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LibJS/Bytecode: Don't reparse regular expressions on instantiation

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The RegExpLiteral AST node already has the parsed regex::Parser::Result
so let's plumb that over to the bytecode executable instead of reparsing
the regex every time NewRegExp is executed.

~12% speed-up on language/literals/regexp/S7.8.5_A2.1_T2.js in test262.
This commit is contained in:
Andreas Kling 2023-07-13 10:49:07 +02:00
parent a098f38cab
commit c0f985ffcf
9 changed files with 109 additions and 4 deletions
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2
Userland/Libraries/LibJS/Bytecode/Executable.h
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@ -11,6 +11,7 @@
#include <AK/WeakPtr.h>
#include <LibJS/Bytecode/BasicBlock.h>
#include <LibJS/Bytecode/IdentifierTable.h>
#include <LibJS/Bytecode/RegexTable.h>
#include <LibJS/Bytecode/StringTable.h>
namespace JS::Bytecode {
@ -32,6 +33,7 @@ struct Executable {
Vector<NonnullOwnPtr<BasicBlock>> basic_blocks;
NonnullOwnPtr<StringTable> string_table;
NonnullOwnPtr<IdentifierTable> identifier_table;
NonnullOwnPtr<RegexTable> regex_table;
size_t number_of_registers { 0 };
bool is_strict_mode { false };