[PATCH] D65744: [PR42707][OpenCL] Fix addr space deduction for auto

[Anastasia Stulova via Phabricator via cfe-commits]

Anastasia created this revision.
Anastasia added a reviewer: rjmccall.
Herald added subscribers: ebevhan, yaxunl.

A regression was introduced in D64400 <https://reviews.llvm.org/D64400> because auto is using the same logic as templates. However, deduction of addr spaces wasn't working correctly even before.

Here are the rules that are implemented in this patch:

- For non-reference and non-pointer types deduction can be done early because addr space is not going to be taken from init expr
- For ref or ptr auto types we should prevent deducing addr space before the deduction of the whole type (incl its pointee addr spaces) from init expr


https://reviews.llvm.org/D65744

Files:
  include/clang/AST/Type.h
  lib/Sema/SemaType.cpp
  lib/Sema/TreeTransform.h
  test/SemaOpenCLCXX/addrspace-auto.cl

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