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1 // Copyright 2016 the V8 project authors. All rights reserved. | 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 | 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_CODE_STUB_ASSEMBLER_H_ | 5 #ifndef V8_CODE_STUB_ASSEMBLER_H_ |
6 #define V8_CODE_STUB_ASSEMBLER_H_ | 6 #define V8_CODE_STUB_ASSEMBLER_H_ |
7 | 7 |
8 #include <functional> | 8 #include <functional> |
9 | 9 |
10 #include "src/compiler/code-assembler.h" | 10 #include "src/compiler/code-assembler.h" |
11 #include "src/objects.h" | 11 #include "src/objects.h" |
12 | 12 |
13 namespace v8 { | 13 namespace v8 { |
14 namespace internal { | 14 namespace internal { |
15 | 15 |
16 class CallInterfaceDescriptor; | 16 class CallInterfaceDescriptor; |
17 class StatsCounter; | 17 class StatsCounter; |
18 class StubCache; | 18 class StubCache; |
19 | 19 |
20 enum class CanonicalizationMode { kDontCanonicalize, kCanonicalize }; | |
21 enum class PrimitiveType { kBoolean, kNumber, kString, kSymbol }; | 20 enum class PrimitiveType { kBoolean, kNumber, kString, kSymbol }; |
22 | 21 |
23 enum class UnicodeEncoding { | 22 enum class UnicodeEncoding { |
24 // Different unicode encodings in a |word32|: | 23 // Different unicode encodings in a |word32|: |
25 UTF16, // hi 16bits -> trailing surrogate or 0, low 16bits -> lead surrogate | 24 UTF16, // hi 16bits -> trailing surrogate or 0, low 16bits -> lead surrogate |
26 UTF32, // full UTF32 code unit / Unicode codepoint | 25 UTF32, // full UTF32 code unit / Unicode codepoint |
27 }; | 26 }; |
28 | 27 |
29 // Provides JavaScript-specific "macro-assembler" functionality on top of the | 28 // Provides JavaScript-specific "macro-assembler" functionality on top of the |
30 // CodeAssembler. By factoring the JavaScript-isms out of the CodeAssembler, | 29 // CodeAssembler. By factoring the JavaScript-isms out of the CodeAssembler, |
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421 compiler::Node* allocation_site); | 420 compiler::Node* allocation_site); |
422 | 421 |
423 compiler::Node* TruncateTaggedToFloat64(compiler::Node* context, | 422 compiler::Node* TruncateTaggedToFloat64(compiler::Node* context, |
424 compiler::Node* value); | 423 compiler::Node* value); |
425 compiler::Node* TruncateTaggedToWord32(compiler::Node* context, | 424 compiler::Node* TruncateTaggedToWord32(compiler::Node* context, |
426 compiler::Node* value); | 425 compiler::Node* value); |
427 // Truncate the floating point value of a HeapNumber to an Int32. | 426 // Truncate the floating point value of a HeapNumber to an Int32. |
428 compiler::Node* TruncateHeapNumberValueToWord32(compiler::Node* object); | 427 compiler::Node* TruncateHeapNumberValueToWord32(compiler::Node* object); |
429 | 428 |
430 // Conversions. | 429 // Conversions. |
431 // Returns a tagged representation of the float64 {value}. Might optionally | 430 compiler::Node* ChangeFloat64ToTagged(compiler::Node* value); |
432 // try to canonicalize to Smi representation if the {value} is in Smi range. | |
433 compiler::Node* ChangeFloat64ToTagged( | |
434 compiler::Node* value, | |
435 CanonicalizationMode mode = CanonicalizationMode::kDontCanonicalize); | |
436 compiler::Node* ChangeInt32ToTagged(compiler::Node* value); | 431 compiler::Node* ChangeInt32ToTagged(compiler::Node* value); |
437 compiler::Node* ChangeUint32ToTagged(compiler::Node* value); | 432 compiler::Node* ChangeUint32ToTagged(compiler::Node* value); |
438 | 433 |
439 // Type conversions. | 434 // Type conversions. |
440 // Throws a TypeError for {method_name} if {value} is not coercible to Object, | 435 // Throws a TypeError for {method_name} if {value} is not coercible to Object, |
441 // or returns the {value} converted to a String otherwise. | 436 // or returns the {value} converted to a String otherwise. |
442 compiler::Node* ToThisString(compiler::Node* context, compiler::Node* value, | 437 compiler::Node* ToThisString(compiler::Node* context, compiler::Node* value, |
443 char const* method_name); | 438 char const* method_name); |
444 // Throws a TypeError for {method_name} if {value} is neither of the given | 439 // Throws a TypeError for {method_name} if {value} is neither of the given |
445 // {primitive_type} nor a JSValue wrapping a value of {primitive_type}, or | 440 // {primitive_type} nor a JSValue wrapping a value of {primitive_type}, or |
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840 Label* bailout); | 835 Label* bailout); |
841 | 836 |
842 static const int kElementLoopUnrollThreshold = 8; | 837 static const int kElementLoopUnrollThreshold = 8; |
843 }; | 838 }; |
844 | 839 |
845 DEFINE_OPERATORS_FOR_FLAGS(CodeStubAssembler::AllocationFlags); | 840 DEFINE_OPERATORS_FOR_FLAGS(CodeStubAssembler::AllocationFlags); |
846 | 841 |
847 } // namespace internal | 842 } // namespace internal |
848 } // namespace v8 | 843 } // namespace v8 |
849 #endif // V8_CODE_STUB_ASSEMBLER_H_ | 844 #endif // V8_CODE_STUB_ASSEMBLER_H_ |
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