Re: [PATCH v5 0/2] MR8594: Draft: ntdll: Add environment to override cpuid for debugging and test.

[Bernhard Übelacker (＠bernhardu)]

On Fri Jul 18 12:34:47 2025 +0000, Alfred Agrell wrote:
> [On
> MSVC](https://techcommunity.microsoft.com/blog/windowsosplatform/getting-to-know-a...),
> arm64ec defines _M_AMD64 and does not define _M_ARM64.
> I'd guess your compiler does something similar, and you need to
> explicitly look for an arm64ec define.

I found following pre-defined macros. Still strange arm64ec has x86_64 ...
```
$ clang -target arm64ec-windows -dM -E -x c /dev/null | grep -E "__x86_64__|arm.*ec"
#define __arm64ec__ 1
#define __x86_64__ 1
```