RFR: 8241502: C2: Migrate x86_64.ad to MacroAssembler [v7]

[Vladimir Kozlov]

On Thu, 15 Apr 2021 18:28:02 GMT, John Tortugo <github.com+2249648+JohnTortugo at openjdk.org> wrote:

>> Relates to: https://bugs.openjdk.java.net/browse/JDK-8241502
>> Tested on: Linux tier1, 2 and 3
>> 
>> Can you please take a look whether these changes are going in the direction expected or not? If it is, I'll continue working on the `JDK-8241502` but I'd like to split it in a few PRs since it's a lot of changes.
>
> John Tortugo has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Use cdql/cdqq implemented in MacroAssembler.

Please, fix build failure and run testing on Windows.

Build failed on Windows:

t:\workspace\open\src\hotspot\cpu\x86\assembler_x86.cpp(10877): error C2220: the following warning is treated as an error
t:\workspace\open\src\hotspot\cpu\x86\assembler_x86.cpp(10877): warning C4309: 'argument': truncation of constant value

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Changes requested by kvn (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/2420