Move most user of TargetMachine::getDataLayout to the Module one

Summary:
This change is part of a series of commits dedicated to have a single
DataLayout during compilation by using always the one owned by the
module.

This patch is quite boring overall, except for some uglyness in
ASMPrinter which has a getDataLayout function but has some clients
that use it without a Module (llmv-dsymutil, llvm-dwarfdump), so
some methods are taking a DataLayout as parameter.

Reviewers: echristo

Subscribers: yaron.keren, rafael, llvm-commits, jholewinski

Differential Revision: http://reviews.llvm.org/D11090

From: Mehdi Amini <mehdi.amini@apple.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242386 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp

@@ -2909,7 +2909,7 @@ void SelectionDAGBuilder::visitLoad(const LoadInst &I) {
   // throughout the function's lifetime.
 
   bool isInvariant = I.getMetadata(LLVMContext::MD_invariant_load) != nullptr &&
-    isDereferenceablePointer(SV, *DAG.getTarget().getDataLayout());
+                     isDereferenceablePointer(SV, DAG.getDataLayout());
   unsigned Alignment = I.getAlignment();
 
   AAMDNodes AAInfo;