[Alignment][NFC] Finish transition for Loads

Summary:
This is patch is part of a series to introduce an Alignment type.
See this thread for context: http://lists.llvm.org/pipermail/llvm-dev/2019-July/133851.html
See this patch for the introduction of the type: https://reviews.llvm.org/D64790

Reviewers: courbet

Subscribers: hiraditya, asbirlea, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D69253

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@375419 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Analysis/ValueTracking.cpp

@@ -3938,9 +3938,9 @@ bool llvm::isSafeToSpeculativelyExecute(const Value *V,
     if (mustSuppressSpeculation(*LI))
       return false;
     const DataLayout &DL = LI->getModule()->getDataLayout();
-    return isDereferenceableAndAlignedPointer(LI->getPointerOperand(),
-                                              LI->getType(), LI->getAlignment(),
-                                              DL, CtxI, DT);
+    return isDereferenceableAndAlignedPointer(
+        LI->getPointerOperand(), LI->getType(), MaybeAlign(LI->getAlignment()),
+        DL, CtxI, DT);
   }
   case Instruction::Call: {
     auto *CI = cast<const CallInst>(Inst);