[TIR] Improved SeqStmt::Flatten utility #14497
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Prior to this commit, `SeqStmt::Flatten` could accept an arbitrary number of arguments, where each argument was of type `const tir::Stmt&` or an iterable. However, if `SeqStmt::Flatten` were passed a subclass of `tir::Stmt`, the templated overload was selected as the better match. This commit rewrites `SeqStmt::Flatten` using C++17's `"constexpr if"` feature, to handle cases of `SeqStmt`, superclasses of `SeqStmt`, and other subclasses of `Stmt`.
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This issue came up during development on #14486, but ended up not being needed for it. |
kparzysz-quic
approved these changes
Apr 4, 2023
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Prior to this commit,
SeqStmt::Flattencould accept an arbitrary number of arguments, where each argument was of typeconst tir::Stmt&or an iterable. However, ifSeqStmt::Flattenwere passed a subclass oftir::Stmt, the templated overload was selected as the better match. This commit rewritesSeqStmt::Flattenusing C++17's"constexpr if"feature, to handle cases ofSeqStmt, superclasses ofSeqStmt, and other subclasses ofStmt.