[clang] [llvm] [clang][aarch64] Add support for the MSVC qualifiers __ptr32, __ptr64, __sptr, __uptr for AArch64 (PR #111879)

[Eli Friedman via cfe-commits]

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@@ -1,5 +1,6 @@
 // RUN: %clang_cc1 -triple x86_64-windows-msvc -fms-extensions -emit-llvm -O2 < %s | FileCheck %s --check-prefixes=X64,ALL
 // RUN: %clang_cc1 -triple i386-pc-win32 -fms-extensions -emit-llvm -O2 < %s | FileCheck %s --check-prefixes=X86,ALL
+// RUN: %clang_cc1 -triple aarch64-windows-msvc -fms-extensions -emit-llvm -O2 < %s | FileCheck %s --check-prefixes=AARCH64,ALL
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efriedma-quic wrote:

Do we also need some tests in the backend?  I guess most things likely work because we already did most of the work for the aarch64_32 ABI, but I'd like to see some tests that the basics work (load/store/arguments/return values).

https://github.com/llvm/llvm-project/pull/111879