Chapter 25: Modules, Separate Compilation, and SSA Constructionlinear

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: Claude Opus 5 <noreply@anthropic.com>

1 files changed, 6 insertions, 2 deletions

diff --git a/src/main/java/com/seaofnodes/simple/node/SplitNode.java b/src/main/java/com/seaofnodes/simple/node/SplitNode.java
index 211489fb..0e104c15 100644
--- a/src/main/java/com/seaofnodes/simple/node/SplitNode.java
+++ b/src/main/java/com/seaofnodes/simple/node/SplitNode.java
@@ -3,13 +3,16 @@ package com.seaofnodes.simple.node;
 import com.seaofnodes.print.ExprPrinter;
 
 import com.seaofnodes.simple.codegen.CodeGen;
+import com.seaofnodes.simple.codegen.Encoding;
+import com.seaofnodes.simple.codegen.LRG;
 import com.seaofnodes.simple.type.Type;
 import com.seaofnodes.simple.util.SB;
 
 public abstract class SplitNode extends MachConcreteNode {
+    public final LRG _lrg;      // Live range for split
     public final String _kind;  // Kind of split
-    public final byte _round;
-    public SplitNode(String kind, byte round, Node[] nodes) { super(nodes); _kind = kind; _round = round; }
+    public final byte _round;   // Debugging info for which RegAlloc round
+    public SplitNode(LRG lrg,String kind, byte round, Node[] nodes) { super(nodes); _lrg=lrg; _kind = kind; _round = round; }
     @Override public String op() { return "mov"; }
     @Override protected ExprPrinter<Node> _print1(ExprPrinter<Node> p) {
         p.p("mov(");
@@ -17,6 +20,7 @@ public abstract class SplitNode extends MachConcreteNode {
         else p.n(in(1));
         return p.close();
     }
+    public FunNode fun(Encoding enc) { return enc._code._regAlloc.lrg(this)._fun; }
     @Override public Type compute() { return in(0)._type; }
     @Override public Node idealize() { return null; }
     @Override public void asm(CodeGen code, SB sb) {