[PATCH] D62319: IR: add 'size <N>' attribute to 'byval' function parameters

[James Y Knight via Phabricator via llvm-commits]

jyknight added a comment.

One of the other suggestions was to pass a _type_ as a parameter to byval. IMO that would be the nicest idea (but I don't know if it's infeasibly difficult?)

In the transitory state, you'd need to specify the exact pointee-type to byval, as is specified in the pointee type of the argument.
E.g.:

  define i8 @f({i32, i8}* byval({i32, i8}) %p) ...

In the future, that'd then turn into:

  define i8 @f(ptr byval({i32, i8}) %p) ...




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  https://reviews.llvm.org/D62319/new/

https://reviews.llvm.org/D62319