[llvm] [DebugNames] Compare TableEntry names more efficiently (PR #79759)

[Adrian Prantl via llvm-commits]

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@@ -543,6 +543,27 @@ class DWARFDebugNames : public DWARFAcceleratorTable {
       return StrData.getCStr(&Off);
     }
 
+    // Compares the name of this entry against Target, returning true if they
+    // are equal. This is helpful is hot code paths that do not need the length
+    // of the name.
+    bool compareNameAgainst(StringRef Target) const {
+      // Note: this is not the name, but the rest of debug_names starting from
+      // name. This handles corrupt data (non-null terminated) without
+      // overruning the buffer.
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adrian-prantl wrote:

```suggestion
      // overrunning the buffer.
```

https://github.com/llvm/llvm-project/pull/79759