diff --git a/clang/lib/CodeGen/CodeGenModule.cpp b/clang/lib/CodeGen/CodeGenModule.cpp
--- a/clang/lib/CodeGen/CodeGenModule.cpp
+++ b/clang/lib/CodeGen/CodeGenModule.cpp
@@ -6550,8 +6550,21 @@
 
   llvm::NamedMDNode *GCov = TheModule.getOrInsertNamedMetadata("llvm.gcov");
   llvm::LLVMContext &Ctx = TheModule.getContext();
-  auto *CoverageDataFile =
+  llvm::MDString *CoverageDataFile = nullptr;
+  auto &PrefixMap = getCodeGenOpts().CoveragePrefixMap;
+  llvm::SmallString<256> File;
+  if (!PrefixMap.empty()) {
+    File = getCodeGenOpts().CoverageDataFile;
+    llvm::sys::path::remove_dots(File, /*remove_dot_dot=*/true);
+    for (const auto &Entry : PrefixMap) {
+      if (llvm::sys::path::replace_path_prefix(File, Entry.first, Entry.second))
+        break;
+    }
+    CoverageDataFile = llvm::MDString::get(Ctx, File.c_str());
+  } else {
+    CoverageDataFile =
       llvm::MDString::get(Ctx, getCodeGenOpts().CoverageDataFile);
+  }
   auto *CoverageNotesFile =
       llvm::MDString::get(Ctx, getCodeGenOpts().CoverageNotesFile);
   for (int i = 0, e = CUNode->getNumOperands(); i != e; ++i) {