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Diffstat (limited to 'compiler/optimizing/code_generator_mips.cc')
-rw-r--r--compiler/optimizing/code_generator_mips.cc185
1 files changed, 111 insertions, 74 deletions
diff --git a/compiler/optimizing/code_generator_mips.cc b/compiler/optimizing/code_generator_mips.cc
index b767aa5ef2..aa81bad3de 100644
--- a/compiler/optimizing/code_generator_mips.cc
+++ b/compiler/optimizing/code_generator_mips.cc
@@ -905,7 +905,7 @@ void CodeGeneratorMIPS::MoveConstant(Location destination, HConstant* c) {
} else {
DCHECK(destination.IsStackSlot())
<< "Cannot move " << c->DebugName() << " to " << destination;
- __ StoreConst32ToOffset(value, SP, destination.GetStackIndex(), TMP);
+ __ StoreConstToOffset(kStoreWord, value, SP, destination.GetStackIndex(), TMP);
}
} else if (c->IsLongConstant()) {
// Move 64 bit constant.
@@ -917,7 +917,7 @@ void CodeGeneratorMIPS::MoveConstant(Location destination, HConstant* c) {
} else {
DCHECK(destination.IsDoubleStackSlot())
<< "Cannot move " << c->DebugName() << " to " << destination;
- __ StoreConst64ToOffset(value, SP, destination.GetStackIndex(), TMP);
+ __ StoreConstToOffset(kStoreDoubleword, value, SP, destination.GetStackIndex(), TMP);
}
} else if (c->IsFloatConstant()) {
// Move 32 bit float constant.
@@ -927,7 +927,7 @@ void CodeGeneratorMIPS::MoveConstant(Location destination, HConstant* c) {
} else {
DCHECK(destination.IsStackSlot())
<< "Cannot move " << c->DebugName() << " to " << destination;
- __ StoreConst32ToOffset(value, SP, destination.GetStackIndex(), TMP);
+ __ StoreConstToOffset(kStoreWord, value, SP, destination.GetStackIndex(), TMP);
}
} else {
// Move 64 bit double constant.
@@ -939,7 +939,7 @@ void CodeGeneratorMIPS::MoveConstant(Location destination, HConstant* c) {
} else {
DCHECK(destination.IsDoubleStackSlot())
<< "Cannot move " << c->DebugName() << " to " << destination;
- __ StoreConst64ToOffset(value, SP, destination.GetStackIndex(), TMP);
+ __ StoreConstToOffset(kStoreDoubleword, value, SP, destination.GetStackIndex(), TMP);
}
}
}
@@ -1960,6 +1960,25 @@ void InstructionCodeGeneratorMIPS::VisitArrayLength(HArrayLength* instruction) {
codegen_->MaybeRecordImplicitNullCheck(instruction);
}
+Location LocationsBuilderMIPS::RegisterOrZeroConstant(HInstruction* instruction) {
+ return (instruction->IsConstant() && instruction->AsConstant()->IsZeroBitPattern())
+ ? Location::ConstantLocation(instruction->AsConstant())
+ : Location::RequiresRegister();
+}
+
+Location LocationsBuilderMIPS::FpuRegisterOrConstantForStore(HInstruction* instruction) {
+ // We can store 0.0 directly (from the ZERO register) without loading it into an FPU register.
+ // We can store a non-zero float or double constant without first loading it into the FPU,
+ // but we should only prefer this if the constant has a single use.
+ if (instruction->IsConstant() &&
+ (instruction->AsConstant()->IsZeroBitPattern() ||
+ instruction->GetUses().HasExactlyOneElement())) {
+ return Location::ConstantLocation(instruction->AsConstant());
+ // Otherwise fall through and require an FPU register for the constant.
+ }
+ return Location::RequiresFpuRegister();
+}
+
void LocationsBuilderMIPS::VisitArraySet(HArraySet* instruction) {
bool needs_runtime_call = instruction->NeedsTypeCheck();
LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(
@@ -1974,9 +1993,9 @@ void LocationsBuilderMIPS::VisitArraySet(HArraySet* instruction) {
locations->SetInAt(0, Location::RequiresRegister());
locations->SetInAt(1, Location::RegisterOrConstant(instruction->InputAt(1)));
if (Primitive::IsFloatingPointType(instruction->InputAt(2)->GetType())) {
- locations->SetInAt(2, Location::RequiresFpuRegister());
+ locations->SetInAt(2, FpuRegisterOrConstantForStore(instruction->InputAt(2)));
} else {
- locations->SetInAt(2, Location::RequiresRegister());
+ locations->SetInAt(2, RegisterOrZeroConstant(instruction->InputAt(2)));
}
}
}
@@ -1985,24 +2004,29 @@ void InstructionCodeGeneratorMIPS::VisitArraySet(HArraySet* instruction) {
LocationSummary* locations = instruction->GetLocations();
Register obj = locations->InAt(0).AsRegister<Register>();
Location index = locations->InAt(1);
+ Location value_location = locations->InAt(2);
Primitive::Type value_type = instruction->GetComponentType();
bool needs_runtime_call = locations->WillCall();
bool needs_write_barrier =
CodeGenerator::StoreNeedsWriteBarrier(value_type, instruction->GetValue());
auto null_checker = GetImplicitNullChecker(instruction);
+ Register base_reg = index.IsConstant() ? obj : TMP;
switch (value_type) {
case Primitive::kPrimBoolean:
case Primitive::kPrimByte: {
uint32_t data_offset = mirror::Array::DataOffset(sizeof(uint8_t)).Uint32Value();
- Register value = locations->InAt(2).AsRegister<Register>();
if (index.IsConstant()) {
- size_t offset =
- (index.GetConstant()->AsIntConstant()->GetValue() << TIMES_1) + data_offset;
- __ StoreToOffset(kStoreByte, value, obj, offset, null_checker);
+ data_offset += index.GetConstant()->AsIntConstant()->GetValue() << TIMES_1;
} else {
- __ Addu(TMP, obj, index.AsRegister<Register>());
- __ StoreToOffset(kStoreByte, value, TMP, data_offset, null_checker);
+ __ Addu(base_reg, obj, index.AsRegister<Register>());
+ }
+ if (value_location.IsConstant()) {
+ int32_t value = CodeGenerator::GetInt32ValueOf(value_location.GetConstant());
+ __ StoreConstToOffset(kStoreByte, value, base_reg, data_offset, TMP, null_checker);
+ } else {
+ Register value = value_location.AsRegister<Register>();
+ __ StoreToOffset(kStoreByte, value, base_reg, data_offset, null_checker);
}
break;
}
@@ -2010,15 +2034,18 @@ void InstructionCodeGeneratorMIPS::VisitArraySet(HArraySet* instruction) {
case Primitive::kPrimShort:
case Primitive::kPrimChar: {
uint32_t data_offset = mirror::Array::DataOffset(sizeof(uint16_t)).Uint32Value();
- Register value = locations->InAt(2).AsRegister<Register>();
if (index.IsConstant()) {
- size_t offset =
- (index.GetConstant()->AsIntConstant()->GetValue() << TIMES_2) + data_offset;
- __ StoreToOffset(kStoreHalfword, value, obj, offset, null_checker);
+ data_offset += index.GetConstant()->AsIntConstant()->GetValue() << TIMES_2;
} else {
- __ Sll(TMP, index.AsRegister<Register>(), TIMES_2);
- __ Addu(TMP, obj, TMP);
- __ StoreToOffset(kStoreHalfword, value, TMP, data_offset, null_checker);
+ __ Sll(base_reg, index.AsRegister<Register>(), TIMES_2);
+ __ Addu(base_reg, obj, base_reg);
+ }
+ if (value_location.IsConstant()) {
+ int32_t value = CodeGenerator::GetInt32ValueOf(value_location.GetConstant());
+ __ StoreConstToOffset(kStoreHalfword, value, base_reg, data_offset, TMP, null_checker);
+ } else {
+ Register value = value_location.AsRegister<Register>();
+ __ StoreToOffset(kStoreHalfword, value, base_reg, data_offset, null_checker);
}
break;
}
@@ -2027,20 +2054,23 @@ void InstructionCodeGeneratorMIPS::VisitArraySet(HArraySet* instruction) {
case Primitive::kPrimNot: {
if (!needs_runtime_call) {
uint32_t data_offset = mirror::Array::DataOffset(sizeof(int32_t)).Uint32Value();
- Register value = locations->InAt(2).AsRegister<Register>();
if (index.IsConstant()) {
- size_t offset =
- (index.GetConstant()->AsIntConstant()->GetValue() << TIMES_4) + data_offset;
- __ StoreToOffset(kStoreWord, value, obj, offset, null_checker);
+ data_offset += index.GetConstant()->AsIntConstant()->GetValue() << TIMES_4;
} else {
- DCHECK(index.IsRegister()) << index;
- __ Sll(TMP, index.AsRegister<Register>(), TIMES_4);
- __ Addu(TMP, obj, TMP);
- __ StoreToOffset(kStoreWord, value, TMP, data_offset, null_checker);
+ __ Sll(base_reg, index.AsRegister<Register>(), TIMES_4);
+ __ Addu(base_reg, obj, base_reg);
}
- if (needs_write_barrier) {
- DCHECK_EQ(value_type, Primitive::kPrimNot);
- codegen_->MarkGCCard(obj, value);
+ if (value_location.IsConstant()) {
+ int32_t value = CodeGenerator::GetInt32ValueOf(value_location.GetConstant());
+ __ StoreConstToOffset(kStoreWord, value, base_reg, data_offset, TMP, null_checker);
+ DCHECK(!needs_write_barrier);
+ } else {
+ Register value = value_location.AsRegister<Register>();
+ __ StoreToOffset(kStoreWord, value, base_reg, data_offset, null_checker);
+ if (needs_write_barrier) {
+ DCHECK_EQ(value_type, Primitive::kPrimNot);
+ codegen_->MarkGCCard(obj, value);
+ }
}
} else {
DCHECK_EQ(value_type, Primitive::kPrimNot);
@@ -2052,47 +2082,54 @@ void InstructionCodeGeneratorMIPS::VisitArraySet(HArraySet* instruction) {
case Primitive::kPrimLong: {
uint32_t data_offset = mirror::Array::DataOffset(sizeof(int64_t)).Uint32Value();
- Register value = locations->InAt(2).AsRegisterPairLow<Register>();
if (index.IsConstant()) {
- size_t offset =
- (index.GetConstant()->AsIntConstant()->GetValue() << TIMES_8) + data_offset;
- __ StoreToOffset(kStoreDoubleword, value, obj, offset, null_checker);
+ data_offset += index.GetConstant()->AsIntConstant()->GetValue() << TIMES_8;
} else {
- __ Sll(TMP, index.AsRegister<Register>(), TIMES_8);
- __ Addu(TMP, obj, TMP);
- __ StoreToOffset(kStoreDoubleword, value, TMP, data_offset, null_checker);
+ __ Sll(base_reg, index.AsRegister<Register>(), TIMES_8);
+ __ Addu(base_reg, obj, base_reg);
+ }
+ if (value_location.IsConstant()) {
+ int64_t value = CodeGenerator::GetInt64ValueOf(value_location.GetConstant());
+ __ StoreConstToOffset(kStoreDoubleword, value, base_reg, data_offset, TMP, null_checker);
+ } else {
+ Register value = value_location.AsRegisterPairLow<Register>();
+ __ StoreToOffset(kStoreDoubleword, value, base_reg, data_offset, null_checker);
}
break;
}
case Primitive::kPrimFloat: {
uint32_t data_offset = mirror::Array::DataOffset(sizeof(float)).Uint32Value();
- FRegister value = locations->InAt(2).AsFpuRegister<FRegister>();
- DCHECK(locations->InAt(2).IsFpuRegister());
if (index.IsConstant()) {
- size_t offset =
- (index.GetConstant()->AsIntConstant()->GetValue() << TIMES_4) + data_offset;
- __ StoreSToOffset(value, obj, offset, null_checker);
+ data_offset += index.GetConstant()->AsIntConstant()->GetValue() << TIMES_4;
} else {
- __ Sll(TMP, index.AsRegister<Register>(), TIMES_4);
- __ Addu(TMP, obj, TMP);
- __ StoreSToOffset(value, TMP, data_offset, null_checker);
+ __ Sll(base_reg, index.AsRegister<Register>(), TIMES_4);
+ __ Addu(base_reg, obj, base_reg);
+ }
+ if (value_location.IsConstant()) {
+ int32_t value = CodeGenerator::GetInt32ValueOf(value_location.GetConstant());
+ __ StoreConstToOffset(kStoreWord, value, base_reg, data_offset, TMP, null_checker);
+ } else {
+ FRegister value = value_location.AsFpuRegister<FRegister>();
+ __ StoreSToOffset(value, base_reg, data_offset, null_checker);
}
break;
}
case Primitive::kPrimDouble: {
uint32_t data_offset = mirror::Array::DataOffset(sizeof(double)).Uint32Value();
- FRegister value = locations->InAt(2).AsFpuRegister<FRegister>();
- DCHECK(locations->InAt(2).IsFpuRegister());
if (index.IsConstant()) {
- size_t offset =
- (index.GetConstant()->AsIntConstant()->GetValue() << TIMES_8) + data_offset;
- __ StoreDToOffset(value, obj, offset, null_checker);
+ data_offset += index.GetConstant()->AsIntConstant()->GetValue() << TIMES_8;
} else {
- __ Sll(TMP, index.AsRegister<Register>(), TIMES_8);
- __ Addu(TMP, obj, TMP);
- __ StoreDToOffset(value, TMP, data_offset, null_checker);
+ __ Sll(base_reg, index.AsRegister<Register>(), TIMES_8);
+ __ Addu(base_reg, obj, base_reg);
+ }
+ if (value_location.IsConstant()) {
+ int64_t value = CodeGenerator::GetInt64ValueOf(value_location.GetConstant());
+ __ StoreConstToOffset(kStoreDoubleword, value, base_reg, data_offset, TMP, null_checker);
+ } else {
+ FRegister value = value_location.AsFpuRegister<FRegister>();
+ __ StoreDToOffset(value, base_reg, data_offset, null_checker);
}
break;
}
@@ -3888,9 +3925,9 @@ void LocationsBuilderMIPS::HandleFieldSet(HInstruction* instruction, const Field
}
} else {
if (Primitive::IsFloatingPointType(field_type)) {
- locations->SetInAt(1, Location::RequiresFpuRegister());
+ locations->SetInAt(1, FpuRegisterOrConstantForStore(instruction->InputAt(1)));
} else {
- locations->SetInAt(1, Location::RequiresRegister());
+ locations->SetInAt(1, RegisterOrZeroConstant(instruction->InputAt(1)));
}
}
}
@@ -3901,6 +3938,7 @@ void InstructionCodeGeneratorMIPS::HandleFieldSet(HInstruction* instruction,
Primitive::Type type = field_info.GetFieldType();
LocationSummary* locations = instruction->GetLocations();
Register obj = locations->InAt(0).AsRegister<Register>();
+ Location value_location = locations->InAt(1);
StoreOperandType store_type = kStoreByte;
bool is_volatile = field_info.IsVolatile();
uint32_t offset = field_info.GetFieldOffset().Uint32Value();
@@ -3941,24 +3979,24 @@ void InstructionCodeGeneratorMIPS::HandleFieldSet(HInstruction* instruction,
codegen_->RecordPcInfo(instruction, instruction->GetDexPc());
if (type == Primitive::kPrimDouble) {
// Pass FP parameters in core registers.
- Location in = locations->InAt(1);
- if (in.IsFpuRegister()) {
- __ Mfc1(locations->GetTemp(1).AsRegister<Register>(), in.AsFpuRegister<FRegister>());
+ if (value_location.IsFpuRegister()) {
+ __ Mfc1(locations->GetTemp(1).AsRegister<Register>(),
+ value_location.AsFpuRegister<FRegister>());
__ MoveFromFpuHigh(locations->GetTemp(2).AsRegister<Register>(),
- in.AsFpuRegister<FRegister>());
- } else if (in.IsDoubleStackSlot()) {
+ value_location.AsFpuRegister<FRegister>());
+ } else if (value_location.IsDoubleStackSlot()) {
__ LoadFromOffset(kLoadWord,
locations->GetTemp(1).AsRegister<Register>(),
SP,
- in.GetStackIndex());
+ value_location.GetStackIndex());
__ LoadFromOffset(kLoadWord,
locations->GetTemp(2).AsRegister<Register>(),
SP,
- in.GetStackIndex() + 4);
+ value_location.GetStackIndex() + 4);
} else {
- DCHECK(in.IsConstant());
- DCHECK(in.GetConstant()->IsDoubleConstant());
- int64_t value = bit_cast<int64_t, double>(in.GetConstant()->AsDoubleConstant()->GetValue());
+ DCHECK(value_location.IsConstant());
+ DCHECK(value_location.GetConstant()->IsDoubleConstant());
+ int64_t value = CodeGenerator::GetInt64ValueOf(value_location.GetConstant());
__ LoadConst64(locations->GetTemp(2).AsRegister<Register>(),
locations->GetTemp(1).AsRegister<Register>(),
value);
@@ -3967,19 +4005,19 @@ void InstructionCodeGeneratorMIPS::HandleFieldSet(HInstruction* instruction,
codegen_->InvokeRuntime(kQuickA64Store, instruction, dex_pc);
CheckEntrypointTypes<kQuickA64Store, void, volatile int64_t *, int64_t>();
} else {
- if (!Primitive::IsFloatingPointType(type)) {
+ if (value_location.IsConstant()) {
+ int64_t value = CodeGenerator::GetInt64ValueOf(value_location.GetConstant());
+ __ StoreConstToOffset(store_type, value, obj, offset, TMP, null_checker);
+ } else if (!Primitive::IsFloatingPointType(type)) {
Register src;
if (type == Primitive::kPrimLong) {
- DCHECK(locations->InAt(1).IsRegisterPair());
- src = locations->InAt(1).AsRegisterPairLow<Register>();
+ src = value_location.AsRegisterPairLow<Register>();
} else {
- DCHECK(locations->InAt(1).IsRegister());
- src = locations->InAt(1).AsRegister<Register>();
+ src = value_location.AsRegister<Register>();
}
__ StoreToOffset(store_type, src, obj, offset, null_checker);
} else {
- DCHECK(locations->InAt(1).IsFpuRegister());
- FRegister src = locations->InAt(1).AsFpuRegister<FRegister>();
+ FRegister src = value_location.AsFpuRegister<FRegister>();
if (type == Primitive::kPrimFloat) {
__ StoreSToOffset(src, obj, offset, null_checker);
} else {
@@ -3990,8 +4028,7 @@ void InstructionCodeGeneratorMIPS::HandleFieldSet(HInstruction* instruction,
// TODO: memory barriers?
if (CodeGenerator::StoreNeedsWriteBarrier(type, instruction->InputAt(1))) {
- DCHECK(locations->InAt(1).IsRegister());
- Register src = locations->InAt(1).AsRegister<Register>();
+ Register src = value_location.AsRegister<Register>();
codegen_->MarkGCCard(obj, src);
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-04 13:21:44 +0000