Remove check-bounds=yes in tests

[blegat]

The tests are currently failing in CI. I can reproduce it locally they occur in
https://github.com/JuliaGPU/KernelAbstractions.jl/blob/main/test/localmem.jl
I noticed that the failures disappear if I remove --check-bounds=yes.
You can reproduce the failure as follows

$ julia --project=test --check-bounds=yes # v1.11.4
julia> using KernelAbstractions

julia> @kernel function localmem(A)
           N = @uniform prod(@groupsize())
           @uniform begin
               N2 = prod(@groupsize())
           end
           I = @index(Global, Linear)
           i = @index(Local, Linear)
           lmem = @localmem Int (N,) # Ok iff groupsize is static
           @inbounds begin
               lmem[i] = i
               @synchronize
               A[I] = lmem[N2 - i + 1]
           end
       end
localmem (generic function with 4 methods)

julia> using OpenCL, pocl_jll

julia> kernel! = localmem(OpenCLBackend(), 16)
KernelAbstractions.Kernel{OpenCLBackend, KernelAbstractions.NDIteration.StaticSize{(16,)}, KernelAbstractions.NDIteration.DynamicSize, typeof(gpu_localmem)}(OpenCLBackend(), gpu_localmem)

julia> A = CLArray{Int}(undef, 64);

julia> kernel!(A, ndrange = size(A))

julia> Could not find a dominating alternative variable.
[1]    5267 IOT instruction (core dumped)  julia --color=yes --project=test --check-bounds=yes

The same runs fine without the --check-bounds=yes option.
The error comes from https://github.com/pocl/pocl/blob/66aa142309ecd71d0541f3495dc3ae3f9903b03e/lib/llvmopencl/WorkitemHandler.cc#L264

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 73.45%. Comparing base (8472a71) to head (560228b).

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #297      +/-   ##
==========================================
+ Coverage   72.96%   73.45%   +0.48%     
==========================================
  Files          12       12              
  Lines         614      614              
==========================================
+ Hits          448      451       +3     
+ Misses        166      163       -3     

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[maleadt]

I'm fine doing this temporarily, but we should also open an issue, and if possible only apply this hack to those Julia versions that require it. Also, not all back-ends require this hack (only PoCL), so it may be better to add an option to the test runner, set the Pkg flag based on that, so that the Buildkite pipeline can selectively disable bounds checking only for PoCL and only on the Julia versions that need it.

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diff --git a/test/runtests.jl b/test/runtests.jl
index 32eb6dc..816a47b 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -30,13 +30,13 @@ if do_help
     println("""
         Usage: runtests.jl [--help] [--list] [--jobs=N] [TESTS...]
 
-                       --help                        Show this text.
-                       --list                        List all available tests.
-                       --verbose                     Print more information during testing.
-                       --quickfail                   Fail the entire run as soon as a single test errored.
-                       --jobs=N                      Launch `N` processes to perform tests (default: Sys.CPU_THREADS).
-                       --platform=NAME               Run tests on the platform named `NAME` (default: all platforms).
-                       --check-bounds={yes*|no|auto} Julia is launched with this argument
+                               --help                        Show this text.
+                               --list                        List all available tests.
+                               --verbose                     Print more information during testing.
+                               --quickfail                   Fail the entire run as soon as a single test errored.
+                               --jobs=N                      Launch `N` processes to perform tests (default: Sys.CPU_THREADS).
+                               --platform=NAME               Run tests on the platform named `NAME` (default: all platforms).
+                               --check-bounds={yes*|no|auto} Julia is launched with this argument
 
                Remaining arguments filter the tests that will be executed.""")
     exit(0)

[blegat]

I have done so. Note that I needed --check-bounds=auto, as just removing --check-bounds=yes was not enough apparently, it seems that it was not defaulting to auto for some reason

[maleadt]

Thanks for working on this. At the same time, I did have some time to work on OpenCL.jl/PoCL, so I reduced a handful of the remaining issues we're seeing on CI: pocl/pocl#1871 and pocl/pocl#1872. If you don't mind, I'd rather wait a bit to see if this could get quickly fixed upstream rather than disabling the tests here.