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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_ARM. | 5 #include "vm/globals.h" // Needed here to get TARGET_ARCH_ARM. |
6 #if defined(TARGET_ARCH_ARM) | 6 #if defined(TARGET_ARCH_ARM) |
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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4375 void GraphEntryInstr::EmitNativeCode(FlowGraphCompiler* compiler) { | 4375 void GraphEntryInstr::EmitNativeCode(FlowGraphCompiler* compiler) { |
4376 if (!compiler->CanFallThroughTo(normal_entry())) { | 4376 if (!compiler->CanFallThroughTo(normal_entry())) { |
4377 __ b(compiler->GetJumpLabel(normal_entry())); | 4377 __ b(compiler->GetJumpLabel(normal_entry())); |
4378 } | 4378 } |
4379 } | 4379 } |
4380 | 4380 |
4381 | 4381 |
4382 void TargetEntryInstr::EmitNativeCode(FlowGraphCompiler* compiler) { | 4382 void TargetEntryInstr::EmitNativeCode(FlowGraphCompiler* compiler) { |
4383 __ Bind(compiler->GetJumpLabel(this)); | 4383 __ Bind(compiler->GetJumpLabel(this)); |
4384 if (!compiler->is_optimizing()) { | 4384 if (!compiler->is_optimizing()) { |
| 4385 compiler->EmitEdgeCounter(); |
| 4386 // Add an edge counter. |
| 4387 // On ARM the deoptimization descriptor points after the edge counter |
| 4388 // code so that we can reuse the same pattern matching code as at call |
| 4389 // sites, which matches backwards from the end of the pattern. |
4385 compiler->AddCurrentDescriptor(PcDescriptors::kDeopt, | 4390 compiler->AddCurrentDescriptor(PcDescriptors::kDeopt, |
4386 deopt_id_, | 4391 deopt_id_, |
4387 Scanner::kDummyTokenIndex); | 4392 Scanner::kDummyTokenIndex); |
4388 // Add an edge counter. | |
4389 const Array& counter = Array::ZoneHandle(Array::New(1, Heap::kOld)); | |
4390 counter.SetAt(0, Smi::Handle(Smi::New(0))); | |
4391 __ Comment("Edge counter"); | |
4392 __ LoadObject(R0, counter); | |
4393 __ ldr(IP, FieldAddress(R0, Array::element_offset(0))); | |
4394 __ adds(IP, IP, ShifterOperand(Smi::RawValue(1))); | |
4395 __ LoadImmediate(IP, Smi::RawValue(Smi::kMaxValue), VS); // If overflow. | |
4396 __ str(IP, FieldAddress(R0, Array::element_offset(0))); | |
4397 } | 4393 } |
4398 if (HasParallelMove()) { | 4394 if (HasParallelMove()) { |
4399 compiler->parallel_move_resolver()->EmitNativeCode(parallel_move()); | 4395 compiler->parallel_move_resolver()->EmitNativeCode(parallel_move()); |
4400 } | 4396 } |
4401 } | 4397 } |
4402 | 4398 |
4403 | 4399 |
4404 LocationSummary* GotoInstr::MakeLocationSummary() const { | 4400 LocationSummary* GotoInstr::MakeLocationSummary() const { |
4405 return new LocationSummary(0, 0, LocationSummary::kNoCall); | 4401 return new LocationSummary(0, 0, LocationSummary::kNoCall); |
4406 } | 4402 } |
4407 | 4403 |
4408 | 4404 |
4409 void GotoInstr::EmitNativeCode(FlowGraphCompiler* compiler) { | 4405 void GotoInstr::EmitNativeCode(FlowGraphCompiler* compiler) { |
| 4406 if (!compiler->is_optimizing()) { |
| 4407 compiler->EmitEdgeCounter(); |
| 4408 // Add a deoptimization descriptor for deoptimizing instructions that |
| 4409 // may be inserted before this instruction. On ARM this descriptor |
| 4410 // points after the edge counter code so that we can reuse the same |
| 4411 // pattern matching code as at call sites, which matches backwards from |
| 4412 // the end of the pattern. |
| 4413 compiler->AddCurrentDescriptor(PcDescriptors::kDeopt, |
| 4414 GetDeoptId(), |
| 4415 Scanner::kDummyTokenIndex); |
| 4416 } |
4410 if (HasParallelMove()) { | 4417 if (HasParallelMove()) { |
4411 compiler->parallel_move_resolver()->EmitNativeCode(parallel_move()); | 4418 compiler->parallel_move_resolver()->EmitNativeCode(parallel_move()); |
4412 } | 4419 } |
4413 | 4420 |
4414 // We can fall through if the successor is the next block in the list. | 4421 // We can fall through if the successor is the next block in the list. |
4415 // Otherwise, we need a jump. | 4422 // Otherwise, we need a jump. |
4416 if (!compiler->CanFallThroughTo(successor())) { | 4423 if (!compiler->CanFallThroughTo(successor())) { |
4417 __ b(compiler->GetJumpLabel(successor())); | 4424 __ b(compiler->GetJumpLabel(successor())); |
4418 } | 4425 } |
4419 } | 4426 } |
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4616 compiler->GenerateCall(token_pos(), | 4623 compiler->GenerateCall(token_pos(), |
4617 &label, | 4624 &label, |
4618 PcDescriptors::kOther, | 4625 PcDescriptors::kOther, |
4619 locs()); | 4626 locs()); |
4620 __ Drop(2); // Discard type arguments and receiver. | 4627 __ Drop(2); // Discard type arguments and receiver. |
4621 } | 4628 } |
4622 | 4629 |
4623 } // namespace dart | 4630 } // namespace dart |
4624 | 4631 |
4625 #endif // defined TARGET_ARCH_ARM | 4632 #endif // defined TARGET_ARCH_ARM |
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