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| 1 // Copyright 2014 the V8 project authors. All rights reserved. | 1 // Copyright 2014 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 "src/compiler/instruction-selector-impl.h" | 5 #include "src/compiler/instruction-selector-impl.h" | 
| 6 #include "src/compiler/node-matchers.h" | 6 #include "src/compiler/node-matchers.h" | 
| 7 | 7 | 
| 8 namespace v8 { | 8 namespace v8 { | 
| 9 namespace internal { | 9 namespace internal { | 
| 10 namespace compiler { | 10 namespace compiler { | 
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| 591     frame_state_descriptor = | 591     frame_state_descriptor = | 
| 592         GetFrameStateDescriptor(call->InputAt(descriptor->InputCount())); | 592         GetFrameStateDescriptor(call->InputAt(descriptor->InputCount())); | 
| 593   } | 593   } | 
| 594 | 594 | 
| 595   CallBuffer buffer(zone(), descriptor, frame_state_descriptor); | 595   CallBuffer buffer(zone(), descriptor, frame_state_descriptor); | 
| 596 | 596 | 
| 597   // Compute InstructionOperands for inputs and outputs. | 597   // Compute InstructionOperands for inputs and outputs. | 
| 598   // TODO(turbofan): on ARM64 it's probably better to use the code object in a | 598   // TODO(turbofan): on ARM64 it's probably better to use the code object in a | 
| 599   // register if there are multiple uses of it. Improve constant pool and the | 599   // register if there are multiple uses of it. Improve constant pool and the | 
| 600   // heuristics in the register allocator for where to emit constants. | 600   // heuristics in the register allocator for where to emit constants. | 
| 601   InitializeCallBuffer(call, &buffer, true, false, continuation, | 601   InitializeCallBuffer(call, &buffer, true, false); | 
| 602                        deoptimization); |  | 
| 603 | 602 | 
| 604   // Push the arguments to the stack. | 603   // Push the arguments to the stack. | 
| 605   bool is_c_frame = descriptor->kind() == CallDescriptor::kCallAddress; | 604   bool is_c_frame = descriptor->kind() == CallDescriptor::kCallAddress; | 
| 606   bool pushed_count_uneven = buffer.pushed_nodes.size() & 1; | 605   bool pushed_count_uneven = buffer.pushed_nodes.size() & 1; | 
| 607   int aligned_push_count = buffer.pushed_nodes.size(); | 606   int aligned_push_count = buffer.pushed_nodes.size(); | 
| 608   if (is_c_frame && pushed_count_uneven) { | 607   if (is_c_frame && pushed_count_uneven) { | 
| 609     aligned_push_count++; | 608     aligned_push_count++; | 
| 610   } | 609   } | 
| 611   // TODO(dcarney): claim and poke probably take small immediates, | 610   // TODO(dcarney): claim and poke probably take small immediates, | 
| 612   //                loop here or whatever. | 611   //                loop here or whatever. | 
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| 667   // Caller clean up of stack for C-style calls. | 666   // Caller clean up of stack for C-style calls. | 
| 668   if (is_c_frame && aligned_push_count > 0) { | 667   if (is_c_frame && aligned_push_count > 0) { | 
| 669     DCHECK(deoptimization == NULL && continuation == NULL); | 668     DCHECK(deoptimization == NULL && continuation == NULL); | 
| 670     Emit(kArchDrop | MiscField::encode(aligned_push_count), NULL); | 669     Emit(kArchDrop | MiscField::encode(aligned_push_count), NULL); | 
| 671   } | 670   } | 
| 672 } | 671 } | 
| 673 | 672 | 
| 674 }  // namespace compiler | 673 }  // namespace compiler | 
| 675 }  // namespace internal | 674 }  // namespace internal | 
| 676 }  // namespace v8 | 675 }  // namespace v8 | 
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