[llvm] [MergeFuncs] Don't introduce calls to weak_odr functions. (PR #125050)

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``````````bash
git-clang-format --diff 2bde7a1b7c777ae0f0303af9634dd6e4a98cab00 ad402537682a67e74bf508c8032b653a6d9579ca --extensions cpp -- llvm/lib/Transforms/IPO/MergeFunctions.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Transforms/IPO/MergeFunctions.cpp b/llvm/lib/Transforms/IPO/MergeFunctions.cpp
index ea5e102156..7130e8ce04 100644
--- a/llvm/lib/Transforms/IPO/MergeFunctions.cpp
+++ b/llvm/lib/Transforms/IPO/MergeFunctions.cpp
@@ -891,8 +891,10 @@ bool MergeFunctions::writeThunkOrAlias(Function *F, Function *G) {
 
 // Merge two equivalent functions. Upon completion, Function G is deleted.
 void MergeFunctions::mergeTwoFunctions(Function *F, Function *G) {
-  if (F->isInterposable() || G->hasWeakODRLinkage() || G->hasLinkOnceODRLinkage()) {
-    assert(G->isInterposable() || G->hasWeakODRLinkage()|| G->hasLinkOnceODRLinkage());
+  if (F->isInterposable() || G->hasWeakODRLinkage() ||
+      G->hasLinkOnceODRLinkage()) {
+    assert(G->isInterposable() || G->hasWeakODRLinkage() ||
+           G->hasLinkOnceODRLinkage());
 
     // Both writeThunkOrAlias() calls below must succeed, either because we can
     // create aliases for G and NewF, or because a thunk for F is profitable.

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https://github.com/llvm/llvm-project/pull/125050