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Unified Diff: runtime/vm/intermediate_language_ia32.cc

Issue 410333003: Shorter TryAllocate instruction sequence on ARM/ARM64/MIPS. (Closed) Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart
Patch Set: Created 6 years, 5 months ago
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Index: runtime/vm/intermediate_language_ia32.cc
diff --git a/runtime/vm/intermediate_language_ia32.cc b/runtime/vm/intermediate_language_ia32.cc
index 03d75b26690c25fb8ef9aad7df17ef74ab9ddc8c..7b276af4fbeaca16d6bf55e6faf524569b85890d 100644
--- a/runtime/vm/intermediate_language_ia32.cc
+++ b/runtime/vm/intermediate_language_ia32.cc
@@ -1665,37 +1665,65 @@ void GuardFieldLengthInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
}
-class StoreInstanceFieldSlowPath : public SlowPathCode {
+class BoxAllocationSlowPath : public SlowPathCode {
public:
- StoreInstanceFieldSlowPath(StoreInstanceFieldInstr* instruction,
- const Class& cls)
- : instruction_(instruction), cls_(cls) { }
+ BoxAllocationSlowPath(Instruction* instruction,
+ const Class& cls,
+ Register result)
+ : instruction_(instruction),
+ cls_(cls),
+ result_(result) { }
virtual void EmitNativeCode(FlowGraphCompiler* compiler) {
- __ Comment("StoreInstanceFieldSlowPath");
- __ Bind(entry_label());
Isolate* isolate = compiler->isolate();
+ StubCode* stub_code = isolate->stub_code();
+
+ if (Assembler::EmittingComments()) {
+ __ Comment("%s slow path allocation of %s",
+ instruction_->DebugName(),
+ String::Handle(cls_.PrettyName()).ToCString());
+ }
+ __ Bind(entry_label());
+
const Code& stub =
- Code::Handle(isolate,
- isolate->stub_code()->GetAllocationStubForClass(cls_));
+ Code::Handle(isolate, stub_code->GetAllocationStubForClass(cls_));
const ExternalLabel label(stub.EntryPoint());
LocationSummary* locs = instruction_->locs();
- locs->live_registers()->Remove(locs->temp(0));
+
+ locs->live_registers()->Remove(Location::RegisterLocation(result_));
compiler->SaveLiveRegisters(locs);
compiler->GenerateCall(Scanner::kNoSourcePos, // No token position.
&label,
RawPcDescriptors::kOther,
locs);
- __ MoveRegister(locs->temp(0).reg(), EAX);
+ __ MoveRegister(result_, EAX);
compiler->RestoreLiveRegisters(locs);
__ jmp(exit_label());
}
+ static void Allocate(FlowGraphCompiler* compiler,
+ Instruction* instruction,
+ const Class& cls,
+ Register result,
+ Register temp) {
+ BoxAllocationSlowPath* slow_path =
+ new BoxAllocationSlowPath(instruction, cls, result);
+ compiler->AddSlowPathCode(slow_path);
+
+ __ TryAllocate(cls,
+ slow_path->entry_label(),
+ Assembler::kFarJump,
+ result,
+ temp);
+ __ Bind(slow_path->exit_label());
+ }
+
private:
- StoreInstanceFieldInstr* instruction_;
+ Instruction* instruction_;
const Class& cls_;
+ Register result_;
};
@@ -1734,6 +1762,29 @@ LocationSummary* StoreInstanceFieldInstr::MakeLocationSummary(Isolate* isolate,
}
+static void EnsureMutableBox(FlowGraphCompiler* compiler,
+ StoreInstanceFieldInstr* instruction,
+ Register box_reg,
+ const Class& cls,
+ Register instance_reg,
+ intptr_t offset,
+ Register temp) {
+ Label done;
+ const Immediate& raw_null =
+ Immediate(reinterpret_cast<intptr_t>(Object::null()));
+ __ movl(box_reg, FieldAddress(instance_reg, offset));
+ __ cmpl(box_reg, raw_null);
+ __ j(NOT_EQUAL, &done);
+ BoxAllocationSlowPath::Allocate(compiler, instruction, cls, box_reg, temp);
+ __ movl(temp, box_reg);
+ __ StoreIntoObject(instance_reg,
+ FieldAddress(instance_reg, offset),
+ temp);
+
+ __ Bind(&done);
+}
+
+
void StoreInstanceFieldInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
Label skip_store;
@@ -1761,16 +1812,7 @@ void StoreInstanceFieldInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
UNREACHABLE();
}
- StoreInstanceFieldSlowPath* slow_path =
- new StoreInstanceFieldSlowPath(this, *cls);
- compiler->AddSlowPathCode(slow_path);
-
- __ TryAllocate(*cls,
- slow_path->entry_label(),
- Assembler::kFarJump,
- temp,
- temp2);
- __ Bind(slow_path->exit_label());
+ BoxAllocationSlowPath::Allocate(compiler, this, *cls, temp, temp2);
__ movl(temp2, temp);
__ StoreIntoObject(instance_reg,
FieldAddress(instance_reg, offset_in_bytes_),
@@ -1842,30 +1884,13 @@ void StoreInstanceFieldInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
{
__ Bind(&store_double);
- Label copy_double;
-
- StoreInstanceFieldSlowPath* slow_path =
- new StoreInstanceFieldSlowPath(this, compiler->double_class());
- compiler->AddSlowPathCode(slow_path);
-
- const Immediate& raw_null =
- Immediate(reinterpret_cast<intptr_t>(Object::null()));
- __ movl(temp, FieldAddress(instance_reg, offset_in_bytes_));
- __ cmpl(temp, raw_null);
- __ j(NOT_EQUAL, &copy_double);
-
- __ TryAllocate(compiler->double_class(),
- slow_path->entry_label(),
- Assembler::kFarJump,
- temp,
- temp2);
- __ Bind(slow_path->exit_label());
- __ movl(temp2, temp);
- __ StoreIntoObject(instance_reg,
- FieldAddress(instance_reg, offset_in_bytes_),
- temp2);
-
- __ Bind(&copy_double);
+ EnsureMutableBox(compiler,
+ this,
+ temp,
+ compiler->double_class(),
+ instance_reg,
+ offset_in_bytes_,
+ temp2);
__ movsd(fpu_temp, FieldAddress(value_reg, Double::value_offset()));
__ movsd(FieldAddress(temp, Double::value_offset()), fpu_temp);
__ jmp(&skip_store);
@@ -1873,30 +1898,13 @@ void StoreInstanceFieldInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
{
__ Bind(&store_float32x4);
- Label copy_float32x4;
-
- StoreInstanceFieldSlowPath* slow_path =
- new StoreInstanceFieldSlowPath(this, compiler->float32x4_class());
- compiler->AddSlowPathCode(slow_path);
-
- const Immediate& raw_null =
- Immediate(reinterpret_cast<intptr_t>(Object::null()));
- __ movl(temp, FieldAddress(instance_reg, offset_in_bytes_));
- __ cmpl(temp, raw_null);
- __ j(NOT_EQUAL, &copy_float32x4);
-
- __ TryAllocate(compiler->float32x4_class(),
- slow_path->entry_label(),
- Assembler::kFarJump,
- temp,
- temp2);
- __ Bind(slow_path->exit_label());
- __ movl(temp2, temp);
- __ StoreIntoObject(instance_reg,
- FieldAddress(instance_reg, offset_in_bytes_),
- temp2);
-
- __ Bind(&copy_float32x4);
+ EnsureMutableBox(compiler,
+ this,
+ temp,
+ compiler->float32x4_class(),
+ instance_reg,
+ offset_in_bytes_,
+ temp2);
__ movups(fpu_temp, FieldAddress(value_reg, Float32x4::value_offset()));
__ movups(FieldAddress(temp, Float32x4::value_offset()), fpu_temp);
__ jmp(&skip_store);
@@ -1904,30 +1912,13 @@ void StoreInstanceFieldInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
{
__ Bind(&store_float64x2);
- Label copy_float64x2;
-
- StoreInstanceFieldSlowPath* slow_path =
- new StoreInstanceFieldSlowPath(this, compiler->float64x2_class());
- compiler->AddSlowPathCode(slow_path);
-
- const Immediate& raw_null =
- Immediate(reinterpret_cast<intptr_t>(Object::null()));
- __ movl(temp, FieldAddress(instance_reg, offset_in_bytes_));
- __ cmpl(temp, raw_null);
- __ j(NOT_EQUAL, &copy_float64x2);
-
- __ TryAllocate(compiler->float64x2_class(),
- slow_path->entry_label(),
- Assembler::kFarJump,
- temp,
- temp2);
- __ Bind(slow_path->exit_label());
- __ movl(temp2, temp);
- __ StoreIntoObject(instance_reg,
- FieldAddress(instance_reg, offset_in_bytes_),
- temp2);
-
- __ Bind(&copy_float64x2);
+ EnsureMutableBox(compiler,
+ this,
+ temp,
+ compiler->float64x2_class(),
+ instance_reg,
+ offset_in_bytes_,
+ temp2);
__ movups(fpu_temp, FieldAddress(value_reg, Float64x2::value_offset()));
__ movups(FieldAddress(temp, Float64x2::value_offset()), fpu_temp);
__ jmp(&skip_store);
@@ -2161,110 +2152,6 @@ void CreateArrayInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
}
-class BoxDoubleSlowPath : public SlowPathCode {
- public:
- explicit BoxDoubleSlowPath(Instruction* instruction)
- : instruction_(instruction) { }
-
- virtual void EmitNativeCode(FlowGraphCompiler* compiler) {
- __ Comment("BoxDoubleSlowPath");
- __ Bind(entry_label());
- Isolate* isolate = compiler->isolate();
- StubCode* stub_code = isolate->stub_code();
- const Class& double_class = compiler->double_class();
- const Code& stub =
- Code::Handle(isolate,
- stub_code->GetAllocationStubForClass(double_class));
- const ExternalLabel label(stub.EntryPoint());
-
- LocationSummary* locs = instruction_->locs();
- ASSERT(!locs->live_registers()->Contains(locs->out(0)));
- compiler->SaveLiveRegisters(locs);
- compiler->GenerateCall(Scanner::kNoSourcePos, // No token position.
- &label,
- RawPcDescriptors::kOther,
- locs);
- __ MoveRegister(locs->out(0).reg(), EAX);
- compiler->RestoreLiveRegisters(locs);
-
- __ jmp(exit_label());
- }
-
- private:
- Instruction* instruction_;
-};
-
-
-class BoxFloat32x4SlowPath : public SlowPathCode {
- public:
- explicit BoxFloat32x4SlowPath(Instruction* instruction)
- : instruction_(instruction) { }
-
- virtual void EmitNativeCode(FlowGraphCompiler* compiler) {
- __ Comment("BoxFloat32x4SlowPath");
- __ Bind(entry_label());
- Isolate* isolate = compiler->isolate();
- StubCode* stub_code = isolate->stub_code();
- const Class& float32x4_class = compiler->float32x4_class();
- const Code& stub =
- Code::Handle(isolate,
- stub_code->GetAllocationStubForClass(float32x4_class));
- const ExternalLabel label(stub.EntryPoint());
-
- LocationSummary* locs = instruction_->locs();
- ASSERT(!locs->live_registers()->Contains(locs->out(0)));
-
- compiler->SaveLiveRegisters(locs);
- compiler->GenerateCall(Scanner::kNoSourcePos, // No token position.
- &label,
- RawPcDescriptors::kOther,
- locs);
- __ MoveRegister(locs->out(0).reg(), EAX);
- compiler->RestoreLiveRegisters(locs);
-
- __ jmp(exit_label());
- }
-
- private:
- Instruction* instruction_;
-};
-
-
-class BoxFloat64x2SlowPath : public SlowPathCode {
- public:
- explicit BoxFloat64x2SlowPath(Instruction* instruction)
- : instruction_(instruction) { }
-
- virtual void EmitNativeCode(FlowGraphCompiler* compiler) {
- __ Comment("BoxFloat64x2SlowPath");
- __ Bind(entry_label());
- Isolate* isolate = compiler->isolate();
- StubCode* stub_code = isolate->stub_code();
- const Class& float64x2_class = compiler->float64x2_class();
- const Code& stub =
- Code::Handle(isolate,
- stub_code->GetAllocationStubForClass(float64x2_class));
- const ExternalLabel label(stub.EntryPoint());
-
- LocationSummary* locs = instruction_->locs();
- ASSERT(!locs->live_registers()->Contains(locs->out(0)));
-
- compiler->SaveLiveRegisters(locs);
- compiler->GenerateCall(Scanner::kNoSourcePos, // No token position.
- &label,
- RawPcDescriptors::kOther,
- locs);
- __ MoveRegister(locs->out(0).reg(), EAX);
- compiler->RestoreLiveRegisters(locs);
-
- __ jmp(exit_label());
- }
-
- private:
- Instruction* instruction_;
-};
-
-
LocationSummary* LoadFieldInstr::MakeLocationSummary(Isolate* isolate,
bool opt) const {
const intptr_t kNumInputs = 1;
@@ -2356,15 +2243,8 @@ void LoadFieldInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
{
__ Bind(&load_double);
- BoxDoubleSlowPath* slow_path = new BoxDoubleSlowPath(this);
- compiler->AddSlowPathCode(slow_path);
-
- __ TryAllocate(compiler->double_class(),
- slow_path->entry_label(),
- Assembler::kFarJump,
- result,
- temp);
- __ Bind(slow_path->exit_label());
+ BoxAllocationSlowPath::Allocate(
+ compiler, this, compiler->double_class(), result, temp);
__ movl(temp, FieldAddress(instance_reg, offset_in_bytes()));
__ movsd(value, FieldAddress(temp, Double::value_offset()));
__ movsd(FieldAddress(result, Double::value_offset()), value);
@@ -2373,16 +2253,8 @@ void LoadFieldInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
{
__ Bind(&load_float32x4);
-
- BoxFloat32x4SlowPath* slow_path = new BoxFloat32x4SlowPath(this);
- compiler->AddSlowPathCode(slow_path);
-
- __ TryAllocate(compiler->float32x4_class(),
- slow_path->entry_label(),
- Assembler::kFarJump,
- result,
- temp);
- __ Bind(slow_path->exit_label());
+ BoxAllocationSlowPath::Allocate(
+ compiler, this, compiler->float32x4_class(), result, temp);
__ movl(temp, FieldAddress(instance_reg, offset_in_bytes()));
__ movups(value, FieldAddress(temp, Float32x4::value_offset()));
__ movups(FieldAddress(result, Float32x4::value_offset()), value);
@@ -2391,16 +2263,8 @@ void LoadFieldInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
{
__ Bind(&load_float64x2);
-
- BoxFloat64x2SlowPath* slow_path = new BoxFloat64x2SlowPath(this);
- compiler->AddSlowPathCode(slow_path);
-
- __ TryAllocate(compiler->float64x2_class(),
- slow_path->entry_label(),
- Assembler::kFarJump,
- result,
- temp);
- __ Bind(slow_path->exit_label());
+ BoxAllocationSlowPath::Allocate(
+ compiler, this, compiler->float64x2_class(), result, temp);
__ movl(temp, FieldAddress(instance_reg, offset_in_bytes()));
__ movups(value, FieldAddress(temp, Float64x2::value_offset()));
__ movups(FieldAddress(result, Float64x2::value_offset()), value);
@@ -3359,18 +3223,10 @@ LocationSummary* BoxDoubleInstr::MakeLocationSummary(Isolate* isolate,
void BoxDoubleInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
- BoxDoubleSlowPath* slow_path = new BoxDoubleSlowPath(this);
- compiler->AddSlowPathCode(slow_path);
-
Register out_reg = locs()->out(0).reg();
XmmRegister value = locs()->in(0).fpu_reg();
-
- __ TryAllocate(compiler->double_class(),
- slow_path->entry_label(),
- Assembler::kFarJump,
- out_reg,
- kNoRegister);
- __ Bind(slow_path->exit_label());
+ BoxAllocationSlowPath::Allocate(
+ compiler, this, compiler->double_class(), out_reg, kNoRegister);
__ movsd(FieldAddress(out_reg, Double::value_offset()), value);
}
@@ -3449,18 +3305,11 @@ LocationSummary* BoxFloat32x4Instr::MakeLocationSummary(Isolate* isolate,
void BoxFloat32x4Instr::EmitNativeCode(FlowGraphCompiler* compiler) {
- BoxFloat32x4SlowPath* slow_path = new BoxFloat32x4SlowPath(this);
- compiler->AddSlowPathCode(slow_path);
-
Register out_reg = locs()->out(0).reg();
XmmRegister value = locs()->in(0).fpu_reg();
- __ TryAllocate(compiler->float32x4_class(),
- slow_path->entry_label(),
- Assembler::kFarJump,
- out_reg,
- kNoRegister);
- __ Bind(slow_path->exit_label());
+ BoxAllocationSlowPath::Allocate(
+ compiler, this, compiler->float32x4_class(), out_reg, kNoRegister);
__ movups(FieldAddress(out_reg, Float32x4::value_offset()), value);
}
@@ -3514,18 +3363,11 @@ LocationSummary* BoxFloat64x2Instr::MakeLocationSummary(Isolate* isolate,
void BoxFloat64x2Instr::EmitNativeCode(FlowGraphCompiler* compiler) {
- BoxFloat64x2SlowPath* slow_path = new BoxFloat64x2SlowPath(this);
- compiler->AddSlowPathCode(slow_path);
-
Register out_reg = locs()->out(0).reg();
XmmRegister value = locs()->in(0).fpu_reg();
- __ TryAllocate(compiler->float64x2_class(),
- slow_path->entry_label(),
- Assembler::kFarJump,
- out_reg,
- kNoRegister);
- __ Bind(slow_path->exit_label());
+ BoxAllocationSlowPath::Allocate(
+ compiler, this, compiler->float64x2_class(), out_reg, kNoRegister);
__ movups(FieldAddress(out_reg, Float64x2::value_offset()), value);
}
@@ -3578,54 +3420,12 @@ LocationSummary* BoxInt32x4Instr::MakeLocationSummary(Isolate* isolate,
}
-class BoxInt32x4SlowPath : public SlowPathCode {
- public:
- explicit BoxInt32x4SlowPath(BoxInt32x4Instr* instruction)
- : instruction_(instruction) { }
-
- virtual void EmitNativeCode(FlowGraphCompiler* compiler) {
- __ Comment("BoxInt32x4SlowPath");
- __ Bind(entry_label());
- Isolate* isolate = compiler->isolate();
- StubCode* stub_code = isolate->stub_code();
- const Class& int32x4_class = compiler->int32x4_class();
- const Code& stub =
- Code::Handle(isolate,
- stub_code->GetAllocationStubForClass(int32x4_class));
- const ExternalLabel label(stub.EntryPoint());
-
- LocationSummary* locs = instruction_->locs();
- ASSERT(!locs->live_registers()->Contains(locs->out(0)));
-
- compiler->SaveLiveRegisters(locs);
- compiler->GenerateCall(Scanner::kNoSourcePos, // No token position.
- &label,
- RawPcDescriptors::kOther,
- locs);
- __ MoveRegister(locs->out(0).reg(), EAX);
- compiler->RestoreLiveRegisters(locs);
-
- __ jmp(exit_label());
- }
-
- private:
- BoxInt32x4Instr* instruction_;
-};
-
-
void BoxInt32x4Instr::EmitNativeCode(FlowGraphCompiler* compiler) {
- BoxInt32x4SlowPath* slow_path = new BoxInt32x4SlowPath(this);
- compiler->AddSlowPathCode(slow_path);
-
Register out_reg = locs()->out(0).reg();
XmmRegister value = locs()->in(0).fpu_reg();
- __ TryAllocate(compiler->int32x4_class(),
- slow_path->entry_label(),
- Assembler::kFarJump,
- out_reg,
- kNoRegister);
- __ Bind(slow_path->exit_label());
+ BoxAllocationSlowPath::Allocate(
+ compiler, this, compiler->int32x4_class(), out_reg, kNoRegister);
__ movups(FieldAddress(out_reg, Int32x4::value_offset()), value);
}
@@ -5703,41 +5503,6 @@ LocationSummary* BoxIntegerInstr::MakeLocationSummary(Isolate* isolate,
}
-class BoxIntegerSlowPath : public SlowPathCode {
- public:
- explicit BoxIntegerSlowPath(Definition* instruction)
- : instruction_(instruction) { }
-
- virtual void EmitNativeCode(FlowGraphCompiler* compiler) {
- __ Comment("BoxIntegerSlowPath");
- __ Bind(entry_label());
- Isolate* isolate = compiler->isolate();
- StubCode* stub_code = isolate->stub_code();
- const Class& mint_class =
- Class::ZoneHandle(isolate, isolate->object_store()->mint_class());
- const Code& stub =
- Code::Handle(isolate, stub_code->GetAllocationStubForClass(mint_class));
- const ExternalLabel label(stub.EntryPoint());
-
- LocationSummary* locs = instruction_->locs();
- ASSERT(!locs->live_registers()->Contains(locs->out(0)));
-
- compiler->SaveLiveRegisters(locs);
- compiler->GenerateCall(Scanner::kNoSourcePos, // No token position.
- &label,
- RawPcDescriptors::kOther,
- locs);
- __ MoveRegister(locs->out(0).reg(), EAX);
- compiler->RestoreLiveRegisters(locs);
-
- __ jmp(exit_label());
- }
-
- private:
- Definition* instruction_;
-};
-
-
void BoxIntegerInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
if (is_smi()) {
PairLocation* value_pair = locs()->in(0).AsPairLocation();
@@ -5748,8 +5513,6 @@ void BoxIntegerInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
return;
}
- BoxIntegerSlowPath* slow_path = new BoxIntegerSlowPath(this);
- compiler->AddSlowPathCode(slow_path);
PairLocation* value_pair = locs()->in(0).AsPairLocation();
Register value_lo = value_pair->At(0).reg();
Register value_hi = value_pair->At(1).reg();
@@ -5777,15 +5540,11 @@ void BoxIntegerInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
__ SmiTag(out_reg);
__ jmp(&done);
__ Bind(&not_smi);
- __ TryAllocate(
- Class::ZoneHandle(Isolate::Current()->object_store()->mint_class()),
- slow_path->entry_label(),
- Assembler::kFarJump,
- out_reg,
- kNoRegister);
- __ Bind(slow_path->exit_label());
// 3. Restore lower half of input before using it.
__ subl(value_lo, Immediate(0x40000000));
+
+ BoxAllocationSlowPath::Allocate(
+ compiler, this, compiler->mint_class(), out_reg, kNoRegister);
__ movl(FieldAddress(out_reg, Mint::value_offset()), value_lo);
__ movl(FieldAddress(out_reg, Mint::value_offset() + kWordSize), value_hi);
__ Bind(&done);
@@ -6338,8 +6097,6 @@ LocationSummary* BoxUint32Instr::MakeLocationSummary(Isolate* isolate,
void BoxUint32Instr::EmitNativeCode(FlowGraphCompiler* compiler) {
- BoxIntegerSlowPath* slow_path = new BoxIntegerSlowPath(this);
- compiler->AddSlowPathCode(slow_path);
Register value = locs()->in(0).reg();
Register out = locs()->out(0).reg();
ASSERT(value != out);
@@ -6356,13 +6113,8 @@ void BoxUint32Instr::EmitNativeCode(FlowGraphCompiler* compiler) {
__ jmp(&done);
__ Bind(&not_smi);
// Allocate a mint.
- __ TryAllocate(
- Class::ZoneHandle(Isolate::Current()->object_store()->mint_class()),
- slow_path->entry_label(),
- Assembler::kFarJump,
- out,
- kNoRegister);
- __ Bind(slow_path->exit_label());
+ BoxAllocationSlowPath::Allocate(
+ compiler, this, compiler->mint_class(), out, kNoRegister);
// Copy low word into mint.
__ movl(FieldAddress(out, Mint::value_offset()), value);
// Zero high word.
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