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| 1 // Copyright 2012 the V8 project authors. All rights reserved.7 | 1 // Copyright 2012 the V8 project authors. All rights reserved.7 |
| 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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| 323 __ li(entry_offset, Operand(entry - base)); | 323 __ li(entry_offset, Operand(entry - base)); |
| 324 | 324 |
| 325 if (table_entry->needs_frame) { | 325 if (table_entry->needs_frame) { |
| 326 DCHECK(!info()->saves_caller_doubles()); | 326 DCHECK(!info()->saves_caller_doubles()); |
| 327 Comment(";;; call deopt with frame"); | 327 Comment(";;; call deopt with frame"); |
| 328 __ PushCommonFrame(); | 328 __ PushCommonFrame(); |
| 329 __ Call(&needs_frame); | 329 __ Call(&needs_frame); |
| 330 } else { | 330 } else { |
| 331 __ Call(&call_deopt_entry); | 331 __ Call(&call_deopt_entry); |
| 332 } | 332 } |
| 333 info()->LogDeoptCallPosition(masm()->pc_offset(), | 333 LogDeoptCallPosition(masm()->pc_offset(), |
| 334 table_entry->deopt_info.inlining_id); | 334 table_entry->deopt_info.inlining_id); |
| 335 } | 335 } |
| 336 | 336 |
| 337 if (needs_frame.is_linked()) { | 337 if (needs_frame.is_linked()) { |
| 338 __ bind(&needs_frame); | 338 __ bind(&needs_frame); |
| 339 // This variant of deopt can only be used with stubs. Since we don't | 339 // This variant of deopt can only be used with stubs. Since we don't |
| 340 // have a function pointer to install in the stack frame that we're | 340 // have a function pointer to install in the stack frame that we're |
| 341 // building, install a special marker there instead. | 341 // building, install a special marker there instead. |
| 342 __ li(at, Operand(Smi::FromInt(StackFrame::STUB))); | 342 __ li(at, Operand(Smi::FromInt(StackFrame::STUB))); |
| 343 __ push(at); | 343 __ push(at); |
| 344 DCHECK(info()->IsStub()); | 344 DCHECK(info()->IsStub()); |
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| 791 | 791 |
| 792 Deoptimizer::DeoptInfo deopt_info = MakeDeoptInfo(instr, deopt_reason); | 792 Deoptimizer::DeoptInfo deopt_info = MakeDeoptInfo(instr, deopt_reason); |
| 793 | 793 |
| 794 DCHECK(info()->IsStub() || frame_is_built_); | 794 DCHECK(info()->IsStub() || frame_is_built_); |
| 795 // Go through jump table if we need to handle condition, build frame, or | 795 // Go through jump table if we need to handle condition, build frame, or |
| 796 // restore caller doubles. | 796 // restore caller doubles. |
| 797 if (condition == al && frame_is_built_ && | 797 if (condition == al && frame_is_built_ && |
| 798 !info()->saves_caller_doubles()) { | 798 !info()->saves_caller_doubles()) { |
| 799 DeoptComment(deopt_info); | 799 DeoptComment(deopt_info); |
| 800 __ Call(entry, RelocInfo::RUNTIME_ENTRY, condition, src1, src2); | 800 __ Call(entry, RelocInfo::RUNTIME_ENTRY, condition, src1, src2); |
| 801 info()->LogDeoptCallPosition(masm()->pc_offset(), deopt_info.inlining_id); | 801 LogDeoptCallPosition(masm()->pc_offset(), deopt_info.inlining_id); |
| 802 } else { | 802 } else { |
| 803 Deoptimizer::JumpTableEntry table_entry(entry, deopt_info, bailout_type, | 803 Deoptimizer::JumpTableEntry table_entry(entry, deopt_info, bailout_type, |
| 804 !frame_is_built_); | 804 !frame_is_built_); |
| 805 // We often have several deopts to the same entry, reuse the last | 805 // We often have several deopts to the same entry, reuse the last |
| 806 // jump entry if this is the case. | 806 // jump entry if this is the case. |
| 807 if (FLAG_trace_deopt || isolate()->cpu_profiler()->is_profiling() || | 807 if (FLAG_trace_deopt || isolate()->cpu_profiler()->is_profiling() || |
| 808 jump_table_.is_empty() || | 808 jump_table_.is_empty() || |
| 809 !table_entry.IsEquivalentTo(jump_table_.last())) { | 809 !table_entry.IsEquivalentTo(jump_table_.last())) { |
| 810 jump_table_.Add(table_entry, zone()); | 810 jump_table_.Add(table_entry, zone()); |
| 811 } | 811 } |
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| 5531 __ lw(result, FieldMemOperand(scratch, | 5531 __ lw(result, FieldMemOperand(scratch, |
| 5532 FixedArray::kHeaderSize - kPointerSize)); | 5532 FixedArray::kHeaderSize - kPointerSize)); |
| 5533 __ bind(deferred->exit()); | 5533 __ bind(deferred->exit()); |
| 5534 __ bind(&done); | 5534 __ bind(&done); |
| 5535 } | 5535 } |
| 5536 | 5536 |
| 5537 #undef __ | 5537 #undef __ |
| 5538 | 5538 |
| 5539 } // namespace internal | 5539 } // namespace internal |
| 5540 } // namespace v8 | 5540 } // namespace v8 |
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