IR tool in JIT and download, compile and use of jitwatch

IR

Here are two tools ： One is c1visualizer, My version is 1.10, Download address ：Index of /c1visualizer One is IdealGraphVisualizer.openjdk Medium IGV There is no version number , There is only one simple 1.0-SNAPSHOT This is not a version number , The real version is based on the current openjdk The mainline version number exists , So I used openjdk The mainline version is openjdk20, stay openjdk Source code src/utils/ Directory

Easy to understand some environmental descriptions ：

Environmental Science	edition
operating system ：	macOS 12.4
c1 Visualization tools ：	c1visualizer 1.10
c2 Visualization tools ：	IdealGraphVisualizer,openjdk20 Under the source code version IGV. Because this version of IGV Support jdk17 Environment is running .
At present jdk Environmental Science ：	OracleJdk17
At present debug edition jdk Environmental Science ：	openjdk17

java Code ：

package com.test;
 ​
 public class TestMemory extends BaseTest{
     public static void main(Str