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Merge branch 'sanjar/improvements' of https://github.com/nyu-compiler-construction/pa3-chocopy-code-generation-mjolnir into sanjar/improvements

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master
Sanjar Ahmadov 4 years ago
parent 6deb97be81 ee03f7b1c0
commit 47d85f8df4
1 changed files with 53 additions and 87 deletions
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94
src/main/java/chocopy/pa3/CodeGenImpl.java
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@ -114,14 +114,12 @@ public class CodeGenImpl extends CodeGenBase
// space for control link = 1
// space for static link = 1
// space for locals = num of locals
//int requiredStackSpace = (1 + 1 + 1 + funcInfo.getLocals().size())*wordSize;
String sizelabel = "@" + funcInfo.getFuncName()+".size";
backend.emitADDI(SP, SP, "-"+sizelabel, "Reserve space for stack frame.");
backend.emitSW(RA, SP, sizelabel+"-4", "return address");
backend.emitSW(FP, SP, sizelabel + "-8", "control link");
// if we want to add static link
//backend.emitSW(FP, SP, requiredStackSpace-12, "static link");
backend.emitADDI(FP, SP, sizelabel, "New fp is at old SP.");
backend.emitADDI(FP, SP, sizelabel, "New FP is at old SP.");
StmtAnalyzer stmtAnalyzer = new StmtAnalyzer(funcInfo);
int emptySlotNum = 3;
@ -130,7 +128,7 @@ public class CodeGenImpl extends CodeGenBase
Literal varLiteral = var.getInitialValue();
Register reg = varLiteral.dispatch(stmtAnalyzer);
// All Literals should save locations for the values in A0
backend.emitSW(reg, SP, sizelabel+String.format("-%d",emptySlotNum*wordSize), "Push local variable " + var.getVarName() + " onto stack");
backend.emitSW(reg, SP, sizelabel+String.format("-%d",emptySlotNum*wordSize), "Push local variable: " + var.getVarName() + " onto stack");
emptySlotNum++;
}
@ -274,7 +272,6 @@ public class CodeGenImpl extends CodeGenBase
backend.defineSym(size_label, max_sp*wordSize);
}
// *********** functions start ***********
public Register analyze(CallExpr node)
@ -374,9 +371,11 @@ public class CodeGenImpl extends CodeGenBase
}
else if (expr.getInferredType().equals(Type.BOOL_TYPE))
{
if (!formalParamInfo.getVarType().equals(Type.OBJECT_TYPE) && !formalParamInfo.getVarType().equals(Type.BOOL_TYPE)) {
if(!formalParamInfo.getVarType().equals(Type.OBJECT_TYPE) && !formalParamInfo.getVarType().equals(Type.BOOL_TYPE))
{
backend.emitJAL(errorNI, "Passed argument does not match formal parameter");
} else if ((functionId.name.equals("print"))&&(formalParamInfo.getVarType().equals(Type.OBJECT_TYPE) || formalParamInfo.getVarType().equals(Type.BOOL_TYPE)))
}
else if ((functionId.name.equals("print"))&&(formalParamInfo.getVarType().equals(Type.OBJECT_TYPE) || formalParamInfo.getVarType().equals(Type.BOOL_TYPE)))
{
if(!(args.size() == 1 && (args.get(0) instanceof CallExpr) &&
(sym.get(((CallExpr) args.get(0)).function.name) instanceof ClassInfo)))
@ -388,8 +387,6 @@ public class CodeGenImpl extends CodeGenBase
// So, once expr is evaluated add value inside A0 onto stack as an actual argument
backend.emitSW(A0, FP, -(sp_off) * wordSize, "Push actual argument for " + formalParamName + " onto stack");
}
//System.out.printf("2: %d",sp_off - spaceRequiredForArgs/wordSize - origsp);
backend.emitADDI(SP, FP, -(sp_off)*wordSize, "Set SP to last argument.");
backend.emitJAL(calleeFunctionInfo.getCodeLabel(), "Invoke function: " + functionId.name);
backend.emitADDI(SP, FP, "-"+size_label, "Set SP to stack frame top.");
@ -400,7 +397,6 @@ public class CodeGenImpl extends CodeGenBase
public Register analyze(MethodCallExpr node)
{
System.out.println("Inside MethodCallExpr: " + node.method.member.name);
Register obj = node.method.object.dispatch(this);
int n_args = node.args.size();
@ -532,7 +528,7 @@ public class CodeGenImpl extends CodeGenBase
}
else
{
backend.emitMV(tmp, FP, "Referencing local variable"+info.getVarName());
backend.emitMV(tmp, FP, "Referencing local variable: "+info.getVarName());
}
int idx = varFuncInfo.getVarIndex(info.getVarName());
int paramSize = varFuncInfo.getParams().size();
@ -563,7 +559,7 @@ public class CodeGenImpl extends CodeGenBase
}
else
{
backend.emitSW(reg, Register.FP, -sp_off*wordSize, "Store value to b stored");
backend.emitSW(reg, Register.FP, -sp_off*wordSize, "Store value to be stored");
incSp(1);
boolean old_lvalue = l_value;
l_value = true;
@ -577,7 +573,7 @@ public class CodeGenImpl extends CodeGenBase
tmpHandle = getRegister();
tmp = registerPool[tmpHandle];
}
backend.emitLW(tmp, Register.FP, -sp_off*wordSize, "Load value to b stored");
backend.emitLW(tmp, Register.FP, -sp_off*wordSize, "Load value to be stored");
backend.emitSW(tmp, ret, 0, "Set list element");
if(tmpHandle >= 0)
freeRegister(tmpHandle);
@ -589,8 +585,6 @@ public class CodeGenImpl extends CodeGenBase
@Override
public Register analyze(ExprStmt node)
{
System.out.println("Inside ExprStmt: ");
// backend.emitLW(T6, FP, 0, "Inside ExprStmt: ");
node.expr.dispatch(this);
return null;
}
@ -598,7 +592,6 @@ public class CodeGenImpl extends CodeGenBase
@Override
public Register analyze(IfExpr node)
{
System.out.println("Inside IfExpr: ");
Register result = node.condition.dispatch(this);
Label ln = generateLocalLabel();
elseBlock.push(generateLocalLabel());
@ -606,12 +599,12 @@ public class CodeGenImpl extends CodeGenBase
backend.emitBEQZ(result, elseBlock.peek(),"Jump to end of loop");
result = node.thenExpr.dispatch(this);
if(result != A0)
backend.emitMV(A0, result, "move result");
backend.emitMV(A0, result, "Move result");
backend.emitJ(ln, "Jump to end of if expression");
backend.emitLocalLabel(elseBlock.peek(), "Else part of if expression");
result = node.elseExpr.dispatch(this);
if(result != A0)
backend.emitMV(A0, result, "move result");
backend.emitMV(A0, result, "Move result");
elseBlock.pop();
backend.emitLocalLabel(ln, "End of if expression");
return A0;
@ -620,9 +613,7 @@ public class CodeGenImpl extends CodeGenBase
@Override
public Register analyze(IfStmt node)
{
System.out.println("Inside IfStmt: ");
Register result = node.condition.dispatch(this);
Label ln = generateLocalLabel();
elseBlock.push(generateLocalLabel());
backend.emitBEQZ(result, elseBlock.peek(),"Jump to end of loop");
@ -640,9 +631,7 @@ public class CodeGenImpl extends CodeGenBase
@Override
public Register analyze(BinaryExpr node)
{
System.out.println("Inside BinaryExpr: ");
String operator = node.operator;
//backend.emitLW(T6, FP, 0, "Inside BinaryExpr: ");
if(node.left.getInferredType().equals(Type.INT_TYPE) && node.right.getInferredType().equals(Type.INT_TYPE))
{
@ -705,12 +694,6 @@ public class CodeGenImpl extends CodeGenBase
backend.emitADDI(Register.A0,Register.A0, 1, "Increment by 1");
backend.emitSLT(Register.A0, T0, A0, comment);
}
/* Maybe NA
else if(operator.equals("is"))
{
backend.emitXOR(Register.A0, Register.A0, Register.T0, comment);
backend.emitSEQZ(Register.A0, Register.A0, "Result is True if XOR equals 0");
}*/
else
{
backend.emitJAL(errorNI, "Operator not implemented for integer operands");
@ -719,7 +702,6 @@ public class CodeGenImpl extends CodeGenBase
}
else if(node.left.getInferredType().equals(Type.BOOL_TYPE) && node.right.getInferredType().equals(Type.BOOL_TYPE))
{
// Comparison operators
if(operator.equals("=="))
{
@ -769,12 +751,6 @@ public class CodeGenImpl extends CodeGenBase
backend.emitOR(Register.A0, Register.A0, Register.T0, "OR operation");
backend.emitLocalLabel(label, "Next step after OR");
}
/*Maybe NA
else if(operator.equals("is"))
{
backend.emitXOR(Register.A0, Register.A0, Register.T0, comment);
backend.emitSEQZ(Register.A0, Register.A0, "Result is True if XOR equals 0");
}*/
else
{
backend.emitJAL(errorNI, "Operator not implemented for boolean operands");
@ -792,7 +768,6 @@ public class CodeGenImpl extends CodeGenBase
backend.emitADDI(Register.SP, Register.FP, "-"+size_label, "Set SP to stack frame");
sp_off -= 2;
return Register.A0;
//addLists();
}
else
backend.emitJAL(errorNI, "Operator not implemented for list operands");
@ -803,33 +778,33 @@ public class CodeGenImpl extends CodeGenBase
if(operator.equals("=="))
{
incSp(2);
backend.emitSW(node.left.dispatch(this), FP, (1 - sp_off) *wordSize, "Push argument 0 from last.");
backend.emitSW(node.right.dispatch(this), FP, ( - sp_off) *wordSize, "Push argument 1 from last.");
backend.emitADDI(SP, FP, -sp_off * wordSize, "Set SP to last argument.");
backend.emitSW(node.left.dispatch(this), FP, (1 - sp_off) *wordSize, "Push argument 0 from last");
backend.emitSW(node.right.dispatch(this), FP, ( - sp_off) *wordSize, "Push argument 1 from last");
backend.emitADDI(SP, FP, -sp_off * wordSize, "Set SP to last argument");
backend.emitJAL(streqlLabel, "Invoke method:streql");
sp_off -= 2;
backend.emitADDI(SP, FP, -sp_off*wordSize, "restore sp");
backend.emitADDI(SP, FP, -sp_off*wordSize, "Restore sp");
}
else if(operator.equals("!="))
{
incSp(2);
backend.emitSW(node.left.dispatch(this), FP, (1 - sp_off) *wordSize, "Push argument 0 from last.");
backend.emitSW(node.right.dispatch(this), FP, ( - sp_off) *wordSize, "Push argument 1 from last.");
backend.emitADDI(SP, FP, -sp_off * wordSize, "Set SP to last argument.");
backend.emitSW(node.left.dispatch(this), FP, (1 - sp_off) *wordSize, "Push argument 0 from last");
backend.emitSW(node.right.dispatch(this), FP, ( - sp_off) *wordSize, "Push argument 1 from last");
backend.emitADDI(SP, FP, -sp_off * wordSize, "Set SP to last argument");
backend.emitJAL(strneqlLabel, "Invoke method:strneql");
sp_off -= 2;
backend.emitADDI(SP, FP, -sp_off*wordSize, "restore sp");
backend.emitADDI(SP, FP, -sp_off*wordSize, "Restore SP");
}
else if(operator.equals("+"))
{
incSp(1);
backend.emitSW(node.left.dispatch(this), FP, (- sp_off) *wordSize, "Push argument 0 from last.");
backend.emitSW(node.left.dispatch(this), FP, (- sp_off) *wordSize, "Push argument 0 from last");
incSp(1);
backend.emitSW(node.right.dispatch(this), FP, (- sp_off) *wordSize, "Push argument 1 from last.");
backend.emitADDI(SP, FP, -sp_off * wordSize, "Set SP to last argument.");
backend.emitSW(node.right.dispatch(this), FP, (- sp_off) *wordSize, "Push argument 1 from last");
backend.emitADDI(SP, FP, -sp_off * wordSize, "Set SP to last argument");
backend.emitJAL(strcatLabel, "Invoke method:strcat");
sp_off -= 2;
backend.emitADDI(SP, FP, -sp_off*wordSize, "restore sp");
backend.emitADDI(SP, FP, -sp_off*wordSize, "Restore sp");
}
else
backend.emitJAL(errorNI, "Operator not implemented for String operands");
@ -866,8 +841,6 @@ public class CodeGenImpl extends CodeGenBase
@Override
public Register analyze(Identifier node)
{
//backend.emitLW(T6, FP, 0, "Inside Identifier: ");
System.out.println(node.getInferredType());
Identifier targetID = (Identifier)node;
Object var = getVar(targetID);
if(var instanceof StackVarRuntimeInfo){
@ -881,11 +854,9 @@ public class CodeGenImpl extends CodeGenBase
return Register.A0;
}
@Override
public Register analyze(WhileStmt node)
{
System.out.println("Inside WhileStmt: ");
Label startLoop = generateLocalLabel();
backend.emitLocalLabel(startLoop, "Beginning of while loop");
Register result = node.condition.dispatch(this);
@ -933,18 +904,13 @@ public class CodeGenImpl extends CodeGenBase
return Register.A0;
}
@Override
public Register analyze(IntegerLiteral node) {
System.out.println("Inside IntegerLiteral: " + node.value);
//backend.emitLW(T6, FP, 0, "Inside IntegerLiteral: " + node.value);
public Register analyze(IntegerLiteral node)
{
backend.emitLI(A0, node.value, "Load integer literal " + node.value);
return A0;
}
@Override
public Register analyze(ForStmt node)
{
@ -1011,7 +977,6 @@ public class CodeGenImpl extends CodeGenBase
{
Label startLoop = generateLocalLabel();
Label endLoop = generateLocalLabel();
//Label temp = generateLocalLabel();
r=getRegister();
regs.add(r);
Register iden = registerPool[r];
@ -1031,7 +996,6 @@ public class CodeGenImpl extends CodeGenBase
backend.emitMV(iter, Register.ZERO, "Initialize index variable");
backend.emitSW(iter, Register.FP, -sp_off*wordSize, "Store index on stack");
incSp(1);
//backend.emitADDI(Register.SP, Register.SP, -2*wordSize, "Set SP to last argument");
backend.emitLocalLabel(startLoop, "Start for loop");
backend.emitLW(iter, Register.FP, -(sp_off-1)*wordSize, "Load index from stack");
backend.emitLW(l, Register.FP, -(sp_off-2)*wordSize, "Load string location from stack");
@ -1067,7 +1031,7 @@ public class CodeGenImpl extends CodeGenBase
}
else
{
System.out.println("Iterable not a list or a string");
backend.emitJAL(errorNI, "Operator not implemented");
}
for(int n:regs)
freeRegister(n);
@ -1172,7 +1136,8 @@ public class CodeGenImpl extends CodeGenBase
* error and exit the program. For example, to throw an OOB error: backend.emitJ(errorOob, "Go
* to out-of-bounds error and abort");
*/
protected void emitCustomCode() {
protected void emitCustomCode()
{
emitStdFunc("concat");
emitStdFunc("conslist");
emitStdFunc("strcat");
@ -1190,7 +1155,8 @@ public class CodeGenImpl extends CodeGenBase
}
/** Emit an error routine labeled ERRLABEL that aborts with message MSG. */
private void emitErrorFunc(Label errLabel, String msg) {
private void emitErrorFunc(Label errLabel, String msg)
{
backend.emitGlobalLabel(errLabel);
if(errLabel==errorOob)
backend.emitLI(A0, ERROR_OOB, "Exit code for: " + msg);

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