Unix arm64 atomics (#71512)

* Define_InterlockMethod macro

* compiler failure

* fix build errors

* Set g_arm64_atomics_present at common place

* Fix the missing declaration

* Change TARGET_ARM64 => HOST_ARM64

* Use LSE for InterlockedCompareExchange

* Attempt to fix osx-arm64 build issue

* Introduce LSE_INSTRUCTIONS_ENABLED_BY_DEFAULT

* Make sure that compiler knows that M1 has lse

eng/native/configurecompiler.cmake

@@ -375,6 +375,11 @@ if (CLR_CMAKE_HOST_UNIX)
  if(CLR_CMAKE_HOST_OSX OR CLR_CMAKE_HOST_MACCATALYST)
  # We cannot enable "stack-protector-strong" on OS X due to a bug in clang compiler (current version 7.0.2)
  add_compile_options(-fstack-protector)
+ if(CLR_CMAKE_HOST_UNIX_ARM64)
+ # For OSX-Arm64, LSE instructions are enabled by default
+ add_definitions(-DLSE_INSTRUCTIONS_ENABLED_BY_DEFAULT)
+ add_compile_options(-mcpu=apple-m1)
+ endif(CLR_CMAKE_HOST_UNIX_ARM64)
  elseif(NOT CLR_CMAKE_HOST_BROWSER)
  check_c_compiler_flag(-fstack-protector-strong COMPILER_SUPPORTS_F_STACK_PROTECTOR_STRONG)
  if (COMPILER_SUPPORTS_F_STACK_PROTECTOR_STRONG)

src/coreclr/debug/createdump/datatarget.cpp

@@ -3,6 +3,12 @@
 
 #include "createdump.h"
 
+#if defined(HOST_ARM64)
+// Flag to check if atomics feature is available on
+// the machine
+bool g_arm64_atomics_present = false;
+#endif
+
 DumpDataTarget::DumpDataTarget(CrashInfo& crashInfo) :
  m_ref(1),
  m_crashInfo(crashInfo)

src/coreclr/dlls/mscordbi/mscordbi.cpp

@@ -19,6 +19,13 @@ extern BOOL WINAPI DbgDllMain(HINSTANCE hInstance, DWORD dwReason,
 //*****************************************************************************
 extern "C"
 #ifdef TARGET_UNIX
+
+#if defined(HOST_ARM64)
+// Flag to check if atomics feature is available on
+// the machine
+bool g_arm64_atomics_present = false;
+#endif
+
 DLLEXPORT // For Win32 PAL LoadLibrary emulation
 #endif
 BOOL WINAPI DllMain(HINSTANCE hInstance, DWORD dwReason, LPVOID lpReserved)