VM: Array bounds checks that don't deoptimize for precompiled code.

runtime/vm/precompiler.cc

Index: runtime/vm/precompiler.cc
diff --git a/runtime/vm/precompiler.cc b/runtime/vm/precompiler.cc
index 13c4595e5535617f29b3711ded14422758982ca5..1eaf79a917eb729e8daaee09eb3844eb244f92e1 100644
--- a/runtime/vm/precompiler.cc
+++ b/runtime/vm/precompiler.cc
@@ -2674,6 +2674,9 @@ bool PrecompileParsedFunctionHelper::Compile(CompilationPipeline* pipeline) {
           sinking->DetachMaterializations();
         }
 
+        // Replace bounds check instruction with a generic one.
+        optimizer.ReplaceArrayBoundChecks();
+
         // Compute and store graph informations (call & instruction counts)
         // to be later used by the inliner.
         FlowGraphInliner::CollectGraphInfo(flow_graph, true);