Change TypeInference to handle super calls as direct invocations.

pkg/compiler/lib/src/ssa/codegen.dart

Index: pkg/compiler/lib/src/ssa/codegen.dart
diff --git a/pkg/compiler/lib/src/ssa/codegen.dart b/pkg/compiler/lib/src/ssa/codegen.dart
index e677afdb4cb834933083c2f7a5b7aad5195631f7..beaa2ccdda4816093c2763730ec1fcf787bdff68 100644
--- a/pkg/compiler/lib/src/ssa/codegen.dart
+++ b/pkg/compiler/lib/src/ssa/codegen.dart
@@ -1676,7 +1676,6 @@ class SsaCodeGenerator implements HVisitor, HBlockInformationVisitor {
 
   void registerMethodInvoke(HInvokeDynamic node) {
     Selector selector = node.selector;
-    TypeMask mask = getOptimizedSelectorFor(node, selector, node.mask);
 
     // If we don't know what we're calling or if we are calling a getter,
     // we need to register that fact that we may be calling a closure
@@ -1689,19 +1688,35 @@ class SsaCodeGenerator implements HVisitor, HBlockInformationVisitor {
       Selector call = new Selector.callClosureFrom(selector);
       registry.registerDynamicUse(new DynamicUse(call, null));
     }
-    registry.registerDynamicUse(new DynamicUse(selector, mask));
+    if (target != null) {
+      assert(invariant(node, selector.applies(target),
+          message: '$selector does not apply to $target'));
+      registry.registerStaticUse(
+          new StaticUse.directInvoke(target, selector.callStructure));

[Siggi Cherem (dart-lang), 2016/10/17 19:55:36]

I'm guessing this is a nSM? Maybe document it as such?

[Johnni Winther, 2016/10/18 07:46:27]

No. This is a dynamic invocation which we have found to have a single target but
for some reason haven't inlined. We are _still_ accessing the target dynamically
but we don't need to enqueue more than target for this to work. 

Add this as a comment.

+    } else {
+      TypeMask mask = getOptimizedSelectorFor(node, selector, node.mask);
+      registry.registerDynamicUse(new DynamicUse(selector, mask));
+    }
   }
 
   void registerSetter(HInvokeDynamic node) {
-    Selector selector = node.selector;
-    TypeMask mask = getOptimizedSelectorFor(node, selector, node.mask);
-    registry.registerDynamicUse(new DynamicUse(selector, mask));
+    if (node.element != null) {

[Siggi Cherem (dart-lang), 2016/10/17 19:55:36]

same here and below?

[Johnni Winther, 2016/10/18 07:46:27]

Added comment.

+      registry.registerStaticUse(new StaticUse.directSet(node.element));
+    } else {
+      Selector selector = node.selector;
+      TypeMask mask = getOptimizedSelectorFor(node, selector, node.mask);
+      registry.registerDynamicUse(new DynamicUse(selector, mask));
+    }
   }
 
   void registerGetter(HInvokeDynamic node) {
-    Selector selector = node.selector;
-    TypeMask mask = getOptimizedSelectorFor(node, selector, node.mask);
-    registry.registerDynamicUse(new DynamicUse(selector, mask));
+    if (node.element != null) {
+      registry.registerStaticUse(new StaticUse.directGet(node.element));
+    } else {
+      Selector selector = node.selector;
+      TypeMask mask = getOptimizedSelectorFor(node, selector, node.mask);
+      registry.registerDynamicUse(new DynamicUse(selector, mask));
+    }
   }
 
   visitInvokeDynamicSetter(HInvokeDynamicSetter node) {