[clang] [C++20] [Modules] Don't mark variables from other modules as constant if its initializer is not constant (PR #93530)

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<!--LLVM CODE FORMAT COMMENT: {clang-format}-->


:warning: C/C++ code formatter, clang-format found issues in your code. :warning:

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``````````bash
git-clang-format --diff ea20647023f7bb110e8a198485727458684c43c6 778205df51376ddd38253b2ce5bab9dcab512774 -- clang/test/Modules/pr93497.cppm clang/lib/CodeGen/CodeGenModule.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/clang/lib/CodeGen/CodeGenModule.cpp b/clang/lib/CodeGen/CodeGenModule.cpp
index 5596a6708e..256825fde0 100644
--- a/clang/lib/CodeGen/CodeGenModule.cpp
+++ b/clang/lib/CodeGen/CodeGenModule.cpp
@@ -5491,10 +5491,10 @@ void CodeGenModule::EmitGlobalVarDefinition(const VarDecl *D,
     emitter->finalize(GV);
 
   // If it is safe to mark the global 'constant', do so now.
-  GV->setConstant(!NeedsGlobalCtor && !NeedsGlobalDtor &&
-                  (!IsDefinitionAvailableExternally ||
-                   D->hasConstantInitialization()) &&
-                  D->getType().isConstantStorage(getContext(), true, true));
+  GV->setConstant(
+      !NeedsGlobalCtor && !NeedsGlobalDtor &&
+      (!IsDefinitionAvailableExternally || D->hasConstantInitialization()) &&
+      D->getType().isConstantStorage(getContext(), true, true));
 
   // If it is in a read-only section, mark it 'constant'.
   if (const SectionAttr *SA = D->getAttr<SectionAttr>()) {

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https://github.com/llvm/llvm-project/pull/93530