samitolvanen planned changes to this revision.
samitolvanen added a comment.

In D108479#3150298 <https://reviews.llvm.org/D108479#3150298>, @rjmccall wrote:

> Your builtin is using custom type-checking (`t`), which suppresses all the 
> normal conversions that happen on expressions.  Specifically, it skips 
> lvalue-to-rvalue conversion, so in this example the argument ends up being an 
> l-value reference to a variable rather than an r-value loaded from that 
> variable.

OK, that explains it. Thanks for the explanation!


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D108479/new/

https://reviews.llvm.org/D108479

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