fill broken after KA integration

[christiangnrd]

I don't know why it only shows up in the API validation tests as this test is broken on in regular tests for me.
Edit: --check-bounds=yes seems to hide the errors.

@testset "fill" begin
@testset "fill($T)" for T in [Int8, UInt8, Int16, UInt16, Int32, UInt32, Int64, UInt64,
                              Float16, Float32]

    b = rand(T)

    # Dims in tuple
    let A = Metal.fill(b, (10, 10, 10, 1000))
        B = fill(b, (10, 10, 10, 1000))
        @test Array(A) == B
    end
end
end

Result:

Test Summary:   | Pass  Fail  Total  Time
fill            |    2     8     10  3.0s
  fill(Int8)    |    1            1  0.2s
  fill(UInt8)   |    1            1  0.1s
  fill(Int16)   |          1      1  0.7s
  fill(UInt16)  |          1      1  0.3s
  fill(Int32)   |          1      1  0.1s
  fill(UInt32)  |          1      1  0.3s
  fill(Int64)   |          1      1  0.3s
  fill(UInt64)  |          1      1  0.3s
  fill(Float16) |          1      1  0.3s
  fill(Float32) |          1      1  0.3s
ERROR: Some tests did not pass: 2 passed, 8 failed, 0 errored, 0 broken.

[U]Int8 doesn't fail presumably because it's implemented with Metal instead of KA.

Version info:

macOS 15.0.1, Darwin 24.0.0

Toolchain:
- Julia: 1.11.1
- LLVM: 16.0.6

Julia packages: 
- Metal.jl: 1.4.0
- GPUArrays: 11.0.0
- GPUCompiler: 1.0.0
- KernelAbstractions: 0.9.28
- ObjectiveC: 3.1.0
- LLVM: 9.1.2
- LLVMDowngrader_jll: 0.3.0+1

1 device:
- Apple M2 Max (17.594 MiB allocated)

[christiangnrd]

Maybe dup of #442?

[christiangnrd]

A big enough Array will surface the error even with --check-bounds: https://buildkite.com/julialang/metal-dot-jl/builds/1380#0192a0ea-d20b-4760-8e2e-3886c6fc6fad