[PATCH] D127190: [analyzer][NFC] Add LLVM_UNLIKELY to assumeDualImpl

Gabor Marton via Phabricator via cfe-commits cfe-commits at lists.llvm.org
Tue Jun 7 01:33:54 PDT 2022


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Aligned with the measures we had in D124674 <https://reviews.llvm.org/D124674>, this condition seems to be
unlikely.

Nevertheless, I've made some new measurments with stats just for this,
and data confirms this is indeed unlikely.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D127190

Files:
  clang/lib/StaticAnalyzer/Core/ConstraintManager.cpp


Index: clang/lib/StaticAnalyzer/Core/ConstraintManager.cpp
===================================================================
--- clang/lib/StaticAnalyzer/Core/ConstraintManager.cpp
+++ clang/lib/StaticAnalyzer/Core/ConstraintManager.cpp
@@ -47,7 +47,7 @@
 ConstraintManager::ProgramStatePair
 ConstraintManager::assumeDualImpl(ProgramStateRef &State,
                                   AssumeFunction &Assume) {
-  if (State->isPosteriorlyOverconstrained())
+  if (LLVM_UNLIKELY(State->isPosteriorlyOverconstrained()))
     return {State, State};
 
   // Assume functions might recurse (see `reAssume` or `tryRearrange`). During


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