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1 // Copyright 2015 the V8 project authors. All rights reserved. | 1 // Copyright 2015 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "src/compiler/wasm-compiler.h" | 5 #include "src/compiler/wasm-compiler.h" |
6 | 6 |
7 #include "src/isolate-inl.h" | 7 #include "src/isolate-inl.h" |
8 | 8 |
9 #include "src/base/platform/elapsed-timer.h" | 9 #include "src/base/platform/elapsed-timer.h" |
10 #include "src/base/platform/platform.h" | 10 #include "src/base/platform/platform.h" |
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1230 | 1230 |
1231 Node* WasmGraphBuilder::BuildI32UConvertF64(Node* input) { | 1231 Node* WasmGraphBuilder::BuildI32UConvertF64(Node* input) { |
1232 MachineOperatorBuilder* m = jsgraph()->machine(); | 1232 MachineOperatorBuilder* m = jsgraph()->machine(); |
1233 if (module_ && module_->asm_js()) { | 1233 if (module_ && module_->asm_js()) { |
1234 // asm.js must use the wacky JS semantics. | 1234 // asm.js must use the wacky JS semantics. |
1235 return graph()->NewNode( | 1235 return graph()->NewNode( |
1236 m->TruncateFloat64ToInt32(TruncationMode::kJavaScript), input); | 1236 m->TruncateFloat64ToInt32(TruncationMode::kJavaScript), input); |
1237 } | 1237 } |
1238 // Truncation of the input value is needed for the overflow check later. | 1238 // Truncation of the input value is needed for the overflow check later. |
1239 Node* trunc = Unop(wasm::kExprF64Trunc, input); | 1239 Node* trunc = Unop(wasm::kExprF64Trunc, input); |
1240 Node* result = graph()->NewNode(m->ChangeFloat64ToUint32(), trunc); | 1240 Node* result = graph()->NewNode(m->TruncateFloat64ToUint32(), trunc); |
1241 | 1241 |
1242 // Convert the result back to f64. If we end up at a different value than the | 1242 // Convert the result back to f64. If we end up at a different value than the |
1243 // truncated input value, then there has been an overflow and we trap. | 1243 // truncated input value, then there has been an overflow and we trap. |
1244 Node* check = Unop(wasm::kExprF64UConvertI32, result); | 1244 Node* check = Unop(wasm::kExprF64UConvertI32, result); |
1245 Node* overflow = Binop(wasm::kExprF64Ne, trunc, check); | 1245 Node* overflow = Binop(wasm::kExprF64Ne, trunc, check); |
1246 trap_->AddTrapIfTrue(kTrapFloatUnrepresentable, overflow); | 1246 trap_->AddTrapIfTrue(kTrapFloatUnrepresentable, overflow); |
1247 | 1247 |
1248 return result; | 1248 return result; |
1249 } | 1249 } |
1250 | 1250 |
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2804 static_cast<int>(function.code_end_offset - function.code_start_offset), | 2804 static_cast<int>(function.code_end_offset - function.code_start_offset), |
2805 decode_ms, static_cast<int>(graph.NodeCount()), compile_ms); | 2805 decode_ms, static_cast<int>(graph.NodeCount()), compile_ms); |
2806 } | 2806 } |
2807 return code; | 2807 return code; |
2808 } | 2808 } |
2809 | 2809 |
2810 | 2810 |
2811 } // namespace compiler | 2811 } // namespace compiler |
2812 } // namespace internal | 2812 } // namespace internal |
2813 } // namespace v8 | 2813 } // namespace v8 |
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