Revert "Emit constants using ASTs"

sdk/lib/_internal/compiler/implementation/ssa/codegen.dart

Index: sdk/lib/_internal/compiler/implementation/ssa/codegen.dart
diff --git a/sdk/lib/_internal/compiler/implementation/ssa/codegen.dart b/sdk/lib/_internal/compiler/implementation/ssa/codegen.dart
index b397568913861727b4e025a242f7565cd9c8f769..7e364c094b0b6bf319dfd1934609c1a740583e22 100644
--- a/sdk/lib/_internal/compiler/implementation/ssa/codegen.dart
+++ b/sdk/lib/_internal/compiler/implementation/ssa/codegen.dart
@@ -1812,11 +1812,44 @@ abstract class SsaCodeGenerator implements HVisitor, HBlockInformationVisitor {
   }
 
   void generateConstant(Constant constant) {
-    if (constant.isFunction()) {
-      FunctionConstant function = constant;
-      world.registerStaticUse(function.element);
+    Namer namer = backend.namer;
+    // TODO(floitsch): should we use the ConstantVisitor here?
+    if (!constant.isObject()) {
+      if (constant.isBool()) {
+        BoolConstant boolConstant = constant;
+        push(newLiteralBool(boolConstant.value));
+      } else if (constant.isNum()) {
+        // TODO(floitsch): get rid of the code buffer.
+        CodeBuffer buffer = new CodeBuffer();
+        backend.emitter.writeConstantToBuffer(constant, buffer);
+        push(new js.LiteralNumber(buffer.toString()));
+      } else if (constant.isNull()) {
+        push(new js.LiteralNull());
+      } else if (constant.isString()) {
+        // TODO(floitsch): get rid of the code buffer.
+        CodeBuffer buffer = new CodeBuffer();
+        backend.emitter.writeConstantToBuffer(constant, buffer);
+        push(new js.LiteralString(buffer.toString()));
+      } else if (constant.isFunction()) {
+        FunctionConstant function = constant;
+        world.registerStaticUse(function.element);
+        push(new js.VariableUse(namer.isolateAccess(function.element)));
+      } else if (constant.isSentinel()) {
+        // TODO(floitsch): get rid of the code buffer.
+        CodeBuffer buffer = new CodeBuffer();
+        backend.emitter.writeConstantToBuffer(constant, buffer);
+        push(new js.VariableUse(buffer.toString()));
+      } else {
+        compiler.internalError(
+            "The compiler does not know how generate code for "
+            "constant $constant");
+      }
+    } else {
+      String name = namer.constantName(constant);
+      js.VariableUse currentIsolateUse =
+          new js.VariableUse(backend.namer.CURRENT_ISOLATE);
+      push(new js.PropertyAccess.field(currentIsolateUse, name));
     }
-    push(backend.emitter.constantReference(constant));
   }
 
   visitConstant(HConstant node) {