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Side by Side Diff: src/compiler/machine-operator.h

Issue 1132033002: [turbofan] Float32Abs and Float64Abs are supported by all backends. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 5 years, 7 months ago
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1 // Copyright 2013 the V8 project authors. All rights reserved. 1 // Copyright 2013 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 #ifndef V8_COMPILER_MACHINE_OPERATOR_H_ 5 #ifndef V8_COMPILER_MACHINE_OPERATOR_H_
6 #define V8_COMPILER_MACHINE_OPERATOR_H_ 6 #define V8_COMPILER_MACHINE_OPERATOR_H_
7 7
8 #include "src/base/flags.h" 8 #include "src/base/flags.h"
9 #include "src/compiler/machine-type.h" 9 #include "src/compiler/machine-type.h"
10 10
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67 67
68 // Interface for building machine-level operators. These operators are 68 // Interface for building machine-level operators. These operators are
69 // machine-level but machine-independent and thus define a language suitable 69 // machine-level but machine-independent and thus define a language suitable
70 // for generating code to run on architectures such as ia32, x64, arm, etc. 70 // for generating code to run on architectures such as ia32, x64, arm, etc.
71 class MachineOperatorBuilder final : public ZoneObject { 71 class MachineOperatorBuilder final : public ZoneObject {
72 public: 72 public:
73 // Flags that specify which operations are available. This is useful 73 // Flags that specify which operations are available. This is useful
74 // for operations that are unsupported by some back-ends. 74 // for operations that are unsupported by some back-ends.
75 enum Flag { 75 enum Flag {
76 kNoFlags = 0u, 76 kNoFlags = 0u,
77 kFloat32Abs = 1u << 0, 77 kFloat32Max = 1u << 0,
78 kFloat32Max = 1u << 1, 78 kFloat32Min = 1u << 1,
79 kFloat32Min = 1u << 2, 79 kFloat64Max = 1u << 2,
80 kFloat64Abs = 1u << 3, 80 kFloat64Min = 1u << 3,
81 kFloat64Max = 1u << 4, 81 kFloat64RoundDown = 1u << 4,
82 kFloat64Min = 1u << 5, 82 kFloat64RoundTruncate = 1u << 5,
83 kFloat64RoundDown = 1u << 6, 83 kFloat64RoundTiesAway = 1u << 6,
84 kFloat64RoundTruncate = 1u << 7, 84 kInt32DivIsSafe = 1u << 7,
85 kFloat64RoundTiesAway = 1u << 8, 85 kUint32DivIsSafe = 1u << 8,
86 kInt32DivIsSafe = 1u << 9, 86 kWord32ShiftIsSafe = 1u << 9
87 kUint32DivIsSafe = 1u << 10,
88 kWord32ShiftIsSafe = 1u << 11
89 }; 87 };
90 typedef base::Flags<Flag, unsigned> Flags; 88 typedef base::Flags<Flag, unsigned> Flags;
91 89
92 explicit MachineOperatorBuilder(Zone* zone, MachineType word = kMachPtr, 90 explicit MachineOperatorBuilder(Zone* zone, MachineType word = kMachPtr,
93 Flags supportedOperators = kNoFlags); 91 Flags supportedOperators = kNoFlags);
94 92
95 const Operator* Word32And(); 93 const Operator* Word32And();
96 const Operator* Word32Or(); 94 const Operator* Word32Or();
97 const Operator* Word32Xor(); 95 const Operator* Word32Xor();
98 const Operator* Word32Shl(); 96 const Operator* Word32Shl();
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194 bool HasFloat32Min() { return flags_ & kFloat32Min; } 192 bool HasFloat32Min() { return flags_ & kFloat32Min; }
195 193
196 // Floating point min/max complying to IEEE 754 (double-precision). 194 // Floating point min/max complying to IEEE 754 (double-precision).
197 const Operator* Float64Max(); 195 const Operator* Float64Max();
198 const Operator* Float64Min(); 196 const Operator* Float64Min();
199 bool HasFloat64Max() { return flags_ & kFloat64Max; } 197 bool HasFloat64Max() { return flags_ & kFloat64Max; }
200 bool HasFloat64Min() { return flags_ & kFloat64Min; } 198 bool HasFloat64Min() { return flags_ & kFloat64Min; }
201 199
202 // Floating point abs complying to IEEE 754 (single-precision). 200 // Floating point abs complying to IEEE 754 (single-precision).
203 const Operator* Float32Abs(); 201 const Operator* Float32Abs();
204 bool HasFloat32Abs() const { return flags_ & kFloat32Abs; }
205 202
206 // Floating point abs complying to IEEE 754 (double-precision). 203 // Floating point abs complying to IEEE 754 (double-precision).
207 const Operator* Float64Abs(); 204 const Operator* Float64Abs();
208 bool HasFloat64Abs() const { return flags_ & kFloat64Abs; }
209 205
210 // Floating point rounding. 206 // Floating point rounding.
211 const Operator* Float64RoundDown(); 207 const Operator* Float64RoundDown();
212 const Operator* Float64RoundTruncate(); 208 const Operator* Float64RoundTruncate();
213 const Operator* Float64RoundTiesAway(); 209 const Operator* Float64RoundTiesAway();
214 bool HasFloat64RoundDown() { return flags_ & kFloat64RoundDown; } 210 bool HasFloat64RoundDown() { return flags_ & kFloat64RoundDown; }
215 bool HasFloat64RoundTruncate() { return flags_ & kFloat64RoundTruncate; } 211 bool HasFloat64RoundTruncate() { return flags_ & kFloat64RoundTruncate; }
216 bool HasFloat64RoundTiesAway() { return flags_ & kFloat64RoundTiesAway; } 212 bool HasFloat64RoundTiesAway() { return flags_ & kFloat64RoundTiesAway; }
217 213
218 // Floating point bit representation. 214 // Floating point bit representation.
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279 }; 275 };
280 276
281 277
282 DEFINE_OPERATORS_FOR_FLAGS(MachineOperatorBuilder::Flags) 278 DEFINE_OPERATORS_FOR_FLAGS(MachineOperatorBuilder::Flags)
283 279
284 } // namespace compiler 280 } // namespace compiler
285 } // namespace internal 281 } // namespace internal
286 } // namespace v8 282 } // namespace v8
287 283
288 #endif // V8_COMPILER_MACHINE_OPERATOR_H_ 284 #endif // V8_COMPILER_MACHINE_OPERATOR_H_
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