Add (simple) side effects flags and equality methods on nodes.

This is in preparation of doing GVN and LICM.

Change-Id: I43050ff846755f9387a62b893d548ecdb54e7e95

1 files changed, 12 insertions, 0 deletions

diff --git a/compiler/optimizing/nodes.cc b/compiler/optimizing/nodes.cc
index f07029d6c2..207c605ddd 100644
--- a/compiler/optimizing/nodes.cc
+++ b/compiler/optimizing/nodes.cc
@@ -468,4 +468,16 @@ bool HCondition::NeedsMaterialization() const {
   return false;
 }
 
+bool HInstruction::Equals(HInstruction* other) const {
+  if (!InstructionTypeEquals(other)) return false;
+  if (!InstructionDataEquals(other)) return false;
+  if (GetType() != other->GetType()) return false;
+  if (InputCount() != other->InputCount()) return false;
+
+  for (size_t i = 0, e = InputCount(); i < e; ++i) {
+    if (InputAt(i) != other->InputAt(i)) return false;
+  }
+  return true;
+}
+
 }  // namespace art