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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 #include "vm/globals.h" // Needed here to get TARGET_ARCH_MIPS. | 5 #include "vm/globals.h" // Needed here to get TARGET_ARCH_MIPS. |
6 #if defined(TARGET_ARCH_MIPS) | 6 #if defined(TARGET_ARCH_MIPS) |
7 | 7 |
8 #include "vm/intermediate_language.h" | 8 #include "vm/intermediate_language.h" |
9 | 9 |
10 #include "vm/dart_entry.h" | 10 #include "vm/dart_entry.h" |
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3766 void GraphEntryInstr::EmitNativeCode(FlowGraphCompiler* compiler) { | 3766 void GraphEntryInstr::EmitNativeCode(FlowGraphCompiler* compiler) { |
3767 if (!compiler->CanFallThroughTo(normal_entry())) { | 3767 if (!compiler->CanFallThroughTo(normal_entry())) { |
3768 __ b(compiler->GetJumpLabel(normal_entry())); | 3768 __ b(compiler->GetJumpLabel(normal_entry())); |
3769 } | 3769 } |
3770 } | 3770 } |
3771 | 3771 |
3772 | 3772 |
3773 void TargetEntryInstr::EmitNativeCode(FlowGraphCompiler* compiler) { | 3773 void TargetEntryInstr::EmitNativeCode(FlowGraphCompiler* compiler) { |
3774 __ Bind(compiler->GetJumpLabel(this)); | 3774 __ Bind(compiler->GetJumpLabel(this)); |
3775 if (!compiler->is_optimizing()) { | 3775 if (!compiler->is_optimizing()) { |
| 3776 compiler->EmitEdgeCounter(); |
| 3777 // On MIPS the deoptimization descriptor points after the edge counter |
| 3778 // code so that we can reuse the same pattern matching code as at call |
| 3779 // sites, which matches backwards from the end of the pattern. |
3776 compiler->AddCurrentDescriptor(PcDescriptors::kDeopt, | 3780 compiler->AddCurrentDescriptor(PcDescriptors::kDeopt, |
3777 deopt_id_, | 3781 deopt_id_, |
3778 Scanner::kDummyTokenIndex); | 3782 Scanner::kDummyTokenIndex); |
3779 // Add an edge counter. | |
3780 const Array& counter = Array::ZoneHandle(Array::New(1, Heap::kOld)); | |
3781 counter.SetAt(0, Smi::Handle(Smi::New(0))); | |
3782 Label done; | |
3783 __ Comment("Edge counter"); | |
3784 __ LoadObject(T0, counter); | |
3785 __ lw(T1, FieldAddress(T0, Array::element_offset(0))); | |
3786 __ AddImmediateDetectOverflow(T1, T1, Smi::RawValue(1), CMPRES, T2); | |
3787 __ bgez(CMPRES, &done); | |
3788 __ delay_slot()->sw(T1, FieldAddress(T0, Array::element_offset(0))); | |
3789 __ LoadImmediate(TMP1, Smi::RawValue(Smi::kMaxValue)); | |
3790 __ sw(TMP1, FieldAddress(T0, Array::element_offset(0))); // If overflow. | |
3791 __ Bind(&done); | |
3792 } | 3783 } |
3793 if (HasParallelMove()) { | 3784 if (HasParallelMove()) { |
3794 compiler->parallel_move_resolver()->EmitNativeCode(parallel_move()); | 3785 compiler->parallel_move_resolver()->EmitNativeCode(parallel_move()); |
3795 } | 3786 } |
3796 } | 3787 } |
3797 | 3788 |
3798 | 3789 |
3799 LocationSummary* GotoInstr::MakeLocationSummary() const { | 3790 LocationSummary* GotoInstr::MakeLocationSummary() const { |
3800 return new LocationSummary(0, 0, LocationSummary::kNoCall); | 3791 return new LocationSummary(0, 0, LocationSummary::kNoCall); |
3801 } | 3792 } |
3802 | 3793 |
3803 | 3794 |
3804 void GotoInstr::EmitNativeCode(FlowGraphCompiler* compiler) { | 3795 void GotoInstr::EmitNativeCode(FlowGraphCompiler* compiler) { |
3805 __ TraceSimMsg("GotoInstr"); | 3796 __ TraceSimMsg("GotoInstr"); |
| 3797 if (!compiler->is_optimizing()) { |
| 3798 compiler->EmitEdgeCounter(); |
| 3799 // Add a deoptimization descriptor for deoptimizing instructions that |
| 3800 // may be inserted before this instruction. On MIPS this descriptor |
| 3801 // points after the edge counter code so that we can reuse the same |
| 3802 // pattern matching code as at call sites, which matches backwards from |
| 3803 // the end of the pattern. |
| 3804 compiler->AddCurrentDescriptor(PcDescriptors::kDeopt, |
| 3805 GetDeoptId(), |
| 3806 Scanner::kDummyTokenIndex); |
| 3807 } |
3806 if (HasParallelMove()) { | 3808 if (HasParallelMove()) { |
3807 compiler->parallel_move_resolver()->EmitNativeCode(parallel_move()); | 3809 compiler->parallel_move_resolver()->EmitNativeCode(parallel_move()); |
3808 } | 3810 } |
3809 | 3811 |
3810 // We can fall through if the successor is the next block in the list. | 3812 // We can fall through if the successor is the next block in the list. |
3811 // Otherwise, we need a jump. | 3813 // Otherwise, we need a jump. |
3812 if (!compiler->CanFallThroughTo(successor())) { | 3814 if (!compiler->CanFallThroughTo(successor())) { |
3813 __ b(compiler->GetJumpLabel(successor())); | 3815 __ b(compiler->GetJumpLabel(successor())); |
3814 } | 3816 } |
3815 } | 3817 } |
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4048 compiler->GenerateCall(token_pos(), | 4050 compiler->GenerateCall(token_pos(), |
4049 &label, | 4051 &label, |
4050 PcDescriptors::kOther, | 4052 PcDescriptors::kOther, |
4051 locs()); | 4053 locs()); |
4052 __ Drop(2); // Discard type arguments and receiver. | 4054 __ Drop(2); // Discard type arguments and receiver. |
4053 } | 4055 } |
4054 | 4056 |
4055 } // namespace dart | 4057 } // namespace dart |
4056 | 4058 |
4057 #endif // defined TARGET_ARCH_MIPS | 4059 #endif // defined TARGET_ARCH_MIPS |
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