Enable enqueueing of eager inner function compilation onto the compiler
dispatcher. This enables these tasks to be performed in parallel to
compilation of the outer functio (only for Ignition functions).
We currently synchronize to ensure all inner function compilations
 are complete before executing the outer function - future work will
allow outer function execution to happenin parallel to inner function
compilation.

BUG=v8:5203,v8:5215

Review-Url: https://codereview.chromium.org/2611313002
Cr-Commit-Position: refs/heads/master@{#42667}

Revert of [complier] Enable parallel eager inner function compilation with compiler dispatcher. (patchset #11 id:260001 of https://codereview.chromium.org/2611313002/ )

Reason for revert:
Some crashes on mac:
https://build.chromium.org/p/client.v8/builders/V8%20Mac%20-%20debug/builds/11982/steps/Ignition%20-%20turbofan/logs/regress-crbug-429159
https://build.chromium.org/p/client.v8/builders/V8%20Mac%20GC%20Stress/builds/10966

Original issue's description:
> [complier] Enable parallel eager inner function compilation with compiler dispatcher.
>
> Enable enqueueing of eager inner function compilation onto the compiler
> dispatcher. This enables these tasks to be performed in parallel to
> compilation of the outer functio (only for Ignition functions).
> We currently synchronize to ensure all inner function compilations
>  are complete before executing the outer function - future work will
> allow outer function execution to happenin parallel to inner function
> compilation.
>
> BUG=v8:5203,v8:5215
>
> Review-Url: https://codereview.chromium.org/2611313002
> Cr-Commit-Position: refs/heads/master@{#42413}
> Committed: https://chromium.googlesource.com/v8/v8/+/f12661a1ece4e9c9cb8df5c2d349db960356e604

TBR=jochen@chromium.org,marja@chromium.org,mstarzinger@chromium.org,rmcilroy@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:5203,v8:5215

Review-Url: https://codereview.chromium.org/2637123002
Cr-Commit-Position: refs/heads/master@{#42416}

Enable enqueueing of eager inner function compilation onto the compiler
dispatcher. This enables these tasks to be performed in parallel to
compilation of the outer functio (only for Ignition functions).
We currently synchronize to ensure all inner function compilations
 are complete before executing the outer function - future work will
allow outer function execution to happenin parallel to inner function
compilation.

BUG=v8:5203,v8:5215

Review-Url: https://codereview.chromium.org/2611313002
Cr-Commit-Position: refs/heads/master@{#42413}

This flag has been enabled by default for over a month now.

R=mstarzinger@chromium.org, rmcilroy@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/2176143002
Cr-Commit-Position: refs/heads/master@{#38020}

R=mstarzinger@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/2056283002
Cr-Commit-Position: refs/heads/master@{#36895}

Only look at the --ignition-generators flag when determining whether to use
Ignition (in compiler.cc).  In generator runtime functions, instead of looking
at the flag, determine the generator kind based on whether the generator has a
bytecode array.  This allows compiling some generator function using
full-codegen and others using Ignition, e.g when using --ignition-filter.

R=mstarzinger@chromium.org
BUG=chromium:618657,v8:4907

Review-Url: https://codereview.chromium.org/2052873002
Cr-Commit-Position: refs/heads/master@{#36864}