[PATCH] D49756: Add maybe-unused attribute to a variable.

[Nick Desaulniers via Phabricator via llvm-commits]

nickdesaulniers created this revision.
Herald added a subscriber: llvm-commits.

Mark a variable as maybe-unused to prevent a -Wunused-but-set-variable
warning in optimized builds where asserts are removed.Test/first commit
to check setup and understand patch submission process.


Repository:
  rL LLVM

https://reviews.llvm.org/D49756

Files:
  lib/IR/SafepointIRVerifier.cpp


Index: lib/IR/SafepointIRVerifier.cpp
===================================================================
--- lib/IR/SafepointIRVerifier.cpp
+++ lib/IR/SafepointIRVerifier.cpp
@@ -84,7 +84,7 @@
   bool hasLiveIncomingEdge(const PHINode *PN, const BasicBlock *InBB) const {
     assert(!isDeadBlock(InBB) && "block must be live");
     const BasicBlock* BB = PN->getParent();
-    bool Listed = false;
+    [[maybe_unused]] bool Listed = false;
     for (const_pred_iterator PredIt(BB), End(BB, true); PredIt != End; ++PredIt) {
       if (InBB == *PredIt) {
         if (!isDeadEdge(&getEdge(PredIt)))


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