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Remove unneeded multiplication checks

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Rerumu 2022-07-02 01:59:38 -04:00
parent bdb4420292
commit 577fbf5926
1 changed files with 2 additions and 16 deletions
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18
codegen/luau/runtime/numeric.lua
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@ -127,21 +127,12 @@ function Numeric.multiply(lhs, rhs)
return NUM_ZERO return NUM_ZERO
end end
local has_negative
has_negative, lhs, rhs = set_absolute(lhs, rhs)
-- If both longs are small, use float multiplication -- If both longs are small, use float multiplication
if num_is_less_unsigned(lhs, NUM_BIT_26) and num_is_less_unsigned(rhs, NUM_BIT_26) then if num_is_less_unsigned(lhs, NUM_BIT_26) and num_is_less_unsigned(rhs, NUM_BIT_26) then
local data_l_1, _ = into_u32(lhs) local data_l_1, _ = into_u32(lhs)
local data_r_1, _ = into_u32(rhs) local data_r_1, _ = into_u32(rhs)
local result = from_u64(data_l_1 * data_r_1)
if has_negative then return from_u64(data_l_1 * data_r_1)
result = num_negate(result)
end
return result
end end
-- Divide each long into 4 chunks of 16 bits, and then add up 4x4 products. -- Divide each long into 4 chunks of 16 bits, and then add up 4x4 products.
@ -187,13 +178,8 @@ function Numeric.multiply(lhs, rhs)
local data_1 = bit_replace(c00, c16, 16, 16) local data_1 = bit_replace(c00, c16, 16, 16)
local data_2 = bit_replace(c32, c48, 16, 16) local data_2 = bit_replace(c32, c48, 16, 16)
local result = from_u32(data_1, data_2)
if has_negative then return from_u32(data_1, data_2)
result = num_negate(result)
end
return result
end end
local function get_approx_delta(rem, rhs) local function get_approx_delta(rem, rhs)