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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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762 ASSERT(environment->HasBeenRegistered()); | 762 ASSERT(environment->HasBeenRegistered()); |
763 int id = environment->deoptimization_index(); | 763 int id = environment->deoptimization_index(); |
764 ASSERT(info()->IsOptimizing() || info()->IsStub()); | 764 ASSERT(info()->IsOptimizing() || info()->IsStub()); |
765 Address entry = | 765 Address entry = |
766 Deoptimizer::GetDeoptimizationEntry(isolate(), id, bailout_type); | 766 Deoptimizer::GetDeoptimizationEntry(isolate(), id, bailout_type); |
767 if (entry == NULL) { | 767 if (entry == NULL) { |
768 Abort(kBailoutWasNotPrepared); | 768 Abort(kBailoutWasNotPrepared); |
769 return; | 769 return; |
770 } | 770 } |
771 | 771 |
772 ASSERT(FLAG_deopt_every_n_times < 2); // Other values not supported on ARM. | 772 if (FLAG_deopt_every_n_times != 0 && !info()->IsStub()) { |
773 if (FLAG_deopt_every_n_times == 1 && | 773 Register scratch = scratch0(); |
vincent.belliard.fr
2013/11/07 08:43:24
May be you can leave the case FLAG_deopt_every_n_t
| |
774 !info()->IsStub() && | 774 ExternalReference count = ExternalReference::stress_deopt_count(isolate()); |
775 info()->opt_count() == id) { | 775 |
776 ASSERT(frame_is_built_); | 776 // Store the condition on the stack if necessary |
777 __ Call(entry, RelocInfo::RUNTIME_ENTRY); | 777 if (condition != al) { |
778 return; | 778 __ mov(scratch, Operand::Zero()); |
vincent.belliard.fr
2013/11/07 08:43:24
You can also make this mov conditional (you must n
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779 __ mov(scratch, Operand(1), LeaveCC, condition); | |
780 __ push(scratch); | |
781 } | |
782 | |
783 __ push(r1); | |
784 __ mov(scratch, Operand(count)); | |
785 __ ldr(r1, MemOperand(scratch)); | |
786 __ sub(r1, r1, Operand(1), SetCC); | |
787 __ movw(r1, FLAG_deopt_every_n_times, eq); | |
788 __ str(r1, MemOperand(scratch)); | |
789 __ pop(r1); | |
790 | |
791 if (condition != al) { | |
792 // Clean up the stack before the deoptimizer call | |
793 __ pop(scratch); | |
794 } | |
795 | |
796 __ Call(entry, RelocInfo::RUNTIME_ENTRY, eq); | |
797 | |
798 // 'Restore' the condition in a slightly hacky way. (It would be better | |
799 // to use 'msr' and 'mrs' instructions here, but they are not supported by | |
vincent.belliard.fr
2013/11/07 08:43:24
mrs and msr are available (assembler-arm.h line 10
| |
800 // our ARM simulator). | |
801 if (condition != al) { | |
802 condition = ne; | |
803 __ cmp(scratch, Operand::Zero()); | |
804 } | |
779 } | 805 } |
780 | 806 |
781 if (info()->ShouldTrapOnDeopt()) { | 807 if (info()->ShouldTrapOnDeopt()) { |
782 __ stop("trap_on_deopt", condition); | 808 __ stop("trap_on_deopt", condition); |
783 } | 809 } |
784 | 810 |
785 ASSERT(info()->IsStub() || frame_is_built_); | 811 ASSERT(info()->IsStub() || frame_is_built_); |
786 if (condition == al && frame_is_built_) { | 812 if (condition == al && frame_is_built_) { |
787 __ Call(entry, RelocInfo::RUNTIME_ENTRY); | 813 __ Call(entry, RelocInfo::RUNTIME_ENTRY); |
788 } else { | 814 } else { |
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5836 __ sub(scratch, result, Operand::PointerOffsetFromSmiKey(index)); | 5862 __ sub(scratch, result, Operand::PointerOffsetFromSmiKey(index)); |
5837 __ ldr(result, FieldMemOperand(scratch, | 5863 __ ldr(result, FieldMemOperand(scratch, |
5838 FixedArray::kHeaderSize - kPointerSize)); | 5864 FixedArray::kHeaderSize - kPointerSize)); |
5839 __ bind(&done); | 5865 __ bind(&done); |
5840 } | 5866 } |
5841 | 5867 |
5842 | 5868 |
5843 #undef __ | 5869 #undef __ |
5844 | 5870 |
5845 } } // namespace v8::internal | 5871 } } // namespace v8::internal |
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