[llvm] [SimpleLoopUnswitch] Fix bug in partially invariant unswitching (PR #222118)

via llvm-commits llvm-commits at lists.llvm.org
Wed Sep 9 11:54:31 PDT 2026


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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp -- llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp --diff_from_common_commit
``````````

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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp b/llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp
index 300ff3258..045c259f0 100644
--- a/llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp
+++ b/llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp
@@ -2793,8 +2793,8 @@ static bool collectUnswitchCandidates(
   if (MSSAU && HeaderCondGuaranteedToExecute &&
       !findOptionMDForLoop(&L, "llvm.loop.unswitch.partial.disable") &&
       !any_of(UnswitchCandidates, [&L](auto &TerminatorAndInvariants) {
-         return TerminatorAndInvariants.TI == L.getHeader()->getTerminator();
-       })) {
+        return TerminatorAndInvariants.TI == L.getHeader()->getTerminator();
+      })) {
     MemorySSA *MSSA = MSSAU->getMemorySSA();
     if (auto Info = hasPartialIVCondition(L, MSSAThreshold, *MSSA, AA)) {
       LLVM_DEBUG(

``````````

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https://github.com/llvm/llvm-project/pull/222118


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