Supported HW architectures:
ia32, x64, arm, arm64, ppc64, s390, mips, mips64

Compiler support:
- clang/gcc: all
- msvc tools: ia32, x64, arm64

Thanks all for porting!

Bug: chromium:1056170
Change-Id: I26ea7d727dc6d90929941668b8f115bdbaf226ab
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2153210
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Anton Bikineev <bikineev@chromium.org>
Reviewed-by: Omer Katz <omerkatz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67203}