Add the unit test MergeAllVirts (openjdk#10)

Co-authored-by: Xin Liu <xxinliu@amazon.com>

Author: navyxliu

PEA/MergeAllVirts.java

@@ -0,0 +1,59 @@
+class MergeAllVirts {
+    int a;
+    int b;
+    int c = 100;
+
+    public MergeAllVirts() {}
+
+    public int sum() {
+        return a + b + c;
+    }
+
+    public static int add(boolean cond) {
+        MergeAllVirts obj = new MergeAllVirts();
+        if (cond) {
+            obj.a = 1;
+        } else {
+            obj.b = 2;
+        }
+        //obj3 = phi(obj1, obj2);
+        return obj.sum();
+    }
+
+    public static MergeAllVirts cached;
+    public static void escaped(boolean cond) {
+        MergeAllVirts obj = new MergeAllVirts();
+
+        if (cond) {
+            obj.a = 1;
+        } else {
+            obj.b = 2;
+        }
+        // return obj;  we don't materialize at exit. if it's virtual, keep it virtual.
+        cached = obj; // materialize here.
+    }
+
+    static void check_result(boolean cond, int sum) {
+        if ((cond && sum != 101) || (!cond && sum != 102)) {
+            throw new RuntimeException("wrong answer: " + sum);
+        }
+    }
+    public static void main(String[] args) {
+        long iterations = 0;
+
+        try {
+            while (true) {
+                boolean cond =  0 == (iterations & 0xf);
+                int sum = MergeAllVirts.add(cond);
+                check_result(cond, sum);
+
+                MergeAllVirts.escaped(cond);
+                check_result(cond, cached.sum());
+
+                iterations++;
+            }
+        } finally {
+            System.err.println("Epsilon Test: " + iterations);
+        }
+    }
+}

PEA/auto.sh

@@ -1,15 +1,19 @@
-#!/bin/bash 
-
-set -x
-JVM_FLAGS="-XX:+PrintEscapeAnalysis -XX:+PrintEliminateAllocations -XX:+PrintOptoAssembly"
-./run1.sh -Xlog:gc -XX:+DoPartialEscapeAnalysis $JVM_FLAGS
-./run1_ivanov.sh -Xlog:gc -XX:+DoPartialEscapeAnalysis $JVM_FLAGS
-./run2.sh -Xlog:gc -XX:+DoPartialEscapeAnalysis $JVM_FLAGS
-./run2_merykitty.sh -Xlog:gc -XX:+DoPartialEscapeAnalysis $JVM_FLAGS
-./run2b.sh -Xlog:gc -XX:+DoPartialEscapeAnalysis $JVM_FLAGS
-./run2_1.sh -Xlog:gc -XX:+DoPartialEscapeAnalysis $JVM_FLAGS
-./run3_1.sh -Xlog:gc -XX:+DoPartialEscapeAnalysis $JVM_FLAGS
-./run3_2.sh -Xlog:gc -XX:+DoPartialEscapeAnalysis $JVM_FLAGS
-./run3.sh -Xlog:gc -XX:+DoPartialEscapeAnalysis $JVM_FLAGS
-./run_str.sh  -Xlog:gc -XX:+DoPartialEscapeAnalysis -XX:-UseTLAB  $JVM_FLAGS
-./run_exception.sh -Xlog:gc -XX:+DoPartialEscapeAnalysis $JVM_FLAGS
+#!/bin/bash
+
+JVM_FLAGS="-XX:+PrintEscapeAnalysis -XX:+PrintEliminateAllocations -XX:+PrintOptoAssembly -Xlog:gc -XX:+DoPartialEscapeAnalysis"
+
+echo "using" `which java`
+java --version
+
+for t in run*.sh
+do
+    ./$t $JVM_FLAGS > $t.log
+
+    exitcode=$?
+    if [ $exitcode -eq 0 ] || [ $exitcode -eq 3 ];  then
+        echo -e "[$t]\tpassed."
+    else
+        echo -e "[$t]\tfailed!"
+        exit 1
+    fi
+done

PEA/run1.sh

@@ -1,2 +1,2 @@
-#!/usr/bin/bash 
-java -showversion -Xcomp -Xms32M -Xmx32M -XX:+AlwaysPreTouch -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC -XX:-UseOnStackReplacement -XX:+UseTLAB -XX:CompileOnly='Example1.foo' -XX:CompileCommand=dontinline,Example1.blackhole $* Example1
+#!/usr/bin/bash
+java -Xcomp -Xms32M -Xmx32M -XX:+AlwaysPreTouch -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC -XX:-UseOnStackReplacement -XX:+UseTLAB -XX:CompileOnly='Example1.foo' -XX:CompileCommand=dontinline,Example1.blackhole $* Example1

PEA/run1_ivanov.sh

@@ -1,2 +1,2 @@
-#!/usr/bin/bash 
+#!/usr/bin/bash
 java -Xcomp -Xms32M -Xmx32M -XX:+AlwaysPreTouch -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC -XX:-UseOnStackReplacement -XX:+UseTLAB -XX:CompileOnly='Example1_ivanov.ivanov' -XX:CompileCommand=dontinline,Example1_ivanov.blackhole $* Example1_ivanov

PEA/run2.sh

@@ -1,2 +1,2 @@
-#!/usr/bin/bash 
-java -showversion -Xcomp -Xms32M -Xmx32M -XX:+AlwaysPreTouch -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC -XX:-UseOnStackReplacement -XX:-UseTLAB -XX:CompileOnly='Example2.foo' -XX:CompileCommand=dontinline,Example2.blackhole $* Example2
+#!/usr/bin/bash
+java -Xcomp -Xms32M -Xmx32M -XX:+AlwaysPreTouch -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC -XX:-UseOnStackReplacement -XX:-UseTLAB -XX:CompileOnly='Example2.foo' -XX:CompileCommand=dontinline,Example2.blackhole $* Example2

PEA/run2_1.sh

@@ -1,3 +1,3 @@
-#!/usr/bin/bash 
+#!/usr/bin/bash
 java -Xms32M -Xmx32M -XX:+AlwaysPreTouch -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC -XX:-UseOnStackReplacement -XX:+UseTLAB -XX:CompileCommand='compileonly,Example2_1::foo*' -XX:CompileCommand=dontinline,Example2.blackhole $* Example2_1
 java -Xcomp -Xms32M -Xmx32M -XX:+AlwaysPreTouch -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC -XX:-UseOnStackReplacement -XX:+UseTLAB -XX:CompileCommand='compileonly,Example2_1::foo*' -XX:CompileCommand=dontinline,Example2.blackhole $* Example2_1

PEA/run2_merykitty.sh

@@ -1,2 +1,2 @@
-#!/usr/bin/bash 
+#!/usr/bin/bash
 java -ea -Xcomp -Xms32M -Xmx32M -XX:+AlwaysPreTouch -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC -XX:-UseOnStackReplacement -XX:-UseTLAB -XX:CompileOnly='Example2_merykitty.foo' -XX:CompileCommand=dontinline,Example2_merykitty.blackhole $* Example2_merykitty

PEA/run3.sh

@@ -1 +1,2 @@
+#!/usr/bin/bash
 java -XX:+PrintCompilation -XX:CompileCommand='CompileOnly,Example3::confined_close' -XX:CompileCommand=quiet -XX:-UseOnStackReplacement -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC -Xms32M -Xmx32M -XX:-TieredCompilation  $* Example3

PEA/run_merge_all_virts.sh

@@ -0,0 +1,2 @@
+#!/usr/bin/bash
+java -Xms32M -Xmx32M -XX:+AlwaysPreTouch -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC -XX:-TieredCompilation -XX:-UseOnStackReplacement -XX:-UseTLAB -XX:CompileCommand='compileonly,MergeAllVirts::*' $* MergeAllVirts

PEA/run_str.sh

@@ -1,2 +1,2 @@
-#!/usr/bin/bash 
+#!/usr/bin/bash
 java -Xcomp -Xms16M -Xmx16M -XX:+UnlockExperimentalVMOptions -XX:+AlwaysPreTouch -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC -XX:-UseOnStackReplacement -XX:CompileOnly='Str.strBuilderRepro' -XX:-Inline $* Str