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Issue 2163006: ARM: Update the full compiler to handle all code... (Closed) Base URL: http://v8.googlecode.com/svn/branches/bleeding_edge/
Patch Set: '' Created 10 years, 7 months ago
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1 // Copyright 2010 the V8 project authors. All rights reserved. 1 // Copyright 2010 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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37 #include "flow-graph.h" 37 #include "flow-graph.h"
38 #include "full-codegen.h" 38 #include "full-codegen.h"
39 #include "liveedit.h" 39 #include "liveedit.h"
40 #include "oprofile-agent.h" 40 #include "oprofile-agent.h"
41 #include "rewriter.h" 41 #include "rewriter.h"
42 #include "scopes.h" 42 #include "scopes.h"
43 43
44 namespace v8 { 44 namespace v8 {
45 namespace internal { 45 namespace internal {
46 46
47 // For normal operation the syntax checker is used to determine whether to
48 // use the full compiler for top level code or not. However if the flag
49 // --always-full-compiler is specified or debugging is active the full
50 // compiler will be used for all code.
51 static bool AlwaysFullCompiler() {
52 #ifdef ENABLE_DEBUGGER_SUPPORT
53 return FLAG_always_full_compiler || Debugger::IsDebuggerActive();
54 #else
55 return FLAG_always_full_compiler;
56 #endif
57 }
58
47 59
48 static Handle<Code> MakeCode(Handle<Context> context, CompilationInfo* info) { 60 static Handle<Code> MakeCode(Handle<Context> context, CompilationInfo* info) {
49 FunctionLiteral* function = info->function(); 61 FunctionLiteral* function = info->function();
50 ASSERT(function != NULL); 62 ASSERT(function != NULL);
51 // Rewrite the AST by introducing .result assignments where needed. 63 // Rewrite the AST by introducing .result assignments where needed.
52 if (!Rewriter::Process(function)) { 64 if (!Rewriter::Process(function)) {
53 // Signal a stack overflow by returning a null handle. The stack 65 // Signal a stack overflow by returning a null handle. The stack
54 // overflow exception will be thrown by the caller. 66 // overflow exception will be thrown by the caller.
55 return Handle<Code>::null(); 67 return Handle<Code>::null();
56 } 68 }
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113 // The normal choice of backend can be overridden with the flags 125 // The normal choice of backend can be overridden with the flags
114 // --always-full-compiler and --always-fast-compiler, which are mutually 126 // --always-full-compiler and --always-fast-compiler, which are mutually
115 // incompatible. 127 // incompatible.
116 CHECK(!FLAG_always_full_compiler || !FLAG_always_fast_compiler); 128 CHECK(!FLAG_always_full_compiler || !FLAG_always_fast_compiler);
117 129
118 Handle<SharedFunctionInfo> shared = info->shared_info(); 130 Handle<SharedFunctionInfo> shared = info->shared_info();
119 bool is_run_once = (shared.is_null()) 131 bool is_run_once = (shared.is_null())
120 ? info->scope()->is_global_scope() 132 ? info->scope()->is_global_scope()
121 : (shared->is_toplevel() || shared->try_full_codegen()); 133 : (shared->is_toplevel() || shared->try_full_codegen());
122 134
123 bool force_full_compiler = false; 135 if (AlwaysFullCompiler()) {
124 #if defined(V8_TARGET_ARCH_IA32) || defined(V8_TARGET_ARCH_X64)
125 // On ia32 the full compiler can compile all code whereas the other platforms
126 // the constructs supported is checked by the associated syntax checker. When
127 // --always-full-compiler is used on ia32 the syntax checker is still in
128 // effect, but there is a special flag --force-full-compiler to ignore the
129 // syntax checker completely and use the full compiler for all code. Also
130 // when debugging on ia32 the full compiler will be used for all code.
131 force_full_compiler =
132 Debugger::IsDebuggerActive() || FLAG_force_full_compiler;
133 #endif
134
135 if (force_full_compiler) {
136 return FullCodeGenerator::MakeCode(info); 136 return FullCodeGenerator::MakeCode(info);
137 } else if (FLAG_always_full_compiler || (FLAG_full_compiler && is_run_once)) { 137 } else if (FLAG_full_compiler && is_run_once) {
138 FullCodeGenSyntaxChecker checker; 138 FullCodeGenSyntaxChecker checker;
139 checker.Check(function); 139 checker.Check(function);
140 if (checker.has_supported_syntax()) { 140 if (checker.has_supported_syntax()) {
141 return FullCodeGenerator::MakeCode(info); 141 return FullCodeGenerator::MakeCode(info);
142 } 142 }
143 } else if (FLAG_always_fast_compiler || 143 } else if (FLAG_always_fast_compiler ||
144 (FLAG_fast_compiler && !is_run_once)) { 144 (FLAG_fast_compiler && !is_run_once)) {
145 FastCodeGenSyntaxChecker checker; 145 FastCodeGenSyntaxChecker checker;
146 checker.Check(info); 146 checker.Check(info);
147 if (checker.has_supported_syntax()) { 147 if (checker.has_supported_syntax()) {
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514 } 514 }
515 515
516 // Generate code and return it. The way that the compilation mode 516 // Generate code and return it. The way that the compilation mode
517 // is controlled by the command-line flags is described in 517 // is controlled by the command-line flags is described in
518 // the static helper function MakeCode. 518 // the static helper function MakeCode.
519 CompilationInfo info(literal, script, false); 519 CompilationInfo info(literal, script, false);
520 520
521 CHECK(!FLAG_always_full_compiler || !FLAG_always_fast_compiler); 521 CHECK(!FLAG_always_full_compiler || !FLAG_always_fast_compiler);
522 bool is_run_once = literal->try_full_codegen(); 522 bool is_run_once = literal->try_full_codegen();
523 bool is_compiled = false; 523 bool is_compiled = false;
524 if (FLAG_always_full_compiler || (FLAG_full_compiler && is_run_once)) { 524
525 if (AlwaysFullCompiler()) {
526 code = FullCodeGenerator::MakeCode(&info);
527 is_compiled = true;
528 } else if (FLAG_full_compiler && is_run_once) {
525 FullCodeGenSyntaxChecker checker; 529 FullCodeGenSyntaxChecker checker;
526 checker.Check(literal); 530 checker.Check(literal);
527 if (checker.has_supported_syntax()) { 531 if (checker.has_supported_syntax()) {
528 code = FullCodeGenerator::MakeCode(&info); 532 code = FullCodeGenerator::MakeCode(&info);
529 is_compiled = true; 533 is_compiled = true;
530 } 534 }
531 } else if (FLAG_always_fast_compiler || 535 } else if (FLAG_always_fast_compiler ||
532 (FLAG_fast_compiler && !is_run_once)) { 536 (FLAG_fast_compiler && !is_run_once)) {
533 // Since we are not lazily compiling we do not have a receiver to 537 // Since we are not lazily compiling we do not have a receiver to
534 // specialize for. 538 // specialize for.
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628 PROFILE(CodeCreateEvent(Logger::ToNativeByScript(tag, *script), 632 PROFILE(CodeCreateEvent(Logger::ToNativeByScript(tag, *script),
629 *code, *func_name)); 633 *code, *func_name));
630 OPROFILE(CreateNativeCodeRegion(*func_name, 634 OPROFILE(CreateNativeCodeRegion(*func_name,
631 code->instruction_start(), 635 code->instruction_start(),
632 code->instruction_size())); 636 code->instruction_size()));
633 } 637 }
634 } 638 }
635 } 639 }
636 640
637 } } // namespace v8::internal 641 } } // namespace v8::internal
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