This is a reland of 33fa357b

TBR=mvstanton@chromium.org

Original change's description:
> Do not use FixedDoubleArray to store RNG state
>
> Also:
>  - replace runtime call with cheaper C call
>  - change state to double conversion
>
> R=mvstanton@chromium.org
>
> Bug: v8:8212
> Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng
> Change-Id: If4bfe0f5fb1864c89f4acd871cb8b74c7cd7ab09
> Reviewed-on: https://chromium-review.googlesource.com/1240116
> Commit-Queue: Yang Guo <yangguo@chromium.org>
> Reviewed-by: Michael Stanton <mvstanton@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#56165}

Bug: v8:8212
Change-Id: Iccc9128034ce7b65801a04a54982219b5a4fe84e
Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng
Reviewed-on: https://chromium-review.googlesource.com/1238551Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56175}

This reverts commit 33fa357b.

Reason for revert: Breaking the V8 Linux - arm64 - sim - MSAN bot. Please see here:
https://ci.chromium.org/p/v8/builders/luci.v8.ci/V8%20Linux%20-%20arm64%20-%20sim%20-%20MSAN/23001

Original change's description:
> Do not use FixedDoubleArray to store RNG state
> 
> Also:
>  - replace runtime call with cheaper C call
>  - use xor instead of addition to remove bias
> 
> R=​mvstanton@chromium.org
> 
> Bug: v8:8212
> Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng
> Change-Id: If4bfe0f5fb1864c89f4acd871cb8b74c7cd7ab09
> Reviewed-on: https://chromium-review.googlesource.com/1240116
> Commit-Queue: Yang Guo <yangguo@chromium.org>
> Reviewed-by: Michael Stanton <mvstanton@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#56165}

TBR=yangguo@chromium.org,mvstanton@chromium.org

Change-Id: I05f23f0b52a706233bbc1a1877cc15691ed9f40a
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:8212
Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng
Reviewed-on: https://chromium-review.googlesource.com/1238549Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56167}

Also:
 - replace runtime call with cheaper C call
 - use xor instead of addition to remove bias

R=mvstanton@chromium.org

Bug: v8:8212
Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng
Change-Id: If4bfe0f5fb1864c89f4acd871cb8b74c7cd7ab09
Reviewed-on: https://chromium-review.googlesource.com/1240116
Commit-Queue: Yang Guo <yangguo@chromium.org>
Reviewed-by: Michael Stanton <mvstanton@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56165}