vm: Generate 'and' instruction for Smi values.

runtime/vm/intrinsifier_arm64.cc

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"  // Needed here to get TARGET_ARCH_ARM64.
 #if defined(TARGET_ARCH_ARM64)
 
 #include "vm/intrinsifier.h"
 
 #include "vm/assembler.h"
@@ skipping 651 matching lines @@
   // XOR with sign bit to complement bits if value is negative.
   __ eor(R0, R0, Operand(R0, ASR, 63));
   __ clz(R0, R0);
   __ LoadImmediate(R1, 64);
   __ sub(R0, R1, Operand(R0));
   __ SmiTag(R0);
   __ ret();
 }
 
 
+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)
 
   // R2 = x_used, R3 = x_digits, x_used > 0, x_used is Smi.
   __ ldp(R2, R3, Address(SP, 2 * kWordSize, Address::PairOffset));
   __ add(R2, R2, Operand(2));  // x_used > 0, Smi. R2 = x_used + 1, round up.
   __ AsrImmediate(R2, R2, 2);  // R2 = num of digit pairs to read.
   // R4 = r_digits, R5 = n, n is Smi, n % _DIGIT_BITS != 0.
   __ ldp(R4, R5, Address(SP, 0 * kWordSize, Address::PairOffset));
@@ skipping 1528 matching lines @@
 
 void Intrinsifier::Profiler_getCurrentTag(Assembler* assembler) {
   __ LoadIsolate(R0);
   __ ldr(R0, Address(R0, Isolate::current_tag_offset()));
   __ ret();
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM64