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ladybird/Libraries/LibJS/Bytecode
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Andreas Kling 234203ed9b LibJS: Ensure deterministic ordering in scope analysis and codegen 
The scope collector uses HashMaps for identifier groups and variables,
which means their iteration order is non-deterministic. This causes
local variable indices and function declaration instantiation (FDI)
bytecode to vary between runs.

Fix this by sorting identifier group keys alphabetically before
assigning local variable indices, and sorting vars_to_initialize by
name before emitting FDI bytecode.

Also make register allocation deterministic by always picking the
lowest-numbered free register instead of whichever one happens to be
at the end of the free list.

This is preparation for bringing in a new source->bytecode pipeline
written in Rust. Checking for regressions is significantly easier
if we can expect identical output from both pipelines.
2026-02-24 09:39:42 +01:00
..
ASTCodegen.cpp LibJS: Fix export default of parenthesized named class expression 2026-02-21 19:27:03 +01:00
BasicBlock.cpp LibJS: Stop worrying about Instruction destructors 2025-11-21 09:46:03 +01:00
BasicBlock.h LibJS: Collapse handler/finalizer into single exception handler target 2026-02-09 16:35:39 +01:00
BuiltinAbstractOperationsEnabled.h LibJS: Introduce NativeJavaScriptBackedFunction 2025-11-30 11:54:54 +01:00
Builtins.cpp
Builtins.h LibJS: Skip generic call when using regexp builtins in StringPrototype 2025-12-13 13:51:12 -06:00
Bytecode.def LibJS: Remove AsyncIteratorClose bytecode op and C++ implementation 2026-02-12 11:37:43 +01:00
ClassBlueprint.h LibJS: Add ClassBlueprint data structures 2026-02-11 23:57:41 +01:00
Executable.cpp LibJS: Wire NewClass to ClassBlueprint 2026-02-11 23:57:41 +01:00
Executable.h LibJS: Add ClassBlueprint data structures 2026-02-11 23:57:41 +01:00
FormatOperand.h LibJS: Flatten Operand to 32-bit index in bytecode instruction stream 2025-12-09 21:44:13 -06:00
Generator.cpp LibJS: Ensure deterministic ordering in scope analysis and codegen 2026-02-24 09:39:42 +01:00
Generator.h LibJS: Consolidate TDZ check emission into Generator helper 2026-02-17 20:44:57 +01:00
IdentifierTable.cpp LibJS+LibWeb+WebContent: Port JS::PropertyKey to UTF-16 2025-08-05 07:07:15 -04:00
IdentifierTable.h LibJS: Give Interpreter a direct pointer to the identifier table 2025-10-07 23:50:51 +02:00
Instruction.cpp LibJS: Flatten Operand to 32-bit index in bytecode instruction stream 2025-12-09 21:44:13 -06:00
Instruction.h Meta: Reformat QtCreator file-listing script for readability 2026-02-23 13:10:03 +01:00
Interpreter.cpp LibJS: Check result of GlobalDeclarationInstantiation before evaluating 2026-02-19 12:02:50 +01:00
Interpreter.h LibJS: Make bytecode generation infallible 2026-02-12 11:37:43 +01:00
Label.cpp
Label.h LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT 2025-07-22 11:51:29 -04:00
Operand.h LibJS: Flatten Operand to 32-bit index in bytecode instruction stream 2025-12-09 21:44:13 -06:00
PropertyAccess.h LibJS: Take snapshot of prototype chain validity later in GetById 2026-01-09 09:16:50 +01:00
PropertyKeyTable.cpp LibJS: Cache fully-formed PropertyKeys in Executable 2025-12-11 14:34:45 -06:00
PropertyKeyTable.h LibJS+LibWeb: Add missing GC marking visits 2026-01-07 12:48:58 +01:00
PutKind.h LibJS: Rename Bytecode::Op::PropertyKind => Bytecode::PutKind 2025-10-11 20:08:58 +02:00
RegexTable.cpp LibJS: Don't rerun regexp optimizer every time a regexp literal is used 2025-12-12 11:43:35 -06:00
RegexTable.h LibJS: Don't rerun regexp optimizer every time a regexp literal is used 2025-12-12 11:43:35 -06:00
Register.h LibJS: Replace implicit environment stack with explicit registers 2026-02-09 16:35:39 +01:00
ScopedOperand.cpp LibJS: Flatten Operand to 32-bit index in bytecode instruction stream 2025-12-09 21:44:13 -06:00
ScopedOperand.h LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT 2025-07-22 11:51:29 -04:00
StringTable.cpp LibJS+LibWeb: Port interned bytecode strings to UTF-16 2025-08-14 10:27:08 +02:00
StringTable.h LibJS+LibWeb: Port interned bytecode strings to UTF-16 2025-08-14 10:27:08 +02:00