[llvm] [NFC][hwasan] Convert ShadowMapping into class (PR #109616)

[Florian Mayer via llvm-commits]

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@@ -395,15 +395,40 @@ class HWAddressSanitizer {
   ///
   /// If WithFrameRecord is true, then __hwasan_tls will be used to access the
   /// ring buffer for storing stack allocations on targets that support it.
-  struct ShadowMapping {
+  class ShadowMapping {
     uint8_t Scale;
     uint64_t Offset;
     bool InGlobal;
     bool InTls;
     bool WithFrameRecord;
 
+  public:
     void init(Triple &TargetTriple, bool InstrumentWithCalls);
     Align getObjectAlignment() const { return Align(1ULL << Scale); }
+    bool isInGlobal() const {
+      return !InGlobal && !InTls && Offset == kDynamicShadowSentinel;
+    }
+    bool isInifunc() const {
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fmayer wrote:

nit: `isInIfunc`?

https://github.com/llvm/llvm-project/pull/109616