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Side by Side Diff: runtime/vm/object.h

Issue 12457034: Ensure that all goto instructions have deoptimization target. (Closed) Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart
Patch Set: Delete UNREACHABLE Created 7 years, 8 months ago
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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
2 // for details. All rights reserved. Use of this source code is governed by a 2 // for details. All rights reserved. Use of this source code is governed by a
3 // BSD-style license that can be found in the LICENSE file. 3 // BSD-style license that can be found in the LICENSE file.
4 4
5 #ifndef VM_OBJECT_H_ 5 #ifndef VM_OBJECT_H_
6 #define VM_OBJECT_H_ 6 #define VM_OBJECT_H_
7 7
8 #include "include/dart_api.h" 8 #include "include/dart_api.h"
9 #include "platform/assert.h" 9 #include "platform/assert.h"
10 #include "platform/utils.h" 10 #include "platform/utils.h"
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2386 kDeoptIdEntry = 2, // Deopt id. 2386 kDeoptIdEntry = 2, // Deopt id.
2387 kTokenPosEntry = 3, // Token position in source. 2387 kTokenPosEntry = 3, // Token position in source.
2388 kTryIndexEntry = 4, // Try block index. 2388 kTryIndexEntry = 4, // Try block index.
2389 // We would potentially be adding other objects here like 2389 // We would potentially be adding other objects here like
2390 // pointer maps for optimized functions, local variables information etc. 2390 // pointer maps for optimized functions, local variables information etc.
2391 kNumberOfEntries = 5, 2391 kNumberOfEntries = 5,
2392 }; 2392 };
2393 2393
2394 public: 2394 public:
2395 enum Kind { 2395 enum Kind {
2396 kDeoptBefore = 0, // Deoptimization continuation point before instruction. 2396 kDeopt, // Deoptimization continuation point.
2397 kDeoptAfter, // Deoptimization continuation point after instruction.
2398 kEntryPatch, // Location where to patch entry. 2397 kEntryPatch, // Location where to patch entry.
2399 kPatchCode, // Buffer for patching code entry. 2398 kPatchCode, // Buffer for patching code entry.
2400 kLazyDeoptJump, // Lazy deoptimization trampoline. 2399 kLazyDeoptJump, // Lazy deoptimization trampoline.
2401 kIcCall, // IC call. 2400 kIcCall, // IC call.
2402 kFuncCall, // Call to known target, e.g. static call, closure call. 2401 kFuncCall, // Call to known target, e.g. static call, closure call.
2403 kReturn, // Return from function. 2402 kReturn, // Return from function.
2404 kOther 2403 kOther
2405 }; 2404 };
2406 2405
2407 intptr_t Length() const; 2406 intptr_t Length() const;
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2803 2802
2804 int32_t GetPointerOffsetAt(int index) const { 2803 int32_t GetPointerOffsetAt(int index) const {
2805 return *PointerOffsetAddrAt(index); 2804 return *PointerOffsetAddrAt(index);
2806 } 2805 }
2807 intptr_t GetTokenIndexOfPC(uword pc) const; 2806 intptr_t GetTokenIndexOfPC(uword pc) const;
2808 2807
2809 // Find pc, return 0 if not found. 2808 // Find pc, return 0 if not found.
2810 uword GetPatchCodePc() const; 2809 uword GetPatchCodePc() const;
2811 uword GetLazyDeoptPc() const; 2810 uword GetLazyDeoptPc() const;
2812 2811
2813 uword GetDeoptBeforePcAtDeoptId(intptr_t deopt_id) const;
2814 uword GetDeoptAfterPcAtDeoptId(intptr_t deopt_id) const;
2815
2816 uword GetPcForDeoptId(intptr_t deopt_id, PcDescriptors::Kind kind) const; 2812 uword GetPcForDeoptId(intptr_t deopt_id, PcDescriptors::Kind kind) const;
2817 2813
2818 // Returns true if there is an object in the code between 'start_offset' 2814 // Returns true if there is an object in the code between 'start_offset'
2819 // (inclusive) and 'end_offset' (exclusive). 2815 // (inclusive) and 'end_offset' (exclusive).
2820 bool ObjectExistsInArea(intptr_t start_offest, intptr_t end_offset) const; 2816 bool ObjectExistsInArea(intptr_t start_offest, intptr_t end_offset) const;
2821 2817
2822 // Each (*node_ids)[n] has a an extracted ic data array (*arrays)[n]. 2818 // Each (*node_ids)[n] has a an extracted ic data array (*arrays)[n].
2823 // Returns the maximum id found. 2819 // Returns the maximum id found.
2824 intptr_t ExtractIcDataArraysAtCalls( 2820 intptr_t ExtractIcDataArraysAtCalls(
2825 GrowableArray<intptr_t>* node_ids, 2821 GrowableArray<intptr_t>* node_ids,
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5567 5563
5568 5564
5569 RawObject* MegamorphicCache::GetTargetFunction(const Array& array, 5565 RawObject* MegamorphicCache::GetTargetFunction(const Array& array,
5570 intptr_t index) { 5566 intptr_t index) {
5571 return array.At((index * kEntryLength) + kTargetFunctionIndex); 5567 return array.At((index * kEntryLength) + kTargetFunctionIndex);
5572 } 5568 }
5573 5569
5574 } // namespace dart 5570 } // namespace dart
5575 5571
5576 #endif // VM_OBJECT_H_ 5572 #endif // VM_OBJECT_H_
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