69969c725b
This patch uses `DIExpression::foldConstantMath()` at the end of a `DIExpression::append()`. Which should help in reducing the size of DIExpressions that grow because of salvaging debug info This is part of a stack of patches and comes after: https://github.com/llvm/llvm-project/pull/69768 https://github.com/llvm/llvm-project/pull/71717 https://github.com/llvm/llvm-project/pull/71718