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Issue 143493006: A64: Eliminate static initializers (Closed) Base URL: https://v8.googlecode.com/svn/branches/experimental/a64
Patch Set: updates Created 6 years, 10 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 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
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33 namespace v8 { 33 namespace v8 {
34 namespace internal { 34 namespace internal {
35 35
36 // We use the root register to spill a value while breaking a cycle in parallel 36 // We use the root register to spill a value while breaking a cycle in parallel
37 // moves. We don't need access to roots while resolving the move list and using 37 // moves. We don't need access to roots while resolving the move list and using
38 // the root register has two advantages: 38 // the root register has two advantages:
39 // - It is not in crankshaft allocatable registers list, so it can't interfere 39 // - It is not in crankshaft allocatable registers list, so it can't interfere
40 // with any of the moves we are resolving. 40 // with any of the moves we are resolving.
41 // - We don't need to push it on the stack, as we can reload it with its value 41 // - We don't need to push it on the stack, as we can reload it with its value
42 // once we have resolved a cycle. 42 // once we have resolved a cycle.
43 const Register LGapResolver::kSavedValue = root; 43 #define kSavedValue root
44
45 44
46 LGapResolver::LGapResolver(LCodeGen* owner) 45 LGapResolver::LGapResolver(LCodeGen* owner)
47 : cgen_(owner), moves_(32, owner->zone()), root_index_(0), in_cycle_(false), 46 : cgen_(owner), moves_(32, owner->zone()), root_index_(0), in_cycle_(false),
48 saved_destination_(NULL), need_to_restore_root_(false) { } 47 saved_destination_(NULL), need_to_restore_root_(false) { }
49 48
50 49
51 #define __ ACCESS_MASM(cgen_->masm()) 50 #define __ ACCESS_MASM(cgen_->masm())
52 51
53 void LGapResolver::Resolve(LParallelMove* parallel_move) { 52 void LGapResolver::Resolve(LParallelMove* parallel_move) {
54 ASSERT(moves_.is_empty()); 53 ASSERT(moves_.is_empty());
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317 LOperand* src = moves_[index].source(); 316 LOperand* src = moves_[index].source();
318 LOperand* dst = moves_[index].destination(); 317 LOperand* dst = moves_[index].destination();
319 318
320 ASSERT(src->IsStackSlot()); 319 ASSERT(src->IsStackSlot());
321 ASSERT(dst->IsStackSlot()); 320 ASSERT(dst->IsStackSlot());
322 __ Ldr(temp, cgen_->ToMemOperand(src)); 321 __ Ldr(temp, cgen_->ToMemOperand(src));
323 __ Str(temp, cgen_->ToMemOperand(dst)); 322 __ Str(temp, cgen_->ToMemOperand(dst));
324 } 323 }
325 324
326 } } // namespace v8::internal 325 } } // namespace v8::internal
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