Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1 | // Copyright 2013 the V8 project authors. All rights reserved. |
| 2 | // Redistribution and use in source and binary forms, with or without |
| 3 | // modification, are permitted provided that the following conditions are |
| 4 | // met: |
| 5 | // |
| 6 | // * Redistributions of source code must retain the above copyright |
| 7 | // notice, this list of conditions and the following disclaimer. |
| 8 | // * Redistributions in binary form must reproduce the above |
| 9 | // copyright notice, this list of conditions and the following |
| 10 | // disclaimer in the documentation and/or other materials provided |
| 11 | // with the distribution. |
| 12 | // * Neither the name of Google Inc. nor the names of its |
| 13 | // contributors may be used to endorse or promote products derived |
| 14 | // from this software without specific prior written permission. |
| 15 | // |
| 16 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | |
| 28 | #include <stdlib.h> |
| 29 | |
| 30 | #include <limits> |
| 31 | |
| 32 | #include "src/v8.h" |
| 33 | |
| 34 | #include "src/base/platform/platform.h" |
| 35 | #include "src/code-stubs.h" |
| 36 | #include "src/factory.h" |
| 37 | #include "src/macro-assembler.h" |
| 38 | #include "test/cctest/cctest.h" |
| 39 | #include "test/cctest/test-code-stubs.h" |
| 40 | |
| 41 | using namespace v8::internal; |
| 42 | |
| 43 | |
| 44 | int STDCALL ConvertDToICVersion(double d) { |
| 45 | union { double d; uint32_t u[2]; } dbl; |
| 46 | dbl.d = d; |
| 47 | uint32_t exponent_bits = dbl.u[1]; |
| 48 | int32_t shifted_mask = static_cast<int32_t>(Double::kExponentMask >> 32); |
| 49 | int32_t exponent = (((exponent_bits & shifted_mask) >> |
| 50 | (Double::kPhysicalSignificandSize - 32)) - |
| 51 | HeapNumber::kExponentBias); |
| 52 | if (exponent < 0) { |
| 53 | return 0; |
| 54 | } |
| 55 | uint32_t unsigned_exponent = static_cast<uint32_t>(exponent); |
| 56 | int result = 0; |
| 57 | uint32_t max_exponent = |
| 58 | static_cast<uint32_t>(Double::kPhysicalSignificandSize); |
| 59 | if (unsigned_exponent >= max_exponent) { |
| 60 | if ((exponent - Double::kPhysicalSignificandSize) < 32) { |
| 61 | result = dbl.u[0] << (exponent - Double::kPhysicalSignificandSize); |
| 62 | } |
| 63 | } else { |
| 64 | uint64_t big_result = |
| 65 | (bit_cast<uint64_t>(d) & Double::kSignificandMask) | Double::kHiddenBit; |
| 66 | big_result = big_result >> (Double::kPhysicalSignificandSize - exponent); |
| 67 | result = static_cast<uint32_t>(big_result); |
| 68 | } |
| 69 | if (static_cast<int32_t>(exponent_bits) < 0) { |
| 70 | return (0 - result); |
| 71 | } else { |
| 72 | return result; |
| 73 | } |
| 74 | } |
| 75 | |
| 76 | |
| 77 | void RunOneTruncationTestWithTest(ConvertDToICallWrapper callWrapper, |
| 78 | ConvertDToIFunc func, |
| 79 | double from, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 80 | int32_t to) { |
| 81 | int32_t result = (*callWrapper)(func, from); |
| 82 | CHECK_EQ(to, result); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 83 | } |
| 84 | |
| 85 | |
| 86 | int32_t DefaultCallWrapper(ConvertDToIFunc func, |
| 87 | double from) { |
| 88 | return (*func)(from); |
| 89 | } |
| 90 | |
| 91 | |
| 92 | // #define NaN and Infinity so that it's possible to cut-and-paste these tests |
| 93 | // directly to a .js file and run them. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 94 | #define NaN (std::numeric_limits<double>::quiet_NaN()) |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 95 | #define Infinity (std::numeric_limits<double>::infinity()) |
| 96 | #define RunOneTruncationTest(p1, p2) \ |
| 97 | RunOneTruncationTestWithTest(callWrapper, func, p1, p2) |
| 98 | |
| 99 | |
| 100 | void RunAllTruncationTests(ConvertDToIFunc func) { |
| 101 | RunAllTruncationTests(DefaultCallWrapper, func); |
| 102 | } |
| 103 | |
| 104 | |
| 105 | void RunAllTruncationTests(ConvertDToICallWrapper callWrapper, |
| 106 | ConvertDToIFunc func) { |
| 107 | RunOneTruncationTest(0, 0); |
| 108 | RunOneTruncationTest(0.5, 0); |
| 109 | RunOneTruncationTest(-0.5, 0); |
| 110 | RunOneTruncationTest(1.5, 1); |
| 111 | RunOneTruncationTest(-1.5, -1); |
| 112 | RunOneTruncationTest(5.5, 5); |
| 113 | RunOneTruncationTest(-5.0, -5); |
| 114 | RunOneTruncationTest(NaN, 0); |
| 115 | RunOneTruncationTest(Infinity, 0); |
| 116 | RunOneTruncationTest(-NaN, 0); |
| 117 | RunOneTruncationTest(-Infinity, 0); |
| 118 | RunOneTruncationTest(4.94065645841e-324, 0); |
| 119 | RunOneTruncationTest(-4.94065645841e-324, 0); |
| 120 | |
| 121 | RunOneTruncationTest(0.9999999999999999, 0); |
| 122 | RunOneTruncationTest(-0.9999999999999999, 0); |
| 123 | RunOneTruncationTest(4294967296.0, 0); |
| 124 | RunOneTruncationTest(-4294967296.0, 0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 125 | RunOneTruncationTest(9223372036854775000.0, -1024); |
| 126 | RunOneTruncationTest(-9223372036854775000.0, 1024); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 127 | RunOneTruncationTest(4.5036e+15, 372629504); |
| 128 | RunOneTruncationTest(-4.5036e+15, -372629504); |
| 129 | |
| 130 | RunOneTruncationTest(287524199.5377777, 0x11234567); |
| 131 | RunOneTruncationTest(-287524199.5377777, -0x11234567); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 132 | RunOneTruncationTest(2300193596.302222, -1994773700); |
| 133 | RunOneTruncationTest(-2300193596.302222, 1994773700); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 134 | RunOneTruncationTest(4600387192.604444, 305419896); |
| 135 | RunOneTruncationTest(-4600387192.604444, -305419896); |
| 136 | RunOneTruncationTest(4823855600872397.0, 1737075661); |
| 137 | RunOneTruncationTest(-4823855600872397.0, -1737075661); |
| 138 | |
| 139 | RunOneTruncationTest(4503603922337791.0, -1); |
| 140 | RunOneTruncationTest(-4503603922337791.0, 1); |
| 141 | RunOneTruncationTest(4503601774854143.0, 2147483647); |
| 142 | RunOneTruncationTest(-4503601774854143.0, -2147483647); |
| 143 | RunOneTruncationTest(9007207844675582.0, -2); |
| 144 | RunOneTruncationTest(-9007207844675582.0, 2); |
| 145 | |
| 146 | RunOneTruncationTest(2.4178527921507624e+24, -536870912); |
| 147 | RunOneTruncationTest(-2.4178527921507624e+24, 536870912); |
| 148 | RunOneTruncationTest(2.417853945072267e+24, -536870912); |
| 149 | RunOneTruncationTest(-2.417853945072267e+24, 536870912); |
| 150 | |
| 151 | RunOneTruncationTest(4.8357055843015248e+24, -1073741824); |
| 152 | RunOneTruncationTest(-4.8357055843015248e+24, 1073741824); |
| 153 | RunOneTruncationTest(4.8357078901445341e+24, -1073741824); |
| 154 | RunOneTruncationTest(-4.8357078901445341e+24, 1073741824); |
| 155 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 156 | RunOneTruncationTest(2147483647.0, 2147483647); |
| 157 | RunOneTruncationTest(-2147483648.0, -2147483647-1); |
| 158 | RunOneTruncationTest(9.6714111686030497e+24, -2147483647-1); |
| 159 | RunOneTruncationTest(-9.6714111686030497e+24, -2147483647-1); |
| 160 | RunOneTruncationTest(9.6714157802890681e+24, -2147483647-1); |
| 161 | RunOneTruncationTest(-9.6714157802890681e+24, -2147483647-1); |
| 162 | RunOneTruncationTest(1.9342813113834065e+25, -2147483647-1); |
| 163 | RunOneTruncationTest(-1.9342813113834065e+25, -2147483647-1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 164 | |
| 165 | RunOneTruncationTest(3.868562622766813e+25, 0); |
| 166 | RunOneTruncationTest(-3.868562622766813e+25, 0); |
| 167 | RunOneTruncationTest(1.7976931348623157e+308, 0); |
| 168 | RunOneTruncationTest(-1.7976931348623157e+308, 0); |
| 169 | } |
| 170 | |
| 171 | #undef NaN |
| 172 | #undef Infinity |
| 173 | #undef RunOneTruncationTest |
| 174 | |
| 175 | |
| 176 | TEST(CodeStubMajorKeys) { |
| 177 | CcTest::InitializeVM(); |
| 178 | LocalContext context; |
| 179 | Isolate* isolate = CcTest::i_isolate(); |
| 180 | |
| 181 | #define CHECK_STUB(NAME) \ |
| 182 | { \ |
| 183 | HandleScope scope(isolate); \ |
| 184 | NAME##Stub stub_impl(0xabcd, isolate); \ |
| 185 | CodeStub* stub = &stub_impl; \ |
| 186 | CHECK_EQ(stub->MajorKey(), CodeStub::NAME); \ |
| 187 | } |
| 188 | CODE_STUB_LIST(CHECK_STUB); |
| 189 | } |