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

src/mips/lithium-mips.cc

Index: src/mips/lithium-mips.cc
diff --git a/src/mips/lithium-mips.cc b/src/mips/lithium-mips.cc
index e7b93d532ead6cea793bec9ac1e08f46583472c8..7142bc1423ab86b01681ab8b358f380b720195bf 100644
--- a/src/mips/lithium-mips.cc
+++ b/src/mips/lithium-mips.cc
@@ -1377,7 +1377,8 @@ 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);