diff options
Diffstat (limited to 'compiler/optimizing/code_generator.cc')
| -rw-r--r-- | compiler/optimizing/code_generator.cc | 52 |
1 files changed, 51 insertions, 1 deletions
diff --git a/compiler/optimizing/code_generator.cc b/compiler/optimizing/code_generator.cc index 2547a29..3231c99 100644 --- a/compiler/optimizing/code_generator.cc +++ b/compiler/optimizing/code_generator.cc @@ -44,6 +44,7 @@ void CodeGenerator::CompileBaseline(CodeAllocator* allocator, bool is_leaf) { ComputeFrameSize(GetGraph()->GetNumberOfLocalVRegs() + GetGraph()->GetNumberOfTemporaries() + 1 /* filler */, + 0, /* the baseline compiler does not have live registers at slow path */ GetGraph()->GetMaximumNumberOfOutVRegs() + 1 /* current method */); GenerateFrameEntry(); @@ -111,10 +112,15 @@ size_t CodeGenerator::AllocateFreeRegisterInternal( return -1; } -void CodeGenerator::ComputeFrameSize(size_t number_of_spill_slots, size_t number_of_out_slots) { +void CodeGenerator::ComputeFrameSize(size_t number_of_spill_slots, + size_t maximum_number_of_live_registers, + size_t number_of_out_slots) { + first_register_slot_in_slow_path_ = (number_of_out_slots + number_of_spill_slots) * kVRegSize; + SetFrameSize(RoundUp( number_of_spill_slots * kVRegSize + number_of_out_slots * kVRegSize + + maximum_number_of_live_registers * GetWordSize() + FrameEntrySpillSize(), kStackAlignment)); } @@ -468,4 +474,48 @@ void CodeGenerator::RecordPcInfo(HInstruction* instruction, uint32_t dex_pc) { } } +size_t CodeGenerator::GetStackOffsetOfSavedRegister(size_t index) { + return first_register_slot_in_slow_path_ + index * GetWordSize(); +} + +void CodeGenerator::SaveLiveRegisters(LocationSummary* locations) { + RegisterSet* register_set = locations->GetLiveRegisters(); + uint32_t count = 0; + for (size_t i = 0, e = GetNumberOfCoreRegisters(); i < e; ++i) { + if (register_set->ContainsCoreRegister(i)) { + size_t stack_offset = GetStackOffsetOfSavedRegister(count); + ++count; + SaveCoreRegister(Location::StackSlot(stack_offset), i); + // If the register holds an object, update the stack mask. + if (locations->RegisterContainsObject(i)) { + locations->SetStackBit(stack_offset / kVRegSize); + } + } + } + + for (size_t i = 0, e = GetNumberOfFloatingPointRegisters(); i < e; ++i) { + if (register_set->ContainsFloatingPointRegister(i)) { + LOG(FATAL) << "Unimplemented"; + } + } +} + +void CodeGenerator::RestoreLiveRegisters(LocationSummary* locations) { + RegisterSet* register_set = locations->GetLiveRegisters(); + uint32_t count = 0; + for (size_t i = 0, e = GetNumberOfCoreRegisters(); i < e; ++i) { + if (register_set->ContainsCoreRegister(i)) { + size_t stack_offset = GetStackOffsetOfSavedRegister(count); + ++count; + RestoreCoreRegister(Location::StackSlot(stack_offset), i); + } + } + + for (size_t i = 0, e = GetNumberOfFloatingPointRegisters(); i < e; ++i) { + if (register_set->ContainsFloatingPointRegister(i)) { + LOG(FATAL) << "Unimplemented"; + } + } +} + } // namespace art |