RFR: 8293285: x86_64: Move libm stub implementations to StubGenerator

Fri Sep 2 15:38:46 UTC 2022

On Fri, 2 Sep 2022 00:10:13 GMT, Vladimir Ivanov <vlivanov at openjdk.org> wrote:

> Move libm stub implementations (used for trigonometric math intrinsics) from MacroAssembler to StubGenerator.
> 
> x86_32-specific code is left intact, but all `macroAssembler_x86_*.cpp` files are renamed to `macroAssembler_x86_32_*.cpp` since there's no x86_64-specific code left there anymore.
> 
> Testing: hs-tier1 - hs-tier4

Good.

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Marked as reviewed by kvn (Reviewer).

PR: https://git.openjdk.org/jdk/pull/10133