[clang] [llvm] [clang][DependencyScanner] Remove unused -ivfsoverlay files (PR #73734)

[Jan Svoboda via llvm-commits]

================
@@ -4991,18 +4991,17 @@ ASTReader::ASTReadResult ASTReader::readUnhashedControlBlockImpl(
         F->PragmaDiagMappings.insert(F->PragmaDiagMappings.end(),
                                      Record.begin(), Record.end());
       break;
-    case HEADER_SEARCH_ENTRY_USAGE:
-      if (!F)
-        break;
-      unsigned Count = Record[0];
-      const char *Byte = Blob.data();
-      F->SearchPathUsage = llvm::BitVector(Count, false);
-      for (unsigned I = 0; I < Count; ++Byte)
-        for (unsigned Bit = 0; Bit < 8 && I < Count; ++Bit, ++I)
-          if (*Byte & (1 << Bit))
-            F->SearchPathUsage[I] = true;
+    case HEADER_SEARCH_ENTRY_USAGE: {
----------------
jansvoboda11 wrote:

Nit: we might not need the braces around case bodies since they don't introduce new variables.

https://github.com/llvm/llvm-project/pull/73734