craig.topper added a comment.

In D62580#1521277 <https://reviews.llvm.org/D62580#1521277>, @erichkeane wrote:

> A different (perhaps silly) question is why 'W' isn't sufficient?  It 
> represents int64_t, which I wonder if is sufficient.


I had asked in a separate conversation not to change the signatures outside of 
opencl. I believe W would use 'long' on 64-bit targets that aren't Windows or 
X32. The builtins are defined by gcc as well so I wanted to avoid making them 
different as much as possible.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D62580/new/

https://reviews.llvm.org/D62580



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