Merge (x & y) == 0 pattern to emit a single test instruction.

runtime/vm/flow_graph_type_propagator.cc

Index: runtime/vm/flow_graph_type_propagator.cc
===================================================================
--- runtime/vm/flow_graph_type_propagator.cc	(revision 29901)
+++ runtime/vm/flow_graph_type_propagator.cc	(working copy)
@@ -809,28 +809,22 @@
 }
 
 
+CompileType TestSmiInstr::ComputeType() const {
+  return CompileType::Bool();
+}
+

[srdjan, 2013/11/05 18:30:34]

one more line

[Florian Schneider, 2013/11/06 12:13:42]

Done.

 CompileType EqualityCompareInstr::ComputeType() const {
   // Used for numeric comparisons only.
   return CompileType::Bool();
 }
 
 
-bool EqualityCompareInstr::RecomputeType() {
-  return UpdateType(ComputeType());
-}
-
-
 CompileType RelationalOpInstr::ComputeType() const {
   // Used for numeric comparisons only.
   return CompileType::Bool();
 }
 
 
-bool RelationalOpInstr::RecomputeType() {
-  return UpdateType(ComputeType());
-}
-
-
 CompileType CurrentContextInstr::ComputeType() const {
   return CompileType::FromCid(kContextCid);
 }