[Unity] Recursive pattern match in rewrite_call#15495
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kparzysz-quic merged 1 commit intoapache:unityfrom Aug 10, 2023
Merged
[Unity] Recursive pattern match in rewrite_call#15495kparzysz-quic merged 1 commit intoapache:unityfrom
kparzysz-quic merged 1 commit intoapache:unityfrom
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Prior to this commit, pattern matches were evaluated a single time, in the order of the block bindings. If a pattern rewrite produced a node which would also match the pattern (e.g. recursive reordering), the pattern would still only be evaluated once. This commit updates `PatternMatcher` to iterate until convergence when provided with a pattern, analogous to its current behavior when called through `rewrite_bindings`.
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kparzysz-quic
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We should probably add some guards against looping forever eventually in the fixed point rewriting.
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Prior to this commit, pattern matches were evaluated a single time, in the order of the block bindings. If a pattern rewrite produced a node which would also match the pattern (e.g. recursive reordering), the pattern would still only be evaluated once.
This commit updates
PatternMatcherto iterate until convergence when provided with a pattern, analogous to its current behavior when called throughrewrite_bindings.