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package org.shedlang.compiler.backends.llvm;
import org.pcollections.PVector;
import org.shedlang.compiler.backends.Backend;
import org.shedlang.compiler.backends.PatioBackends;
import org.shedlang.compiler.backends.llvm.codegen.PatioToLlvm;
import org.shedlang.compiler.backends.llvm.codegen.PatioToLlvmGlobalContext;
import org.shedlang.compiler.backends.llvm.ir.ast.LlvmBasicBlock;
import org.shedlang.compiler.backends.llvm.ir.ast.LlvmFunctionDefinition;
import org.shedlang.compiler.backends.llvm.ir.ast.LlvmModule;
import org.shedlang.compiler.backends.llvm.ir.ast.instructions.LlvmCall;
import org.shedlang.compiler.backends.llvm.ir.ast.instructions.LlvmReturn;
import org.shedlang.compiler.backends.llvm.ir.ast.instructions.LlvmTrunc;
import org.shedlang.compiler.backends.llvm.ir.ast.operands.LlvmVariableGlobal;
import org.shedlang.compiler.backends.llvm.ir.ast.operands.LlvmVariableLocal;
import org.shedlang.compiler.backends.llvm.ir.ast.types.LlvmTypes;
import org.shedlang.compiler.backends.paths.TargetDir;
import org.shedlang.compiler.backends.targets.NativeTarget;
import org.shedlang.compiler.config.ProfileConfig;
import org.shedlang.compiler.config.ProjectConfig;
import org.shedlang.compiler.patio.PatioCompilationUnit;
import org.shedlang.compiler.runtime.ShedRuntime;
import org.shedlang.compiler.shid.ShidNamespace;
import org.shedlang.compiler.typechecker.TypeInfos;
import org.shedlang.compiler.types.NamespaceName;
import org.shedlang.compiler.util.P;
import org.shedlang.compiler.util.processes.ProcessError;
import java.io.IOException;
import java.nio.file.Path;
import java.util.ArrayList;
import java.util.List;
import java.util.Optional;
import static org.shedlang.compiler.util.processes.ProcessRunner.runInheritIo;
public class LlvmBackend implements Backend {
public static final LlvmBackend AMD64 = new LlvmBackend(NativeTarget.AMD64);
public static final LlvmBackend I686 = new LlvmBackend(NativeTarget.I686);
public static LlvmBackend forTarget(NativeTarget target) {
return new LlvmBackend(target);
}
private final NativeTarget target;
private LlvmBackend(NativeTarget target) {
this.target = target;
}
@Override
public String targetName() {
return this.target.targetName();
}
@Override
public void compile(
ProjectConfig config,
ProfileConfig profileConfig,
List<ShidNamespace> namespaces,
TypeInfos typeInfos,
TargetDir targetDir
) throws IOException, InterruptedException {
PatioBackends.compile(
config,
profileConfig,
namespaces,
typeInfos,
new PatioToBinary(
targetDir,
P.vector(),
PatioToLlvmGlobalContext.empty(this.target)
)
);
}
private class PatioToBinary implements PatioBackends.PatioToTarget {
private final TargetDir targetDir;
private final PVector<Path> objectFilePaths;
private final PatioToLlvmGlobalContext patioToLlvmGlobalContext;
public PatioToBinary(
TargetDir targetDir,
PVector<Path> objectFilePaths,
PatioToLlvmGlobalContext patioToLlvmGlobalContext
) {
this.targetDir = targetDir;
this.objectFilePaths = objectFilePaths;
this.patioToLlvmGlobalContext = patioToLlvmGlobalContext;
}
@Override
public PatioBackends.PatioToTarget namespace(
NamespaceName namespaceName,
PatioCompilationUnit patioCompilationUnit
) throws IOException, InterruptedException {
var llvmModuleResult = PatioToLlvm.generateCompilationUnit(
patioCompilationUnit,
this.patioToLlvmGlobalContext
);
var llvmModule = llvmModuleResult.value();
var patioToLlvmGlobalContext = llvmModuleResult.context();
var objectPath = LlvmCompiler.compileLlvmModule(
llvmModule,
targetDir.namespace(namespaceName)
);
return new PatioToBinary(
this.targetDir,
this.objectFilePaths.plus(objectPath),
patioToLlvmGlobalContext
);
}
@Override
public void bin(
String binName,
PatioCompilationUnit patioCompilationUnit,
String mainFunctionName,
ProfileConfig profileConfig
) throws IOException, InterruptedException {
var linkInputs = new ArrayList<>(objectFilePaths);
var mainModule = generateMain(
patioCompilationUnit,
mainFunctionName,
patioToLlvmGlobalContext
);
var mainObjectPath = LlvmCompiler.compileLlvmModule(mainModule, targetDir.bin(binName));
linkInputs.add(mainObjectPath);
var shedRuntime = ShedRuntime.runtime(
target.targetName(),
profileConfig.gc(),
targetDir
);
link(
linkInputs,
targetDir.topLevel(binName),
shedRuntime
);
}
}
public void link(
List<Path> inputs,
Path outputPath,
ShedRuntime shedRuntime
) throws ProcessError, InterruptedException {
var clangArgs = new ArrayList<String>();
clangArgs.add("clang");
clangArgs.add("-o");
clangArgs.add(outputPath.toString());
for (var input : inputs) {
clangArgs.add(input.toString());
}
clangArgs.add(shedRuntime.dir().resolve("libpatio.a").toString());
clangArgs.add(shedRuntime.dir().resolve("libshed.a").toString());
clangArgs.addAll(this.target.clangFlags());
runInheritIo(clangArgs);
}
private static LlvmModule generateMain(
PatioCompilationUnit patioCompilationUnit,
String mainFunctionName,
PatioToLlvmGlobalContext patioToLlvmGlobalContext
) {
var llvmModuleResult = PatioToLlvm.generateCompilationUnit(
patioCompilationUnit,
patioToLlvmGlobalContext
);
var llvmModule = llvmModuleResult.value();
llvmModule = llvmModule.addTopLevelEntity(new LlvmFunctionDefinition(
"main",
LlvmTypes.INT_32,
List.of(),
List.of(
new LlvmBasicBlock(
Optional.empty(),
List.of(
new LlvmCall(
new LlvmVariableLocal("exitCode"),
LlvmTypes.INT_64,
new LlvmVariableGlobal(mainFunctionName),
List.of()
),
new LlvmTrunc(
new LlvmVariableLocal("exitCode32"),
LlvmTypes.INT_64,
new LlvmVariableLocal("exitCode"),
LlvmTypes.INT_32
)
),
new LlvmReturn(LlvmTypes.INT_32, new LlvmVariableLocal("exitCode32"))
)
)
));
return llvmModule;
}
}
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