consexprs added

Author: cferris1000

compiler-rt/lib/scudo/standalone/memtag.h

@@ -108,7 +108,7 @@ inline void enableSystemMemoryTaggingTestOnly() {
 
 #else // !SCUDO_CAN_USE_MTE
 
-inline bool systemSupportsMemoryTagging() { return false; }
+inline constexpr bool systemSupportsMemoryTagging() { return false; }
 
 inline NORETURN bool systemDetectsMemoryTagFaultsTestOnly() {
   UNREACHABLE("memory tagging not supported");
@@ -261,7 +261,7 @@ inline uptr loadTag(uptr Ptr) {
 
 #else
 
-inline bool systemSupportsMemoryTagging() { return false; }
+inline constexpr bool systemSupportsMemoryTagging() { return false; }
 
 inline NORETURN bool systemDetectsMemoryTagFaultsTestOnly() {
   UNREACHABLE("memory tagging not supported");

compiler-rt/lib/scudo/standalone/options.h

@@ -38,7 +38,8 @@ struct Options {
   }
 };
 
-template <typename Config> bool useMemoryTagging(const Options &Options) {
+template <typename Config>
+constexpr bool useMemoryTagging(const Options &Options) {
   return allocatorSupportsMemoryTagging<Config>() &&
          Options.get(OptionBit::UseMemoryTagging);
 }