Disable special handling of flooring division by constant until it is fixed for real.

src/x64/lithium-x64.cc

Index: src/x64/lithium-x64.cc
diff --git a/src/x64/lithium-x64.cc b/src/x64/lithium-x64.cc
index beb0f2b3a6a723eec53fa64353ac1d2e9a6ffff7..111941b0405d2d822e2505cca9d08f4ff15910f4 100644
--- a/src/x64/lithium-x64.cc
+++ b/src/x64/lithium-x64.cc
@@ -1363,8 +1363,8 @@ LInstruction* LChunkBuilder::DoFlooringDivByConstI(HMathFloorOfDiv* instr) {
 LInstruction* LChunkBuilder::DoMathFloorOfDiv(HMathFloorOfDiv* instr) {
   if (instr->RightIsPowerOf2()) {
     return DoFlooringDivByPowerOf2I(instr);
-  } else if (instr->right()->IsConstant()) {
-    return DoFlooringDivByConstI(instr);
+  } else if (false && instr->right()->IsConstant()) {
+    return DoFlooringDivByConstI(instr);  // TODO(svenpanne) Fix and re-enable.
   } else {
     return DoDivI(instr);
   }