Lower byval ourselves for PTX.

[maleadt]

Works around #92.

[maleadt]

Oh no: https://gitlab.com/JuliaGPU/GPUCompiler.jl/-/jobs/777529826
JuliaGPU/CUDAnative.jl#4 somehow coming back to bite me 😠

[codecov]

Codecov Report

Merging #93 (18baa2a) into master (7f5cf89) will increase coverage by 1.85%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master      #93      +/-   ##
==========================================
+ Coverage   82.44%   84.30%   +1.85%     
==========================================
  Files          22       22              
  Lines        1555     1529      -26     
==========================================
+ Hits         1282     1289       +7     
+ Misses        273      240      -33     

Impacted Files	Coverage Δ
src/ptx.jl	98.57% <100.00%> (-0.03%)	⬇️
src/rtlib.jl	92.55% <0.00%> (+0.97%)	⬆️
src/jlgen.jl	82.40% <0.00%> (+3.64%)	⬆️
src/irgen.jl	95.63% <0.00%> (+4.00%)	⬆️
src/interface.jl	75.00% <0.00%> (+5.00%)	⬆️
src/runtime.jl	51.78% <0.00%> (+6.47%)	⬆️
src/spirv.jl	94.17% <0.00%> (+7.76%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 7f5cf89...18baa2a. Read the comment docs.

[maleadt]

Let's test this with CUDA.jl.