Allow uint32 value on optimized frames if they are consumed by safe operations.

src/hydrogen-instructions.cc

Index: src/hydrogen-instructions.cc
diff --git a/src/hydrogen-instructions.cc b/src/hydrogen-instructions.cc
index 67ee5bd3868c900f2eb94c87844657e85b7ccbc1..e989cc682309926c41248c477c70ce173e9fe42f 100644
--- a/src/hydrogen-instructions.cc
+++ b/src/hydrogen-instructions.cc
@@ -875,12 +875,14 @@ HValue* HBitwise::Canonicalize() {
   int32_t nop_constant = (op() == Token::BIT_AND) ? -1 : 0;
   if (left()->IsConstant() &&
       HConstant::cast(left())->HasInteger32Value() &&
-      HConstant::cast(left())->Integer32Value() == nop_constant) {
+      HConstant::cast(left())->Integer32Value() == nop_constant &&
+      !right()->CheckFlag(kUint32)) {
     return right();
   }
   if (right()->IsConstant() &&
       HConstant::cast(right())->HasInteger32Value() &&
-      HConstant::cast(right())->Integer32Value() == nop_constant) {
+      HConstant::cast(right())->Integer32Value() == nop_constant &&
+      !left()->CheckFlag(kUint32)) {
     return left();
   }
   return this;
@@ -892,7 +894,9 @@ HValue* HBitNot::Canonicalize() {
   if (value()->IsBitNot()) {
     HValue* result = HBitNot::cast(value())->value();
     ASSERT(result->representation().IsInteger32());
-    return result;
+    if (!result->CheckFlag(kUint32)) {
+      return result;
+    }
   }
   return this;
 }