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Reland "[wasm] Ship far jump tables"

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This is a reland of 35ca0abdc5.
The last known issue is fixed in https://crrev.com/c/1832178.

Original change's description:
> [wasm] Ship far jump tables
>
> This flips the --wasm-far-jump-table flag. It will allow for more than
> 128MB of code space per wasm module on arm64, and will increase the
> limit on the number of modules per process on x64 (was ~1000 before,
> because we reserved 1GB for the code space per module).
>
> R=mstarzinger@chromium.org
>
> Bug: v8:9477
> Change-Id: I870ec616f4812e38ef1e3fccf0629854a247bb4f
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1815247
> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
> Commit-Queue: Clemens Backes [né Hammacher] <clemensh@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#63967}

Bug: v8:9477
Change-Id: I6d7de80e874e1d51512148fc3c1f45b0fc1474ca
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1840151
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64105}
This commit is contained in:
Clemens Backes 2019-10-04 11:49:46 +02:00 committed by Commit Bot
parent 58761221af
commit e1f3e43b4d
1 changed files with 1 additions and 2 deletions
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3
src/flags/flag-definitions.h
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@ -762,10 +762,9 @@ DEFINE_BOOL(wasm_code_gc, true, "enable garbage collection of wasm code")
DEFINE_BOOL(trace_wasm_code_gc, false, "trace garbage collection of wasm code")
DEFINE_BOOL(stress_wasm_code_gc, false,
"stress test garbage collection of wasm code")
DEFINE_BOOL(wasm_far_jump_table, false,
DEFINE_BOOL(wasm_far_jump_table, true,
"use multiple separate code spaces that might require far jumps "
"between them")
DEFINE_IMPLICATION(future, wasm_far_jump_table)
DEFINE_INT(wasm_max_initial_code_space_reservation, 0,
"maximum size of the initial wasm code space reservation (in MB)")