MSVC changes

Add support for compilation on x64 toolchain (x86 cl.exe was running out of heap space in vm.cpp)

Also took the opportunity to change compile optimisation from /Ox to /O2, as /O2 provides better optimisation than does /Ox

Also, we shouldn't be explicitely setting compiler tool defines (__cpp_lib_bitops), so remove that from types.h

asmjitsrc/asmjit.vcxproj

@@ -96,6 +96,9 @@
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <PropertyGroup>
+    <PreferredToolArchitecture>x64</PreferredToolArchitecture>
+  </PropertyGroup>
   <ImportGroup Label="ExtensionSettings">
   </ImportGroup>
   <ImportGroup Label="PropertySheets">
@@ -125,6 +128,7 @@
     <ClCompile>
       <PrecompiledHeader>NotUsing</PrecompiledHeader>
       <PreprocessorDefinitions>ASMJIT_STATIC;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <Optimization Condition="'$(Configuration)|$(Platform)'=='Release - LLVM|x64'">MaxSpeed</Optimization>
     </ClCompile>
   </ItemDefinitionGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />