IndVarSimplify: strip redundant getDataLayout (NFC) (#125546)

DataLayout is already available as a member variable.

Author: artagnon

llvm/lib/Transforms/Scalar/IndVarSimplify.cpp

@@ -1460,7 +1460,6 @@ bool IndVarSimplify::canonicalizeExitCondition(Loop *L) {
     if (!match(LHS, m_ZExt(m_Value(LHSOp))) || !ICmp->isSigned())
       continue;
 
-    const DataLayout &DL = ExitingBB->getDataLayout();
     const unsigned InnerBitWidth = DL.getTypeSizeInBits(LHSOp->getType());
     const unsigned OuterBitWidth = DL.getTypeSizeInBits(RHS->getType());
     auto FullCR = ConstantRange::getFull(InnerBitWidth);
@@ -1536,8 +1535,6 @@ bool IndVarSimplify::canonicalizeExitCondition(Loop *L) {
         DeadInsts.push_back(LHS);
     };
 
-
-    const DataLayout &DL = ExitingBB->getDataLayout();
     const unsigned InnerBitWidth = DL.getTypeSizeInBits(LHSOp->getType());
     const unsigned OuterBitWidth = DL.getTypeSizeInBits(RHS->getType());
     auto FullCR = ConstantRange::getFull(InnerBitWidth);