Change comparison-to-branch fusion to actually remove comparison from the graph.

runtime/vm/il_printer.cc

Index: runtime/vm/il_printer.cc
diff --git a/runtime/vm/il_printer.cc b/runtime/vm/il_printer.cc
index 1d33db8258171a8f89bbdedee61b048de87bf10c..efe0648b0e2b033bd5f321b38d7c60886ca80cbc 100644
--- a/runtime/vm/il_printer.cc
+++ b/runtime/vm/il_printer.cc
@@ -403,13 +403,13 @@ void ReThrowInstr::PrintTo(BufferFormatter* f) const {
 void BranchInstr::PrintTo(BufferFormatter* f) const {
   f->Print("    %s ", DebugName());
   f->Print("if ");
-  value()->PrintTo(f);
   if (is_fused_with_comparison()) {
-    f->Print(" (fused)");
-  }
-  if (is_negated()) {
-    f->Print(" (negated)");
+    if (is_negated()) f->Print(" not ");
+    fused_with_comparison_->PrintTo(f);
+  } else {
+    value()->PrintTo(f);
   }
+
   f->Print(" goto (%d, %d)",
             true_successor()->block_id(),
             false_successor()->block_id());