RFR: 8253757: Add LLVM-based backend for hsdis

Wed Sep 30 00:58:43 UTC 2020

On Tue, 29 Sep 2020 04:36:16 GMT, Ludovic Henry <luhenry at openjdk.org> wrote:

> When bringing up Hotspot onto new platforms, it is not always possible to compile hsdis because gcc is not yet
> available. For example, for Windows-AArch64 and macOS-AArch64.
> For some such platforms, it is possible to use LLVM as an alternative backend as it also supports a disassembler
> feature.

@navyxliu I've merged the sources into `src/utils/hsdis` and added support to build it in the Makefile.

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PR: https://git.openjdk.java.net/jdk/pull/392