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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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569 __ Push(Smi::FromInt(static_cast<int>(type))); 569 __ Push(Smi::FromInt(static_cast<int>(type)));
570 570
571 __ CallRuntime(Runtime::kNotifyDeoptimized, 1); 571 __ CallRuntime(Runtime::kNotifyDeoptimized, 1);
572 // Tear down temporary frame. 572 // Tear down temporary frame.
573 __ LeaveInternalFrame(); 573 __ LeaveInternalFrame();
574 574
575 // Get the full codegen state from the stack and untag it. 575 // Get the full codegen state from the stack and untag it.
576 __ SmiToInteger32(rcx, Operand(rsp, 1 * kPointerSize)); 576 __ SmiToInteger32(rcx, Operand(rsp, 1 * kPointerSize));
577 577
578 // Switch on the state. 578 // Switch on the state.
579 NearLabel not_no_registers, not_tos_rax; 579 Label not_no_registers, not_tos_rax;
580 __ cmpq(rcx, Immediate(FullCodeGenerator::NO_REGISTERS)); 580 __ cmpq(rcx, Immediate(FullCodeGenerator::NO_REGISTERS));
581 __ j(not_equal, &not_no_registers); 581 __ j(not_equal, &not_no_registers, Label::kNear);
582 __ ret(1 * kPointerSize); // Remove state. 582 __ ret(1 * kPointerSize); // Remove state.
583 583
584 __ bind(&not_no_registers); 584 __ bind(&not_no_registers);
585 __ movq(rax, Operand(rsp, 2 * kPointerSize)); 585 __ movq(rax, Operand(rsp, 2 * kPointerSize));
586 __ cmpq(rcx, Immediate(FullCodeGenerator::TOS_REG)); 586 __ cmpq(rcx, Immediate(FullCodeGenerator::TOS_REG));
587 __ j(not_equal, &not_tos_rax); 587 __ j(not_equal, &not_tos_rax, Label::kNear);
588 __ ret(2 * kPointerSize); // Remove state, rax. 588 __ ret(2 * kPointerSize); // Remove state, rax.
589 589
590 __ bind(&not_tos_rax); 590 __ bind(&not_tos_rax);
591 __ Abort("no cases left"); 591 __ Abort("no cases left");
592 } 592 }
593 593
594 void Builtins::Generate_NotifyDeoptimized(MacroAssembler* masm) { 594 void Builtins::Generate_NotifyDeoptimized(MacroAssembler* masm) {
595 Generate_NotifyDeoptimizedHelper(masm, Deoptimizer::EAGER); 595 Generate_NotifyDeoptimizedHelper(masm, Deoptimizer::EAGER);
596 } 596 }
597 597
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1467 1467
1468 // Pass the function to optimize as the argument to the on-stack 1468 // Pass the function to optimize as the argument to the on-stack
1469 // replacement runtime function. 1469 // replacement runtime function.
1470 __ EnterInternalFrame(); 1470 __ EnterInternalFrame();
1471 __ push(rax); 1471 __ push(rax);
1472 __ CallRuntime(Runtime::kCompileForOnStackReplacement, 1); 1472 __ CallRuntime(Runtime::kCompileForOnStackReplacement, 1);
1473 __ LeaveInternalFrame(); 1473 __ LeaveInternalFrame();
1474 1474
1475 // If the result was -1 it means that we couldn't optimize the 1475 // If the result was -1 it means that we couldn't optimize the
1476 // function. Just return and continue in the unoptimized version. 1476 // function. Just return and continue in the unoptimized version.
1477 NearLabel skip; 1477 Label skip;
1478 __ SmiCompare(rax, Smi::FromInt(-1)); 1478 __ SmiCompare(rax, Smi::FromInt(-1));
1479 __ j(not_equal, &skip); 1479 __ j(not_equal, &skip, Label::kNear);
1480 __ ret(0); 1480 __ ret(0);
1481 1481
1482 // If we decide not to perform on-stack replacement we perform a 1482 // If we decide not to perform on-stack replacement we perform a
1483 // stack guard check to enable interrupts. 1483 // stack guard check to enable interrupts.
1484 __ bind(&stack_check); 1484 __ bind(&stack_check);
1485 NearLabel ok; 1485 Label ok;
1486 __ CompareRoot(rsp, Heap::kStackLimitRootIndex); 1486 __ CompareRoot(rsp, Heap::kStackLimitRootIndex);
1487 __ j(above_equal, &ok); 1487 __ j(above_equal, &ok, Label::kNear);
1488 1488
1489 StackCheckStub stub; 1489 StackCheckStub stub;
1490 __ TailCallStub(&stub); 1490 __ TailCallStub(&stub);
1491 __ Abort("Unreachable code: returned from tail call."); 1491 __ Abort("Unreachable code: returned from tail call.");
1492 __ bind(&ok); 1492 __ bind(&ok);
1493 __ ret(0); 1493 __ ret(0);
1494 1494
1495 __ bind(&skip); 1495 __ bind(&skip);
1496 // Untag the AST id and push it on the stack. 1496 // Untag the AST id and push it on the stack.
1497 __ SmiToInteger32(rax, rax); 1497 __ SmiToInteger32(rax, rax);
1498 __ push(rax); 1498 __ push(rax);
1499 1499
1500 // Generate the code for doing the frame-to-frame translation using 1500 // Generate the code for doing the frame-to-frame translation using
1501 // the deoptimizer infrastructure. 1501 // the deoptimizer infrastructure.
1502 Deoptimizer::EntryGenerator generator(masm, Deoptimizer::OSR); 1502 Deoptimizer::EntryGenerator generator(masm, Deoptimizer::OSR);
1503 generator.Generate(); 1503 generator.Generate();
1504 } 1504 }
1505 1505
1506 1506
1507 #undef __ 1507 #undef __
1508 1508
1509 } } // namespace v8::internal 1509 } } // namespace v8::internal
1510 1510
1511 #endif // V8_TARGET_ARCH_X64 1511 #endif // V8_TARGET_ARCH_X64
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