mirror of
https://github.com/luau-lang/luau.git
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76f67e0733
Type checker/autocomplete: * `Luau::autocomplete` no longer performs typechecking internally, make sure to run `Frontend::check` before performing autocomplete requests * Autocomplete string suggestions without "" are now only suggested inside the "" * Autocomplete suggestions now include `function (anonymous autofilled)` key with a full suggestion for the function expression (with arguments included) stored in `AutocompleteEntry::insertText` * `AutocompleteEntry::indexedWithSelf` is provided for function call suggestions made with `:` * Cyclic modules now see each other type exports as `any` to prevent memory use-after-free (similar to module return type) Runtime: * Updated inline/loop unroll cost model to better handle assignments (Fixes https://github.com/Roblox/luau/issues/978) * `math.noise` speed was improved by ~30% * `table.concat` speed was improved by ~5-7% * `tonumber` and `tostring` now have fastcall paths that execute ~1.5x and ~2.5x faster respectively (fixes #777) * Fixed crash in `luaL_typename` when index refers to a non-existing value * Fixed potential out of memory scenario when using `string.sub` or `string.char` in a loop * Fixed behavior of some fastcall builtins when called without arguments under -O2 to match original functions * Support for native code execution in VM is now enabled by default (note: native code still has to be generated explicitly) * `Codegen::compile` now accepts `CodeGen_OnlyNativeModules` flag. When set, only modules that have a `--!native` hot-comment at the top will be compiled to native code In our new typechecker: * Generic type packs are no longer considered to be variadic during unification * Timeout and cancellation now works in new solver * Fixed false positive errors around 'table' and 'function' type refinements * Table literals now use covariant unification rules. This is sound since literal has no type specified and has no aliases * Fixed issues with blocked types escaping the constraint solver * Fixed more places where error messages that should've been suppressed were still reported * Fixed errors when iterating over a top table type In our native code generation (jit): * 'DebugLuauAbortingChecks' flag is now supported on A64 * LOP_NEWCLOSURE has been translated to IR
267 lines
6.7 KiB
C++
267 lines
6.7 KiB
C++
// This file is part of the Luau programming language and is licensed under MIT License; see LICENSE.txt for details
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#pragma once
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#include "Luau/Bytecode.h"
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#include "Luau/Common.h"
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#include "Luau/IrData.h"
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namespace Luau
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{
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namespace CodeGen
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{
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struct IrBuilder;
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inline bool isJumpD(LuauOpcode op)
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{
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switch (op)
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{
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case LOP_JUMP:
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case LOP_JUMPIF:
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case LOP_JUMPIFNOT:
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case LOP_JUMPIFEQ:
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case LOP_JUMPIFLE:
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case LOP_JUMPIFLT:
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case LOP_JUMPIFNOTEQ:
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case LOP_JUMPIFNOTLE:
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case LOP_JUMPIFNOTLT:
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case LOP_FORNPREP:
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case LOP_FORNLOOP:
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case LOP_FORGPREP:
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case LOP_FORGLOOP:
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case LOP_FORGPREP_INEXT:
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case LOP_FORGPREP_NEXT:
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case LOP_JUMPBACK:
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case LOP_JUMPXEQKNIL:
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case LOP_JUMPXEQKB:
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case LOP_JUMPXEQKN:
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case LOP_JUMPXEQKS:
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return true;
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default:
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return false;
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}
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}
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inline bool isSkipC(LuauOpcode op)
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{
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switch (op)
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{
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case LOP_LOADB:
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return true;
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default:
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return false;
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}
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}
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inline bool isFastCall(LuauOpcode op)
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{
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switch (op)
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{
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case LOP_FASTCALL:
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case LOP_FASTCALL1:
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case LOP_FASTCALL2:
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case LOP_FASTCALL2K:
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return true;
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default:
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return false;
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}
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}
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inline int getJumpTarget(uint32_t insn, uint32_t pc)
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{
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LuauOpcode op = LuauOpcode(LUAU_INSN_OP(insn));
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if (isJumpD(op))
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return int(pc + LUAU_INSN_D(insn) + 1);
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else if (isFastCall(op))
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return int(pc + LUAU_INSN_C(insn) + 2);
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else if (isSkipC(op) && LUAU_INSN_C(insn))
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return int(pc + LUAU_INSN_C(insn) + 1);
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else if (op == LOP_JUMPX)
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return int(pc + LUAU_INSN_E(insn) + 1);
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else
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return -1;
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}
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inline bool isBlockTerminator(IrCmd cmd)
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{
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switch (cmd)
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{
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case IrCmd::JUMP:
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case IrCmd::JUMP_IF_TRUTHY:
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case IrCmd::JUMP_IF_FALSY:
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case IrCmd::JUMP_EQ_TAG:
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case IrCmd::JUMP_EQ_INT:
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case IrCmd::JUMP_LT_INT:
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case IrCmd::JUMP_GE_UINT:
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case IrCmd::JUMP_EQ_POINTER:
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case IrCmd::JUMP_CMP_NUM:
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case IrCmd::JUMP_CMP_ANY:
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case IrCmd::JUMP_SLOT_MATCH:
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case IrCmd::RETURN:
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case IrCmd::FORGLOOP:
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case IrCmd::FORGLOOP_FALLBACK:
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case IrCmd::FORGPREP_XNEXT_FALLBACK:
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case IrCmd::FALLBACK_FORGPREP:
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return true;
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default:
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break;
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}
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return false;
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}
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inline bool isNonTerminatingJump(IrCmd cmd)
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{
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switch (cmd)
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{
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case IrCmd::TRY_NUM_TO_INDEX:
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case IrCmd::TRY_CALL_FASTGETTM:
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case IrCmd::CHECK_FASTCALL_RES:
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case IrCmd::CHECK_TAG:
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case IrCmd::CHECK_READONLY:
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case IrCmd::CHECK_NO_METATABLE:
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case IrCmd::CHECK_SAFE_ENV:
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case IrCmd::CHECK_ARRAY_SIZE:
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case IrCmd::CHECK_SLOT_MATCH:
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case IrCmd::CHECK_NODE_NO_NEXT:
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return true;
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default:
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break;
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}
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return false;
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}
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inline bool hasResult(IrCmd cmd)
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{
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switch (cmd)
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{
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case IrCmd::LOAD_TAG:
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case IrCmd::LOAD_POINTER:
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case IrCmd::LOAD_DOUBLE:
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case IrCmd::LOAD_INT:
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case IrCmd::LOAD_TVALUE:
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case IrCmd::LOAD_NODE_VALUE_TV:
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case IrCmd::LOAD_ENV:
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case IrCmd::GET_ARR_ADDR:
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case IrCmd::GET_SLOT_NODE_ADDR:
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case IrCmd::GET_HASH_NODE_ADDR:
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case IrCmd::GET_CLOSURE_UPVAL_ADDR:
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case IrCmd::ADD_INT:
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case IrCmd::SUB_INT:
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case IrCmd::ADD_NUM:
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case IrCmd::SUB_NUM:
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case IrCmd::MUL_NUM:
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case IrCmd::DIV_NUM:
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case IrCmd::MOD_NUM:
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case IrCmd::MIN_NUM:
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case IrCmd::MAX_NUM:
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case IrCmd::UNM_NUM:
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case IrCmd::FLOOR_NUM:
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case IrCmd::CEIL_NUM:
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case IrCmd::ROUND_NUM:
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case IrCmd::SQRT_NUM:
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case IrCmd::ABS_NUM:
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case IrCmd::NOT_ANY:
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case IrCmd::TABLE_LEN:
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case IrCmd::STRING_LEN:
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case IrCmd::NEW_TABLE:
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case IrCmd::DUP_TABLE:
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case IrCmd::TRY_NUM_TO_INDEX:
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case IrCmd::TRY_CALL_FASTGETTM:
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case IrCmd::INT_TO_NUM:
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case IrCmd::UINT_TO_NUM:
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case IrCmd::NUM_TO_INT:
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case IrCmd::NUM_TO_UINT:
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case IrCmd::SUBSTITUTE:
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case IrCmd::INVOKE_FASTCALL:
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case IrCmd::BITAND_UINT:
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case IrCmd::BITXOR_UINT:
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case IrCmd::BITOR_UINT:
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case IrCmd::BITNOT_UINT:
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case IrCmd::BITLSHIFT_UINT:
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case IrCmd::BITRSHIFT_UINT:
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case IrCmd::BITARSHIFT_UINT:
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case IrCmd::BITLROTATE_UINT:
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case IrCmd::BITRROTATE_UINT:
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case IrCmd::BITCOUNTLZ_UINT:
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case IrCmd::BITCOUNTRZ_UINT:
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case IrCmd::INVOKE_LIBM:
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case IrCmd::GET_TYPE:
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case IrCmd::GET_TYPEOF:
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case IrCmd::NEWCLOSURE:
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case IrCmd::FINDUPVAL:
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return true;
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default:
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break;
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}
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return false;
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}
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inline bool hasSideEffects(IrCmd cmd)
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{
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if (cmd == IrCmd::INVOKE_FASTCALL)
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return true;
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// Instructions that don't produce a result most likely have other side-effects to make them useful
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// Right now, a full switch would mirror the 'hasResult' function, so we use this simple condition
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return !hasResult(cmd);
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}
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inline bool isPseudo(IrCmd cmd)
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{
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// Instructions that are used for internal needs and are not a part of final lowering
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return cmd == IrCmd::NOP || cmd == IrCmd::SUBSTITUTE;
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}
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IrValueKind getCmdValueKind(IrCmd cmd);
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bool isGCO(uint8_t tag);
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// Manually add or remove use of an operand
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void addUse(IrFunction& function, IrOp op);
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void removeUse(IrFunction& function, IrOp op);
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// Remove a single instruction
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void kill(IrFunction& function, IrInst& inst);
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// Remove a range of instructions
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void kill(IrFunction& function, uint32_t start, uint32_t end);
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// Remove a block, including all instructions inside
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void kill(IrFunction& function, IrBlock& block);
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// Replace a single operand and update use counts (can cause chain removal of dead code)
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void replace(IrFunction& function, IrOp& original, IrOp replacement);
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// Replace a single instruction
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// Target instruction index instead of reference is used to handle introduction of a new block terminator
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void replace(IrFunction& function, IrBlock& block, uint32_t instIdx, IrInst replacement);
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// Replace instruction with a different value (using IrCmd::SUBSTITUTE)
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void substitute(IrFunction& function, IrInst& inst, IrOp replacement);
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// Replace instruction arguments that point to substitutions with target values
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void applySubstitutions(IrFunction& function, IrOp& op);
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void applySubstitutions(IrFunction& function, IrInst& inst);
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// Compare numbers using IR condition value
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bool compare(double a, double b, IrCondition cond);
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// Perform constant folding on instruction at index
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// For most instructions, successful folding results in a IrCmd::SUBSTITUTE
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// But it can also be successful on conditional control-flow, replacing it with an unconditional IrCmd::JUMP
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void foldConstants(IrBuilder& build, IrFunction& function, IrBlock& block, uint32_t instIdx);
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uint32_t getNativeContextOffset(int bfid);
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// Cleans up blocks that were created with no users
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void killUnusedBlocks(IrFunction& function);
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} // namespace CodeGen
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} // namespace Luau
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