Fix jl_arraycopy on phi

[wsmoses]

No description provided.

[codecov-commenter]

Codecov Report

Merging #336 (c99f305) into main (2907fa2) will decrease coverage by 0.38%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #336      +/-   ##
==========================================
- Coverage   75.24%   74.85%   -0.39%     
==========================================
  Files          16       16              
  Lines        3801     3802       +1     
==========================================
- Hits         2860     2846      -14     
- Misses        941      956      +15     

Impacted Files	Coverage Δ
src/compiler.jl	73.28% <100.00%> (+0.02%)	⬆️
src/compiler/orcv2.jl	61.90% <0.00%> (-10.48%)	⬇️
src/compiler/orcv1.jl	76.92% <0.00%> (-3.85%)	⬇️
src/compiler/validation.jl	63.73% <0.00%> (-0.71%)	⬇️
src/Enzyme.jl	87.74% <0.00%> (-0.04%)	⬇️

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