Add packed add and subtract to IA32 and X64 assemblers

runtime/vm/assembler_ia32_test.cc

 // Copyright (c) 2012, 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"
 #if defined(TARGET_ARCH_IA32)
 
 #include "vm/assembler.h"
 #include "vm/os.h"
 #include "vm/unit_test.h"
@@ skipping 856 matching lines @@
 }
 
 
 ASSEMBLER_TEST_RUN(PackedFPOperations, test) {
   typedef float (*PackedFPOperationsCode)();
   float res = reinterpret_cast<PackedFPOperationsCode>(test->entry())();
   EXPECT_FLOAT_EQ(14.7f, res, 0.001f);
 }
 
 
+ASSEMBLER_TEST_GENERATE(PackedIntOperations, assembler) {
+  __ movl(EAX, Immediate(0x2));
+  __ movd(XMM0, EAX);
+  __ shufps(XMM0, XMM0, Immediate(0x0));
+  __ movl(EAX, Immediate(0x1));
+  __ movd(XMM1, EAX);
+  __ shufps(XMM1, XMM1, Immediate(0x0));
+  __ addpl(XMM0, XMM1);  // 0x3
+  __ addpl(XMM0, XMM0);  // 0x6
+  __ subpl(XMM0, XMM1);  // 0x5
+  // Copy the low lane at ESP.
+  __ pushl(EAX);
+  __ movss(Address(ESP, 0), XMM0);
+  __ popl(EAX);
+  __ ret();
+}
+
+
+ASSEMBLER_TEST_RUN(PackedIntOperations, test) {
+  typedef uint32_t (*PackedIntOperationsCode)();
+  uint32_t res = reinterpret_cast<PackedIntOperationsCode>(test->entry())();
+  EXPECT_EQ(static_cast<uword>(0x5), res);
+}
+
+
 ASSEMBLER_TEST_GENERATE(PackedFPOperations2, assembler) {
   __ movl(EAX, Immediate(bit_cast<int32_t, float>(4.0f)));
   __ movd(XMM0, EAX);
   __ shufps(XMM0, XMM0, Immediate(0x0));
 
   __ movaps(XMM1, XMM0);  // Copy XMM0
   __ reciprocalps(XMM1);  // 0.25
   __ sqrtps(XMM1);  // 0.5
   __ rsqrtps(XMM0);  // ~0.5
   __ subps(XMM0, XMM1);  // ~0.0
@@ skipping 1941 matching lines @@
                      FieldAddress(ECX, GrowableObjectArray::data_offset()),
                      EAX);
   __ popl(EAX);
   __ popl(CTX);
   __ ret();
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_IA32