Chapter 24b: SCCP Across Functionslinear-chapter24b

Co-authored-by: Tamás Hadházy <85063808+Hels15@users.noreply.github.com>
Co-authored-by: Hsiang-Ying Fu <66062782+fuhsnn@users.noreply.github.com>
Co-authored-by: fuhsnn <66062782+fuhsnn@users.noreply.github.com>
Co-authored-by: Symious <14933944+symious@users.noreply.github.com>
Co-authored-by: Jun Kawasaki <jun784@gmail.com>
Co-authored-by: Hadházy Tamás <helsgithub15@gmail.com>
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>

1 files changed, 5 insertions, 13 deletions

diff --git a/src/test/java/com/seaofnodes/simple/SccpTest.java b/src/test/java/com/seaofnodes/simple/SccpTest.java
index afa0ec58..cad1b7de 100644
--- a/src/test/java/com/seaofnodes/simple/SccpTest.java
+++ b/src/test/java/com/seaofnodes/simple/SccpTest.java
@@ -7,25 +7,17 @@ import org.junit.Test;
 import static org.junit.Assert.*;
 
 public class SccpTest {
-    @Test public void testLoopFixedPoint() {
-        var code = new CodeGen("int x=1; while(arg) { x=2-x; arg--; } return x;").parse().iter();
-        assertFalse(code.link(code._main).ret().expr()._type.isConstant());
-        code.opto();
-        assertSame(TypeInteger.TRUE,code.link(code._main).ret().expr()._type);
-        code.driver(CodeGen.Phase.LocalSched);
-        assertEquals("1",Eval2.eval(code,4));
-    }
-
-    @Test public void testConservativeCalls() {
+    @Test public void testCallArgumentFlow() {
         var code = new CodeGen("val f={ int x -> x+1; }; return f(1)+f(2);").parse().iter().opto();
         int[] parms = {0};
         code._start.walk(n -> {
             if( n instanceof ParmNode p && "x".equals(p._label) ) {
                 parms[0]++;
-                assertSame(TypeInteger.BOT,p._type);
-                assertTrue(p.fun().in(1) instanceof StartNode);
+                TypeInteger t = (TypeInteger)p._type;
+                assertEquals(1,t._min);
+                assertEquals(2,t._max);
+                assertFalse(p.fun().in(1) instanceof StartNode);
             }
-            if( n instanceof CallEndNode cend ) assertEquals(1,cend.nIns());
             return null;
         });
         assertEquals(1,parms[0]);