[llvm-branch-commits] [llvm] [LoopInterchange] Reject if outer reduction value has extra user (PR #203241)

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

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``````````diff
diff --git a/llvm/lib/Transforms/Scalar/LoopInterchange.cpp b/llvm/lib/Transforms/Scalar/LoopInterchange.cpp
index 5e0af6fe7..c96dfc102 100644
--- a/llvm/lib/Transforms/Scalar/LoopInterchange.cpp
+++ b/llvm/lib/Transforms/Scalar/LoopInterchange.cpp
@@ -1281,21 +1281,23 @@ bool LoopInterchangeLegality::checkInductionsAndReductions(Loop *OuterLoop) {
           return false;
         }
 
-        // Reject if PHI has users other than InnerRedPhi. The typical case is as follows:
+        // Reject if PHI has users other than InnerRedPhi. The typical case is
+        // as follows:
         //
         //   o.header:
         //     %red.o = phi [ 0, ... ], [ %red.next, %o.latch ]
         //     br label %i.header
-        //  
+        //
         //   i.header:
         //     %red.i = phi [ %red.o, %o.header ], [ %red.next, %i.latch ]
         //     br label %i.body
-        //  
+        //
         //   i.body:
         //     store %red.o to %mem
         //     ...
-        // 
-        if (!all_of(PHI.users(), [InnerRedPhi](User *U) { return U == InnerRedPhi; }))
+        //
+        if (!all_of(PHI.users(),
+                    [InnerRedPhi](User *U) { return U == InnerRedPhi; }))
           return false;
 
         OuterInnerReductions.insert(&PHI);

``````````

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https://github.com/llvm/llvm-project/pull/203241