tree f6134654d6cfecfccfcd14aa0e847c1913bcb2b6
parent a5c78ae3ea906cdbd759d83511509a985b4b3c8f
author Paul Wankadia <junyer@google.com> 1587392383 -0700
committer Paul Wankadia <junyer@google.com> 1587393534 +0000

Remove memrchr() and the logic that calls it.

The DFA execution engine can run backwards unanchored, but RE2 only ever
needs it to run backwards anchored, so there's no need for memrchr().

Change-Id: I77a53293f4d6422ecd55760100a70e951ac5fb7f
Reviewed-on: https://code-review.googlesource.com/c/re2/+/55070
Reviewed-by: Paul Wankadia <junyer@google.com>