tree 0f37daf9306f5537d1477953e5a77f470bf1897c
parent 3b8dd79013b63f29cbc132a25489f1125f41ca9f
author commit-queue@webkit.org <commit-queue@webkit.org@268f45cc-cd09-0410-ab3c-d52691b4dbfc> 1563237747 +0000
committer commit-queue@webkit.org <commit-queue@webkit.org@268f45cc-cd09-0410-ab3c-d52691b4dbfc> 1563237747 +0000

Keyword lookup can use memcmp to get around unaligned load undefined behavior
https://bugs.webkit.org/show_bug.cgi?id=199650

Patch by Saagar Jha <saagarjha@apple.com> on 2019-07-15
Reviewed by Yusuke Suzuki.

Replace KeywordLookup's hand-rolled "memcmp" with the standard version, which reduces the need to deal with
endianness and unaligned loads.

* KeywordLookupGenerator.py:
(Trie.printSubTreeAsC): Use memcmp instead of macros to test for matches.
(Trie.printAsC): Unspecialize Lexer::parseKeyword as templating over the character type reduces the amount of
code we need to generate and moves this task out of the Python script and into the C++ compiler.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@247463 268f45cc-cd09-0410-ab3c-d52691b4dbfc