Fix a bug in Div when all uses are truncating

src/arm/lithium-codegen-arm.cc

Index: src/arm/lithium-codegen-arm.cc
diff --git a/src/arm/lithium-codegen-arm.cc b/src/arm/lithium-codegen-arm.cc
index 8d9efbf31eb2a9aa61a67935ccb75e1815165be8..6dae6db6be9459d82e310df1cb3a43a11b4128da 100644
--- a/src/arm/lithium-codegen-arm.cc
+++ b/src/arm/lithium-codegen-arm.cc
@@ -1398,6 +1398,7 @@ void LCodeGen::DoDivI(LDivI* instr) {
         __ rsb(dividend, dividend, Operand(0), LeaveCC, lt);
         __ mov(dividend, Operand(dividend, ASR, power));
         if (divisor > 0) __ rsb(dividend, dividend, Operand(0), LeaveCC, lt);
+        if (divisor < 0) __ rsb(dividend, dividend, Operand(0), LeaveCC, gt);
         return;  // Don't fall through to "__ rsb" below.
       } else {
         // Deoptimize if remainder is not 0.