Smi-support for HSar.

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 f54e84b050a0aca2ea954235a5d891db82cbd04f..b01140028c3c9928632b4e167799de66ecd951b8 100644
--- a/src/arm/lithium-arm.cc
+++ b/src/arm/lithium-arm.cc
@@ -733,7 +733,9 @@ LInstruction* LChunkBuilder::DoShift(Token::Value op,
     constant_value = constant->Integer32Value() & 0x1f;
     // Left shifts can deoptimize if we shift by > 0 and the result cannot be
     // truncated to smi.
-    if (instr->representation().IsSmi() && constant_value > 0) {
+    if (instr->representation().IsSmi() &&
+        op == Token::SHL &&
+        constant_value > 0) {
       for (HUseIterator it(instr->uses()); !it.Done(); it.Advance()) {
         if (!it.value()->CheckFlag(HValue::kTruncatingToSmi)) {
           does_deopt = true;
@@ -752,7 +754,8 @@ LInstruction* LChunkBuilder::DoShift(Token::Value op,
       does_deopt = !instr->CheckFlag(HInstruction::kUint32);
     } else {
       for (HUseIterator it(instr->uses()); !it.Done(); it.Advance()) {
-        if (!it.value()->CheckFlag(HValue::kTruncatingToInt32)) {
+        if (!it.value()->CheckFlag(HValue::kTruncatingToInt32) &&
+            !it.value()->CheckFlag(HValue::kTruncatingToSmi)) {
           does_deopt = true;
           break;
         }