Add Smi support to Shl

src/x64/lithium-x64.cc

Index: src/x64/lithium-x64.cc
diff --git a/src/x64/lithium-x64.cc b/src/x64/lithium-x64.cc
index d6f05c0a2df80bf90531fda2ed89aae021f9c442..094d2c60bd7c8c54f60a9011444150c7ab9bb074 100644
--- a/src/x64/lithium-x64.cc
+++ b/src/x64/lithium-x64.cc
@@ -717,9 +717,9 @@ LInstruction* LChunkBuilder::DoDeoptimize(HDeoptimize* instr) {
 
 LInstruction* LChunkBuilder::DoShift(Token::Value op,
                                      HBitwiseBinaryOperation* instr) {
-  if (instr->representation().IsSmiOrTagged()) {
-    ASSERT(instr->left()->representation().IsSmiOrTagged());
-    ASSERT(instr->right()->representation().IsSmiOrTagged());
+  if (instr->representation().IsTagged()) {
+    ASSERT(instr->left()->representation().IsTagged());
+    ASSERT(instr->right()->representation().IsTagged());
 
     LOperand* left = UseFixed(instr->left(), rdx);
     LOperand* right = UseFixed(instr->right(), rax);
@@ -727,9 +727,9 @@ LInstruction* LChunkBuilder::DoShift(Token::Value op,
     return MarkAsCall(DefineFixed(result, rax), instr);
   }
 
-  ASSERT(instr->representation().IsInteger32());
-  ASSERT(instr->left()->representation().IsInteger32());
-  ASSERT(instr->right()->representation().IsInteger32());
+  ASSERT(instr->representation().IsSmiOrInteger32());
+  ASSERT(instr->left()->representation().Equals(instr->representation()));
+  ASSERT(instr->right()->representation().Equals(instr->representation()));
   LOperand* left = UseRegisterAtStart(instr->left());
 
   HValue* right_value = instr->right();