[IR] Add getDataLayout() helpers to BasicBlock and Instruction (#96902)

This is a helper to avoid writing `getModule()->getDataLayout()`. I
regularly try to use this method only to remember it doesn't exist...

`getModule()->getDataLayout()` is also a common (the most common?)
reason why code has to include the Module.h header.

1 files changed, 3 insertions, 3 deletions

diff --git a/llvm/lib/Transforms/Utils/Local.cpp b/llvm/lib/Transforms/Utils/Local.cpp
index e6e5c39..6ebf9e1 100644
--- a/llvm/lib/Transforms/Utils/Local.cpp
+++ b/llvm/lib/Transforms/Utils/Local.cpp
@@ -731,7 +731,7 @@ simplifyAndDCEInstruction(Instruction *I,
 bool llvm::SimplifyInstructionsInBlock(BasicBlock *BB,
                                        const TargetLibraryInfo *TLI) {
   bool MadeChange = false;
-  const DataLayout &DL = BB->getModule()->getDataLayout();
+  const DataLayout &DL = BB->getDataLayout();
 
 #ifndef NDEBUG
   // In debug builds, ensure that the terminator of the block is never replaced
@@ -1601,7 +1601,7 @@ static bool PhiHasDebugValue(DILocalVariable *DIVar,
 /// value when doing the comparison. E.g. an i1 value will be identified as
 /// covering an n-bit fragment, if the store size of i1 is at least n bits.
 static bool valueCoversEntireFragment(Type *ValTy, DbgVariableIntrinsic *DII) {
-  const DataLayout &DL = DII->getModule()->getDataLayout();
+  const DataLayout &DL = DII->getDataLayout();
   TypeSize ValueSize = DL.getTypeAllocSizeInBits(ValTy);
   if (std::optional<uint64_t> FragmentSize =
           DII->getExpression()->getActiveBits(DII->getVariable()))
@@ -3371,7 +3371,7 @@ void llvm::copyMetadataForLoad(LoadInst &Dest, const LoadInst &Source) {
   Source.getAllMetadata(MD);
   MDBuilder MDB(Dest.getContext());
   Type *NewType = Dest.getType();
-  const DataLayout &DL = Source.getModule()->getDataLayout();
+  const DataLayout &DL = Source.getDataLayout();
   for (const auto &MDPair : MD) {
     unsigned ID = MDPair.first;
     MDNode *N = MDPair.second;