ia32: Simplify inlined Smi code for SAR.

src/ia32/full-codegen-ia32.cc

Index: src/ia32/full-codegen-ia32.cc
diff --git a/src/ia32/full-codegen-ia32.cc b/src/ia32/full-codegen-ia32.cc
index 452cd08ee300b9809e303413cb39dccd8997573f..a6ec56b28b0a88ddff7f82a33ee98a1b5f88ee0a 100644
--- a/src/ia32/full-codegen-ia32.cc
+++ b/src/ia32/full-codegen-ia32.cc
@@ -2273,10 +2273,9 @@ void FullCodeGenerator::EmitInlineSmiBinaryOp(BinaryOperation* expr,
 
   switch (op) {
     case Token::SAR:
-      __ SmiUntag(eax);
       __ SmiUntag(ecx);
       __ sar_cl(eax);  // No checks of result necessary
-      __ SmiTag(eax);
+      __ and_(eax, Immediate(~kSmiTagMask));
       break;
     case Token::SHL: {
       Label result_ok;