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 9ec80f819a062dbf3078fc4a0487b765177a19cb..d090f9203f66046ff8f4eecba405867802e3da87 100644
--- a/src/arm/lithium-codegen-arm.cc
+++ b/src/arm/lithium-codegen-arm.cc
@@ -1394,10 +1394,18 @@ void LCodeGen::DoDivI(LDivI* instr) {
     if (test_value != 0) {
       if (instr->hydrogen()->CheckFlag(
           HInstruction::kAllUsesTruncatingToInt32)) {
+        Label negative, done;
         __ cmp(dividend, Operand(0));
+        __ b(lt, &negative);
+        __ mov(dividend, Operand(dividend, ASR, power));
+        if (divisor < 0) __ rsb(dividend, dividend, Operand(0));
+        __ jmp(&done);
+
+        __ bind(&negative);
         __ 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));
+        __ bind(&done);
         return;  // Don't fall through to "__ rsb" below.
       } else {
         // Deoptimize if remainder is not 0.