[PATCH] D53914: [ADT] Fix support for over-aligned pointers in PointerSumType

[Eugene Sharygin via Phabricator via llvm-commits]

eush created this revision.
eush added reviewers: chandlerc, rsmith.
Herald added subscribers: kristina, dexonsmith.

This fixes compilation error when the tag of `PointerSumType` is wider than an
`int`, which is the case when the payload has too many low bits available.

E.g. on x86-64 when the payload is 8 bit wide and the tag is 56 bit wide, GCC
reports the following error message:

  include/llvm/ADT/PointerSumType.h:252:37: error: right operand of shift expression ‘(1 << 56)’ is >= than the precision of the left operand [-fpermissive]
       static_assert(MemberT::Tag < (1 << NumTagBits),
                                    ~~~^~~~~~~~~~~~~~


Repository:
  rL LLVM

https://reviews.llvm.org/D53914

Files:
  include/llvm/ADT/PointerSumType.h
  unittests/ADT/PointerSumTypeTest.cpp

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