From 2aa8c5d1d0659bd1c828134f1a1f14d025a2d0f1 Mon Sep 17 00:00:00 2001
From: Cliff Click <cliffc@acm.org>
Date: Fri, 7 Feb 2025 08:58:36 -0800
Subject: Ch# Chapter 19: Instruction Selection and Portable Compilation
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Co-authored-by: hadha <helsgithub15@gmail.com>
Co-authored-by: Tamás Hadházy <85063808+Hels15@users.noreply.github.com>
---
 src/main/java/com/seaofnodes/simple/IRPrinter.java | 27 +++++++++++-----------
 1 file changed, 13 insertions(+), 14 deletions(-)

(limited to 'src/main/java/com/seaofnodes/simple/IRPrinter.java')

diff --git a/src/main/java/com/seaofnodes/simple/IRPrinter.java b/src/main/java/com/seaofnodes/simple/IRPrinter.java
index aa498b16..3cddacfd 100644
--- a/src/main/java/com/seaofnodes/simple/IRPrinter.java
+++ b/src/main/java/com/seaofnodes/simple/IRPrinter.java
@@ -6,7 +6,7 @@ import java.util.ArrayList;
 import java.util.BitSet;
 import java.util.HashMap;
 
-public class IRPrinter {
+public abstract class IRPrinter {
 
     // Print a node on 1 line, columnar aligned, as:
     // NNID NNAME DDEF DDEF  [[  UUSE UUSE  ]]  TYPE
@@ -55,10 +55,8 @@ public class IRPrinter {
             Node n = rpos.get(i);
             if( n instanceof CFGNode || n.isMultiHead() ) {
                 if( !gap ) sb.p("\n"); // Blank before multihead
-                if( n instanceof FunNode fun ) {
-                    TypeFunPtr sig = fun.sig();
-                    sig.print(sb.p("--- ").p(sig._name==null ? "" : sig._name).p(" "),false).p("----------------------\n");
-                }
+                if( n instanceof FunNode fun )
+                    fun.sig().print(sb.p("--- ").p(fun._name==null ? "" : fun._name).p(" "),false).p("----------------------\n");
                 printLine( n, sb );         // Print head
                 while( --i >= 0 ) {
                     Node t = rpos.get(i);
@@ -66,8 +64,8 @@ public class IRPrinter {
                     printLine( t, sb );
                 }
                 if( n instanceof ReturnNode ret ) {
-                    TypeFunPtr sig = ret.fun().sig();
-                    sig.print(sb.p("--- ").p(sig._name==null ? "" : sig._name).p(" "),false).p("----------------------\n");
+                    FunNode fun = ret.fun();
+                    fun.sig().print(sb.p("--- ").p(fun._name==null ? "" : fun._name).p(" "),false).p("----------------------\n");
                 }
                 if( !(n instanceof CallNode) ) {
                     sb.p("\n"); // Blank after multitail
@@ -176,12 +174,12 @@ public class IRPrinter {
     private static String _prettyPrintScheduled( Node node, int depth ) {
         // Backwards DFS walk to depth.
         HashMap<Integer,Integer> ds = new HashMap<>();
-        ArrayList<Node> ns = new ArrayList<>();
+        Ary<Node> ns = new Ary<>(Node.class);
         _walk(ds,ns,node,depth);
         // Remove data projections, these are force-printed behind their multinode head
         for( int i=0; i<ns.size(); i++ ) {
             if( ns.get(i) instanceof ProjNode proj && !(proj.in(0) instanceof CFGNode) ) {
-                Utils.del(ns,i--);
+                ns.del(i--);
                 ds.remove(proj._nid);
             }
         }
@@ -192,11 +190,11 @@ public class IRPrinter {
             CFGNode blk = null;
             for( Node n : ns ) {
                 CFGNode cfg = n instanceof CFGNode cfg0 && cfg0.blockHead() ? cfg0 : n.cfg0();
-                if( blk==null || cfg.idepth() < blk.idepth() || (blk instanceof FunNode && !(cfg instanceof FunNode)))
+                if( blk==null || cfg.idepth() < blk.idepth() )
                     blk = cfg;
             }
             Integer d = ds.remove(blk._nid);
-            ns.remove(blk);
+            ns.del(ns.find(blk));
 
             // Print block header
             sb.p("%-13.13s".formatted(label(blk)+":"));
@@ -244,7 +242,7 @@ public class IRPrinter {
         return sb.toString();
     }
 
-    private static void _walk( HashMap<Integer,Integer> ds, ArrayList<Node> ns, Node node, int d ) {
+    private static void _walk( HashMap<Integer,Integer> ds, Ary<Node> ns, Node node, int d ) {
         Integer nd = ds.get(node._nid);
         if( nd!=null && d <= nd ) return; // Been there, done that
         Integer old = ds.put(node._nid,d) ;
@@ -270,11 +268,12 @@ public class IRPrinter {
         if( !blk.blockHead() ) blk = blk.cfg(0);
         sb.p( "%-9.9s ".formatted( label( blk ) ) );
     }
-    static void printLine( Node n, SB sb, Ary<Node> bns, int i, HashMap<Integer,Integer> ds, ArrayList<Node> ns ) {
+    static void printLine( Node n, SB sb, Ary<Node> bns, int i, HashMap<Integer,Integer> ds, Ary<Node> ns ) {
         printLine( n, sb );
         if( i != -1 ) bns.del(i);
         ds.remove(n._nid);
-        ns.remove(n);
+        int idx = ns.find(n);
+        if( idx!=-1 ) ns.del(idx);
     }
 
 }
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