[all-commits] [llvm/llvm-project] 7bb7fa: [OpaquePtr] Support changing load type in InstCombine

[Nikita Popov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 7bb7fa12e73bd3c9fb66f05825758d729dd96ba5
      https://github.com/llvm/llvm-project/commit/7bb7fa12e73bd3c9fb66f05825758d729dd96ba5
  Author: Nikita Popov <nikita.ppv at gmail.com>
  Date:   2021-06-22 (Tue, 22 Jun 2021)

  Changed paths:
    M llvm/include/llvm/IR/Type.h
    M llvm/lib/IR/Type.cpp
    M llvm/lib/Transforms/InstCombine/InstCombineLoadStoreAlloca.cpp
    M llvm/test/Transforms/InstCombine/opaque-ptr.ll

  Log Message:
  -----------
  [OpaquePtr] Support changing load type in InstCombine

When the load type is changed to ptr, we need the load pointer type
to also be ptr, because it's not allowed to create a pointer to an
opaque pointer. This is achieved by adjusting the getPointerTo() API
to return an opaque pointer for an opaque pointer base type.

Differential Revision: https://reviews.llvm.org/D104718