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ladybird/Libraries/LibJS/Bytecode
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Andreas Kling 9f822345bf LibJS: Flatten Operand to 32-bit index in bytecode instruction stream 
While we're in the bytecode compiler, we want to know which type of
Operand we're dealing with, but once we've generated the bytecode
stream, we only ever need its index.

This patch simplifies Operand by removing the aarch64 bitfield hacks
and makes it 32-bit on all platforms. We keep 3 type bits in the high
bits of the index while compiling, and then zero them out when
flattening the final bytecode stream.

This makes bytecode more compact on x86_64, and avoids bit twiddling
on aarch64. Everyone wins something!

When stringifying bytecode for debugging output, we now have an API in
Executable that can look at a raw operand index and tell you what type
of operand it was, based on known quantities of each type in the stack
frame.
2025-12-09 21:44:13 -06:00
..
ASTCodegen.cpp LibJS: Introduce NativeJavaScriptBackedFunction 2025-11-30 11:54:54 +01:00
BasicBlock.cpp LibJS: Stop worrying about Instruction destructors 2025-11-21 09:46:03 +01:00
BasicBlock.h Everywhere: Slap some [[clang::lifetimebound]] where appropriate 2025-09-01 11:11:38 +02:00
BuiltinAbstractOperationsEnabled.h LibJS: Introduce NativeJavaScriptBackedFunction 2025-11-30 11:54:54 +01:00
Builtins.cpp Everywhere: Hoist the Libraries folder to the top-level 2024-11-10 12:50:45 +01:00
Builtins.h LibJS: Avoid function call if @@hasInstance is default implementation 2025-10-13 17:15:44 +02:00
Bytecode.def LibJS: Replace Array.fromAsync with a native JavaScript implementation 2025-11-30 11:54:54 +01:00
CodeGenerationError.cpp Everywhere: Hoist the Libraries folder to the top-level 2024-11-10 12:50:45 +01:00
CodeGenerationError.h LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT 2025-07-22 11:51:29 -04:00
Executable.cpp LibJS: Flatten Operand to 32-bit index in bytecode instruction stream 2025-12-09 21:44:13 -06:00
Executable.h LibJS: Flatten Operand to 32-bit index in bytecode instruction stream 2025-12-09 21:44:13 -06:00
FormatOperand.h LibJS: Flatten Operand to 32-bit index in bytecode instruction stream 2025-12-09 21:44:13 -06:00
Generator.cpp LibJS: Replace Array.fromAsync with a native JavaScript implementation 2025-11-30 11:54:54 +01:00
Generator.h LibJS: Introduce NativeJavaScriptBackedFunction 2025-11-30 11:54:54 +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 LibJS: Remove unused InstructionStreamIterator::source_range() 2025-11-21 09:46:03 +01:00
Interpreter.cpp LibJS: Flatten Operand to 32-bit index in bytecode instruction stream 2025-12-09 21:44:13 -06:00
Interpreter.h LibJS: Introduce VM::the() and use it instead of caching VM pointer 2025-12-09 11:58:39 -06:00
Label.cpp Everywhere: Hoist the Libraries folder to the top-level 2024-11-10 12:50:45 +01:00
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: Track current shape dictionary generation in PropertyLookupCache 2025-10-24 15:35:04 +02:00
PutKind.h LibJS: Rename Bytecode::Op::PropertyKind => Bytecode::PutKind 2025-10-11 20:08:58 +02:00
RegexTable.cpp Everywhere: Hoist the Libraries folder to the top-level 2024-11-10 12:50:45 +01:00
RegexTable.h LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT 2025-07-22 11:51:29 -04:00
Register.h LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT 2025-07-22 11:51:29 -04:00
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