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package lambdacloud.test;
import static com.sun.org.apache.bcel.internal.Constants.ACC_PUBLIC;
import static com.sun.org.apache.bcel.internal.Constants.ACC_SUPER;
import java.util.HashMap;
import java.util.List;
import lambdacloud.core.CloudFunc.FUNC_TYPE;
import lambdacloud.core.lang.LCArray;
import lambdacloud.core.lang.LCVar;
import symjava.bytecode.BytecodeBatchFunc;
import symjava.bytecode.BytecodeVecFunc;
import symjava.bytecode.BytecodeFunc;
import symjava.bytecode.IR;
import symjava.symbolic.Expr;
import symjava.symbolic.Symbol;
import symjava.symbolic.Expr.TYPE;
import symjava.symbolic.utils.BytecodeUtils;
import symjava.symbolic.utils.FuncClassLoader;
import symjava.symbolic.utils.Utils;
import com.sun.org.apache.bcel.internal.Constants;
import com.sun.org.apache.bcel.internal.generic.ALOAD;
import com.sun.org.apache.bcel.internal.generic.ArrayType;
import com.sun.org.apache.bcel.internal.generic.ClassGen;
import com.sun.org.apache.bcel.internal.generic.ConstantPoolGen;
import com.sun.org.apache.bcel.internal.generic.DASTORE;
import com.sun.org.apache.bcel.internal.generic.ILOAD;
import com.sun.org.apache.bcel.internal.generic.ISTORE;
import com.sun.org.apache.bcel.internal.generic.InstructionConstants;
import com.sun.org.apache.bcel.internal.generic.InstructionFactory;
import com.sun.org.apache.bcel.internal.generic.InstructionList;
import com.sun.org.apache.bcel.internal.generic.LocalVariableGen;
import com.sun.org.apache.bcel.internal.generic.MethodGen;
import com.sun.org.apache.bcel.internal.generic.PUSH;
import com.sun.org.apache.bcel.internal.generic.Type;
/**
* This class use recursive way to generate bytecode for expressions
*
*
*/
public class CompileUtils {
/**
* Recursively reset the compile flags for an expression.
* @param expr
*/
public static void bytecodeGenResetAll(Expr expr) {
if(null == expr) return;
Expr[] tmp = expr.args();
for(int i=0; i<tmp.length; i++)
bytecodeGenResetAll(tmp[i]);
expr.bytecodeGenReset();
}
public static IR getIR(String name, Expr expr, Expr ...args) {
ClassGen cg = null;
IR ir = new IR();
//Reset flags to generate matrix, vector declaration in a new func
bytecodeGenResetAll(expr);
if(expr.getType() == TYPE.MATRIX || expr.getType() == TYPE.VECTOR) {
LCArray output = LCArray.getDoubleArray("output");
cg = _compileVecFunc(name, expr, output, args);
ir.type = FUNC_TYPE.VECTOR; //BytecodeVecFunc
if(expr.getType() == TYPE.VECTOR)
ir.outAryLen = expr.getTypeInfo().dim[0];
else if(expr.getType() == TYPE.MATRIX)
ir.outAryLen = expr.getTypeInfo().dim[0]*expr.getTypeInfo().dim[1];
ir.numArgs = args.length;
///////////////////////////////////////////////////////////////////////////////
//Generate new instance here only for test purpose (will have exception if the IR is wrong)
System.out.println("getIR(): create a new instance to test for: "+expr);
FuncClassLoader<BytecodeVecFunc> fcl = new FuncClassLoader<BytecodeVecFunc>();
fcl.newInstance(cg);
///////////The test code above can be deleted in prod env/////////////////////
} else {
cg = _compile(name, expr, args);
ir.type = FUNC_TYPE.SCALAR;
}
ir.name = cg.getJavaClass().getClassName();
ir.bytes = cg.getJavaClass().getBytes();
return ir;
}
public static IR getIR(String name, Expr[] exprs, Expr ...args) {
ClassGen cg = null;
IR ir = new IR();
//Reset flags to generate matrix, vector declaration in a new func
for(int i=0; i<exprs.length; i++)
bytecodeGenResetAll(exprs[i]);
cg = _compileBatchFunc(name, exprs, args);
ir.type = FUNC_TYPE.BATCH;
ir.name = cg.getJavaClass().getClassName();
ir.bytes = cg.getJavaClass().getBytes();
return ir;
}
public static BytecodeFunc compile(Expr expr, LCVar ...args) {
ClassGen cg = _compile(null, expr, args);
FuncClassLoader<BytecodeFunc> fcl = new FuncClassLoader<BytecodeFunc>();
BytecodeFunc fun = fcl.newInstance(cg);
return fun;
}
// public static void compileGraph(List<BytecodeFunc> retGraph, Expr expr, Expr ...args) {
// }
public static BytecodeFunc compile(String name, Expr expr, Expr ...args) {
ClassGen cg = _compile(name, expr, args);
FuncClassLoader<BytecodeFunc> fcl = new FuncClassLoader<BytecodeFunc>();
BytecodeFunc fun = fcl.newInstance(cg);
return fun;
}
public static ClassGen _compile(String name, Expr expr, Expr ...args) {
String packageName = "symjava.bytecode";
String clsName = name;
if(clsName == null)
clsName = expr.getClass().getSimpleName() + System.currentTimeMillis();
String fullClsName = packageName+"."+clsName;
ClassGen cg = new ClassGen(fullClsName, "java.lang.Object",
"<generated>", ACC_PUBLIC | ACC_SUPER, new String[]{"symjava.bytecode.BytecodeFunc"});
ConstantPoolGen cp = cg.getConstantPool(); // cg creates constant pool
InstructionList il = new InstructionList();
InstructionFactory factory = new InstructionFactory(cg);
short acc_flags = ACC_PUBLIC;
MethodGen mg = new MethodGen(acc_flags, // access flags
Type.DOUBLE, // return type
new Type[] { // argument types
new ArrayType(Type.DOUBLE, 1)
},
new String[] { "args" }, // arg names
"apply", fullClsName, // method, class
il, cp);
HashMap<String, Integer> argsMap = new HashMap<String, Integer>();
if(args.length == 1 && args[0] instanceof LCArray) {
//double apply(double[] args)
((LCArray)args[0]).setArgsDim(1);
argsMap.put(args[0].getLabel(), 1);
System.out.println(fullClsName);
StringBuilder sb = new StringBuilder();
sb.append("double apply(double[] ").append(args[0].getLabel());
sb.append(") = ");
sb.append(expr);
System.out.println(sb.toString());
} else {
//double apply(double x, double y, ...)
for(int i=0; i<args.length; i++) {
argsMap.put(args[i].getLabel(), i);
}
System.out.print(">>CompileUtils: "+fullClsName+": ");
StringBuilder sb = new StringBuilder();
sb.append("double apply(");
for(Expr a : args)
sb.append("double ").append(a).append(", ");
if(args.length > 0)
sb.delete(sb.length()-2, sb.length());
sb.append(") = ");
sb.append(expr);
System.out.println(sb.toString());
}
// Declare local variables
List<Expr> vars = Utils.extractSymbols(expr);
for(Expr var : vars) {
if(var instanceof LCVar) {
LCVar cv = (LCVar)var;
if(argsMap.get(cv.getName()) != null)
continue; // Skip arguments (non local variables)
int indexLVT = BytecodeUtils.declareLocal(cv, mg, il);
cv.setLVTIndex(indexLVT);
}
}
expr.bytecodeGen(fullClsName, mg, cp, factory, il, argsMap, 1, null);
mg.setMaxStack();
cg.addMethod(mg.getMethod());
il.dispose(); // Allow instruction handles to be reused
cg.addEmptyConstructor(ACC_PUBLIC);
try {
cg.getJavaClass().dump("bin/symjava/bytecode/"+clsName+".class");
} catch (java.io.IOException e) {
System.err.println(e);
}
return cg;
}
public static BytecodeBatchFunc compileBatchFunc(String name, Expr[] exprs, Expr ...args) {
ClassGen cg = _compileBatchFunc(name, exprs, args);
FuncClassLoader<BytecodeBatchFunc> fcl = new FuncClassLoader<BytecodeBatchFunc>();
BytecodeBatchFunc fun = fcl.newInstance(cg);
return fun;
}
/**
* Compile a list of expressions
*
* @param name
* @param expr
* @param args
* @return
*/
public static ClassGen _compileBatchFunc(String name, Expr[] exprs, Expr ...args) {
String packageName = "symjava.bytecode";
String clsName = name;
if(clsName == null)
clsName = exprs[0].getClass().getSimpleName() + System.currentTimeMillis();
String fullClsName = packageName+"."+clsName;
ClassGen cg = new ClassGen(fullClsName, "java.lang.Object",
"<generated>", ACC_PUBLIC | ACC_SUPER, new String[]{"symjava.bytecode.BytecodeBatchFunc"});
ConstantPoolGen cp = cg.getConstantPool(); // cg creates constant pool
InstructionList il = new InstructionList();
InstructionFactory factory = new InstructionFactory(cg);
short acc_flags = ACC_PUBLIC;
MethodGen mg = new MethodGen(acc_flags, // access flags
Type.VOID, // return type
new Type[] { // argument types
new ArrayType(Type.DOUBLE, 1),
Type.INT,
new ArrayType(Type.DOUBLE, 1)
},
new String[] { "outAry", "outPos", "args" }, // arg names
"apply", fullClsName, // method, class
il, cp);
HashMap<String, Integer> argsMap = new HashMap<String, Integer>();
//The following are copied from _compile()
//Don't know how to change it accordingly.
if(args.length == 1 && args[0] instanceof LCArray) {
//double apply(double[] args)
((LCArray)args[0]).setArgsDim(1);
argsMap.put(args[0].getLabel(), 1);
System.out.println(fullClsName);
StringBuilder sb = new StringBuilder();
sb.append("double apply(double[] ").append(args[0].getLabel());
sb.append(") = ");
sb.append(Utils.joinLabels(exprs,", "));
System.out.println(sb.toString());
} else {
//double apply(double x, double y, ...)
for(int i=0; i<args.length; i++) {
argsMap.put(args[i].getLabel(), i);
}
System.out.print(">>CompileUtils: "+fullClsName+": ");
StringBuilder sb = new StringBuilder();
sb.append("double apply(");
for(Expr a : args)
sb.append("double ").append(a).append(", ");
if(args.length > 0)
sb.delete(sb.length()-2, sb.length());
sb.append(") = ");
sb.append(Utils.joinLabels(exprs,", "));
System.out.println(sb.toString());
}
// Declare local variables
List<Expr> vars = Utils.extractSymbols(exprs);
for(Expr var : vars) {
if(var instanceof LCVar) {
LCVar cv = (LCVar)var;
if(argsMap.get(cv.getName()) != null)
continue; // Skip arguments (non local variables)
int indexLVT = BytecodeUtils.declareLocal(cv, mg, il);
cv.setLVTIndex(indexLVT);
}
}
for(int i=0; i<exprs.length; i++) {
if(!Utils.symCompare(Symbol.C0, exprs[i])) {
il.append(new ALOAD(1));
//il.append(new PUSH(cp,outPos.get(i)));
il.append(new PUSH(cp,i));//TODO use an list to specify the position like what in class JIT
exprs[i].bytecodeGen(fullClsName, mg, cp, factory, il, argsMap, 3, null);//3: position of args in BytecodeBatchFunc.apply()
//addToInstructionList(mg, cp, factory, il, 3, exprs.get(i), args, argsMap);
il.append(new DASTORE());
}
}
il.append(InstructionConstants.RETURN);
mg.setMaxStack();
cg.addMethod(mg.getMethod());
il.dispose(); // Allow instruction handles to be reused
cg.addEmptyConstructor(ACC_PUBLIC);
try {
cg.getJavaClass().dump("bin/symjava/bytecode/"+clsName+".class");
} catch (java.io.IOException e) {
System.err.println(e);
}
return cg;
}
/**
* Compile a BytecodeVecFunc:
* void apply(double[] output, int outPos, double[] x, double[] y, ...)
*
* @param expr
* @param output
* @param args
* @return
*/
public static BytecodeVecFunc compileVecFunc(Expr expr, LCArray output, Expr ...args) {
ClassGen cg = _compileVecFunc(null, expr, output, args);
FuncClassLoader<BytecodeVecFunc> fcl = new FuncClassLoader<BytecodeVecFunc>();
BytecodeVecFunc fun = fcl.newInstance(cg);
return fun;
}
public static BytecodeVecFunc compileVecFunc(String name, Expr expr, LCArray output, Expr ...args) {
ClassGen cg = _compileVecFunc(name, expr, output, args);
FuncClassLoader<BytecodeVecFunc> fcl = new FuncClassLoader<BytecodeVecFunc>();
BytecodeVecFunc fun = fcl.newInstance(cg);
return fun;
}
/**
* TODO: remove parameter output
* @param expr
* @param args
* @return
*/
public static BytecodeVecFunc compileVecFunc(Expr expr, Expr ...args) {
return compileVecFunc(null, expr, args);
}
public static BytecodeVecFunc compileVecFunc(String name, Expr expr, Expr ...args) {
LCArray output = LCArray.getDoubleArray("output");
ClassGen cg = _compileVecFunc(name, expr, output, args);
FuncClassLoader<BytecodeVecFunc> fcl = new FuncClassLoader<BytecodeVecFunc>();
BytecodeVecFunc fun = fcl.newInstance(cg);
return fun;
}
public static ClassGen _compileVecFunc(String name, Expr expr, LCArray output, Expr ...args) {
String packageName = "symjava.bytecode";
String clsName = name;
if(clsName == null)
clsName = expr.getClass().getSimpleName() + System.currentTimeMillis();
String fullClsName = packageName+"."+clsName;
ClassGen cg = new ClassGen(fullClsName, "java.lang.Object",
"<generated>", ACC_PUBLIC | ACC_SUPER, new String[]{"symjava.bytecode.BytecodeVecFunc"});
ConstantPoolGen cp = cg.getConstantPool(); // cg creates constant pool
InstructionList il = new InstructionList();
InstructionFactory factory = new InstructionFactory(cg);
short acc_flags = ACC_PUBLIC;
MethodGen mg = new MethodGen(acc_flags, // access flags
Type.VOID, // return type
new Type[] { // argument types
new ArrayType(Type.DOUBLE, 1),
Type.INT,
new ArrayType(Type.DOUBLE, 2)
},
new String[] { "outAry", "outPos", "args" }, // arg names
"apply", fullClsName, // method, class
il, cp);
HashMap<String, Integer> argsMap = new HashMap<String, Integer>();
//extract arguments automatically
if(args == null || args.length == 0)
args = Utils.extractSymbols(expr).toArray(new Expr[]{});
for(int i=0; i<args.length; i++) {
argsMap.put(args[i].getLabel(), i);
}
//special symbol for output, see example ExampleDotProduct
//TODO remove output?
//We can use LCReturn instead of using an output symbol?
//LCReturn will copy the result for outAry in vector case.
argsMap.put(output.getLabel(), 1);
System.out.println("Generating bytecode for: "+fullClsName);
StringBuilder sb = new StringBuilder();
sb.append("void apply(double[] output, int outPos,");
for(Expr a : args)
sb.append(" double[] ").append(a).append(",");
sb.delete(sb.length()-1, sb.length());
sb.append(") = ");
sb.append(expr);
System.out.println(sb.toString());
// Declare local variables
List<Expr> vars = Utils.extractSymbols(expr);
for(Expr var : vars) {
if(var instanceof LCVar) {
LCVar cv = (LCVar)var;
if(argsMap.get(cv.getName()) != null)
continue; // Skip arguments (non local variables)
int indexLVT = BytecodeUtils.declareLocal(cv, mg, il);
cv.setLVTIndex(indexLVT);
}
}
expr.bytecodeGen(fullClsName, mg, cp, factory, il, argsMap, 3, null);
//Move to LCReturn
// if(expr.getType() == TYPE.VECTOR) {
// //Copy results to outAry
// LocalVariableGen lg = mg.addLocalVariable("l_ret_len",
// Type.INT, null, null);
// int idx = lg.getIndex();
// il.append(factory.createInvoke("Jama.Matrix", "getColumnPackedCopy",
// new ArrayType(Type.DOUBLE,1), new Type[] {},
// Constants.INVOKEVIRTUAL));
// il.append(InstructionConstants.DUP);
// il.append(InstructionConstants.ARRAYLENGTH);
// lg.setStart(il.append(new ISTORE(idx)));
//
// il.append(new PUSH(cp, 0));
// il.append(InstructionConstants.ALOAD_1); //outAry (output buffer)
// il.append(InstructionConstants.ILOAD_2); //outPos (start position of output buffer)
// il.append(new ILOAD(idx));
// //Call System.arraycopy(src, srcPos, dest, destPos, length);
// il.append(factory.createInvoke("java.lang.System", "arraycopy",
// Type.VOID, new Type[] { Type.OBJECT, Type.INT, Type.OBJECT, Type.INT, Type.INT },
// Constants.INVOKESTATIC));
// /*
// 33: invokevirtual #20 // Method Jama/Matrix.getColumnPackedCopy:()[D
// 36: dup
// 37: arraylength
// 38: istore 6
// 40: iconst_0
// 41: aload_1
// 42: iload_2
// 43: iload 6
// 45: invokestatic #26 // Method java/lang/System.arraycopy:(Ljava/lang/Object;ILjava/lang/Object;II)V
// LocalVariableTable:
// Start Length Slot Name Signature
// 0 49 0 this Lsymjava/bytecode/Multiply1451587171120;
// 0 49 1 outAry [D
// 0 49 2 outPos I
// 0 49 3 args [[D
// 11 38 4 l_A LJama/Matrix;
// 26 23 5 l_x LJama/Matrix;
// 38 11 6 l_ret_len I
//
// */
// }
il.append(InstructionConstants.RETURN);
mg.setMaxStack();
cg.addMethod(mg.getMethod());
il.dispose(); // Allow instruction handles to be reused
cg.addEmptyConstructor(ACC_PUBLIC);
try {
cg.getJavaClass().dump("bin/symjava/bytecode/"+clsName+".class");
} catch (java.io.IOException e) {
System.err.println(e);
}
return cg;
}
}