The AsmType class uses a design similar to the old Object* model, where
arbitrary values (including 0) are reinterpret_cast to pointers. This
yields the following UBSan error, among others:

    src/asmjs/asm-parser.cc:2000:51: runtime error: member call on null
    pointer of type 'v8::internal::wasm::AsmType'

This patch does the smallest possible fix by turning the affected methods
into static functions. Longer-term, we should consider switching the
overall class design to a "struct wrapping an Address" model like the new
Object definition, which is a bit non-trivial because some AsmType types
are ZoneObject subclasses.

Bug: v8:3770
Change-Id: Ie2a7cdc9eab32c4c469d699212c84b0419480b4f
Reviewed-on: https://chromium-review.googlesource.com/c/1397663Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58586}

This CL fixes all occurences that don't require special OWNER reviews,
or can be reviewed by Michi.

After this one, we should be able to reenable the readability/check
cpplint check.

R=mstarzinger@chromium.org

Bug: v8:6837, v8:6921
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng;master.tryserver.v8:v8_linux_noi18n_rel_ng
Change-Id: Ic81d68d5534eaa795b7197fed5c41ed158361d62
Reviewed-on: https://chromium-review.googlesource.com/721120
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48670}

R=clemensh@chromium.org

Change-Id: I5bdb91d2e82105bb301c2b97abfb1b074b710a64
Reviewed-on: https://chromium-review.googlesource.com/632680Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47597}

This makes sure that only the "asm-js.h" header is exposed to outside
the directory holding the asm.js validator. It ensures that internals
don't leak out of that component, unless they are explicitly exposed
through the defined interface.

R=clemensh@chromium.org
BUG=v8:6127

Change-Id: I7c41782254cfce102af8edf4356205cfca904e60
Reviewed-on: https://chromium-review.googlesource.com/496147Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45125}

BUG=v8:5614

Review-Url: https://codereview.chromium.org/2492793005
Cr-Commit-Position: refs/heads/master@{#40914}

R=machenbach@chromium.org,titzer@chromium.org,bmeurer@chromium.org,jgruber@chromium.org
BUG=
CQ_INCLUDE_TRYBOTS=master.tryserver.v8:v8_win_dbg,v8_mac_dbg;master.tryserver.chromium.android:android_arm64_dbg_recipe

Review-Url: https://codereview.chromium.org/2416243002
Cr-Commit-Position: refs/heads/master@{#40350}

This is some initial cleanup to keep /src clean. The
AccountingAllocator is actually exclusively used by zones and this
common subfolder makes that more clear.

BUG=v8:5409

Review-Url: https://codereview.chromium.org/2344143003
Cr-Commit-Position: refs/heads/master@{#39558}

BUG= https://bugs.chromium.org/p/v8/issues/detail?id=4203
TEST= cctest/asmjs/test-asm-typer
LOG=N

Review-Url: https://codereview.chromium.org/2148073002
Cr-Commit-Position: refs/heads/master@{#37731}

BUG= https://bugs.chromium.org/p/v8/issues/detail?id=4203
TEST=mjsunit/wasm/*
LOG=N

Review-Url: https://codereview.chromium.org/2134333003
Cr-Commit-Position: refs/heads/master@{#37729}

This is a rewrite of the ASM validator. This one follows the spec instead of using the AST visitors.

BUG= https://bugs.chromium.org/p/v8/issues/detail?id=4203
TEST=cctest/asmjs/test-asm-typer
TEST=cctest/asmjs/test-typing-asm
LOG=N

Review-Url: https://codereview.chromium.org/2071343003
Cr-Commit-Position: refs/heads/master@{#37694}

Directs 'use asm' traffic through asm-wasm conversion when --validate-asm is passed.

Adds a builtin that handles the fallback to JS.

BUG= https://bugs.chromium.org/p/v8/issues/detail?id=4203
TEST=asm-wasm
R=mstarzinger@chromium.org,titzer@chromium.org
LOG=N

Review-Url: https://codereview.chromium.org/2057403003
Cr-Commit-Position: refs/heads/master@{#37470}

BUG=

Review-Url: https://codereview.chromium.org/2078053002
Cr-Commit-Position: refs/heads/master@{#37110}

The modifications were necessary to properly represent asm types:

1) fround is no longer an overloaded function.

2) the constructor for MinMaxTypes now takes a return type.

3) Adds pseudo-types for representing the Load/Store types for fp heap views.
BUG=

Review-Url: https://codereview.chromium.org/2069443002
Cr-Commit-Position: refs/heads/master@{#36980}

This CL introduces the new type system for the ASM
type-checker/validator.

BUG=

Review-Url: https://codereview.chromium.org/2045703007
Cr-Commit-Position: refs/heads/master@{#36942}