Dead code elimination based on GVN results.

Change-Id: I5b77411a8f088f0b561da14b123cf6b0501c9db5

1 files changed, 9 insertions, 0 deletions

diff --git a/compiler/dex/mir_graph.cc b/compiler/dex/mir_graph.cc
index 9f985890b1..08ca1b288c 100644
--- a/compiler/dex/mir_graph.cc
+++ b/compiler/dex/mir_graph.cc
@@ -2559,4 +2559,13 @@ const uint16_t* MIRGraph::GetInsns(int m_unit_index) const {
   return m_units_[m_unit_index]->GetCodeItem()->insns_;
 }
 
+void MIRGraph::SetPuntToInterpreter(bool val) {
+  punt_to_interpreter_ = val;
+  if (val) {
+    // Disable all subsequent optimizations. They may not be safe to run. (For example,
+    // LVN/GVN assumes there are no conflicts found by the type inference pass.)
+    cu_->disable_opt = ~static_cast<decltype(cu_->disable_opt)>(0);
+  }
+}
+
 }  // namespace art