Fix disassembly output for background compilation; modify some tests to run long enough for backgro…

runtime/vm/compiler.cc

Index: runtime/vm/compiler.cc
diff --git a/runtime/vm/compiler.cc b/runtime/vm/compiler.cc
index 8ba747c317711a11fc3d1504068198630933b2ba..f3d879a8c90bf2a28d645b2b1974441517858ac5 100644
--- a/runtime/vm/compiler.cc
+++ b/runtime/vm/compiler.cc
@@ -1142,7 +1142,9 @@ static RawError* CompileFunctionHelper(CompilationPipeline* pipeline,
       DisassembleCode(function, optimized);
     } else if (FLAG_disassemble_optimized &&
                optimized &&
-               FlowGraphPrinter::ShouldPrint(function)) {
+               FlowGraphPrinter::ShouldPrint(function) &&
+               (result == NULL) /* no background compilation*/ ) {
+      // With background compilation, print when installing the code.
       // TODO(fschneider): Print unoptimized code along with the optimized code.
       THR_Print("*** BEGIN CODE\n");
       DisassembleCode(function, true);
@@ -1867,6 +1869,10 @@ void BackgroundCompiler::InstallGeneratedCode() {
     }
     if (result.IsValid()) {
       function.InstallOptimizedCode(result.result_code(), false /* not OSR */);
+      if (FLAG_trace_compiler) {
+        THR_Print("Installing optimized code for %s\n",
+            function.ToQualifiedCString());
+      }
       // Install leaf classes and fields dependencies.
       Class& cls = Class::Handle();
       for (intptr_t i = 0; i < result.leaf_classes().Length(); i++) {
@@ -1885,6 +1891,13 @@ void BackgroundCompiler::InstallGeneratedCode() {
       // Reset to 0 so that it can be recompiled if needed.
       function.set_usage_counter(0);
     }
+    if (result.IsValid() &&
+        FLAG_disassemble_optimized &&
+        FlowGraphPrinter::ShouldPrint(function)) {
+      THR_Print("*** BEGIN CODE\n");
+      DisassembleCode(function, true);
+      THR_Print("*** END CODE\n");
+    }
   }
 }