objects.

Currently supported on PPC and ARM.  Enabled by default on
PPC only.

This yields a 6% improvment in Octane on PPC64.

R=bmeurer@chromium.org, rmcilroy@chromium.org, michael_dawson@ca.ibm.com
BUG=chromium:478811
LOG=Y

Review URL: https://codereview.chromium.org/1162993006

Cr-Commit-Position: refs/heads/master@{#28801}
      eac7f046
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    • jkummerow's avatar
      Revert of Simplify and compact transitions storage (patchset #4 id:80001 of... · 948a973d
      jkummerow authored 
      Revert of Simplify and compact transitions storage (patchset #4 id:80001 of https://codereview.chromium.org/980573002/)

Reason for revert:
x64 test failures

Original issue's description:
> Simplify and compact transitions storage
>
> Simple transitions are now stored in a map's "transitions" field (as a WeakCell wrapping the target map); full TransitionArrays are used when that's not sufficient.
> To encapsulate these storage format implementation details, functions for manipulating and querying transitions have been refactored to be static functions on the TransitionArray class, and take maps as inputs.
>
> Committed: https://crrev.com/45fbef7f2252fce10634931cb103ccc1fc95ae6a
> Cr-Commit-Position: refs/heads/master@{#27029}

TBR=verwaest@chromium.org,ulan@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/982143002

Cr-Commit-Position: refs/heads/master@{#27030}
      948a973d
    • jkummerow's avatar
      Simplify and compact transitions storage · 45fbef7f
      jkummerow authored 
      Simple transitions are now stored in a map's "transitions" field (as a WeakCell wrapping the target map); full TransitionArrays are used when that's not sufficient.
To encapsulate these storage format implementation details, functions for manipulating and querying transitions have been refactored to be static functions on the TransitionArray class, and take maps as inputs.

Review URL: https://codereview.chromium.org/980573002

Cr-Commit-Position: refs/heads/master@{#27029}
      45fbef7f
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