[turbofan] Initial version of number type feedback.

src/compiler/memory-optimizer.cc

Index: src/compiler/memory-optimizer.cc
diff --git a/src/compiler/memory-optimizer.cc b/src/compiler/memory-optimizer.cc
index 8c66347a6e1210494f0f8d372f4f468d211e4a92..20bc50df1f6c8a92ae23ab5f4184e56bb60d7a20 100644
--- a/src/compiler/memory-optimizer.cc
+++ b/src/compiler/memory-optimizer.cc
@@ -92,6 +92,10 @@ void MemoryOptimizer::VisitNode(Node* node, AllocationState const* state) {
     case IrOpcode::kIfException:
     case IrOpcode::kLoad:
     case IrOpcode::kStore:
+    case IrOpcode::kCheckedUint32ToInt32:

[Benedikt Meurer, 2016/05/30 18:39:50]

These nodes should be lowered long before we get here (in the effect/control
linearization), so they shouldn't be part of this switch.

[Jarin, 2016/05/31 20:28:53]

Done.

+    case IrOpcode::kCheckedFloat64ToInt32:
+    case IrOpcode::kCheckedTaggedToInt32:
+    case IrOpcode::kCheckedTaggedToFloat64:
       return VisitOtherEffect(node, state);
     default:
       break;