Option to output precompiled instructions as a blob for use with mmap instead of assembly for use i…

runtime/vm/benchmark_test.cc

Index: runtime/vm/benchmark_test.cc
diff --git a/runtime/vm/benchmark_test.cc b/runtime/vm/benchmark_test.cc
index 77503755923c405e43ff81c631d834bcbbffa2c9..d4fb6515a0ae2f29d83bb6a0a502169ea3e85661 100644
--- a/runtime/vm/benchmark_test.cc
+++ b/runtime/vm/benchmark_test.cc
@@ -526,8 +526,8 @@ BENCHMARK_SIZE(CoreSnapshotSize) {
   // Write snapshot with object content.
   FullSnapshotWriter writer(&vm_isolate_snapshot_buffer,
                             &isolate_snapshot_buffer,
-                            NULL, /* instructions_snapshot_buffer */
                             &malloc_allocator,
+                            NULL, /* instructions_writer */
                             false, /* snapshot_code */
                             true /* vm_isolate_is_symbolic */);
   writer.WriteFullSnapshot();
@@ -563,8 +563,8 @@ BENCHMARK_SIZE(StandaloneSnapshotSize) {
   // Write snapshot with object content.
   FullSnapshotWriter writer(&vm_isolate_snapshot_buffer,
                             &isolate_snapshot_buffer,
-                            NULL, /* instructions_snapshot_buffer */
                             &malloc_allocator,
+                            NULL, /* instructions_writer */
                             false, /* snapshot_code */
                             true /* vm_isolate_is_symbolic */);
   writer.WriteFullSnapshot();