mirror of
https://github.com/walterschell/Lua.git
synced 2024-11-15 12:15:43 +08:00
450 lines
13 KiB
Lua
450 lines
13 KiB
Lua
-- $Id: testes/code.lua $
|
|
-- See Copyright Notice in file all.lua
|
|
|
|
if T==nil then
|
|
(Message or print)('\n >>> testC not active: skipping opcode tests <<<\n')
|
|
return
|
|
end
|
|
print "testing code generation and optimizations"
|
|
|
|
-- to test constant propagation
|
|
local k0aux <const> = 0
|
|
local k0 <const> = k0aux
|
|
local k1 <const> = 1
|
|
local k3 <const> = 3
|
|
local k6 <const> = k3 + (k3 << k0)
|
|
local kFF0 <const> = 0xFF0
|
|
local k3_78 <const> = 3.78
|
|
local x, k3_78_4 <const> = 10, k3_78 / 4
|
|
assert(x == 10)
|
|
|
|
local kx <const> = "x"
|
|
|
|
local kTrue <const> = true
|
|
local kFalse <const> = false
|
|
|
|
local kNil <const> = nil
|
|
|
|
-- this code gave an error for the code checker
|
|
do
|
|
local function f (a)
|
|
for k,v,w in a do end
|
|
end
|
|
end
|
|
|
|
|
|
-- testing reuse in constant table
|
|
local function checkKlist (func, list)
|
|
local k = T.listk(func)
|
|
assert(#k == #list)
|
|
for i = 1, #k do
|
|
assert(k[i] == list[i] and math.type(k[i]) == math.type(list[i]))
|
|
end
|
|
end
|
|
|
|
local function foo ()
|
|
local a
|
|
a = k3;
|
|
a = 0; a = 0.0; a = -7 + 7
|
|
a = k3_78/4; a = k3_78_4
|
|
a = -k3_78/4; a = k3_78/4; a = -3.78/4
|
|
a = -3.79/4; a = 0.0; a = -0;
|
|
a = k3; a = 3.0; a = 3; a = 3.0
|
|
end
|
|
|
|
checkKlist(foo, {3.78/4, -3.78/4, -3.79/4})
|
|
|
|
|
|
foo = function (f, a)
|
|
f(100 * 1000)
|
|
f(100.0 * 1000)
|
|
f(-100 * 1000)
|
|
f(-100 * 1000.0)
|
|
f(100000)
|
|
f(100000.0)
|
|
f(-100000)
|
|
f(-100000.0)
|
|
end
|
|
|
|
checkKlist(foo, {100000, 100000.0, -100000, -100000.0})
|
|
|
|
|
|
-- floats x integers
|
|
foo = function (t, a)
|
|
t[a] = 1; t[a] = 1.0
|
|
t[a] = 1; t[a] = 1.0
|
|
t[a] = 2; t[a] = 2.0
|
|
t[a] = 0; t[a] = 0.0
|
|
t[a] = 1; t[a] = 1.0
|
|
t[a] = 2; t[a] = 2.0
|
|
t[a] = 0; t[a] = 0.0
|
|
end
|
|
|
|
checkKlist(foo, {1, 1.0, 2, 2.0, 0, 0.0})
|
|
|
|
|
|
-- testing opcodes
|
|
|
|
-- check that 'f' opcodes match '...'
|
|
local function check (f, ...)
|
|
local arg = {...}
|
|
local c = T.listcode(f)
|
|
for i=1, #arg do
|
|
local opcode = string.match(c[i], "%u%w+")
|
|
-- print(arg[i], opcode)
|
|
assert(arg[i] == opcode)
|
|
end
|
|
assert(c[#arg+2] == undef)
|
|
end
|
|
|
|
|
|
-- check that 'f' opcodes match '...' and that 'f(p) == r'.
|
|
local function checkR (f, p, r, ...)
|
|
local r1 = f(p)
|
|
assert(r == r1 and math.type(r) == math.type(r1))
|
|
check(f, ...)
|
|
end
|
|
|
|
|
|
-- check that 'a' and 'b' has the same opcodes
|
|
local function checkequal (a, b)
|
|
a = T.listcode(a)
|
|
b = T.listcode(b)
|
|
assert(#a == #b)
|
|
for i = 1, #a do
|
|
a[i] = string.gsub(a[i], '%b()', '') -- remove line number
|
|
b[i] = string.gsub(b[i], '%b()', '') -- remove line number
|
|
assert(a[i] == b[i])
|
|
end
|
|
end
|
|
|
|
|
|
-- some basic instructions
|
|
check(function () -- function does not create upvalues
|
|
(function () end){f()}
|
|
end, 'CLOSURE', 'NEWTABLE', 'EXTRAARG', 'GETTABUP', 'CALL',
|
|
'SETLIST', 'CALL', 'RETURN0')
|
|
|
|
check(function (x) -- function creates upvalues
|
|
(function () return x end){f()}
|
|
end, 'CLOSURE', 'NEWTABLE', 'EXTRAARG', 'GETTABUP', 'CALL',
|
|
'SETLIST', 'CALL', 'RETURN')
|
|
|
|
|
|
-- sequence of LOADNILs
|
|
check(function ()
|
|
local kNil <const> = nil
|
|
local a,b,c
|
|
local d; local e;
|
|
local f,g,h;
|
|
d = nil; d=nil; b=nil; a=kNil; c=nil;
|
|
end, 'LOADNIL', 'RETURN0')
|
|
|
|
check(function ()
|
|
local a,b,c,d = 1,1,1,1
|
|
d=nil;c=nil;b=nil;a=nil
|
|
end, 'LOADI', 'LOADI', 'LOADI', 'LOADI', 'LOADNIL', 'RETURN0')
|
|
|
|
do
|
|
local a,b,c,d = 1,1,1,1
|
|
d=nil;c=nil;b=nil;a=nil
|
|
assert(a == nil and b == nil and c == nil and d == nil)
|
|
end
|
|
|
|
|
|
-- single return
|
|
check (function (a,b,c) return a end, 'RETURN1')
|
|
|
|
|
|
-- infinite loops
|
|
check(function () while kTrue do local a = -1 end end,
|
|
'LOADI', 'JMP', 'RETURN0')
|
|
|
|
check(function () while 1 do local a = -1 end end,
|
|
'LOADI', 'JMP', 'RETURN0')
|
|
|
|
check(function () repeat local x = 1 until true end,
|
|
'LOADI', 'RETURN0')
|
|
|
|
|
|
-- concat optimization
|
|
check(function (a,b,c,d) return a..b..c..d end,
|
|
'MOVE', 'MOVE', 'MOVE', 'MOVE', 'CONCAT', 'RETURN1')
|
|
|
|
-- not
|
|
check(function () return not not nil end, 'LOADFALSE', 'RETURN1')
|
|
check(function () return not not kFalse end, 'LOADFALSE', 'RETURN1')
|
|
check(function () return not not true end, 'LOADTRUE', 'RETURN1')
|
|
check(function () return not not k3 end, 'LOADTRUE', 'RETURN1')
|
|
|
|
-- direct access to locals
|
|
check(function ()
|
|
local a,b,c,d
|
|
a = b*a
|
|
c.x, a[b] = -((a + d/b - a[b]) ^ a.x), b
|
|
end,
|
|
'LOADNIL',
|
|
'MUL', 'MMBIN',
|
|
'DIV', 'MMBIN', 'ADD', 'MMBIN', 'GETTABLE', 'SUB', 'MMBIN',
|
|
'GETFIELD', 'POW', 'MMBIN', 'UNM', 'SETTABLE', 'SETFIELD', 'RETURN0')
|
|
|
|
|
|
-- direct access to constants
|
|
check(function ()
|
|
local a,b
|
|
local c = kNil
|
|
a[kx] = 3.2
|
|
a.x = b
|
|
a[b] = 'x'
|
|
end,
|
|
'LOADNIL', 'SETFIELD', 'SETFIELD', 'SETTABLE', 'RETURN0')
|
|
|
|
-- "get/set table" with numeric indices
|
|
check(function (a)
|
|
local k255 <const> = 255
|
|
a[1] = a[100]
|
|
a[k255] = a[256]
|
|
a[256] = 5
|
|
end,
|
|
'GETI', 'SETI',
|
|
'LOADI', 'GETTABLE', 'SETI',
|
|
'LOADI', 'SETTABLE', 'RETURN0')
|
|
|
|
check(function ()
|
|
local a,b
|
|
a = a - a
|
|
b = a/a
|
|
b = 5-4
|
|
end,
|
|
'LOADNIL', 'SUB', 'MMBIN', 'DIV', 'MMBIN', 'LOADI', 'RETURN0')
|
|
|
|
check(function ()
|
|
local a,b
|
|
a[kTrue] = false
|
|
end,
|
|
'LOADNIL', 'LOADTRUE', 'SETTABLE', 'RETURN0')
|
|
|
|
|
|
-- equalities
|
|
checkR(function (a) if a == 1 then return 2 end end, 1, 2,
|
|
'EQI', 'JMP', 'LOADI', 'RETURN1')
|
|
|
|
checkR(function (a) if -4.0 == a then return 2 end end, -4, 2,
|
|
'EQI', 'JMP', 'LOADI', 'RETURN1')
|
|
|
|
checkR(function (a) if a == "hi" then return 2 end end, 10, nil,
|
|
'EQK', 'JMP', 'LOADI', 'RETURN1')
|
|
|
|
checkR(function (a) if a == 10000 then return 2 end end, 1, nil,
|
|
'EQK', 'JMP', 'LOADI', 'RETURN1') -- number too large
|
|
|
|
checkR(function (a) if -10000 == a then return 2 end end, -10000, 2,
|
|
'EQK', 'JMP', 'LOADI', 'RETURN1') -- number too large
|
|
|
|
-- comparisons
|
|
|
|
checkR(function (a) if -10 <= a then return 2 end end, -10, 2,
|
|
'GEI', 'JMP', 'LOADI', 'RETURN1')
|
|
|
|
checkR(function (a) if 128.0 > a then return 2 end end, 129, nil,
|
|
'LTI', 'JMP', 'LOADI', 'RETURN1')
|
|
|
|
checkR(function (a) if -127.0 < a then return 2 end end, -127, nil,
|
|
'GTI', 'JMP', 'LOADI', 'RETURN1')
|
|
|
|
checkR(function (a) if 10 < a then return 2 end end, 11, 2,
|
|
'GTI', 'JMP', 'LOADI', 'RETURN1')
|
|
|
|
checkR(function (a) if 129 < a then return 2 end end, 130, 2,
|
|
'LOADI', 'LT', 'JMP', 'LOADI', 'RETURN1')
|
|
|
|
checkR(function (a) if a >= 23.0 then return 2 end end, 25, 2,
|
|
'GEI', 'JMP', 'LOADI', 'RETURN1')
|
|
|
|
checkR(function (a) if a >= 23.1 then return 2 end end, 0, nil,
|
|
'LOADK', 'LE', 'JMP', 'LOADI', 'RETURN1')
|
|
|
|
checkR(function (a) if a > 2300.0 then return 2 end end, 0, nil,
|
|
'LOADF', 'LT', 'JMP', 'LOADI', 'RETURN1')
|
|
|
|
|
|
-- constant folding
|
|
local function checkK (func, val)
|
|
check(func, 'LOADK', 'RETURN1')
|
|
checkKlist(func, {val})
|
|
assert(func() == val)
|
|
end
|
|
|
|
local function checkI (func, val)
|
|
check(func, 'LOADI', 'RETURN1')
|
|
checkKlist(func, {})
|
|
assert(func() == val)
|
|
end
|
|
|
|
local function checkF (func, val)
|
|
check(func, 'LOADF', 'RETURN1')
|
|
checkKlist(func, {})
|
|
assert(func() == val)
|
|
end
|
|
|
|
checkF(function () return 0.0 end, 0.0)
|
|
checkI(function () return k0 end, 0)
|
|
checkI(function () return -k0//1 end, 0)
|
|
checkK(function () return 3^-1 end, 1/3)
|
|
checkK(function () return (1 + 1)^(50 + 50) end, 2^100)
|
|
checkK(function () return (-2)^(31 - 2) end, -0x20000000 + 0.0)
|
|
checkF(function () return (-k3^0 + 5) // 3.0 end, 1.0)
|
|
checkI(function () return -k3 % 5 end, 2)
|
|
checkF(function () return -((2.0^8 + -(-1)) % 8)/2 * 4 - 3 end, -5.0)
|
|
checkF(function () return -((2^8 + -(-1)) % 8)//2 * 4 - 3 end, -7.0)
|
|
checkI(function () return 0xF0.0 | 0xCC.0 ~ 0xAA & 0xFD end, 0xF4)
|
|
checkI(function () return ~(~kFF0 | kFF0) end, 0)
|
|
checkI(function () return ~~-1024.0 end, -1024)
|
|
checkI(function () return ((100 << k6) << -4) >> 2 end, 100)
|
|
|
|
-- borders around MAXARG_sBx ((((1 << 17) - 1) >> 1) == 65535)
|
|
local a = 17; local sbx = ((1 << a) - 1) >> 1 -- avoid folding
|
|
local border <const> = 65535
|
|
checkI(function () return border end, sbx)
|
|
checkI(function () return -border end, -sbx)
|
|
checkI(function () return border + 1 end, sbx + 1)
|
|
checkK(function () return border + 2 end, sbx + 2)
|
|
checkK(function () return -(border + 1) end, -(sbx + 1))
|
|
|
|
local border <const> = 65535.0
|
|
checkF(function () return border end, sbx + 0.0)
|
|
checkF(function () return -border end, -sbx + 0.0)
|
|
checkF(function () return border + 1 end, (sbx + 1.0))
|
|
checkK(function () return border + 2 end, (sbx + 2.0))
|
|
checkK(function () return -(border + 1) end, -(sbx + 1.0))
|
|
|
|
|
|
-- immediate operands
|
|
checkR(function (x) return x + k1 end, 10, 11, 'ADDI', 'MMBINI', 'RETURN1')
|
|
checkR(function (x) return x - 127 end, 10, -117, 'ADDI', 'MMBINI', 'RETURN1')
|
|
checkR(function (x) return 128 + x end, 0.0, 128.0,
|
|
'ADDI', 'MMBINI', 'RETURN1')
|
|
checkR(function (x) return x * -127 end, -1.0, 127.0,
|
|
'MULK', 'MMBINK', 'RETURN1')
|
|
checkR(function (x) return 20 * x end, 2, 40, 'MULK', 'MMBINK', 'RETURN1')
|
|
checkR(function (x) return x ^ -2 end, 2, 0.25, 'POWK', 'MMBINK', 'RETURN1')
|
|
checkR(function (x) return x / 40 end, 40, 1.0, 'DIVK', 'MMBINK', 'RETURN1')
|
|
checkR(function (x) return x // 1 end, 10.0, 10.0,
|
|
'IDIVK', 'MMBINK', 'RETURN1')
|
|
checkR(function (x) return x % (100 - 10) end, 91, 1,
|
|
'MODK', 'MMBINK', 'RETURN1')
|
|
checkR(function (x) return k1 << x end, 3, 8, 'SHLI', 'MMBINI', 'RETURN1')
|
|
checkR(function (x) return x << 127 end, 10, 0, 'SHRI', 'MMBINI', 'RETURN1')
|
|
checkR(function (x) return x << -127 end, 10, 0, 'SHRI', 'MMBINI', 'RETURN1')
|
|
checkR(function (x) return x >> 128 end, 8, 0, 'SHRI', 'MMBINI', 'RETURN1')
|
|
checkR(function (x) return x >> -127 end, 8, 0, 'SHRI', 'MMBINI', 'RETURN1')
|
|
checkR(function (x) return x & 1 end, 9, 1, 'BANDK', 'MMBINK', 'RETURN1')
|
|
checkR(function (x) return 10 | x end, 1, 11, 'BORK', 'MMBINK', 'RETURN1')
|
|
checkR(function (x) return -10 ~ x end, -1, 9, 'BXORK', 'MMBINK', 'RETURN1')
|
|
|
|
-- K operands in arithmetic operations
|
|
checkR(function (x) return x + 0.0 end, 1, 1.0, 'ADDK', 'MMBINK', 'RETURN1')
|
|
-- check(function (x) return 128 + x end, 'ADDK', 'MMBINK', 'RETURN1')
|
|
checkR(function (x) return x * -10000 end, 2, -20000,
|
|
'MULK', 'MMBINK', 'RETURN1')
|
|
-- check(function (x) return 20 * x end, 'MULK', 'MMBINK', 'RETURN1')
|
|
checkR(function (x) return x ^ 0.5 end, 4, 2.0, 'POWK', 'MMBINK', 'RETURN1')
|
|
checkR(function (x) return x / 2.0 end, 4, 2.0, 'DIVK', 'MMBINK', 'RETURN1')
|
|
checkR(function (x) return x // 10000 end, 10000, 1,
|
|
'IDIVK', 'MMBINK', 'RETURN1')
|
|
checkR(function (x) return x % (100.0 - 10) end, 91, 1.0,
|
|
'MODK', 'MMBINK', 'RETURN1')
|
|
|
|
-- no foldings (and immediate operands)
|
|
check(function () return -0.0 end, 'LOADF', 'UNM', 'RETURN1')
|
|
check(function () return k3/0 end, 'LOADI', 'DIVK', 'MMBINK', 'RETURN1')
|
|
check(function () return 0%0 end, 'LOADI', 'MODK', 'MMBINK', 'RETURN1')
|
|
check(function () return -4//0 end, 'LOADI', 'IDIVK', 'MMBINK', 'RETURN1')
|
|
check(function (x) return x >> 2.0 end, 'LOADF', 'SHR', 'MMBIN', 'RETURN1')
|
|
check(function (x) return x << 128 end, 'LOADI', 'SHL', 'MMBIN', 'RETURN1')
|
|
check(function (x) return x & 2.0 end, 'LOADF', 'BAND', 'MMBIN', 'RETURN1')
|
|
|
|
-- basic 'for' loops
|
|
check(function () for i = -10, 10.5 do end end,
|
|
'LOADI', 'LOADK', 'LOADI', 'FORPREP', 'FORLOOP', 'RETURN0')
|
|
check(function () for i = 0xfffffff, 10.0, 1 do end end,
|
|
'LOADK', 'LOADF', 'LOADI', 'FORPREP', 'FORLOOP', 'RETURN0')
|
|
|
|
-- bug in constant folding for 5.1
|
|
check(function () return -nil end, 'LOADNIL', 'UNM', 'RETURN1')
|
|
|
|
|
|
check(function ()
|
|
local a,b,c
|
|
b[c], a = c, b
|
|
b[a], a = c, b
|
|
a, b = c, a
|
|
a = a
|
|
end,
|
|
'LOADNIL',
|
|
'MOVE', 'MOVE', 'SETTABLE',
|
|
'MOVE', 'MOVE', 'MOVE', 'SETTABLE',
|
|
'MOVE', 'MOVE', 'MOVE',
|
|
-- no code for a = a
|
|
'RETURN0')
|
|
|
|
|
|
-- x == nil , x ~= nil
|
|
-- checkequal(function (b) if (a==nil) then a=1 end; if a~=nil then a=1 end end,
|
|
-- function () if (a==9) then a=1 end; if a~=9 then a=1 end end)
|
|
|
|
-- check(function () if a==nil then a='a' end end,
|
|
-- 'GETTABUP', 'EQ', 'JMP', 'SETTABUP', 'RETURN')
|
|
|
|
do -- tests for table access in upvalues
|
|
local t
|
|
check(function () t[kx] = t.y end, 'GETTABUP', 'SETTABUP')
|
|
check(function (a) t[a()] = t[a()] end,
|
|
'MOVE', 'CALL', 'GETUPVAL', 'MOVE', 'CALL',
|
|
'GETUPVAL', 'GETTABLE', 'SETTABLE')
|
|
end
|
|
|
|
-- de morgan
|
|
checkequal(function () local a; if not (a or b) then b=a end end,
|
|
function () local a; if (not a and not b) then b=a end end)
|
|
|
|
checkequal(function (l) local a; return 0 <= a and a <= l end,
|
|
function (l) local a; return not (not(a >= 0) or not(a <= l)) end)
|
|
|
|
|
|
-- if-break optimizations
|
|
check(function (a, b)
|
|
while a do
|
|
if b then break else a = a + 1 end
|
|
end
|
|
end,
|
|
'TEST', 'JMP', 'TEST', 'JMP', 'ADDI', 'MMBINI', 'JMP', 'RETURN0')
|
|
|
|
checkequal(function () return 6 or true or nil end,
|
|
function () return k6 or kTrue or kNil end)
|
|
|
|
checkequal(function () return 6 and true or nil end,
|
|
function () return k6 and kTrue or kNil end)
|
|
|
|
|
|
do -- string constants
|
|
local k0 <const> = "00000000000000000000000000000000000000000000000000"
|
|
local function f1 ()
|
|
local k <const> = k0
|
|
return function ()
|
|
return function () return k end
|
|
end
|
|
end
|
|
|
|
local f2 = f1()
|
|
local f3 = f2()
|
|
assert(f3() == k0)
|
|
checkK(f3, k0)
|
|
-- string is not needed by other functions
|
|
assert(T.listk(f1)[1] == nil)
|
|
assert(T.listk(f2)[1] == nil)
|
|
end
|
|
|
|
print 'OK'
|
|
|