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Issue 11366076: Remove special meaning when usage counter reaches the threshold. (Closed) Base URL: http://dart.googlecode.com/svn/branches/bleeding_edge/dart/
Patch Set: Created 8 years, 1 month 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 #include "vm/globals.h" // Needed here to get TARGET_ARCH_IA32. 5 #include "vm/globals.h" // Needed here to get TARGET_ARCH_IA32.
6 #if defined(TARGET_ARCH_IA32) 6 #if defined(TARGET_ARCH_IA32)
7 7
8 #include "vm/intermediate_language.h" 8 #include "vm/intermediate_language.h"
9 9
10 #include "lib/error.h" 10 #include "lib/error.h"
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53 // collection and counting stub. 53 // collection and counting stub.
54 const Function& function = 54 const Function& function =
55 Function::ZoneHandle(compiler->parsed_function().function().raw()); 55 Function::ZoneHandle(compiler->parsed_function().function().raw());
56 __ LoadObject(temp, function); 56 __ LoadObject(temp, function);
57 __ incl(FieldAddress(temp, Function::usage_counter_offset())); 57 __ incl(FieldAddress(temp, Function::usage_counter_offset()));
58 if (FlowGraphCompiler::CanOptimize() && 58 if (FlowGraphCompiler::CanOptimize() &&
59 compiler->parsed_function().function().is_optimizable()) { 59 compiler->parsed_function().function().is_optimizable()) {
60 // Do not optimize if usage count must be reported. 60 // Do not optimize if usage count must be reported.
61 __ cmpl(FieldAddress(temp, Function::usage_counter_offset()), 61 __ cmpl(FieldAddress(temp, Function::usage_counter_offset()),
62 Immediate(FLAG_optimization_counter_threshold)); 62 Immediate(FLAG_optimization_counter_threshold));
63 Label not_yet_hot, already_optimized; 63 Label not_yet_hot;
64 __ j(LESS, &not_yet_hot, Assembler::kNearJump); 64 __ j(LESS, &not_yet_hot, Assembler::kNearJump);
65 __ j(GREATER, &already_optimized, Assembler::kNearJump);
66 __ pushl(result); // Preserve result. 65 __ pushl(result); // Preserve result.
67 __ pushl(temp); // Argument for runtime: function to optimize. 66 __ pushl(temp); // Argument for runtime: function to optimize.
68 __ CallRuntime(kOptimizeInvokedFunctionRuntimeEntry); 67 __ CallRuntime(kOptimizeInvokedFunctionRuntimeEntry);
69 __ popl(temp); // Remove argument. 68 __ popl(temp); // Remove argument.
70 __ popl(result); // Restore result. 69 __ popl(result); // Restore result.
71 __ Bind(&not_yet_hot); 70 __ Bind(&not_yet_hot);
72 __ Bind(&already_optimized);
73 } 71 }
74 } 72 }
75 if (FLAG_trace_functions) { 73 if (FLAG_trace_functions) {
76 const Function& function = 74 const Function& function =
77 Function::ZoneHandle(compiler->parsed_function().function().raw()); 75 Function::ZoneHandle(compiler->parsed_function().function().raw());
78 __ LoadObject(temp, function); 76 __ LoadObject(temp, function);
79 __ pushl(result); // Preserve result. 77 __ pushl(result); // Preserve result.
80 __ pushl(temp); 78 __ pushl(temp);
81 compiler->GenerateCallRuntime(0, 79 compiler->GenerateCallRuntime(0,
82 kTraceFunctionExitRuntimeEntry, 80 kTraceFunctionExitRuntimeEntry,
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2729 __ pcmpeqq(XMM0, XMM0); // Generate all 1's. 2727 __ pcmpeqq(XMM0, XMM0); // Generate all 1's.
2730 __ pxor(value, XMM0); 2728 __ pxor(value, XMM0);
2731 } 2729 }
2732 2730
2733 2731
2734 } // namespace dart 2732 } // namespace dart
2735 2733
2736 #undef __ 2734 #undef __
2737 2735
2738 #endif // defined TARGET_ARCH_X64 2736 #endif // defined TARGET_ARCH_X64
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