Dear all,
I found that running V8 from a command line [e.g. using "shell"] seems to
require that CrankShaft be enabled in order for TurboFan to work.
The following examples are taken from an ia32 build running on 64-bit Ubuntu
14.04.3 LTS running on a recent-but-not-latest-generation Intel Xeon. I
used the "benchmarks" directory included in V8 itself [yes, I _do_ know
about "Octane"].
At the very least, if the below is not {fixable w/o major code rewriting}
until CrankShaft is finally removed along with its options, then I suggest
that the documentation -- especially the "--help" stuff -- be updated to
reflect the fact that TurboFan depends on the CrankShaft _option_ being
enabled, even if they are technically non-overlapping sub-codebases WRT each
other.
Regards,
Abe
[prompt] [... rest of path...]out/ia32.release/shell run.js --ignition
--nocrankshaft --noturbo --noturbo_shipping
Richards: 1232
DeltaBlue: 1625
Crypto: 2428
RayTrace: 2804
EarleyBoyer: 8467
RegExp: 3013
Splay: 2376
NavierStokes: 2177
----
Score (version 7): 2552
[prompt] [... rest of path...]out/ia32.release/shell run.js --turbo_shipping
--turbo
Richards: 25139
DeltaBlue: 42864
Crypto: 20656
RayTrace: 50911
EarleyBoyer: 38899
RegExp: 4317
Splay: 15320
NavierStokes: 23596
----
Score (version 7): 22630
[prompt] [... rest of path...]out/ia32.release/shell run.js --nocrankshaft
--turbo_shipping --turbo
Richards: 1204
DeltaBlue: 1366
Crypto: 2418
RayTrace: 2827
EarleyBoyer: 8369
RegExp: 2942
Splay: 2265
NavierStokes: 2192
----
Score (version 7): 2467
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