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    • zhengxing.li's avatar
      X87: Re-reland: Remove register index/code indirection. · 2e5845f1
      zhengxing.li authored 
          port 5cf1c0bc (r31087).

    original commit message:
    Previous to this patch, both the lithium and TurboFan register
    allocators tracked allocated registers by "indices", rather than
    the register codes used elsewhere in the runtime. This patch
    ensures that codes are used everywhere, and in the process cleans
    up a bunch of redundant code and adds more structure to how the
    set of allocatable registers is defined.

    Some highlights of changes:

    * TurboFan's RegisterConfiguration class moved to V8's top level
      so that it can be shared with Crankshaft.
    * Various "ToAllocationIndex" and related methods removed.
    * Code that can be easily shared between Register classes on
      different platforms is now shared.
    * The list of allocatable registers on each platform is declared
      as a list rather than implicitly via the register index <->
      code mapping.

    additional comment:
    This patch must be work with CL https://codereview.chromium.org/1405673003/
    and CL https://codereview.chromium.org/1413343002/
    which provide the needed register allocation common code change in
    v8 for this CL

BUG=

Review URL: https://codereview.chromium.org/1410393004

Cr-Commit-Position: refs/heads/master@{#31494}
      2e5845f1
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    • svenpanne@chromium.org's avatar
      CodeStubs contain their corresponding Isolate* now. (part 1) · dd30db90
      svenpanne@chromium.org authored 
      This is a purely mechanical change, adding an Isolate* to the CodeStub
constructor and a corresponding field plus a getter. A few methods in
CodeStub and its subclasses can be simplified now, but this is done in
a separate CL.

The underlying reason apart from simplicity is that deep down in the
call chain we need to detect if the serializer is active or not. This
information will be part of the Isolate, not a global variable with
funky synchronization primitives around it (which is fundamentally
wrong and the underlying cause for race conditions and a catch-22
during initialization).

BUG=359977
LOG=y
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/246643014

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20919 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
      dd30db90
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