GeezerVison

Original commit message:

    [turbofan] Boost performance of Array.prototype.shift by 4x.

    For small arrays, it's way faster to just move the elements instead of
    doing the fairly complex and heavy-weight left-trimming. Crankshaft has
    had this optimization for small arrays already; this CL more or less
    ports this functionality to TurboFan, which yields a 4x speed-up when
    using shift on small arrays (with up to 16 elements).

    This should recover some of the regressions reported in the Node.js issues

      #12657

    and discovered for the syncthrough module using

      https://github.com/mcollina/syncthrough/blob/master/benchmarks/basic.js

    as benchmark.

    [email protected]
    BUG=v8:6376

    Review-Url: https://codereview.chromium.org/2874453002
    Cr-Commit-Position: refs/heads/master@{#45216}

PR-URL: #13263
Reviewed-By: Gibson Fahnestock <[email protected]>
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: Franziska Hinkelmann <[email protected]>
Reviewed-By: Myles Borins <[email protected]>

es6/typedarray-construct-offset-not-smi allocates a 2G block of memory
and if there  are multiple variants running at the same time this can
lead to crashes, OOM kills or the OS failing to allocate memory.
This patch limits us to running a single variant of the test.

Refs: #6678

PR-URL: #13263
Reviewed-By: Gibson Fahnestock <[email protected]>
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: Franziska Hinkelmann <[email protected]>
Reviewed-By: Myles Borins <[email protected]>

This is required for ICU 59.1.

PR-URL: #13263
Reviewed-By: Gibson Fahnestock <[email protected]>
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: Franziska Hinkelmann <[email protected]>
Reviewed-By: Myles Borins <[email protected]>

VS2013 does not support defaulting move constructor and assignment
operator. This adds explicit definitions of those methods for two
classes.
This fix is required because we still support building addons with
VS2013 and the incompatibility is in v8.h.

Fixes: nodejs/node-v8#4

PR-URL: #13263
Reviewed-By: Gibson Fahnestock <[email protected]>
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: Franziska Hinkelmann <[email protected]>
Reviewed-By: Myles Borins <[email protected]>

Original commit message:

    [turbofan] Boost performance of Array.prototype.shift by 4x.

    For small arrays, it's way faster to just move the elements instead of
    doing the fairly complex and heavy-weight left-trimming. Crankshaft has
    had this optimization for small arrays already; this CL more or less
    ports this functionality to TurboFan, which yields a 4x speed-up when
    using shift on small arrays (with up to 16 elements).

    This should recover some of the regressions reported in the Node.js issues

      #12657

    and discovered for the syncthrough module using

      https://github.com/mcollina/syncthrough/blob/master/benchmarks/basic.js

    as benchmark.

    [email protected]
    BUG=v8:6376

    Review-Url: https://codereview.chromium.org/2874453002
    Cr-Commit-Position: refs/heads/master@{#45216}

PR-URL: #13263
Reviewed-By: Gibson Fahnestock <[email protected]>
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: Franziska Hinkelmann <[email protected]>
Reviewed-By: Myles Borins <[email protected]>

es6/typedarray-construct-offset-not-smi allocates a 2G block of memory
and if there  are multiple variants running at the same time this can
lead to crashes, OOM kills or the OS failing to allocate memory.
This patch limits us to running a single variant of the test.

Refs: #6678

PR-URL: #13263
Reviewed-By: Gibson Fahnestock <[email protected]>
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: Franziska Hinkelmann <[email protected]>
Reviewed-By: Myles Borins <[email protected]>

es6/typedarray-construct-offset-not-smi allocates a 2G block of memory
and if there  are multiple variants running at the same time this can
lead to crashes, OOM kills or the OS failing to allocate memory.
This patch limits us to running a single variant of the test.

Refs: nodejs/node#6678

PR-URL: nodejs/node#13263
Reviewed-By: Gibson Fahnestock <[email protected]>
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: Franziska Hinkelmann <[email protected]>
Reviewed-By: Myles Borins <[email protected]>

es6/typedarray-construct-offset-not-smi allocates a 2G block of memory
and if there  are multiple variants running at the same time this can
lead to crashes, OOM kills or the OS failing to allocate memory.
This patch limits us to running a single variant of the test.

Refs: nodejs/node#6678

PR-URL: nodejs/node#13263
Reviewed-By: Gibson Fahnestock <[email protected]>
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: Franziska Hinkelmann <[email protected]>
Reviewed-By: Myles Borins <[email protected]>

es6/typedarray-construct-offset-not-smi allocates a 2G block of memory
and if there  are multiple variants running at the same time this can
lead to crashes, OOM kills or the OS failing to allocate memory.
This patch limits us to running a single variant of the test.

Refs: #6678

PR-URL: #13263
Reviewed-By: Gibson Fahnestock <[email protected]>
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: Franziska Hinkelmann <[email protected]>
Reviewed-By: Myles Borins <[email protected]>

This is required for ICU 59.1.

PR-URL: #13263
Reviewed-By: Gibson Fahnestock <[email protected]>
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: Franziska Hinkelmann <[email protected]>
Reviewed-By: Myles Borins <[email protected]>

VS2013 does not support defaulting move constructor and assignment
operator. This adds explicit definitions of those methods for two
classes.
This fix is required because we still support building addons with
VS2013 and the incompatibility is in v8.h.

Fixes: nodejs/node-v8#4

PR-URL: #13263
Reviewed-By: Gibson Fahnestock <[email protected]>
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: Franziska Hinkelmann <[email protected]>
Reviewed-By: Myles Borins <[email protected]>

Original commit message:

    [turbofan] Boost performance of Array.prototype.shift by 4x.

    For small arrays, it's way faster to just move the elements instead of
    doing the fairly complex and heavy-weight left-trimming. Crankshaft has
    had this optimization for small arrays already; this CL more or less
    ports this functionality to TurboFan, which yields a 4x speed-up when
    using shift on small arrays (with up to 16 elements).

    This should recover some of the regressions reported in the Node.js issues

      #12657

    and discovered for the syncthrough module using

      https://github.com/mcollina/syncthrough/blob/master/benchmarks/basic.js

    as benchmark.

    [email protected]
    BUG=v8:6376

    Review-Url: https://codereview.chromium.org/2874453002
    Cr-Commit-Position: refs/heads/master@{#45216}

PR-URL: #13263
Reviewed-By: Gibson Fahnestock <[email protected]>
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: Franziska Hinkelmann <[email protected]>
Reviewed-By: Myles Borins <[email protected]>

es6/typedarray-construct-offset-not-smi allocates a 2G block of memory
and if there  are multiple variants running at the same time this can
lead to crashes, OOM kills or the OS failing to allocate memory.
This patch limits us to running a single variant of the test.

Refs: nodejs/node#6678

PR-URL: nodejs/node#13263
Reviewed-By: Gibson Fahnestock <[email protected]>
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: Franziska Hinkelmann <[email protected]>
Reviewed-By: Myles Borins <[email protected]>

es6/typedarray-construct-offset-not-smi allocates a 2G block of memory
and if there  are multiple variants running at the same time this can
lead to crashes, OOM kills or the OS failing to allocate memory.
This patch limits us to running a single variant of the test.

Refs: nodejs/node#6678

PR-URL: nodejs/node#13263
Reviewed-By: Gibson Fahnestock <[email protected]>
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: Franziska Hinkelmann <[email protected]>
Reviewed-By: Myles Borins <[email protected]>

es6/typedarray-construct-offset-not-smi allocates a 2G block of memory
and if there  are multiple variants running at the same time this can
lead to crashes, OOM kills or the OS failing to allocate memory.
This patch limits us to running a single variant of the test.

Refs: #6678

PR-URL: #13263
Reviewed-By: Gibson Fahnestock <[email protected]>
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: Franziska Hinkelmann <[email protected]>
Reviewed-By: Myles Borins <[email protected]>

VS2013 does not support defaulting move constructor and assignment
operator. This adds explicit definitions of those methods for two
classes.
This fix is required because we still support building addons with
VS2013 and the incompatibility is in v8.h.

Fixes: nodejs/node-v8#4

PR-URL: #13263
Reviewed-By: Gibson Fahnestock <[email protected]>
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: Franziska Hinkelmann <[email protected]>
Reviewed-By: Myles Borins <[email protected]>

es6/typedarray-construct-offset-not-smi allocates a 2G block of memory
and if there  are multiple variants running at the same time this can
lead to crashes, OOM kills or the OS failing to allocate memory.
This patch limits us to running a single variant of the test.

Refs: nodejs/node#6678

PR-URL: nodejs/node#13263
Reviewed-By: Gibson Fahnestock <[email protected]>
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: Franziska Hinkelmann <[email protected]>
Reviewed-By: Myles Borins <[email protected]>