Fixed and improved code for integral division. Fixed and extended tests.

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 8eb5eb7a042b3f1de4e428f9812e2f6c30acc232..fdf4ddfd804026dbdc38dad0ff78ab06f6b9bdc8 100644
--- a/src/arm/lithium-arm.cc
+++ b/src/arm/lithium-arm.cc
@@ -1236,7 +1236,7 @@ LInstruction* LChunkBuilder::DoDiv(HDiv* instr) {
     ASSERT(instr->right()->representation().Equals(instr->representation()));
     if (instr->RightIsPowerOf2()) {
       ASSERT(!instr->CheckFlag(HValue::kCanBeDivByZero));
-      LOperand* value = UseRegisterAtStart(instr->left());
+      LOperand* value = UseRegister(instr->left());
       LDivI* div = new(zone()) LDivI(value, UseConstant(instr->right()), NULL);
       return AssignEnvironment(DefineAsRegister(div));
     }