[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, 2 insertions, 2 deletions

diff --git a/llvm/lib/Transforms/Utils/LoopSimplify.cpp b/llvm/lib/Transforms/Utils/LoopSimplify.cpp
index b38fecd..66b59cdc 100644
--- a/llvm/lib/Transforms/Utils/LoopSimplify.cpp
+++ b/llvm/lib/Transforms/Utils/LoopSimplify.cpp
@@ -172,7 +172,7 @@ static void addBlockAndPredsToSet(BasicBlock *InputBB, BasicBlock *StopBlock,
 /// us how to partition the loops.
 static PHINode *findPHIToPartitionLoops(Loop *L, DominatorTree *DT,
                                         AssumptionCache *AC) {
-  const DataLayout &DL = L->getHeader()->getModule()->getDataLayout();
+  const DataLayout &DL = L->getHeader()->getDataLayout();
   for (BasicBlock::iterator I = L->getHeader()->begin(); isa<PHINode>(I); ) {
     PHINode *PN = cast<PHINode>(I);
     ++I;
@@ -588,7 +588,7 @@ ReprocessLoop:
   if (MSSAU && VerifyMemorySSA)
     MSSAU->getMemorySSA()->verifyMemorySSA();
 
-  const DataLayout &DL = L->getHeader()->getModule()->getDataLayout();
+  const DataLayout &DL = L->getHeader()->getDataLayout();
 
   // Scan over the PHI nodes in the loop header.  Since they now have only two
   // incoming values (the loop is canonicalized), we may have simplified the PHI