M1 Mac runtimecheck Errors

[miguelmartin75]

With the following code:

import nimsimd/runtimecheck

let
  cpuHasAvx* = checkInstructionSets({AVX})
  cpuHasAvx2* = checkInstructionSets({AVX, AVX2})

This fails to compile:

/Users/miguelmartin/.cache/nim/nimsimd_test_d/@m..@s..@s..@[email protected]@[email protected]@[email protected]:130:10: error: invalid output constraint '=a' in asm
        :"=a"(eaxr), "=b"(ebxr), "=c"(ecxr), "=d"(edxr)
         ^
1 error generated.
Error: execution of an external compiler program 'clang -c  -w -ferror-limit=3 -pthread   -I/Users/miguelmartin/.choosenim/toolchains/nim-2.0.0/lib -I/Users/miguelmartin/repos/nim_playground/nimsimd_test/src -o /Users/miguelmartin/.cache/nim/nimsimd_test_d/@m..@s..@s..@[email protected]@[email protected]@[email protected] /Users/miguelmartin/.cache/nim/nimsimd_test_d/@m..@s..@s..@[email protected]@[email protected]@[email protected]' failed with exit code: 1

System Details:

• OS: MacOS 13.5
• CPU: M1 Max
• RAM: 64GB

Compiler version: 2.0

[guzba]

I have confirmed this works as expected on my M1 using nim c -r examples/runtimecheck.nim added #13

What is your compile command?

[guzba]

Ah, I'm guessing you are compiling as arm64. It is only possible to runtime check amd64 instruction sets. You'll need a when defined(amd64): block.

Edit: looks like I have that at the top of runtimecheck.nim to prevent this. Lets see what the compile command is.

[miguelmartin75]

It seems related to choosenim not providing an arm64 build (dom96/choosenim#318). I'll install the compiler myself.

[guzba]

Ah, interesting. Lets see if anything changes with a fresh compiler build. Fortunately Nim makes that relatively straightforward imo.

[miguelmartin75]

Compiling & installing the nim compiler worked to resolve this (I can now use pixie!). Apologies for the noise.

[guzba]

All good, glad that fixed things and hopefully choosenim stuff will be sorted out soon too.