llvmbot wrote:

<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang

Author: None (llvmbot)

<details>
<summary>Changes</summary>

Backport ada79f4

Requested by: @<!-- -->jansvoboda11

---
Full diff: https://github.com/llvm/llvm-project/pull/177383.diff


1 Files Affected:

- (modified) clang/lib/Serialization/ModuleManager.cpp (+5-5) 


``````````diff
diff --git a/clang/lib/Serialization/ModuleManager.cpp 
b/clang/lib/Serialization/ModuleManager.cpp
index 236fe20fdad7c..dad6840947ece 100644
--- a/clang/lib/Serialization/ModuleManager.cpp
+++ b/clang/lib/Serialization/ModuleManager.cpp
@@ -105,6 +105,10 @@ ModuleManager::addModule(StringRef FileName, ModuleKind 
Type,
                          std::string &ErrorStr) {
   Module = nullptr;
 
+  uint64_t InputFilesValidationTimestamp = 0;
+  if (Type == MK_ImplicitModule)
+    InputFilesValidationTimestamp = ModCache.getModuleTimestamp(FileName);
+
   // Look for the file entry. This only fails if the expected size or
   // modification time differ.
   OptionalFileEntryRef Entry;
@@ -172,11 +176,7 @@ ModuleManager::addModule(StringRef FileName, ModuleKind 
Type,
   NewModule->Index = Chain.size();
   NewModule->FileName = FileName.str();
   NewModule->ImportLoc = ImportLoc;
-  NewModule->InputFilesValidationTimestamp = 0;
-
-  if (NewModule->Kind == MK_ImplicitModule)
-    NewModule->InputFilesValidationTimestamp =
-        ModCache.getModuleTimestamp(NewModule->FileName);
+  NewModule->InputFilesValidationTimestamp = InputFilesValidationTimestamp;
 
   // Load the contents of the module
   if (std::unique_ptr<llvm::MemoryBuffer> Buffer = lookupBuffer(FileName)) {

``````````

</details>


https://github.com/llvm/llvm-project/pull/177383
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