MIPS: Skip some conditional deopts for Div/Mul when all uses are truncating.

src/mips/lithium-codegen-mips.cc

Index: src/mips/lithium-codegen-mips.cc
diff --git a/src/mips/lithium-codegen-mips.cc b/src/mips/lithium-codegen-mips.cc
index 1c8973fe7e2d1e08071df3b390f917cfff6b34fa..3c583e3897d21d9c4832bdac9c28e49da724569b 100644
--- a/src/mips/lithium-codegen-mips.cc
+++ b/src/mips/lithium-codegen-mips.cc
@@ -1246,8 +1246,10 @@ void LCodeGen::DoDivI(LDivI* instr) {
     __ bind(&left_not_min_int);
   }
 
-  __ mfhi(result);
-  DeoptimizeIf(ne, instr->environment(), result, Operand(zero_reg));
+  if (!instr->hydrogen()->CheckFlag(HInstruction::kAllUsesTruncatingToInt32)) {
+    __ mfhi(result);
+    DeoptimizeIf(ne, instr->environment(), result, Operand(zero_reg));
+  }
   __ mflo(result);
 }