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Issue 6928060: Merge Label and NearLabel (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: address comments Created 9 years, 7 months ago
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1 // Copyright 2011 the V8 project authors. All rights reserved. 1 // Copyright 2011 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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513 __ CallRuntime(Runtime::kNotifyDeoptimized, 1); 513 __ CallRuntime(Runtime::kNotifyDeoptimized, 1);
514 514
515 // Tear down temporary frame. 515 // Tear down temporary frame.
516 __ LeaveInternalFrame(); 516 __ LeaveInternalFrame();
517 517
518 // Get the full codegen state from the stack and untag it. 518 // Get the full codegen state from the stack and untag it.
519 __ mov(ecx, Operand(esp, 1 * kPointerSize)); 519 __ mov(ecx, Operand(esp, 1 * kPointerSize));
520 __ SmiUntag(ecx); 520 __ SmiUntag(ecx);
521 521
522 // Switch on the state. 522 // Switch on the state.
523 NearLabel not_no_registers, not_tos_eax; 523 Label not_no_registers, not_tos_eax;
524 __ cmp(ecx, FullCodeGenerator::NO_REGISTERS); 524 __ cmp(ecx, FullCodeGenerator::NO_REGISTERS);
525 __ j(not_equal, &not_no_registers); 525 __ j(not_equal, &not_no_registers, Label::kNear);
526 __ ret(1 * kPointerSize); // Remove state. 526 __ ret(1 * kPointerSize); // Remove state.
527 527
528 __ bind(&not_no_registers); 528 __ bind(&not_no_registers);
529 __ mov(eax, Operand(esp, 2 * kPointerSize)); 529 __ mov(eax, Operand(esp, 2 * kPointerSize));
530 __ cmp(ecx, FullCodeGenerator::TOS_REG); 530 __ cmp(ecx, FullCodeGenerator::TOS_REG);
531 __ j(not_equal, &not_tos_eax); 531 __ j(not_equal, &not_tos_eax, Label::kNear);
532 __ ret(2 * kPointerSize); // Remove state, eax. 532 __ ret(2 * kPointerSize); // Remove state, eax.
533 533
534 __ bind(&not_tos_eax); 534 __ bind(&not_tos_eax);
535 __ Abort("no cases left"); 535 __ Abort("no cases left");
536 } 536 }
537 537
538 538
539 void Builtins::Generate_NotifyDeoptimized(MacroAssembler* masm) { 539 void Builtins::Generate_NotifyDeoptimized(MacroAssembler* masm) {
540 Generate_NotifyDeoptimizedHelper(masm, Deoptimizer::EAGER); 540 Generate_NotifyDeoptimizedHelper(masm, Deoptimizer::EAGER);
541 } 541 }
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1570 1570
1571 // Pass the function to optimize as the argument to the on-stack 1571 // Pass the function to optimize as the argument to the on-stack
1572 // replacement runtime function. 1572 // replacement runtime function.
1573 __ EnterInternalFrame(); 1573 __ EnterInternalFrame();
1574 __ push(eax); 1574 __ push(eax);
1575 __ CallRuntime(Runtime::kCompileForOnStackReplacement, 1); 1575 __ CallRuntime(Runtime::kCompileForOnStackReplacement, 1);
1576 __ LeaveInternalFrame(); 1576 __ LeaveInternalFrame();
1577 1577
1578 // If the result was -1 it means that we couldn't optimize the 1578 // If the result was -1 it means that we couldn't optimize the
1579 // function. Just return and continue in the unoptimized version. 1579 // function. Just return and continue in the unoptimized version.
1580 NearLabel skip; 1580 Label skip;
1581 __ cmp(Operand(eax), Immediate(Smi::FromInt(-1))); 1581 __ cmp(Operand(eax), Immediate(Smi::FromInt(-1)));
1582 __ j(not_equal, &skip); 1582 __ j(not_equal, &skip, Label::kNear);
1583 __ ret(0); 1583 __ ret(0);
1584 1584
1585 // If we decide not to perform on-stack replacement we perform a 1585 // If we decide not to perform on-stack replacement we perform a
1586 // stack guard check to enable interrupts. 1586 // stack guard check to enable interrupts.
1587 __ bind(&stack_check); 1587 __ bind(&stack_check);
1588 NearLabel ok; 1588 Label ok;
1589 ExternalReference stack_limit = 1589 ExternalReference stack_limit =
1590 ExternalReference::address_of_stack_limit(masm->isolate()); 1590 ExternalReference::address_of_stack_limit(masm->isolate());
1591 __ cmp(esp, Operand::StaticVariable(stack_limit)); 1591 __ cmp(esp, Operand::StaticVariable(stack_limit));
1592 __ j(above_equal, &ok, taken); 1592 __ j(above_equal, &ok, taken, Label::kNear);
1593 StackCheckStub stub; 1593 StackCheckStub stub;
1594 __ TailCallStub(&stub); 1594 __ TailCallStub(&stub);
1595 __ Abort("Unreachable code: returned from tail call."); 1595 __ Abort("Unreachable code: returned from tail call.");
1596 __ bind(&ok); 1596 __ bind(&ok);
1597 __ ret(0); 1597 __ ret(0);
1598 1598
1599 __ bind(&skip); 1599 __ bind(&skip);
1600 // Untag the AST id and push it on the stack. 1600 // Untag the AST id and push it on the stack.
1601 __ SmiUntag(eax); 1601 __ SmiUntag(eax);
1602 __ push(eax); 1602 __ push(eax);
1603 1603
1604 // Generate the code for doing the frame-to-frame translation using 1604 // Generate the code for doing the frame-to-frame translation using
1605 // the deoptimizer infrastructure. 1605 // the deoptimizer infrastructure.
1606 Deoptimizer::EntryGenerator generator(masm, Deoptimizer::OSR); 1606 Deoptimizer::EntryGenerator generator(masm, Deoptimizer::OSR);
1607 generator.Generate(); 1607 generator.Generate();
1608 } 1608 }
1609 1609
1610 1610
1611 #undef __ 1611 #undef __
1612 } 1612 }
1613 } // namespace v8::internal 1613 } // namespace v8::internal
1614 1614
1615 #endif // V8_TARGET_ARCH_IA32 1615 #endif // V8_TARGET_ARCH_IA32
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