Fixup redefinitions before doing code motion

runtime/vm/precompiler.cc

Index: runtime/vm/precompiler.cc
diff --git a/runtime/vm/precompiler.cc b/runtime/vm/precompiler.cc
index f3b5822ec4a73c024e8f59ff59839252eff2df0a..970c8493901482da96663d64cb7d97a24693e419 100644
--- a/runtime/vm/precompiler.cc
+++ b/runtime/vm/precompiler.cc
@@ -3216,6 +3216,8 @@ bool PrecompileParsedFunctionHelper::Compile(CompilationPipeline* pipeline) {
           // it depends on the numbering of loads from the previous
           // load-elimination.
           if (FLAG_loop_invariant_code_motion) {
+            flow_graph->RenameUsesDominatedByRedefinitions();
+            DEBUG_ASSERT(flow_graph->VerifyRedefinitions());
             LICM licm(flow_graph);
             licm.Optimize();
             DEBUG_ASSERT(flow_graph->VerifyUseLists());