`llvmcall` requires the compiler

[chrstphrbrns]

I'm recently seeing this error when using TiffImages.jl (dev branch) with multi-threading enabled

julia> VERSION
v"1.12.0-DEV.149"

julia> using TiffImages

julia> @time TiffImages.load("image.tif");
...
    nested task error: `llvmcall` requires the compiler
    Stacktrace:
     [1] macro expansion
       @ ~/.julia/packages/SIMD/2fAdM/src/LLVM_intrinsics.jl:673 [inlined]
     [2] shufflevector(x::NTuple{…}, ::Val{…})
       @ SIMD.Intrinsics ~/.julia/packages/SIMD/2fAdM/src/LLVM_intrinsics.jl:664
...

julia> @time TiffImages.load("image.tif");
  0.283151 seconds (164.76 k allocations: 282.782 MiB, 17.25% gc time, 38.50% compilation time)

Sometimes it works on the first try, but it always works on the second try

I don't get this with v1.10.2

[PallHaraldsson]

I tried to debug. The package is pure Julia, and the problem not strictly there, but seemingly in this less pure dependency (or at least it triggering a bug in Julia?):

https://github.com/search?q=repo%3Aeschnett%2FSIMD.jl+llvmcall&type=code

Maybe until fixed you can use some workaround (older Julia or) e.g. non-pure code package:
JuliaIO/ImageMagick.jl#99

There's even very old pure Julia code (not registered, as not a package even):
https://github.com/rephorm/TIFF.jl

[vtjnash]

Likely one of several known regressions tracked here #53498

[chrstphrbrns]

Another error with the same symptom (fails on the first attempt when multi-threading is enabled; succeeds on subsequent attempts)

recode is a generated function that also uses SIMD

   nested task error: LoadError: UndefRefError: access to undefined reference
    Stacktrace:
      [1] getindex
        @ ./essentials.jl:375 [inlined]
      [2] ht_keyindex
        @ ./dict.jl:248 [inlined]
      [3] haskey
        @ ./dict.jl:548 [inlined]
      [4] in(x::Symbol, s::Set{Symbol})
        @ Base ./set.jl:92
      [5] log_record_id(_module::Any, level::Any, message::Any, log_kws::Any)
        @ Base.CoreLogging ./logging.jl:302
      [6] process_logmsg_exs(::Any, ::Any, ::Any, ::Any, ::Any)
        @ Base.CoreLogging ./logging.jl:461
      [7] logmsg_code(::Any, ::Any, ::Any, ::Any, ::Any)
        @ Base.CoreLogging ./logging.jl:348
      [8] var"@debug"(__source__::LineNumberNode, __module__::Module, exs::Vararg{Any})
        @ Base.CoreLogging ./logging.jl:520
      [9] recode(v::AbstractVector, r::Any, c::Any, n::Val{N}) where N
        @ TiffImages ~/.julia/dev/TiffImages/src/ifds.jl:560

[vtjnash]

Using logging is not permitted currently when threads are enabled due to data races in the current implementation