Dead code elimination based on GVN results.

Change-Id: I5b77411a8f088f0b561da14b123cf6b0501c9db5

1 files changed, 8 insertions, 2 deletions

diff --git a/compiler/dex/local_value_numbering_test.cc b/compiler/dex/local_value_numbering_test.cc
index 9f18a3e622..ec1c39e0f9 100644
--- a/compiler/dex/local_value_numbering_test.cc
+++ b/compiler/dex/local_value_numbering_test.cc
@@ -185,9 +185,9 @@ class LocalValueNumberingTest : public testing::Test {
   }
 
   void PerformLVN() {
-    cu_.mir_graph->temp_.gvn.ifield_ids_ =  GlobalValueNumbering::PrepareGvnFieldIds(
+    cu_.mir_graph->temp_.gvn.ifield_ids =  GlobalValueNumbering::PrepareGvnFieldIds(
         allocator_.get(), cu_.mir_graph->ifield_lowering_infos_);
-    cu_.mir_graph->temp_.gvn.sfield_ids_ =  GlobalValueNumbering::PrepareGvnFieldIds(
+    cu_.mir_graph->temp_.gvn.sfield_ids =  GlobalValueNumbering::PrepareGvnFieldIds(
         allocator_.get(), cu_.mir_graph->sfield_lowering_infos_);
     gvn_.reset(new (allocator_.get()) GlobalValueNumbering(&cu_, allocator_.get(),
                                                            GlobalValueNumbering::kModeLvn));
@@ -211,8 +211,14 @@ class LocalValueNumberingTest : public testing::Test {
         value_names_() {
     cu_.mir_graph.reset(new MIRGraph(&cu_, &cu_.arena));
     allocator_.reset(ScopedArenaAllocator::Create(&cu_.arena_stack));
+    // By default, the zero-initialized reg_location_[.] with ref == false tells LVN that
+    // 0 constants are integral, not references. Nothing else is used by LVN/GVN.
+    cu_.mir_graph->reg_location_ = static_cast<RegLocation*>(cu_.arena.Alloc(
+        kMaxSsaRegs * sizeof(cu_.mir_graph->reg_location_[0]), kArenaAllocRegAlloc));
   }
 
+  static constexpr size_t kMaxSsaRegs = 16384u;
+
   ArenaPool pool_;
   CompilationUnit cu_;
   size_t mir_count_;