diff --git a/llvm/lib/IR/Instruction.cpp b/llvm/lib/IR/Instruction.cpp
index a4659da7e8073..2aa4ef8e73260 100644
--- a/llvm/lib/IR/Instruction.cpp
+++ b/llvm/lib/IR/Instruction.cpp
@@ -436,17 +436,17 @@ static bool haveSameSpecialState(const Instruction *I1, const Instruction *I2,
 
   if (const AllocaInst *AI = dyn_cast<AllocaInst>(I1))
     return AI->getAllocatedType() == cast<AllocaInst>(I2)->getAllocatedType() &&
-           (AI->getAlignment() == cast<AllocaInst>(I2)->getAlignment() ||
+           (AI->getAlign() == cast<AllocaInst>(I2)->getAlign() ||
             IgnoreAlignment);
   if (const LoadInst *LI = dyn_cast<LoadInst>(I1))
     return LI->isVolatile() == cast<LoadInst>(I2)->isVolatile() &&
-           (LI->getAlignment() == cast<LoadInst>(I2)->getAlignment() ||
+           (LI->getAlign() == cast<LoadInst>(I2)->getAlign() ||
             IgnoreAlignment) &&
            LI->getOrdering() == cast<LoadInst>(I2)->getOrdering() &&
            LI->getSyncScopeID() == cast<LoadInst>(I2)->getSyncScopeID();
   if (const StoreInst *SI = dyn_cast<StoreInst>(I1))
     return SI->isVolatile() == cast<StoreInst>(I2)->isVolatile() &&
-           (SI->getAlignment() == cast<StoreInst>(I2)->getAlignment() ||
+           (SI->getAlign() == cast<StoreInst>(I2)->getAlign() ||
             IgnoreAlignment) &&
            SI->getOrdering() == cast<StoreInst>(I2)->getOrdering() &&
            SI->getSyncScopeID() == cast<StoreInst>(I2)->getSyncScopeID();