vm: Generate 'and' instruction for Smi values.

runtime/vm/intrinsifier_mips.cc

Index: runtime/vm/intrinsifier_mips.cc
diff --git a/runtime/vm/intrinsifier_mips.cc b/runtime/vm/intrinsifier_mips.cc
index 2c13390fb329f9110aec9dd3380fcdc61af561c3..0a8fdc5c9fefdf161f7a9980c63ba49a787b7e0e 100644
--- a/runtime/vm/intrinsifier_mips.cc
+++ b/runtime/vm/intrinsifier_mips.cc
@@ -767,6 +767,11 @@ void Intrinsifier::Smi_bitLength(Assembler* assembler) {
 }
 
 
+void Intrinsifier::Smi_bitAndFromSmi(Assembler* assembler) {
+  Integer_bitAndFromInteger(assembler);
+}
+
+
 void Intrinsifier::Bigint_lsh(Assembler* assembler) {
   // static void _lsh(Uint32List x_digits, int x_used, int n,
   //                  Uint32List r_digits)