hliao added a comment.

Besides the unpromotable `alloca` issue due to indirect accesses, such coercion 
to GLOBAL pointer directly is not safe as, in HIP/CUDA, both CONSTANT and 
GLOBAL pointers would be passed as the kernel arguments. Without introducing a 
new address space combing GLOBAL/CONSTANT, such coercion would be unsafe.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D89980/new/

https://reviews.llvm.org/D89980

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