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package com.seaofnodes.simple;
import com.seaofnodes.simple.codegen.CodeGen;
import com.seaofnodes.simple.node.*;
import org.junit.Assert;
import org.junit.Test;
import static org.junit.Assert.*;
public class Chapter08Test {
@Test
public void testEx6() {
CodeGen code = new CodeGen(
"""
while(arg < 10) {
arg = arg + 1;
if (arg == 5)
break;
if (arg == 6)
break;
}
return arg;
""");
code.parse().opto();
assertEquals("return Phi(Region,(Phi(Loop,arg,Add)+1),Add,Phi_arg);", code.print());
assertTrue(code.ctrl() instanceof RegionNode);
Assert.assertEquals( "5", Eval2.eval(code, 1));
Assert.assertEquals("10", Eval2.eval(code, 6));
}
@Test
public void testEx5() {
CodeGen code = new CodeGen(
"""
int a = 1;
while(arg < 10) {
arg = arg + 1;
if (arg == 5)
continue;
if (arg == 7)
continue;
a = a + 1;
}
return a;
""");
code.parse().opto();
assertEquals("return Phi(Loop,1,Phi(Region,Phi_a,(Phi_a+1),Phi_a));", code.print());
assertTrue(code.ctrl() instanceof CProjNode);
}
@Test
public void testEx4() {
CodeGen code = new CodeGen(
"""
while(arg < 10) {
arg = arg + 1;
if (arg == 5)
continue;
if (arg == 6)
break;
}
return arg;
""");
code.parse().opto();
assertEquals("return Phi(Region,Phi(Loop,arg,(Phi_arg+1)),Add);", code.print());
assertTrue(code.ctrl() instanceof RegionNode);
}
@Test
public void testEx3() {
CodeGen code = new CodeGen(
"""
while(arg < 10) {
arg = arg + 1;
if (arg == 6)
break;
}
return arg;
""");
code.parse().opto();
assertEquals("return Phi(Region,Phi(Loop,arg,(Phi_arg+1)),Add);", code.print());
assertTrue(code.ctrl() instanceof RegionNode);
}
@Test
public void testEx2() {
CodeGen code = new CodeGen(
"""
while(arg < 10) {
arg = arg + 1;
if (arg == 5)
continue;
if (arg == 6)
continue;
}
return arg;
""");
code.parse().opto();
assertEquals("return Phi(Loop,arg,(Phi_arg+1));", code.print());
assertTrue(code.ctrl() instanceof CProjNode);
}
@Test
public void testEx1() {
CodeGen code = new CodeGen(
"""
while(arg < 10) {
arg = arg + 1;
if (arg == 5)
continue;
}
return arg;
""");
code.parse().opto();
assertEquals("return Phi(Loop,arg,(Phi_arg+1));", code.print());
assertTrue(code.ctrl() instanceof CProjNode);
}
@Test
public void testRegress1() {
CodeGen code = new CodeGen(
"""
while( arg < 10 ) {
int a = arg+2;
if( a > 4 )
break;
}
return arg;
""");
code.parse().opto();
assertEquals("return arg;", code.print());
}
@Test
public void testRegress2() {
CodeGen code = new CodeGen("if(1) return 0; else while(arg>- -arg) arg=arg+1; return 0;");
code.parse().opto();
assertEquals("return 0;", code.print());
}
@Test
public void testBreakOutsideLoop() {
try {
new CodeGen("""
if(arg <= 10) {
break;
arg = arg + 1;
}
return arg;
""").parse();
fail();
} catch( RuntimeException e ) {
assertEquals("No active loop for a break or continue",e.getMessage());
}
}
@Test
public void testRegress3() {
CodeGen code = new CodeGen("""
while(arg < 10) {
break;
}
return arg;
""");
code.parse().opto();
assertEquals("return arg;", code.print());
}
@Test
public void testRegress4() {
CodeGen code = new CodeGen("""
int a = 1;
while(arg < 10) {
a = a + 1;
if (arg > 2) {
int a = 17;
break;
}
}
return a;
""");
code.parse().opto();
assertEquals("return Phi(Region,Phi(Loop,1,(Phi_a+1)),Add);", code.print());
assertTrue(code.ctrl() instanceof RegionNode);
}
@Test
public void testRegress5() {
CodeGen code = new CodeGen("""
int a = 1;
while(1) {
a = a + 1;
if (a<10) continue;
break;
}
return a;
""");
code.parse().opto();
assertEquals("return (Phi(Loop,1,Add)+1);", code.print());
assertTrue(code.ctrl() instanceof CProjNode prj && prj._idx==1 );
}
}
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