Ch# Chapter 19: Instruction Selection and Portable Compilationlinear-chapter19

Co-authored-by: hadha <helsgithub15@gmail.com>
Co-authored-by: Tamás Hadházy <85063808+Hels15@users.noreply.github.com>

1 files changed, 21 insertions, 0 deletions

diff --git a/src/main/java/com/seaofnodes/simple/Machine.java b/src/main/java/com/seaofnodes/simple/Machine.java
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index 00000000..b29e9aba
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+++ b/src/main/java/com/seaofnodes/simple/Machine.java
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+package com.seaofnodes.simple;
+
+import com.seaofnodes.simple.RegMask;
+import com.seaofnodes.simple.node.CFGNode;
+import com.seaofnodes.simple.node.IfNode;
+import com.seaofnodes.simple.node.Node;
+
+abstract public class Machine {
+    // Human readable machine name.  Something like "x86-64" or "arm" or "risc5"
+    public abstract String name();
+    // Human-readable name for a register number, e.g. "RAX" or "R0"
+    public abstract String reg( int reg );
+    // Create a split op; any register to any register, including stack slots
+    public abstract Node split();
+    // Return a MachNode unconditional branch
+    public abstract CFGNode jump();
+    // Break an infinite loop
+    public abstract IfNode never( CFGNode ctrl );
+    // Instruction select from ideal nodes
+    public abstract Node instSelect( Node n );
+}