Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1 | // Copyright 2016 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #include "test/unittests/test-utils.h" |
| 6 | |
| 7 | #include "src/v8.h" |
| 8 | |
| 9 | #include "test/cctest/wasm/test-signatures.h" |
| 10 | |
| 11 | #include "src/bit-vector.h" |
| 12 | #include "src/objects.h" |
| 13 | |
| 14 | #include "src/wasm/ast-decoder.h" |
| 15 | #include "src/wasm/wasm-macro-gen.h" |
| 16 | #include "src/wasm/wasm-module.h" |
| 17 | |
| 18 | #define WASM_SET_ZERO(i) WASM_SET_LOCAL(i, WASM_ZERO) |
| 19 | |
| 20 | namespace v8 { |
| 21 | namespace internal { |
| 22 | namespace wasm { |
| 23 | |
| 24 | class WasmLoopAssignmentAnalyzerTest : public TestWithZone { |
| 25 | public: |
| 26 | WasmLoopAssignmentAnalyzerTest() : TestWithZone(), sigs() { |
| 27 | init_env(&env, sigs.v_v()); |
| 28 | } |
| 29 | |
| 30 | TestSignatures sigs; |
| 31 | FunctionEnv env; |
| 32 | |
| 33 | static void init_env(FunctionEnv* env, FunctionSig* sig) { |
| 34 | env->module = nullptr; |
| 35 | env->sig = sig; |
| 36 | env->local_i32_count = 0; |
| 37 | env->local_i64_count = 0; |
| 38 | env->local_f32_count = 0; |
| 39 | env->local_f64_count = 0; |
| 40 | env->SumLocals(); |
| 41 | } |
| 42 | |
| 43 | BitVector* Analyze(const byte* start, const byte* end) { |
| 44 | return AnalyzeLoopAssignmentForTesting(zone(), &env, start, end); |
| 45 | } |
| 46 | }; |
| 47 | |
| 48 | |
| 49 | TEST_F(WasmLoopAssignmentAnalyzerTest, Empty0) { |
| 50 | byte code[] = { 0 }; |
| 51 | BitVector* assigned = Analyze(code, code); |
| 52 | CHECK_NULL(assigned); |
| 53 | } |
| 54 | |
| 55 | |
| 56 | TEST_F(WasmLoopAssignmentAnalyzerTest, Empty1) { |
| 57 | byte code[] = {kExprLoop, 0}; |
| 58 | for (int i = 0; i < 5; i++) { |
| 59 | BitVector* assigned = Analyze(code, code + arraysize(code)); |
| 60 | for (int j = 0; j < assigned->length(); j++) { |
| 61 | CHECK_EQ(false, assigned->Contains(j)); |
| 62 | } |
| 63 | env.AddLocals(kAstI32, 1); |
| 64 | } |
| 65 | } |
| 66 | |
| 67 | |
| 68 | TEST_F(WasmLoopAssignmentAnalyzerTest, One) { |
| 69 | env.AddLocals(kAstI32, 5); |
| 70 | for (int i = 0; i < 5; i++) { |
| 71 | byte code[] = {WASM_LOOP(1, WASM_SET_ZERO(i))}; |
| 72 | BitVector* assigned = Analyze(code, code + arraysize(code)); |
| 73 | for (int j = 0; j < assigned->length(); j++) { |
| 74 | CHECK_EQ(j == i, assigned->Contains(j)); |
| 75 | } |
| 76 | } |
| 77 | } |
| 78 | |
| 79 | |
| 80 | TEST_F(WasmLoopAssignmentAnalyzerTest, OneBeyond) { |
| 81 | env.AddLocals(kAstI32, 5); |
| 82 | for (int i = 0; i < 5; i++) { |
| 83 | byte code[] = {WASM_LOOP(1, WASM_SET_ZERO(i)), WASM_SET_ZERO(1)}; |
| 84 | BitVector* assigned = Analyze(code, code + arraysize(code)); |
| 85 | for (int j = 0; j < assigned->length(); j++) { |
| 86 | CHECK_EQ(j == i, assigned->Contains(j)); |
| 87 | } |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | |
| 92 | TEST_F(WasmLoopAssignmentAnalyzerTest, Two) { |
| 93 | env.AddLocals(kAstI32, 5); |
| 94 | for (int i = 0; i < 5; i++) { |
| 95 | for (int j = 0; j < 5; j++) { |
| 96 | byte code[] = {WASM_LOOP(2, WASM_SET_ZERO(i), WASM_SET_ZERO(j))}; |
| 97 | BitVector* assigned = Analyze(code, code + arraysize(code)); |
| 98 | for (int k = 0; k < assigned->length(); k++) { |
| 99 | bool expected = k == i || k == j; |
| 100 | CHECK_EQ(expected, assigned->Contains(k)); |
| 101 | } |
| 102 | } |
| 103 | } |
| 104 | } |
| 105 | |
| 106 | |
| 107 | TEST_F(WasmLoopAssignmentAnalyzerTest, NestedIf) { |
| 108 | env.AddLocals(kAstI32, 5); |
| 109 | for (int i = 0; i < 5; i++) { |
| 110 | byte code[] = {WASM_LOOP( |
| 111 | 1, WASM_IF_ELSE(WASM_SET_ZERO(0), WASM_SET_ZERO(i), WASM_SET_ZERO(1)))}; |
| 112 | BitVector* assigned = Analyze(code, code + arraysize(code)); |
| 113 | for (int j = 0; j < assigned->length(); j++) { |
| 114 | bool expected = i == j || j == 0 || j == 1; |
| 115 | CHECK_EQ(expected, assigned->Contains(j)); |
| 116 | } |
| 117 | } |
| 118 | } |
| 119 | |
| 120 | |
| 121 | static byte LEBByte(uint32_t val, byte which) { |
| 122 | byte b = (val >> (which * 7)) & 0x7F; |
| 123 | if (val >> ((which + 1) * 7)) b |= 0x80; |
| 124 | return b; |
| 125 | } |
| 126 | |
| 127 | |
| 128 | TEST_F(WasmLoopAssignmentAnalyzerTest, BigLocal) { |
| 129 | env.AddLocals(kAstI32, 65000); |
| 130 | for (int i = 13; i < 65000; i = static_cast<int>(i * 1.5)) { |
| 131 | byte code[] = {kExprLoop, |
| 132 | 1, |
| 133 | kExprSetLocal, |
| 134 | LEBByte(i, 0), |
| 135 | LEBByte(i, 1), |
| 136 | LEBByte(i, 2), |
| 137 | 11, |
| 138 | 12, |
| 139 | 13}; |
| 140 | |
| 141 | BitVector* assigned = Analyze(code, code + arraysize(code)); |
| 142 | for (int j = 0; j < assigned->length(); j++) { |
| 143 | bool expected = i == j; |
| 144 | CHECK_EQ(expected, assigned->Contains(j)); |
| 145 | } |
| 146 | } |
| 147 | } |
| 148 | |
| 149 | |
| 150 | TEST_F(WasmLoopAssignmentAnalyzerTest, Break) { |
| 151 | env.AddLocals(kAstI32, 3); |
| 152 | byte code[] = { |
| 153 | WASM_LOOP(1, WASM_IF(WASM_GET_LOCAL(0), WASM_BRV(1, WASM_SET_ZERO(1)))), |
| 154 | WASM_SET_ZERO(0)}; |
| 155 | |
| 156 | BitVector* assigned = Analyze(code, code + arraysize(code)); |
| 157 | for (int j = 0; j < assigned->length(); j++) { |
| 158 | bool expected = j == 1; |
| 159 | CHECK_EQ(expected, assigned->Contains(j)); |
| 160 | } |
| 161 | } |
| 162 | |
| 163 | |
| 164 | TEST_F(WasmLoopAssignmentAnalyzerTest, Loop1) { |
| 165 | env.AddLocals(kAstI32, 5); |
| 166 | byte code[] = { |
| 167 | WASM_LOOP(1, WASM_IF(WASM_GET_LOCAL(0), |
| 168 | WASM_BRV(0, WASM_SET_LOCAL( |
| 169 | 3, WASM_I32_SUB(WASM_GET_LOCAL(0), |
| 170 | WASM_I8(1)))))), |
| 171 | WASM_GET_LOCAL(0)}; |
| 172 | |
| 173 | BitVector* assigned = Analyze(code, code + arraysize(code)); |
| 174 | for (int j = 0; j < assigned->length(); j++) { |
| 175 | bool expected = j == 3; |
| 176 | CHECK_EQ(expected, assigned->Contains(j)); |
| 177 | } |
| 178 | } |
| 179 | |
| 180 | |
| 181 | TEST_F(WasmLoopAssignmentAnalyzerTest, Loop2) { |
| 182 | env.AddLocals(kAstI32, 3); |
| 183 | const byte kIter = 0; |
| 184 | env.AddLocals(kAstF32, 3); |
| 185 | const byte kSum = 3; |
| 186 | |
| 187 | byte code[] = {WASM_BLOCK( |
| 188 | 3, |
| 189 | WASM_WHILE( |
| 190 | WASM_GET_LOCAL(kIter), |
| 191 | WASM_BLOCK(2, WASM_SET_LOCAL( |
| 192 | kSum, WASM_F32_ADD( |
| 193 | WASM_GET_LOCAL(kSum), |
| 194 | WASM_LOAD_MEM(MachineType::Float32(), |
| 195 | WASM_GET_LOCAL(kIter)))), |
| 196 | WASM_SET_LOCAL(kIter, WASM_I32_SUB(WASM_GET_LOCAL(kIter), |
| 197 | WASM_I8(4))))), |
| 198 | WASM_STORE_MEM(MachineType::Float32(), WASM_ZERO, WASM_GET_LOCAL(kSum)), |
| 199 | WASM_GET_LOCAL(kIter))}; |
| 200 | |
| 201 | BitVector* assigned = Analyze(code + 2, code + arraysize(code)); |
| 202 | for (int j = 0; j < assigned->length(); j++) { |
| 203 | bool expected = j == kIter || j == kSum; |
| 204 | CHECK_EQ(expected, assigned->Contains(j)); |
| 205 | } |
| 206 | } |
| 207 | |
| 208 | |
| 209 | } // namespace wasm |
| 210 | } // namespace internal |
| 211 | } // namespace v8 |