1 files changed, 6 insertions, 3 deletions
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp b/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp
index 2c2b7317a1c..4ca967d3afb 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp
@@ -4508,13 +4508,16 @@ Instruction *InstCombiner::visitICmpInst(ICmpInst &I) {
                           Builder->CreateAnd(A, B),
                           Op1);
 
-    // ~x < ~y --> y < x
-    // ~x < cst --> ~cst < x
+    // ~X < ~Y --> Y < X
+    // ~X < C -->  X > ~C
     if (match(Op0, m_Not(m_Value(A)))) {
       if (match(Op1, m_Not(m_Value(B))))
         return new ICmpInst(I.getPredicate(), B, A);
+
+      // FIXME: Use m_APInt to include splat vector constants.
       if (ConstantInt *RHSC = dyn_cast<ConstantInt>(Op1))
-        return new ICmpInst(I.getPredicate(), ConstantExpr::getNot(RHSC), A);
+        return new ICmpInst(I.getSwappedPredicate(), A,
+                            ConstantExpr::getNot(RHSC));
     }
 
     Instruction *AddI = nullptr;