[llvm] c36c462 - [LTO] Simplify calculateCallGraphRoot (NFC) (#107765)

[via llvm-commits]

Author: Kazu Hirata
Date: 2024-09-09T09:44:37-07:00
New Revision: c36c462cc719d47aa2408bca91a028300b2be6d4

URL: https://github.com/llvm/llvm-project/commit/c36c462cc719d47aa2408bca91a028300b2be6d4
DIFF: https://github.com/llvm/llvm-project/commit/c36c462cc719d47aa2408bca91a028300b2be6d4.diff

LOG: [LTO] Simplify calculateCallGraphRoot (NFC) (#107765)

The function returns an instance of FunctionSummary populated by
calculateCallGraphRoot regardless of whether Edges is empty or not.

Added: 
    

Modified: 
    llvm/include/llvm/IR/ModuleSummaryIndex.h

Removed: 
    


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diff  --git a/llvm/include/llvm/IR/ModuleSummaryIndex.h b/llvm/include/llvm/IR/ModuleSummaryIndex.h
index dae208d0b132e4..288aba16702f56 100644
--- a/llvm/include/llvm/IR/ModuleSummaryIndex.h
+++ b/llvm/include/llvm/IR/ModuleSummaryIndex.h
@@ -1544,14 +1544,7 @@ class ModuleSummaryIndex {
         continue; // skip over non-root nodes
       Edges.push_back(std::make_pair(P.first, CalleeInfo{}));
     }
-    if (Edges.empty()) {
-      // Failed to find root - return an empty node
-      return FunctionSummary::makeDummyFunctionSummary(
-          SmallVector<FunctionSummary::EdgeTy, 0>());
-    }
-    auto CallGraphRoot =
-        FunctionSummary::makeDummyFunctionSummary(std::move(Edges));
-    return CallGraphRoot;
+    return FunctionSummary::makeDummyFunctionSummary(std::move(Edges));
   }
 
   bool withGlobalValueDeadStripping() const {