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// SPDX-License-Identifier: GPL-3.0-or-later
#include "Target/TestTarget.h"
#include "rcc/CodeGen/InstructionDescriptor.h"
#include "rcc/CodeGen/MachineBasicBlock.h"
#include "rcc/CodeGen/MachineBasicBlockAttributes.h"
#include "rcc/CodeGen/MachineFunction.h"
#include "rcc/CodeGen/MachineFunctionAttributes.h"
#include "rcc/CodeGen/MachineFunctionCloner.h"
#include "rcc/CodeGen/MachineIRTypes.h"
#include "rcc/CodeGen/MachineInstr.h"
#include "rcc/CodeGen/MachineVerifier.h"
#include "rcc/CodeGen/TargetDescription.h"
#include <cstdint>
#include <iostream>
#include <memory>
#include <string>
#include <string_view>
#include <utility>
#include <vector>
namespace {
constexpr std::uint32_t NopOpcode = 1;
class TestContext final {
public:
void expect(bool Condition, std::string_view Message) {
if (Condition)
return;
std::cerr << Message << '\n';
++FailureCount;
}
[[nodiscard]] int result() const noexcept {
return FailureCount == 0 ? 0 : 1;
}
private:
int FailureCount = 0;
};
[[nodiscard]] rcc::Expected<rcc::TargetDescription> createTarget() {
rcc::InstructionDescriptor Nop;
Nop.InstructionOpcode = rcc::Opcode::fromValue(NopOpcode);
Nop.Name = "TEST_NOP";
Nop.Flags = {rcc::InstructionFlag::ProducesCode};
std::vector<rcc::InstructionDescriptor> Descriptors;
Descriptors.push_back(std::move(Nop));
auto Instructions = rcc::InstructionSet::create(std::move(Descriptors));
if (!Instructions)
return std::unexpected(Instructions.error());
return rcc::test::createTestTargetDescription(std::move(*Instructions));
}
[[nodiscard]] std::unique_ptr<rcc::MachineFunction> createFunction(TestContext &Context,
std::uint64_t StableID) {
auto Function =
rcc::MachineFunction::create("attributes", rcc::MachineFunctionStableID::fromValue(StableID));
Context.expect(Function.has_value(), "machine function creation must succeed");
if (!Function)
return nullptr;
return std::move(*Function);
}
void testAttributeValueTypes(TestContext &Context) {
rcc::MachineFunctionAttributes FunctionAttributes;
FunctionAttributes.set(rcc::MachineFunctionAttribute::ExposesReturnsTwice);
FunctionAttributes.set(rcc::MachineFunctionAttribute::TracksDebugUserValues);
Context.expect(FunctionAttributes.has(rcc::MachineFunctionAttribute::ExposesReturnsTwice) &&
FunctionAttributes.has(rcc::MachineFunctionAttribute::TracksDebugUserValues) &&
rcc::getMachineFunctionAttributeName(
rcc::MachineFunctionAttribute::TracksDebugUserValues) ==
"TracksDebugUserValues",
"function attribute flags and names must be stable");
auto DecodedFunctionAttributes =
rcc::MachineFunctionAttributes::fromRawFlags(FunctionAttributes.rawFlags());
Context.expect(DecodedFunctionAttributes.has_value() &&
DecodedFunctionAttributes->rawFlags() == FunctionAttributes.rawFlags(),
"function attribute raw flags must round trip");
Context.expect(!rcc::MachineFunctionAttributes::fromRawFlags(std::uint16_t{1} << 15U),
"unknown function attribute bits must be rejected");
rcc::MachineBasicBlockAttributes BlockAttributes;
Context.expect(!BlockAttributes.setName("") && !BlockAttributes.setIRBlockName(""),
"empty block and IR block names must be rejected");
Context.expect(BlockAttributes.setName("entry").has_value() &&
BlockAttributes.setIRBlockName("entry").has_value(),
"decoded block and IR block names must be accepted");
BlockAttributes.set(rcc::MachineBasicBlockAttribute::IRBlockAddressTaken);
BlockAttributes.setCallFrameSize(0);
Context.expect(BlockAttributes.verify().has_value() && BlockAttributes.callFrameSize() == 0,
"zero call-frame size must be the semantic default");
BlockAttributes.setSectionID(rcc::MachineBasicBlockSectionID::exception());
BlockAttributes.setProfileID({.BaseID = 7, .CloneID = 2});
Context.expect(
BlockAttributes.sectionID().kind() == rcc::MachineBasicBlockSectionKind::Exception &&
BlockAttributes.sectionID().number() == 0 &&
BlockAttributes.profileID() == rcc::MachineBasicBlockProfileID{.BaseID = 7, .CloneID = 2},
"special section and fixed profile identities must remain structured");
Context.expect(!rcc::MachineBasicBlockAttributes::fromRawFlags(std::uint8_t{1} << 7U),
"unknown block attribute bits must be rejected");
rcc::MachineInstrFlags Flags{
rcc::MachineInstrFlag::NoConvergent, rcc::MachineInstrFlag::NonNeg,
rcc::MachineInstrFlag::Disjoint, rcc::MachineInstrFlag::NoUSWrap,
rcc::MachineInstrFlag::SameSign, rcc::MachineInstrFlag::InBounds,
};
Context.expect(
Flags.has(rcc::MachineInstrFlag::NoConvergent) && Flags.has(rcc::MachineInstrFlag::NonNeg) &&
Flags.has(rcc::MachineInstrFlag::Disjoint) &&
Flags.has(rcc::MachineInstrFlag::NoUSWrap) &&
Flags.has(rcc::MachineInstrFlag::SameSign) && Flags.has(rcc::MachineInstrFlag::InBounds),
"all fixed MIR instruction flags must have independent storage");
}
void testVerifierAndClone(TestContext &Context) {
auto Target = createTarget();
auto Function = createFunction(Context, 1);
if (!Target || Function == nullptr)
return;
auto FunctionAlignment = rcc::Alignment::create(32);
auto BlockAlignment = rcc::Alignment::create(16);
Context.expect(FunctionAlignment.has_value() && BlockAlignment.has_value(),
"power-of-two alignments must be accepted");
if (!FunctionAlignment || !BlockAlignment)
return;
Function->attributes().set(rcc::MachineFunctionAttribute::ExposesReturnsTwice);
Function->attributes().set(rcc::MachineFunctionAttribute::HasEHScopes);
Function->attributes().set(rcc::MachineFunctionAttribute::DebugInstrRef);
Function->attributes().setAlignment(*FunctionAlignment);
auto BlockResult = Function->createBasicBlock();
Context.expect(BlockResult.has_value(), "machine basic block creation must succeed");
if (!BlockResult)
return;
rcc::MachineBasicBlock *Block = *BlockResult;
Context.expect(Function->appendBlock(*Block).has_value(),
"machine basic block linking must succeed");
Context.expect(Block->attributes().setName("entry").has_value(),
"machine basic block name must be stored");
Block->attributes().set(rcc::MachineBasicBlockAttribute::IRBlockAddressTaken);
Context.expect(!rcc::MachineVerifier::verify(*Function, *Target),
"IR-block-address-taken must require an IR block association");
Context.expect(Block->attributes().setIRBlockName("entry").has_value(),
"IR block association must be stored");
Block->attributes().set(rcc::MachineBasicBlockAttribute::LandingPad);
Block->attributes().setAlignment(*BlockAlignment);
Block->attributes().setSectionID(rcc::MachineBasicBlockSectionID::numbered(3));
Block->attributes().setProfileID({.BaseID = 11, .CloneID = 4});
Block->attributes().setCallFrameSize(64);
auto InstructionResult = Function->createInstruction(rcc::Opcode::fromValue(NopOpcode));
Context.expect(InstructionResult.has_value(), "machine instruction creation must succeed");
if (!InstructionResult)
return;
rcc::MachineInstr *Instruction = *InstructionResult;
Instruction->setFlags({
rcc::MachineInstrFlag::NoConvergent,
rcc::MachineInstrFlag::NonNeg,
rcc::MachineInstrFlag::Disjoint,
rcc::MachineInstrFlag::NoUSWrap,
rcc::MachineInstrFlag::SameSign,
rcc::MachineInstrFlag::InBounds,
});
Context.expect(Block->appendInstruction(*Instruction).has_value(),
"machine instruction linking must succeed");
Context.expect(rcc::MachineVerifier::verify(*Function, *Target).has_value(),
"function and block MIR attributes must pass the unified verifier");
auto Clone =
rcc::cloneMachineFunction(*Function, *Target,
rcc::MachineFunctionCloneOptions{
.NewStableID = rcc::MachineFunctionStableID::fromValue(2),
.NewName = std::string("attributes.clone"),
});
Context.expect(Clone.has_value(), "attributed machine function clone must succeed");
if (!Clone)
return;
const rcc::MachineFunction &ClonedFunction = *Clone->ClonedFunction;
const rcc::MachineBasicBlock *ClonedBlock = ClonedFunction.firstBlock();
const rcc::MachineInstr *ClonedInstruction =
ClonedBlock == nullptr ? nullptr : ClonedBlock->firstInstruction();
Context.expect(ClonedFunction.attributes() == Function->attributes(),
"function MIR attributes must survive deep cloning");
Context.expect(ClonedBlock != nullptr && ClonedBlock->attributes() == Block->attributes(),
"basic block MIR attributes must survive deep cloning");
Context.expect(ClonedInstruction != nullptr && ClonedInstruction->flags() == Instruction->flags(),
"complete MIR instruction flags must survive deep cloning");
}
} // namespace
int main() {
TestContext Context;
testAttributeValueTypes(Context);
testVerifierAndClone(Context);
return Context.result();
}
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