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package com.seaofnodes.simple;
import com.seaofnodes.graph.GraphObserver;
import com.seaofnodes.simple.codegen.CodeGen;
import com.seaofnodes.simple.codegen.CodeGen.Phase;
import com.seaofnodes.simple.node.Node;
import java.util.ArrayList;
import org.junit.Test;
import static org.junit.Assert.*;
public class PhaseTest {
private static final String SRC = "int sum=0; for(int i=0; i<arg; i++) sum+=i; return sum;";
@Test public void testStopAndResume() {
ArrayList<String> phases = new ArrayList<>();
CodeGen code = new CodeGen(SRC);
code._obs = new GraphObserver<Node>() {
@Override public void before(Node n) {}
@Override public void after(Node n, Node repl, boolean applied) {}
@Override public void phase(String phase) { phases.add(phase); }
};
code.driver(Phase.Iter);
assertEquals(Phase.Iter,code._phase);
assertEquals("Parse Iter",String.join(" ",phases));
code.driver(Phase.TypeCheck);
code.driver(Phase.TypeCheck); // Repeated requests do not rerun phases.
code.driver(Phase.LoopTree);
assertEquals(Phase.LoopTree,code._phase);
code.driver(Phase.LocalSched);
assertEquals("Parse Iter Opto IterPostOpto FinalizeIR TypeCheck LoopTree Schedule LocalSched",String.join(" ",phases));
assertEquals("45",Eval2.eval(code,10));
}
@Test public void testResumeMachineCompilation() {
CodeGen staged = new CodeGen(SRC).driver(Phase.TypeCheck);
staged.driver(Phase.Select,"x86_64_v2","SystemV");
staged.driver(Phase.Encoding,"x86_64_v2","SystemV");
byte[] bits = staged._encoding._bits.toByteArray();
CodeGen direct = new CodeGen(SRC).driver(Phase.Encoding,"x86_64_v2","SystemV");
assertArrayEquals(bits,direct._encoding._bits.toByteArray());
}
@Test public void testOptoRequiresIter() {
CodeGen code = new CodeGen(SRC).parse();
try {
code.opto();
fail("Opto must not implicitly run Iter");
} catch( AssertionError expected ) {
assertEquals("Cannot run Opto after Parse",expected.getMessage());
}
code.iter().opto();
assertEquals(Phase.Opto,code._phase);
code.driver(Phase.LocalSched);
assertEquals("45",Eval2.eval(code,10));
}
}
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