mirror of
https://github.com/luau-lang/luau.git
synced 2024-12-13 21:40:43 +00:00
c33700e473
* Reduce the stack utilization of type checking.
* Improve the error message that's reported when a delimiting comma is
missing from a table literal. eg
```lua
local t = {
first = 1
second = 2
}```
142 lines
3.6 KiB
C++
142 lines
3.6 KiB
C++
// This file is part of the Luau programming language and is licensed under MIT License; see LICENSE.txt for details
|
|
#pragma once
|
|
|
|
#include "Luau/Common.h"
|
|
#include "Luau/RegisterX64.h"
|
|
|
|
#include <stdint.h>
|
|
|
|
namespace Luau
|
|
{
|
|
namespace CodeGen
|
|
{
|
|
|
|
enum class CategoryX64 : uint8_t
|
|
{
|
|
reg,
|
|
mem,
|
|
imm,
|
|
};
|
|
|
|
struct OperandX64
|
|
{
|
|
constexpr OperandX64(RegisterX64 reg)
|
|
: cat(CategoryX64::reg)
|
|
, index(noreg)
|
|
, base(reg)
|
|
, memSize(SizeX64::none)
|
|
, scale(1)
|
|
, imm(0)
|
|
{
|
|
}
|
|
|
|
constexpr OperandX64(int32_t imm)
|
|
: cat(CategoryX64::imm)
|
|
, index(noreg)
|
|
, base(noreg)
|
|
, memSize(SizeX64::none)
|
|
, scale(1)
|
|
, imm(imm)
|
|
{
|
|
}
|
|
|
|
constexpr explicit OperandX64(SizeX64 size, RegisterX64 index, uint8_t scale, RegisterX64 base, int32_t disp)
|
|
: cat(CategoryX64::mem)
|
|
, index(index)
|
|
, base(base)
|
|
, memSize(size)
|
|
, scale(scale)
|
|
, imm(disp)
|
|
{
|
|
}
|
|
|
|
// Fields are carefully placed to make this struct fit into an 8 byte register
|
|
CategoryX64 cat;
|
|
RegisterX64 index;
|
|
RegisterX64 base;
|
|
SizeX64 memSize : 4;
|
|
uint8_t scale : 4;
|
|
int32_t imm;
|
|
|
|
constexpr OperandX64 operator[](OperandX64&& addr) const
|
|
{
|
|
LUAU_ASSERT(cat == CategoryX64::mem);
|
|
LUAU_ASSERT(index == noreg && scale == 1 && base == noreg && imm == 0);
|
|
LUAU_ASSERT(addr.memSize == SizeX64::none);
|
|
|
|
addr.cat = CategoryX64::mem;
|
|
addr.memSize = memSize;
|
|
return addr;
|
|
}
|
|
};
|
|
|
|
constexpr OperandX64 addr{SizeX64::none, noreg, 1, noreg, 0};
|
|
constexpr OperandX64 byte{SizeX64::byte, noreg, 1, noreg, 0};
|
|
constexpr OperandX64 word{SizeX64::word, noreg, 1, noreg, 0};
|
|
constexpr OperandX64 dword{SizeX64::dword, noreg, 1, noreg, 0};
|
|
constexpr OperandX64 qword{SizeX64::qword, noreg, 1, noreg, 0};
|
|
constexpr OperandX64 xmmword{SizeX64::xmmword, noreg, 1, noreg, 0};
|
|
constexpr OperandX64 ymmword{SizeX64::ymmword, noreg, 1, noreg, 0};
|
|
|
|
constexpr OperandX64 operator*(RegisterX64 reg, uint8_t scale)
|
|
{
|
|
if (scale == 1)
|
|
return OperandX64(reg);
|
|
|
|
LUAU_ASSERT(scale == 1 || scale == 2 || scale == 4 || scale == 8);
|
|
LUAU_ASSERT(reg.index != 0b100 && "can't scale SP");
|
|
|
|
return OperandX64(SizeX64::none, reg, scale, noreg, 0);
|
|
}
|
|
|
|
constexpr OperandX64 operator+(RegisterX64 reg, int32_t disp)
|
|
{
|
|
return OperandX64(SizeX64::none, noreg, 1, reg, disp);
|
|
}
|
|
|
|
constexpr OperandX64 operator-(RegisterX64 reg, int32_t disp)
|
|
{
|
|
return OperandX64(SizeX64::none, noreg, 1, reg, -disp);
|
|
}
|
|
|
|
constexpr OperandX64 operator+(RegisterX64 base, RegisterX64 index)
|
|
{
|
|
LUAU_ASSERT(index.index != 4 && "sp cannot be used as index");
|
|
LUAU_ASSERT(base.size == index.size);
|
|
|
|
return OperandX64(SizeX64::none, index, 1, base, 0);
|
|
}
|
|
|
|
constexpr OperandX64 operator+(OperandX64 op, int32_t disp)
|
|
{
|
|
LUAU_ASSERT(op.cat == CategoryX64::mem);
|
|
LUAU_ASSERT(op.memSize == SizeX64::none);
|
|
|
|
op.imm += disp;
|
|
return op;
|
|
}
|
|
|
|
constexpr OperandX64 operator+(OperandX64 op, RegisterX64 base)
|
|
{
|
|
LUAU_ASSERT(op.cat == CategoryX64::mem);
|
|
LUAU_ASSERT(op.memSize == SizeX64::none);
|
|
LUAU_ASSERT(op.base == noreg);
|
|
LUAU_ASSERT(op.index == noreg || op.index.size == base.size);
|
|
|
|
op.base = base;
|
|
return op;
|
|
}
|
|
|
|
constexpr OperandX64 operator+(RegisterX64 base, OperandX64 op)
|
|
{
|
|
LUAU_ASSERT(op.cat == CategoryX64::mem);
|
|
LUAU_ASSERT(op.memSize == SizeX64::none);
|
|
LUAU_ASSERT(op.base == noreg);
|
|
LUAU_ASSERT(op.index == noreg || op.index.size == base.size);
|
|
|
|
op.base = base;
|
|
return op;
|
|
}
|
|
|
|
} // namespace CodeGen
|
|
} // namespace Luau
|