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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 #include "hydrogen-check-elimination.h" | 5 #include "hydrogen-check-elimination.h" |
6 | 6 |
7 #include "hydrogen-alias-analysis.h" | 7 #include "hydrogen-alias-analysis.h" |
8 #include "hydrogen-flow-engine.h" | 8 #include "hydrogen-flow-engine.h" |
9 | 9 |
10 #define GLOBAL 1 | 10 #define GLOBAL 1 |
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615 | 615 |
616 // Preserve the age of the entries by moving the older entries to the end. | 616 // Preserve the age of the entries by moving the older entries to the end. |
617 if (cursor_ == size_) return; // Cursor already points at end. | 617 if (cursor_ == size_) return; // Cursor already points at end. |
618 if (cursor_ != 0) { | 618 if (cursor_ != 0) { |
619 // | L = oldest | R = newest | | | 619 // | L = oldest | R = newest | | |
620 // ^ cursor ^ size ^ MAX | 620 // ^ cursor ^ size ^ MAX |
621 HCheckTableEntry tmp_entries[kMaxTrackedObjects]; | 621 HCheckTableEntry tmp_entries[kMaxTrackedObjects]; |
622 int L = cursor_; | 622 int L = cursor_; |
623 int R = size_ - cursor_; | 623 int R = size_ - cursor_; |
624 | 624 |
625 OS::MemMove(&tmp_entries[0], &entries_[0], L * sizeof(HCheckTableEntry)); | 625 MemMove(&tmp_entries[0], &entries_[0], L * sizeof(HCheckTableEntry)); |
626 OS::MemMove(&entries_[0], &entries_[L], R * sizeof(HCheckTableEntry)); | 626 MemMove(&entries_[0], &entries_[L], R * sizeof(HCheckTableEntry)); |
627 OS::MemMove(&entries_[R], &tmp_entries[0], L * sizeof(HCheckTableEntry)); | 627 MemMove(&entries_[R], &tmp_entries[0], L * sizeof(HCheckTableEntry)); |
628 } | 628 } |
629 | 629 |
630 cursor_ = size_; // Move cursor to end. | 630 cursor_ = size_; // Move cursor to end. |
631 } | 631 } |
632 | 632 |
633 static void Print(HCheckTable* table) { | 633 static void Print(HCheckTable* table) { |
634 if (table == NULL) { | 634 if (table == NULL) { |
635 PrintF(" unreachable\n"); | 635 PrintF(" unreachable\n"); |
636 return; | 636 return; |
637 } | 637 } |
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796 PRINT_STAT(removed_cho); | 796 PRINT_STAT(removed_cho); |
797 PRINT_STAT(narrowed); | 797 PRINT_STAT(narrowed); |
798 PRINT_STAT(loads); | 798 PRINT_STAT(loads); |
799 PRINT_STAT(empty); | 799 PRINT_STAT(empty); |
800 PRINT_STAT(compares_true); | 800 PRINT_STAT(compares_true); |
801 PRINT_STAT(compares_false); | 801 PRINT_STAT(compares_false); |
802 PRINT_STAT(transitions); | 802 PRINT_STAT(transitions); |
803 } | 803 } |
804 | 804 |
805 } } // namespace v8::internal | 805 } } // namespace v8::internal |
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