mirror of https://github.com/tidwall/tile38.git
144 lines
3.2 KiB
Lua
144 lines
3.2 KiB
Lua
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if T==nil then
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(Message or print)('\a\n >>> testC not active: skipping opcode tests <<<\n\a')
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return
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end
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print "testing code generation and optimizations"
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-- this code gave an error for the code checker
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do
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local function f (a)
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for k,v,w in a do end
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end
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end
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function check (f, ...)
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local c = T.listcode(f)
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for i=1, arg.n do
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-- print(arg[i], c[i])
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assert(string.find(c[i], '- '..arg[i]..' *%d'))
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end
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assert(c[arg.n+2] == nil)
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end
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function checkequal (a, b)
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a = T.listcode(a)
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b = T.listcode(b)
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for i = 1, table.getn(a) do
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a[i] = string.gsub(a[i], '%b()', '') -- remove line number
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b[i] = string.gsub(b[i], '%b()', '') -- remove line number
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assert(a[i] == b[i])
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end
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end
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-- some basic instructions
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check(function ()
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(function () end){f()}
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end, 'CLOSURE', 'NEWTABLE', 'GETGLOBAL', 'CALL', 'SETLIST', 'CALL', 'RETURN')
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-- sequence of LOADNILs
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check(function ()
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local a,b,c
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local d; local e;
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a = nil; d=nil
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end, 'RETURN')
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-- single return
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check (function (a,b,c) return a end, 'RETURN')
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-- infinite loops
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check(function () while true do local a = -1 end end,
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'LOADK', 'JMP', 'RETURN')
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check(function () while 1 do local a = -1 end end,
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'LOADK', 'JMP', 'RETURN')
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check(function () repeat local x = 1 until false end,
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'LOADK', 'JMP', 'RETURN')
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check(function () repeat local x until nil end,
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'LOADNIL', 'JMP', 'RETURN')
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check(function () repeat local x = 1 until true end,
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'LOADK', 'RETURN')
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-- concat optimization
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check(function (a,b,c,d) return a..b..c..d end,
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'MOVE', 'MOVE', 'MOVE', 'MOVE', 'CONCAT', 'RETURN')
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-- not
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check(function () return not not nil end, 'LOADBOOL', 'RETURN')
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check(function () return not not false end, 'LOADBOOL', 'RETURN')
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check(function () return not not true end, 'LOADBOOL', 'RETURN')
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check(function () return not not 1 end, 'LOADBOOL', 'RETURN')
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-- direct access to locals
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check(function ()
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local a,b,c,d
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a = b*2
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c[4], a[b] = -((a + d/-20.5 - a[b]) ^ a.x), b
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end,
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'MUL',
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'DIV', 'ADD', 'GETTABLE', 'SUB', 'GETTABLE', 'POW',
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'UNM', 'SETTABLE', 'SETTABLE', 'RETURN')
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-- direct access to constants
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check(function ()
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local a,b
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a.x = 0
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a.x = b
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a[b] = 'y'
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a = 1 - a
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b = 1/a
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b = 5+4
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a[true] = false
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end,
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'SETTABLE', 'SETTABLE', 'SETTABLE', 'SUB', 'DIV', 'LOADK',
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'SETTABLE', 'RETURN')
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local function f () return -((2^8 + -(-1)) % 8)/2 * 4 - 3 end
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check(f, 'LOADK', 'RETURN')
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assert(f() == -5)
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check(function ()
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local a,b,c
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b[c], a = c, b
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b[a], a = c, b
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a, b = c, a
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a = a
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end,
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'MOVE', 'MOVE', 'SETTABLE',
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'MOVE', 'MOVE', 'MOVE', 'SETTABLE',
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'MOVE', 'MOVE', 'MOVE',
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-- no code for a = a
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'RETURN')
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-- x == nil , x ~= nil
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checkequal(function () if (a==nil) then a=1 end; if a~=nil then a=1 end end,
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function () if (a==9) then a=1 end; if a~=9 then a=1 end end)
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check(function () if a==nil then a=1 end end,
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'GETGLOBAL', 'EQ', 'JMP', 'LOADK', 'SETGLOBAL', 'RETURN')
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-- de morgan
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checkequal(function () local a; if not (a or b) then b=a end end,
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function () local a; if (not a and not b) then b=a end end)
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checkequal(function (l) local a; return 0 <= a and a <= l end,
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function (l) local a; return not (not(a >= 0) or not(a <= l)) end)
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print 'OK'
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