diff --git a/llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp b/llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp
index 8323d0d8562a..b496278ebd6e 100644
--- a/llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp
+++ b/llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp
@@ -1329,7 +1329,8 @@ void VPInstruction::execute(VPTransformState &State) {
 }
 
 bool VPInstruction::opcodeMayReadOrWriteFromMemory() const {
-  if (Instruction::isBinaryOp(getOpcode()) || Instruction::isCast(getOpcode()))
+  if (Instruction::isBinaryOp(getOpcode()) ||
+      Instruction::isUnaryOp(getOpcode()) || Instruction::isCast(getOpcode()))
     return false;
   switch (getOpcode()) {
   case Instruction::GetElementPtr:
diff --git a/llvm/unittests/Transforms/Vectorize/VPlanTest.cpp b/llvm/unittests/Transforms/Vectorize/VPlanTest.cpp
index ec9c904a08b2..017aa6dab705 100644
--- a/llvm/unittests/Transforms/Vectorize/VPlanTest.cpp
+++ b/llvm/unittests/Transforms/Vectorize/VPlanTest.cpp
@@ -1441,6 +1441,16 @@ TEST_F(VPRecipeTest, MayHaveSideEffectsAndMayReadWriteMemory) {
     EXPECT_FALSE(Recipe.mayWriteToMemory());
     EXPECT_FALSE(Recipe.mayReadOrWriteMemory());
   }
+  {
+    VPValue *Op1 = Plan.getConstantInt(Int32, 1);
+    VPInstruction VPInst(Instruction::FNeg, {Op1},
+                         VPIRFlags::getDefaultFlags(Instruction::FNeg));
+    VPRecipeBase &Recipe = VPInst;
+    EXPECT_FALSE(Recipe.mayHaveSideEffects());
+    EXPECT_FALSE(Recipe.mayReadFromMemory());
+    EXPECT_FALSE(Recipe.mayWriteToMemory());
+    EXPECT_FALSE(Recipe.mayReadOrWriteMemory());
+  }
   {
     VPValue *Op1 = Plan.getOrAddLiveIn(ConstantInt::get(Int32, 1));
     VPPredInstPHIRecipe Recipe(Op1, {});