[analyzer] PR8962 again. Ban ParenExprs (and friends) from block-level expressions (by calling IgnoreParens before adding expressions to blocks). Undo 132769 (LiveVariables' local IgnoreParens), since it's no longer necessary.
Also, have Environment stop looking through NoOp casts; it didn't match the behavior of LiveVariables. And once that's gone, the whole cast block of that switch is unnecessary.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@132840
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projects / clang / commit