[JuliaLowering] fix @nospecialize on unnamed arguments#60432
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Propagate `is_nospecialize` metadata for Placeholder arguments in desugaring and linear_ir generation. Fixes #44428
aviatesk
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Jan 7, 2026
Consists of two commits. The first commit is a fix to the scheme lowerer, ~~and the second is a fix to JuliaLowering.jl.~~ The second one was split into #60432 . Both commits include fixes for keyword arguments as well, but since `@nospecialize` for keyword arguments doesn't seem to have been tested well yet, and I think we probably first need to think about how to pass `@nospecialize` to the keyword sorter function if we want to properly support it, it might be fine to remove it. Fixes #44428 Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
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Propagate
is_nospecializemetadata for Placeholder arguments in desugaring and linear_ir generation.Separated from #60416.