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GeezerVison is showing github.com — tests/code.lua at master · lua/tests Expand file tree/ Copy pathcode.luaMore file actions 239 lines (189 loc) · 5.83 KB / Copy pathcode.luaFile metadata and controls239 lines (189 loc) · 5.83 KB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 -- $Id: code.lua,v 1.41 2014/12/26 17:18:43 roberto Exp $ -- 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" -- 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 = 3; a = 0; a = 0.0; a = -7 + 7 a = 3.78/4; a = 3.78/4 a = -3.78/4; a = 3.78/4; a = -3.78/4 a = -3.79/4; a = 0.0; a = -0; a = 3; a = 3.0; a = 3; a = 3.0 end checkKlist(foo, {3, 0, 0.0, 3.78/4, -3.78/4, -3.79/4, 3.0}) -- testing opcodes function check (f, ...) local arg = {...} local c = T.listcode(f) for i=1, #arg do -- print(arg[i], c[i]) assert(string.find(c[i], '- '..arg[i]..' *%d')) end assert(c[#arg+2] == nil) end function checkequal (a, b) a = T.listcode(a) b = T.listcode(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 () end){f()} end, 'CLOSURE', 'NEWTABLE', 'GETTABUP', 'CALL', 'SETLIST', 'CALL', 'RETURN') -- sequence of LOADNILs check(function () local a,b,c local d; local e; local f,g,h; d = nil; d=nil; b=nil; a=nil; c=nil; end, 'LOADNIL', 'RETURN') check(function () local a,b,c,d = 1,1,1,1 d=nil;c=nil;b=nil;a=nil end, 'LOADK', 'LOADK', 'LOADK', 'LOADK', 'LOADNIL', 'RETURN') 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, 'RETURN') -- infinite loops check(function () while true do local a = -1 end end, 'LOADK', 'JMP', 'RETURN') check(function () while 1 do local a = -1 end end, 'LOADK', 'JMP', 'RETURN') check(function () repeat local x = 1 until true end, 'LOADK', 'RETURN') -- concat optimization check(function (a,b,c,d) return a..b..c..d end, 'MOVE', 'MOVE', 'MOVE', 'MOVE', 'CONCAT', 'RETURN') -- not check(function () return not not nil end, 'LOADBOOL', 'RETURN') check(function () return not not false end, 'LOADBOOL', 'RETURN') check(function () return not not true end, 'LOADBOOL', 'RETURN') check(function () return not not 1 end, 'LOADBOOL', 'RETURN') -- direct access to locals check(function () local a,b,c,d a = b*2 c[2], a[b] = -((a + d/2 - a[b]) ^ a.x), b end, 'LOADNIL', 'MUL', 'DIV', 'ADD', 'GETTABLE', 'SUB', 'GETTABLE', 'POW', 'UNM', 'SETTABLE', 'SETTABLE', 'RETURN') -- direct access to constants check(function () local a,b a.x = 3.2 a.x = b a[b] = 'x' end, 'LOADNIL', 'SETTABLE', 'SETTABLE', 'SETTABLE', 'RETURN') check(function () local a,b a = 1 - a b = 1/a b = 5-4 end, 'LOADNIL', 'SUB', 'DIV', 'LOADK', 'RETURN') check(function () local a,b a[true] = false end, 'LOADNIL', 'SETTABLE', 'RETURN') -- constant folding local function checkK (func, val) check(func, 'LOADK', 'RETURN') local k = T.listk(func) assert(#k == 1 and k[1] == val and math.type(k[1]) == math.type(val)) assert(func() == val) end checkK(function () return 0.0 end, 0.0) checkK(function () return 0 end, 0) checkK(function () return -0//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) checkK(function () return (-3^0 + 5) // 3.0 end, 1.0) checkK(function () return -3 % 5 end, 2) checkK(function () return -((2.0^8 + -(-1)) % 8)/2 * 4 - 3 end, -5.0) checkK(function () return -((2^8 + -(-1)) % 8)//2 * 4 - 3 end, -7.0) checkK(function () return 0xF0.0 | 0xCC.0 ~ 0xAA & 0xFD end, 0xF4) checkK(function () return ~(~0xFF0 | 0xFF0) end, 0) checkK(function () return ~~-100024.0 end, -100024) checkK(function () return ((100 << 6) << -4) >> 2 end, 100) -- no foldings check(function () return -0.0 end, 'LOADK', 'UNM', 'RETURN') check(function () return 3/0 end, 'DIV', 'RETURN') check(function () return 0%0 end, 'MOD', 'RETURN') check(function () return -4//0 end, 'IDIV', 'RETURN') -- bug in constant folding for 5.1 check(function () return -nil end, 'LOADNIL', 'UNM', 'RETURN') 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 'RETURN') -- x == nil , x ~= nil checkequal(function () 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') -- 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-goto optimizations check(function (a, b, c, d, e) if a == b then goto l1 elseif a == c then goto l2 elseif a == d then goto l2 else if a == e then goto l3 else goto l3 end end ::l1:: ::l2:: ::l3:: ::l4:: end, 'EQ', 'JMP', 'EQ', 'JMP', 'EQ', 'JMP', 'EQ', 'JMP', 'JMP', 'RETURN') checkequal( function (a) while a < 10 do a = a + 1 end end, function (a) ::L2:: if not(a < 10) then goto L1 end; a = a + 1; goto L2; ::L1:: end ) checkequal( function (a) while a < 10 do a = a + 1 end end, function (a) while true do if not(a < 10) then break end; a = a + 1; end end ) print 'OK' |
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