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Issue 1512513002: VM: Don't inline array allocation in precompiled code (Closed) Base URL: git@github.com:dart-lang/sdk.git@master
Patch Set: Created 5 years ago
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1 // Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file 1 // Copyright (c) 2014, 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 #include "vm/globals.h" // Needed here to get TARGET_ARCH_ARM64. 5 #include "vm/globals.h" // Needed here to get TARGET_ARCH_ARM64.
6 #if defined(TARGET_ARCH_ARM64) 6 #if defined(TARGET_ARCH_ARM64)
7 7
8 #include "vm/intermediate_language.h" 8 #include "vm/intermediate_language.h"
9 9
10 #include "vm/compiler.h"
10 #include "vm/dart_entry.h" 11 #include "vm/dart_entry.h"
11 #include "vm/flow_graph.h" 12 #include "vm/flow_graph.h"
12 #include "vm/flow_graph_compiler.h" 13 #include "vm/flow_graph_compiler.h"
13 #include "vm/flow_graph_range_analysis.h" 14 #include "vm/flow_graph_range_analysis.h"
14 #include "vm/locations.h" 15 #include "vm/locations.h"
15 #include "vm/object_store.h" 16 #include "vm/object_store.h"
16 #include "vm/parser.h" 17 #include "vm/parser.h"
17 #include "vm/simulator.h" 18 #include "vm/simulator.h"
18 #include "vm/stack_frame.h" 19 #include "vm/stack_frame.h"
19 #include "vm/stub_code.h" 20 #include "vm/stub_code.h"
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2095 2096
2096 void CreateArrayInstr::EmitNativeCode(FlowGraphCompiler* compiler) { 2097 void CreateArrayInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
2097 const Register kLengthReg = R2; 2098 const Register kLengthReg = R2;
2098 const Register kElemTypeReg = R1; 2099 const Register kElemTypeReg = R1;
2099 const Register kResultReg = R0; 2100 const Register kResultReg = R0;
2100 2101
2101 ASSERT(locs()->in(kElementTypePos).reg() == kElemTypeReg); 2102 ASSERT(locs()->in(kElementTypePos).reg() == kElemTypeReg);
2102 ASSERT(locs()->in(kLengthPos).reg() == kLengthReg); 2103 ASSERT(locs()->in(kLengthPos).reg() == kLengthReg);
2103 2104
2104 if (compiler->is_optimizing() && 2105 if (compiler->is_optimizing() &&
2106 !Compiler::always_optimize() &&
2105 num_elements()->BindsToConstant() && 2107 num_elements()->BindsToConstant() &&
2106 num_elements()->BoundConstant().IsSmi()) { 2108 num_elements()->BoundConstant().IsSmi()) {
2107 const intptr_t length = Smi::Cast(num_elements()->BoundConstant()).Value(); 2109 const intptr_t length = Smi::Cast(num_elements()->BoundConstant()).Value();
2108 if ((length >= 0) && (length <= Array::kMaxElements)) { 2110 if ((length >= 0) && (length <= Array::kMaxElements)) {
2109 Label slow_path, done; 2111 Label slow_path, done;
2110 InlineArrayAllocation(compiler, length, &slow_path, &done); 2112 InlineArrayAllocation(compiler, length, &slow_path, &done);
2111 __ Bind(&slow_path); 2113 __ Bind(&slow_path);
2112 __ PushObject(Object::null_object()); // Make room for the result. 2114 __ PushObject(Object::null_object()); // Make room for the result.
2113 __ Push(kLengthReg); // length. 2115 __ Push(kLengthReg); // length.
2114 __ Push(kElemTypeReg); 2116 __ Push(kElemTypeReg);
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5623 1, 5625 1,
5624 locs()); 5626 locs());
5625 __ Drop(1); 5627 __ Drop(1);
5626 __ Pop(result); 5628 __ Pop(result);
5627 } 5629 }
5628 5630
5629 5631
5630 } // namespace dart 5632 } // namespace dart
5631 5633
5632 #endif // defined TARGET_ARCH_ARM64 5634 #endif // defined TARGET_ARCH_ARM64
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