[compiler-rt] [ubsan] Use the itanium type info lookup for mingw targets

[rnk]

compiler-rt/lib/ubsan/ubsan_type_hash_itanium.cpp

15

Truly, MSVC is the odd duck: I would change the condition to !defined(_MSC_VER), it will work for clang and msvc.

compiler-rt/lib/ubsan/ubsan_type_hash_win.cpp

15

Ditto, this could just be defined(_MSC_VER).

[mstorsjo]

Just checking _MSC_VER instead of checking SANITIZER_WINDOWS && !__MINGW32__.

[rnk]

lgtm

compiler-rt/lib/ubsan/ubsan_type_hash_itanium.cpp

 //===-- ubsan_type_hash_itanium.cpp ---------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
 // Implementation of type hashing/lookup for Itanium C++ ABI.
 //
 //===----------------------------------------------------------------------===//
 
 #include "sanitizer_common/sanitizer_platform.h"
 #include "ubsan_platform.h"
-#if CAN_SANITIZE_UB && !SANITIZER_WINDOWS
+#if CAN_SANITIZE_UB && (!SANITIZER_WINDOWS || defined(__MINGW32__))
 #include "ubsan_type_hash.h"
 
 #include "sanitizer_common/sanitizer_common.h"
 #include "sanitizer_common/sanitizer_ptrauth.h"
 
 // The following are intended to be binary compatible with the definitions
 // given in the Itanium ABI. We make no attempt to be ODR-compatible with
 // those definitions, since existing ABI implementations aren't.

compiler-rt/lib/ubsan/ubsan_type_hash_win.cpp

 //===-- ubsan_type_hash_win.cpp -------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
 // Implementation of type hashing/lookup for Microsoft C++ ABI.
 //
 //===----------------------------------------------------------------------===//
 
 #include "sanitizer_common/sanitizer_platform.h"
 #include "ubsan_platform.h"
-#if CAN_SANITIZE_UB && SANITIZER_WINDOWS
+#if CAN_SANITIZE_UB && SANITIZER_WINDOWS && !defined(__MINGW32__)
 #include "ubsan_type_hash.h"
 
 #include "sanitizer_common/sanitizer_common.h"
 
 #include <typeinfo>
 
 struct CompleteObjectLocator {
   int is_image_relative;