v8/test/cctest/compiler/codegen-tester.h

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// Copyright 2014 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8_CCTEST_COMPILER_CODEGEN_TESTER_H_
#define V8_CCTEST_COMPILER_CODEGEN_TESTER_H_
#include "src/v8.h"
#include "src/compiler/instruction-selector.h"
#include "src/compiler/pipeline.h"
#include "src/compiler/raw-machine-assembler.h"
#include "src/simulator.h"
#include "test/cctest/compiler/call-tester.h"
namespace v8 {
namespace internal {
namespace compiler {
template <typename MachineAssembler>
class MachineAssemblerTester : public HandleAndZoneScope,
public CallHelper,
public MachineAssembler {
public:
MachineAssemblerTester(MachineType return_type, MachineType p0,
MachineType p1, MachineType p2, MachineType p3,
MachineType p4,
MachineOperatorBuilder::Flags flags =
MachineOperatorBuilder::Flag::kNoFlags)
: HandleAndZoneScope(),
CallHelper(
main_isolate(),
MakeMachineSignature(main_zone(), return_type, p0, p1, p2, p3, p4)),
MachineAssembler(
new (main_zone()) Graph(main_zone()),
MakeMachineSignature(main_zone(), return_type, p0, p1, p2, p3, p4),
kMachPtr, flags) {}
Node* LoadFromPointer(void* address, MachineType rep, int32_t offset = 0) {
return this->Load(rep, this->PointerConstant(address),
this->Int32Constant(offset));
}
void StoreToPointer(void* address, MachineType rep, Node* node) {
this->Store(rep, this->PointerConstant(address), node);
}
Node* StringConstant(const char* string) {
return this->HeapConstant(
this->isolate()->factory()->InternalizeUtf8String(string));
}
void CheckNumber(double expected, Object* number) {
CHECK(this->isolate()->factory()->NewNumber(expected)->SameValue(number));
}
void CheckString(const char* expected, Object* string) {
CHECK(
this->isolate()->factory()->InternalizeUtf8String(expected)->SameValue(
string));
}
void GenerateCode() { Generate(); }
protected:
virtual byte* Generate() {
if (code_.is_null()) {
Schedule* schedule = this->Export();
CallDescriptor* call_descriptor = this->call_descriptor();
Graph* graph = this->graph();
CompilationInfo info(graph->zone()->isolate(), graph->zone());
Linkage linkage(graph->zone(), call_descriptor);
Pipeline pipeline(&info);
code_ = pipeline.GenerateCodeForMachineGraph(&linkage, graph, schedule);
}
return this->code_.ToHandleChecked()->entry();
}
private:
MaybeHandle<Code> code_;
};
template <typename ReturnType>
class RawMachineAssemblerTester
: public MachineAssemblerTester<RawMachineAssembler>,
public CallHelper2<ReturnType, RawMachineAssemblerTester<ReturnType> > {
public:
RawMachineAssemblerTester(MachineType p0 = kMachNone,
MachineType p1 = kMachNone,
MachineType p2 = kMachNone,
MachineType p3 = kMachNone,
MachineType p4 = kMachNone)
: MachineAssemblerTester<RawMachineAssembler>(
ReturnValueTraits<ReturnType>::Representation(), p0, p1, p2, p3, p4,
InstructionSelector::SupportedMachineOperatorFlags()) {}
template <typename Ci, typename Fn>
void Run(const Ci& ci, const Fn& fn) {
typename Ci::const_iterator i;
for (i = ci.begin(); i != ci.end(); ++i) {
CHECK_EQ(fn(*i), this->Call(*i));
}
}
template <typename Ci, typename Cj, typename Fn>
void Run(const Ci& ci, const Cj& cj, const Fn& fn) {
typename Ci::const_iterator i;
typename Cj::const_iterator j;
for (i = ci.begin(); i != ci.end(); ++i) {
for (j = cj.begin(); j != cj.end(); ++j) {
CHECK_EQ(fn(*i, *j), this->Call(*i, *j));
}
}
}
};
static const bool USE_RESULT_BUFFER = true;
static const bool USE_RETURN_REGISTER = false;
static const int32_t CHECK_VALUE = 0x99BEEDCE;
// TODO(titzer): use the C-style calling convention, or any register-based
// calling convention for binop tests.
template <typename CType, MachineType rep, bool use_result_buffer>
class BinopTester {
public:
explicit BinopTester(RawMachineAssemblerTester<int32_t>* tester)
: T(tester),
param0(T->LoadFromPointer(&p0, rep)),
param1(T->LoadFromPointer(&p1, rep)),
p0(static_cast<CType>(0)),
p1(static_cast<CType>(0)),
result(static_cast<CType>(0)) {}
RawMachineAssemblerTester<int32_t>* T;
Node* param0;
Node* param1;
CType call(CType a0, CType a1) {
p0 = a0;
p1 = a1;
if (use_result_buffer) {
CHECK_EQ(CHECK_VALUE, T->Call());
return result;
} else {
return T->Call();
}
}
void AddReturn(Node* val) {
if (use_result_buffer) {
T->Store(rep, T->PointerConstant(&result), T->Int32Constant(0), val);
T->Return(T->Int32Constant(CHECK_VALUE));
} else {
T->Return(val);
}
}
template <typename Ci, typename Cj, typename Fn>
void Run(const Ci& ci, const Cj& cj, const Fn& fn) {
typename Ci::const_iterator i;
typename Cj::const_iterator j;
for (i = ci.begin(); i != ci.end(); ++i) {
for (j = cj.begin(); j != cj.end(); ++j) {
CHECK_EQ(fn(*i, *j), this->call(*i, *j));
}
}
}
protected:
CType p0;
CType p1;
CType result;
};
// A helper class for testing code sequences that take two int parameters and
// return an int value.
class Int32BinopTester
: public BinopTester<int32_t, kMachInt32, USE_RETURN_REGISTER> {
public:
explicit Int32BinopTester(RawMachineAssemblerTester<int32_t>* tester)
: BinopTester<int32_t, kMachInt32, USE_RETURN_REGISTER>(tester) {}
};
// A helper class for testing code sequences that take two uint parameters and
// return an uint value.
class Uint32BinopTester
: public BinopTester<uint32_t, kMachUint32, USE_RETURN_REGISTER> {
public:
explicit Uint32BinopTester(RawMachineAssemblerTester<int32_t>* tester)
: BinopTester<uint32_t, kMachUint32, USE_RETURN_REGISTER>(tester) {}
uint32_t call(uint32_t a0, uint32_t a1) {
p0 = a0;
p1 = a1;
return static_cast<uint32_t>(T->Call());
}
};
// A helper class for testing code sequences that take two double parameters and
// return a double value.
// TODO(titzer): figure out how to return doubles correctly on ia32.
class Float64BinopTester
: public BinopTester<double, kMachFloat64, USE_RESULT_BUFFER> {
public:
explicit Float64BinopTester(RawMachineAssemblerTester<int32_t>* tester)
: BinopTester<double, kMachFloat64, USE_RESULT_BUFFER>(tester) {}
};
// A helper class for testing code sequences that take two pointer parameters
// and return a pointer value.
// TODO(titzer): pick word size of pointers based on V8_TARGET.
template <typename Type>
class PointerBinopTester
: public BinopTester<Type*, kMachPtr, USE_RETURN_REGISTER> {
public:
explicit PointerBinopTester(RawMachineAssemblerTester<int32_t>* tester)
: BinopTester<Type*, kMachPtr, USE_RETURN_REGISTER>(tester) {}
};
// A helper class for testing code sequences that take two tagged parameters and
// return a tagged value.
template <typename Type>
class TaggedBinopTester
: public BinopTester<Type*, kMachAnyTagged, USE_RETURN_REGISTER> {
public:
explicit TaggedBinopTester(RawMachineAssemblerTester<int32_t>* tester)
: BinopTester<Type*, kMachAnyTagged, USE_RETURN_REGISTER>(tester) {}
};
// A helper class for testing compares. Wraps a machine opcode and provides
// evaluation routines and the operators.
class CompareWrapper {
public:
explicit CompareWrapper(IrOpcode::Value op) : opcode(op) {}
Node* MakeNode(RawMachineAssemblerTester<int32_t>* m, Node* a, Node* b) {
return m->NewNode(op(m->machine()), a, b);
}
const Operator* op(MachineOperatorBuilder* machine) {
switch (opcode) {
case IrOpcode::kWord32Equal:
return machine->Word32Equal();
case IrOpcode::kInt32LessThan:
return machine->Int32LessThan();
case IrOpcode::kInt32LessThanOrEqual:
return machine->Int32LessThanOrEqual();
case IrOpcode::kUint32LessThan:
return machine->Uint32LessThan();
case IrOpcode::kUint32LessThanOrEqual:
return machine->Uint32LessThanOrEqual();
case IrOpcode::kFloat64Equal:
return machine->Float64Equal();
case IrOpcode::kFloat64LessThan:
return machine->Float64LessThan();
case IrOpcode::kFloat64LessThanOrEqual:
return machine->Float64LessThanOrEqual();
default:
UNREACHABLE();
}
return NULL;
}
bool Int32Compare(int32_t a, int32_t b) {
switch (opcode) {
case IrOpcode::kWord32Equal:
return a == b;
case IrOpcode::kInt32LessThan:
return a < b;
case IrOpcode::kInt32LessThanOrEqual:
return a <= b;
case IrOpcode::kUint32LessThan:
return static_cast<uint32_t>(a) < static_cast<uint32_t>(b);
case IrOpcode::kUint32LessThanOrEqual:
return static_cast<uint32_t>(a) <= static_cast<uint32_t>(b);
default:
UNREACHABLE();
}
return false;
}
bool Float64Compare(double a, double b) {
switch (opcode) {
case IrOpcode::kFloat64Equal:
return a == b;
case IrOpcode::kFloat64LessThan:
return a < b;
case IrOpcode::kFloat64LessThanOrEqual:
return a <= b;
default:
UNREACHABLE();
}
return false;
}
IrOpcode::Value opcode;
};
// A small closure class to generate code for a function of two inputs that
// produces a single output so that it can be used in many different contexts.
// The {expected()} method should compute the expected output for a given
// pair of inputs.
template <typename T>
class BinopGen {
public:
virtual void gen(RawMachineAssemblerTester<int32_t>* m, Node* a, Node* b) = 0;
virtual T expected(T a, T b) = 0;
virtual ~BinopGen() {}
};
// A helper class to generate various combination of input shape combinations
// and run the generated code to ensure it produces the correct results.
class Int32BinopInputShapeTester {
public:
explicit Int32BinopInputShapeTester(BinopGen<int32_t>* g) : gen(g) {}
void TestAllInputShapes();
private:
BinopGen<int32_t>* gen;
int32_t input_a;
int32_t input_b;
void Run(RawMachineAssemblerTester<int32_t>* m);
void RunLeft(RawMachineAssemblerTester<int32_t>* m);
void RunRight(RawMachineAssemblerTester<int32_t>* m);
};
} // namespace compiler
} // namespace internal
} // namespace v8
#endif // V8_CCTEST_COMPILER_CODEGEN_TESTER_H_