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Inline bit set constants

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This commit is contained in:
Rerumu 2022-06-29 23:06:37 -04:00
parent 92b692160d
commit ecc0cad494
1 changed files with 13 additions and 18 deletions
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31
codegen/luau/runtime/runtime.lua
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@ -1,10 +1,5 @@
local module = {}
local MAX_UNSIGNED = 0xffffffff
local MAX_SIGNED = 0x7fffffff
local BIT_SET_27 = 0x8000000
local BIT_SET_32 = 0x100000000
local to_u32 = bit32.band
local bit_or = bit32.bor
@ -16,12 +11,12 @@ local num_from_u32 = I64.from_u32
local num_into_u32 = I64.into_u32
local function to_i32(num)
if num > MAX_SIGNED then
num = num - BIT_SET_32
end
if num >= 0x80000000 then
return num - 0x100000000
else
return num
end
end
local function no_op(num)
return num
@ -72,7 +67,7 @@ do
end
function mul.i32(lhs, rhs)
if (lhs + rhs) < BIT_SET_27 then
if (lhs + rhs) < 0x8000000 then
return to_u32(lhs * rhs)
else
local a16 = bit_rshift(lhs, 16)
@ -141,10 +136,10 @@ do
local packed = string_pack("<d", rhs)
local sign = string_byte(packed, 8)
if sign < 0x80 then
return math_abs(lhs)
else
if sign >= 0x80 then
return -math_abs(lhs)
else
return math_abs(lhs)
end
end
@ -406,8 +401,8 @@ do
end
function extend.i64_i32(num)
if num > MAX_SIGNED then
local temp = num_from_u32(-num + BIT_SET_32, 0)
if num >= 0x80000000 then
local temp = num_from_u32(-num + 0x100000000, 0)
return num_negate(temp)
else
@ -587,7 +582,7 @@ do
if data_1 >= 0x80 then
data_1 = to_u32(data_1 - 0x100)
data_2 = MAX_UNSIGNED
data_2 = 0xFFFFFFFF
else
data_2 = 0
end
@ -616,7 +611,7 @@ do
if data_1 >= 0x8000 then
data_1 = to_u32(data_1 - 0x10000)
data_2 = MAX_UNSIGNED
data_2 = 0xFFFFFFFF
else
data_2 = 0
end
@ -657,7 +652,7 @@ do
if data_1 >= 0x80000000 then
data_1 = to_u32(data_1 - 0x100000000)
data_2 = MAX_UNSIGNED
data_2 = 0xFFFFFFFF
else
data_2 = 0
end