Version 1.6.72

Cherry-pick: Use AtomicInteger for increment synthesized
service-loader methods
CL: https://r8-review.googlesource.com/48420

Bug: 148929520
Change-Id: I19eec5602b9e948d2cdfbd046f547d5f9efaf82d
diff --git a/src/main/java/com/android/tools/r8/Version.java b/src/main/java/com/android/tools/r8/Version.java
index b58e056..23250fc 100644
--- a/src/main/java/com/android/tools/r8/Version.java
+++ b/src/main/java/com/android/tools/r8/Version.java
@@ -11,7 +11,7 @@
 
   // This field is accessed from release scripts using simple pattern matching.
   // Therefore, changing this field could break our release scripts.
-  public static final String LABEL = "1.6.71";
+  public static final String LABEL = "1.6.72";
 
   private Version() {
   }
diff --git a/src/main/java/com/android/tools/r8/ir/optimize/ServiceLoaderRewriter.java b/src/main/java/com/android/tools/r8/ir/optimize/ServiceLoaderRewriter.java
index 451788f..db13388 100644
--- a/src/main/java/com/android/tools/r8/ir/optimize/ServiceLoaderRewriter.java
+++ b/src/main/java/com/android/tools/r8/ir/optimize/ServiceLoaderRewriter.java
@@ -35,6 +35,7 @@
 import java.util.Collections;
 import java.util.List;
 import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.atomic.AtomicInteger;
 
 /**
  * ServiceLoaderRewriter will attempt to rewrite calls on the form of: ServiceLoader.load(X.class,
@@ -72,6 +73,8 @@
   private ConcurrentHashMap<DexType, DexEncodedMethod> synthesizedServiceLoaders =
       new ConcurrentHashMap<>();
 
+  private AtomicInteger atomicInteger = new AtomicInteger(0);
+
   private final AppView<? extends AppInfoWithLiveness> appView;
 
   public ServiceLoaderRewriter(AppView<? extends AppInfoWithLiveness> appView) {
@@ -217,7 +220,7 @@
             .createMethod(
                 serviceLoaderType,
                 proto,
-                SERVICE_LOADER_METHOD_PREFIX_NAME + synthesizedServiceLoaders.size());
+                SERVICE_LOADER_METHOD_PREFIX_NAME + atomicInteger.incrementAndGet());
     MethodAccessFlags methodAccess =
         MethodAccessFlags.fromSharedAccessFlags(Constants.ACC_PUBLIC | Constants.ACC_STATIC, false);
     DexEncodedMethod encodedMethod =