Implements unboxed Mints on ARM.

runtime/vm/assembler_arm.cc

Index: runtime/vm/assembler_arm.cc
===================================================================
--- runtime/vm/assembler_arm.cc	(revision 34252)
+++ runtime/vm/assembler_arm.cc	(working copy)
@@ -1223,6 +1223,18 @@
 }
 
 
+void Assembler::vshlqi(OperandSize sz,
+                       QRegister qd, QRegister qm, QRegister qn) {
+  EmitSIMDqqq(B25 | B10, sz, qd, qn, qm);
+}
+
+
+void Assembler::vshlqu(OperandSize sz,
+                       QRegister qd, QRegister qm, QRegister qn) {
+  EmitSIMDqqq(B25 | B24 | B10, sz, qd, qn, qm);
+}
+
+
 void Assembler::veorq(QRegister qd, QRegister qn, QRegister qm) {
   EmitSIMDqqq(B24 | B8 | B4, kByte, qd, qn, qm);
 }
@@ -1243,6 +1255,11 @@
 }
 
 
+void Assembler::vmvnq(QRegister qd, QRegister qm) {
+  EmitSIMDqqq(B25 | B24 | B23 | B10 | B8 | B7, kWordPair, qd, Q0, qm);
+}
+
+
 void Assembler::vminqs(QRegister qd, QRegister qn, QRegister qm) {
   EmitSIMDqqq(B21 | B11 | B10 | B9 | B8, kSWord, qd, qn, qm);
 }