[flang] [llvm] [mlir] [flang][OpenMP] Enable tiling (PR #143715)

[Kareem Ergawy via llvm-commits]

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@@ -2131,6 +2170,42 @@ genLoopOp(lower::AbstractConverter &converter, lower::SymMap &symTable,
   return loopOp;
 }
 
+static mlir::omp::LoopOp genTiledLoopOp(lower::AbstractConverter &converter,
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ergawy wrote:

Can we reuse `genLoopOp` instead of adding a new function?

https://github.com/llvm/llvm-project/pull/143715