[all-commits] [llvm/llvm-project] c9f272: [clang][aarch64] Add support for the MSVC qualifie...

[Daniel Paoliello via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: c9f27275c1330a325661bdf14fb3bc444a5e3648
      https://github.com/llvm/llvm-project/commit/c9f27275c1330a325661bdf14fb3bc444a5e3648
  Author: Daniel Paoliello <danpao at microsoft.com>
  Date:   2024-10-15 (Tue, 15 Oct 2024)

  Changed paths:
    M clang/lib/Basic/Targets/AArch64.cpp
    M clang/lib/Basic/Targets/AArch64.h
    M clang/test/CodeGen/aarch64-type-sizes.c
    M clang/test/CodeGen/coff-aarch64-type-sizes.c
    M clang/test/CodeGen/ms-mixed-ptr-sizes.c
    M clang/test/CodeGen/target-data.c
    M llvm/lib/IR/AutoUpgrade.cpp
    M llvm/lib/Target/AArch64/AArch64TargetMachine.cpp
    M llvm/unittests/Bitcode/DataLayoutUpgradeTest.cpp

  Log Message:
  -----------
  [clang][aarch64] Add support for the MSVC qualifiers __ptr32, __ptr64, __sptr, __uptr for AArch64 (#111879)

MSVC has a set of qualifiers to allow using 32-bit signed/unsigned
pointers when building 64-bit targets. This is useful for WoW code
(i.e., the part of Windows that handles running 32-bit application on a
64-bit OS). Currently this is supported on x64 using the 270, 271 and
272 address spaces, but does not work for AArch64 at all.

This change adds the same 270, 271 and 272 address spaces to AArch64 and
adjusts the data layout string accordingly. Clang will generate the
correct address space casts, but these will currently be ignored until
the AArch64 backend is updated to handle them.

Partially fixes #62536

This is a resurrected version of <https://reviews.llvm.org/D158857>
(originally created by @a_vorobev) - I've cleaned it up a little, fixed
the rest of the tests and added to auto-upgrade for the data layout.



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