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Cleanup 3

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master
Apoorva Ranade 4 years ago
parent 64dfdcd78d
commit 832b4f8d98
1 changed files with 20 additions and 36 deletions
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54
src/main/java/chocopy/pa3/CodeGenImpl.java
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@ -769,12 +769,6 @@ 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 +786,6 @@ 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");
@ -802,13 +795,13 @@ 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.emitJAL(streqlLabel, "Invoke method:streql");
sp_off -= 2;
backend.emitADDI(SP, FP, -sp_off*wordSize, "restore sp");
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.emitJAL(streqlLabel, "Invoke method:streql");
sp_off -= 2;
backend.emitADDI(SP, FP, -sp_off*wordSize, "Restore sp");
}
else if(operator.equals("!="))
{
@ -866,9 +859,7 @@ 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;
Identifier targetID = (Identifier)node;
Object var = getVar(targetID);
if(var instanceof StackVarRuntimeInfo){
StackVarRuntimeInfo rtinfo = (StackVarRuntimeInfo) var;
@ -881,12 +872,10 @@ public class CodeGenImpl extends CodeGenBase
return Register.A0;
}
@Override
public Register analyze(WhileStmt node)
{
System.out.println("Inside WhileStmt: ");
Label startLoop = generateLocalLabel();
Label startLoop = generateLocalLabel();
backend.emitLocalLabel(startLoop, "Beginning of while loop");
Register result = node.condition.dispatch(this);
Label endLoop = generateLocalLabel();
@ -933,18 +922,13 @@ 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);
backend.emitLI(A0, node.value, "Load integer literal " + 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 +995,6 @@ 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 +1014,6 @@ 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 +1049,7 @@ 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);
@ -1124,7 +1106,7 @@ public class CodeGenImpl extends CodeGenBase
backend.emitLBU(T0, T0, 0, "Load character");
backend.emitSLLI(A0, T0, 2, "A0 = T0 * 4");
backend.emitSLLI(T0, T0, 4, "T0 = T0 * 16");
backend.emitADD(T0, T0, A0, " T0*20 = offset to all chars");
backend.emitADD(T0, T0, A0, "T0*20 = offset to all chars");
backend.emitLA(A0, allCharsLabel, "All chars");
backend.emitADD(A0, A0, T0, "get the char");
}
@ -1149,7 +1131,7 @@ public class CodeGenImpl extends CodeGenBase
backend.emitADDI(A0, obj, getAttrOffset(objectClass, node.member.name), "get address of attr");
else
backend.emitLW(A0, obj, getAttrOffset(objectClass, node.member.name),
String.format("Get value of attribute: %s.%s", objectClass.getClassName(), node.member.name));
String.format("Get value of attribute: %s.%s", objectClass.getClassName(), node.member.name));
return A0;
}
}
@ -1172,7 +1154,8 @@ 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 +1173,8 @@ 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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