Temporarily disable uint32 mode for comparisons

BUG=v8:3380
LOG=n
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/323103002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21750 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/hydrogen-uint32-analysis.cc

@@ -62,6 +62,7 @@ bool HUint32AnalysisPhase::IsSafeUint32Use(HValue* val, HValue* use) {
       }
     }
   } else if (use->IsCompareNumericAndBranch()) {
+    return false;  // TODO(svenpanne/3380): Fix and re-enable!
     HCompareNumericAndBranch* c = HCompareNumericAndBranch::cast(use);
     return IsUint32Operation(c->left()) && IsUint32Operation(c->right());
   }