8173605: Remove support for source and target 1.7 option in javac

Reviewed-by: vromero

Author: jddarcy

src/jdk.compiler/share/classes/com/sun/tools/javac/code/Source.java

@@ -163,7 +163,7 @@ private Source(String name) {
         this.name = name;
     }
 
-    public static final Source MIN = Source.JDK7;
+    public static final Source MIN = Source.JDK8;
 
     private static final Source MAX = values()[values().length - 1];
 
@@ -207,26 +207,15 @@ public Target requiredTarget() {
      */
     public enum Feature {
 
-        DIAMOND(JDK7, Fragments.FeatureDiamond, DiagKind.NORMAL),
+        DIAMOND(MIN, Fragments.FeatureDiamond, DiagKind.NORMAL), // Used in Analyzer
         MODULES(JDK9, Fragments.FeatureModules, DiagKind.PLURAL),
         EFFECTIVELY_FINAL_VARIABLES_IN_TRY_WITH_RESOURCES(JDK9, Fragments.FeatureVarInTryWithResources, DiagKind.PLURAL),
         DEPRECATION_ON_IMPORT(MIN, JDK8),
         POLY(JDK8),
         LAMBDA(JDK8, Fragments.FeatureLambda, DiagKind.PLURAL),
-        METHOD_REFERENCES(JDK8, Fragments.FeatureMethodReferences, DiagKind.PLURAL),
         DEFAULT_METHODS(JDK8, Fragments.FeatureDefaultMethods, DiagKind.PLURAL),
-        STATIC_INTERFACE_METHODS(JDK8, Fragments.FeatureStaticIntfMethods, DiagKind.PLURAL),
-        STATIC_INTERFACE_METHODS_INVOKE(JDK8, Fragments.FeatureStaticIntfMethodInvoke, DiagKind.PLURAL),
         STRICT_METHOD_CLASH_CHECK(JDK8),
-        EFFECTIVELY_FINAL_IN_INNER_CLASSES(JDK8),
-        TYPE_ANNOTATIONS(JDK8, Fragments.FeatureTypeAnnotations, DiagKind.PLURAL),
-        ANNOTATIONS_AFTER_TYPE_PARAMS(JDK8, Fragments.FeatureAnnotationsAfterTypeParams, DiagKind.PLURAL),
-        REPEATED_ANNOTATIONS(JDK8, Fragments.FeatureRepeatableAnnotations, DiagKind.PLURAL),
-        INTERSECTION_TYPES_IN_CAST(JDK8, Fragments.FeatureIntersectionTypesInCast, DiagKind.PLURAL),
-        GRAPH_INFERENCE(JDK8),
-        FUNCTIONAL_INTERFACE_MOST_SPECIFIC(JDK8),
-        POST_APPLICABILITY_VARARGS_ACCESS_CHECK(JDK8),
-        MAP_CAPTURES_TO_BOUNDS(MIN, JDK7),
+        GRAPH_INFERENCE(JDK8), // Used in Analyzer
         PRIVATE_SAFE_VARARGS(JDK9),
         DIAMOND_WITH_ANONYMOUS_CLASS_CREATION(JDK9, Fragments.FeatureDiamondAndAnonClass, DiagKind.NORMAL),
         UNDERSCORE_IDENTIFIER(MIN, JDK8),

src/jdk.compiler/share/classes/com/sun/tools/javac/code/Type.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2022, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -2125,21 +2125,6 @@ public void setBounds(InferenceBound ib, List<Type> newBounds) {
 
         /** add a bound of a given kind - this might trigger listener notification */
         public final void addBound(InferenceBound ib, Type bound, Types types) {
-            // Per JDK-8075793: in pre-8 sources, follow legacy javac behavior
-            // when capture variables are inferred as bounds: for lower bounds,
-            // map to the capture variable's upper bound; for upper bounds,
-            // if the capture variable has a lower bound, map to that type
-            if (types.mapCapturesToBounds) {
-                switch (ib) {
-                    case LOWER:
-                        bound = types.cvarUpperBound(bound);
-                        break;
-                    case UPPER:
-                        Type altBound = types.cvarLowerBound(bound);
-                        if (!altBound.hasTag(TypeTag.BOT)) bound = altBound;
-                        break;
-                }
-            }
             addBound(ib, bound, types, false);
         }