[compiler-rt] Test fixups for MSVC. (PR #109887)

[Saleem Abdulrasool via llvm-commits]

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@@ -2,12 +2,16 @@
 //
 // RUN: %clangxx_asan %s -o %t && %env_asan_opts=handle_sigill=0 not --crash %run %t 2>&1 | FileCheck %s --check-prefix=CHECK0
 // RUN: %clangxx_asan %s -o %t && %env_asan_opts=handle_sigill=1 not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK1
-// REQUIRES: x86-target-arch
+// REQUIRES: x86-target-arch && (!MSVC || asan-32-bits)
 
 #ifdef _WIN32
 #include <windows.h>
 #endif
 
+#if _MSC_VER && !defined(__clang__)
+#define __builtin_trap() __asm ud2;
+#endif
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compnerd wrote:

This isn't safe - the `__asm` is limited to x86 and not available at x86_64.

https://github.com/llvm/llvm-project/pull/109887