Remove ActAsNullConstant

We now properly type null constants during ssa builder so this is not
needed anymore.

Bug: 20322006
Change-Id: Ic060a52d4fa2d4f00755dd6427f822d368392d7b

1 files changed, 0 insertions, 9 deletions

diff --git a/compiler/optimizing/nodes.h b/compiler/optimizing/nodes.h
index 1a24cb516b..4923b3c1ff 100644
--- a/compiler/optimizing/nodes.h
+++ b/compiler/optimizing/nodes.h
@@ -1154,8 +1154,6 @@ class HInstruction : public ArenaObject<kArenaAllocMisc> {
   virtual bool CanThrow() const { return false; }
   bool HasSideEffects() const { return side_effects_.HasSideEffects(); }
 
-  virtual bool ActAsNullConstant() const { return false; }
-
   // Does not apply for all instructions, but having this at top level greatly
   // simplifies the null check elimination.
   virtual bool CanBeNull() const {
@@ -2080,8 +2078,6 @@ class HNullConstant : public HConstant {
 
   size_t ComputeHashCode() const OVERRIDE { return 0; }
 
-  bool ActAsNullConstant() const OVERRIDE { return true; }
-
   DECLARE_INSTRUCTION(NullConstant);
 
  private:
@@ -2103,11 +2099,6 @@ class HIntConstant : public HConstant {
 
   size_t ComputeHashCode() const OVERRIDE { return GetValue(); }
 
-  // TODO: Null is represented by the `0` constant. In most cases we replace it
-  // with a HNullConstant but we don't do it when comparing (a != null). This
-  // method is an workaround until we fix the above.
-  bool ActAsNullConstant() const OVERRIDE { return value_ == 0; }
-
   bool IsMinusOne() const OVERRIDE { return GetValue() == -1; }
   bool IsZero() const OVERRIDE { return GetValue() == 0; }
   bool IsOne() const OVERRIDE { return GetValue() == 1; }