[Alignement][NFC] Deprecate untyped CreateAlignedLoad

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: arsenm, jvesely, nhaehnle, hiraditya, kerbowa, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D73260
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp b/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
index 787496b..657d95b 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
@@ -1056,7 +1056,8 @@
 // * Narrow width by halfs excluding zero/undef lanes
 Value *InstCombiner::simplifyMaskedLoad(IntrinsicInst &II) {
   Value *LoadPtr = II.getArgOperand(0);
-  unsigned Alignment = cast<ConstantInt>(II.getArgOperand(1))->getZExtValue();
+  const Align Alignment =
+      cast<ConstantInt>(II.getArgOperand(1))->getAlignValue();
 
   // If the mask is all ones or undefs, this is a plain vector load of the 1st
   // argument.
@@ -1066,9 +1067,9 @@
 
   // If we can unconditionally load from this address, replace with a
   // load/select idiom. TODO: use DT for context sensitive query
-  if (isDereferenceableAndAlignedPointer(
-          LoadPtr, II.getType(), MaybeAlign(Alignment),
-          II.getModule()->getDataLayout(), &II, nullptr)) {
+  if (isDereferenceableAndAlignedPointer(LoadPtr, II.getType(), Alignment,
+                                         II.getModule()->getDataLayout(), &II,
+                                         nullptr)) {
     Value *LI = Builder.CreateAlignedLoad(II.getType(), LoadPtr, Alignment,
                                          "unmaskedload");
     return Builder.CreateSelect(II.getArgOperand(2), LI, II.getArgOperand(3));
@@ -1459,7 +1460,7 @@
 
   auto *BCastInst = Builder.CreateBitCast(II.getArgOperand(0),
                                           PointerType::get(II.getType(), 0));
-  return Builder.CreateAlignedLoad(II.getType(), BCastInst, Alignment);
+  return Builder.CreateAlignedLoad(II.getType(), BCastInst, Align(Alignment));
 }
 
 // Returns true iff the 2 intrinsics have the same operands, limiting the