Robustification: Always assign an environment to LModI when a deopt is possible.

src/arm/lithium-arm.cc

Index: src/arm/lithium-arm.cc
diff --git a/src/arm/lithium-arm.cc b/src/arm/lithium-arm.cc
index df420639a6a7f9cbc29219da24b6fee35f7c1cc9..3e933b08681f9991ad9473f5180adc4331156433 100644
--- a/src/arm/lithium-arm.cc
+++ b/src/arm/lithium-arm.cc
@@ -1459,7 +1459,8 @@ LInstruction* LChunkBuilder::DoMod(HMod* instr) {
     }
 
     if (instr->CheckFlag(HValue::kBailoutOnMinusZero) ||
-        instr->CheckFlag(HValue::kCanBeDivByZero)) {
+        instr->CheckFlag(HValue::kCanBeDivByZero) ||
+        instr->CheckFlag(HValue::kCanOverflow)) {
       return AssignEnvironment(DefineAsRegister(mod));
     } else {
       return DefineAsRegister(mod);