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Issue 23747003: Wire up profiling budget to the Code object. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 7 years, 3 months ago
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1 // Copyright 2012 the V8 project authors. All rights reserved. 1 // Copyright 2012 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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122 // o fp: our caller's frame pointer 122 // o fp: our caller's frame pointer
123 // o sp: stack pointer 123 // o sp: stack pointer
124 // o lr: return address 124 // o lr: return address
125 // 125 //
126 // The function builds a JS frame. Please see JavaScriptFrameConstants in 126 // The function builds a JS frame. Please see JavaScriptFrameConstants in
127 // frames-arm.h for its layout. 127 // frames-arm.h for its layout.
128 void FullCodeGenerator::Generate() { 128 void FullCodeGenerator::Generate() {
129 CompilationInfo* info = info_; 129 CompilationInfo* info = info_;
130 handler_table_ = 130 handler_table_ =
131 isolate()->factory()->NewFixedArray(function()->handler_count(), TENURED); 131 isolate()->factory()->NewFixedArray(function()->handler_count(), TENURED);
132 profiling_counter_ = isolate()->factory()->NewCell( 132 profiling_budget_ = isolate()->factory()->NewCell(
133 Handle<Smi>(Smi::FromInt(FLAG_interrupt_budget), isolate())); 133 Handle<Smi>(Smi::FromInt(FLAG_interrupt_budget), isolate()));
134 SetFunctionPosition(function()); 134 SetFunctionPosition(function());
135 Comment cmnt(masm_, "[ function compiled by full code generator"); 135 Comment cmnt(masm_, "[ function compiled by full code generator");
136 136
137 ProfileEntryHookStub::MaybeCallEntryHook(masm_); 137 ProfileEntryHookStub::MaybeCallEntryHook(masm_);
138 138
139 #ifdef DEBUG 139 #ifdef DEBUG
140 if (strlen(FLAG_stop_at) > 0 && 140 if (strlen(FLAG_stop_at) > 0 &&
141 info->function()->name()->IsUtf8EqualTo(CStrVector(FLAG_stop_at))) { 141 info->function()->name()->IsUtf8EqualTo(CStrVector(FLAG_stop_at))) {
142 __ stop("stop-at"); 142 __ stop("stop-at");
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320 masm()->CheckConstPool(true, false); 320 masm()->CheckConstPool(true, false);
321 } 321 }
322 322
323 323
324 void FullCodeGenerator::ClearAccumulator() { 324 void FullCodeGenerator::ClearAccumulator() {
325 __ mov(r0, Operand(Smi::FromInt(0))); 325 __ mov(r0, Operand(Smi::FromInt(0)));
326 } 326 }
327 327
328 328
329 void FullCodeGenerator::EmitProfilingCounterDecrement(int delta) { 329 void FullCodeGenerator::EmitProfilingCounterDecrement(int delta) {
330 __ mov(r2, Operand(profiling_counter_)); 330 __ mov(r2, Operand(profiling_budget_));
331 __ ldr(r3, FieldMemOperand(r2, Cell::kValueOffset)); 331 __ ldr(r3, FieldMemOperand(r2, Cell::kValueOffset));
332 __ sub(r3, r3, Operand(Smi::FromInt(delta)), SetCC); 332 __ sub(r3, r3, Operand(Smi::FromInt(delta)), SetCC);
333 __ str(r3, FieldMemOperand(r2, Cell::kValueOffset)); 333 __ str(r3, FieldMemOperand(r2, Cell::kValueOffset));
334 } 334 }
335 335
336 336
337 void FullCodeGenerator::EmitProfilingCounterReset() { 337 void FullCodeGenerator::EmitProfilingCounterReset() {
338 int reset_value = FLAG_interrupt_budget; 338 int reset_value = FLAG_interrupt_budget;
339 if (info_->ShouldSelfOptimize() && !FLAG_retry_self_opt) { 339 if (info_->ShouldSelfOptimize() && !FLAG_retry_self_opt) {
340 // Self-optimization is a one-off thing: if it fails, don't try again. 340 // Self-optimization is a one-off thing: if it fails, don't try again.
341 reset_value = Smi::kMaxValue; 341 reset_value = Smi::kMaxValue;
342 } 342 }
343 if (isolate()->IsDebuggerActive()) { 343 if (isolate()->IsDebuggerActive()) {
344 // Detect debug break requests as soon as possible. 344 // Detect debug break requests as soon as possible.
345 reset_value = FLAG_interrupt_budget >> 4; 345 reset_value = FLAG_interrupt_budget >> 4;
346 } 346 }
347 __ mov(r2, Operand(profiling_counter_)); 347 __ mov(r2, Operand(profiling_budget_));
348 __ mov(r3, Operand(Smi::FromInt(reset_value))); 348 __ mov(r3, Operand(Smi::FromInt(reset_value)));
349 __ str(r3, FieldMemOperand(r2, Cell::kValueOffset)); 349 __ str(r3, FieldMemOperand(r2, Cell::kValueOffset));
350 } 350 }
351 351
352 352
353 void FullCodeGenerator::EmitBackEdgeBookkeeping(IterationStatement* stmt, 353 void FullCodeGenerator::EmitBackEdgeBookkeeping(IterationStatement* stmt,
354 Label* back_edge_target) { 354 Label* back_edge_target) {
355 Comment cmnt(masm_, "[ Back edge bookkeeping"); 355 Comment cmnt(masm_, "[ Back edge bookkeeping");
356 // Block literal pools whilst emitting back edge code. 356 // Block literal pools whilst emitting back edge code.
357 Assembler::BlockConstPoolScope block_const_pool(masm_); 357 Assembler::BlockConstPoolScope block_const_pool(masm_);
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4886 *context_length = 0; 4886 *context_length = 0;
4887 return previous_; 4887 return previous_;
4888 } 4888 }
4889 4889
4890 4890
4891 #undef __ 4891 #undef __
4892 4892
4893 } } // namespace v8::internal 4893 } } // namespace v8::internal
4894 4894
4895 #endif // V8_TARGET_ARCH_ARM 4895 #endif // V8_TARGET_ARCH_ARM
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