ARM: Implement memcpy using NEON.

test/cctest/test-disasm-arm.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 387 matching lines @@
             "e7df1f90       bfi r1, r0, #31, #1");
 
     COMPARE(usat(r0, 1, Operand(r1)),
             "e6e10011       usat r0, #1, r1");
     COMPARE(usat(r2, 7, Operand(lr)),
             "e6e7201e       usat r2, #7, lr");
     COMPARE(usat(r3, 31, Operand(r4, LSL, 31)),
             "e6ff3f94       usat r3, #31, r4, lsl #31");
     COMPARE(usat(r8, 0, Operand(r5, ASR, 17)),
             "e6e088d5       usat r8, #0, r5, asr #17");
+
+    COMPARE(pkhbt(r3, r4, Operand(r5, LSL, 17)),
+            "e6843895       pkhbt r3, r4, r5, lsl #17");
+    COMPARE(pkhtb(r3, r4, Operand(r5, ASR, 17)),
+            "e68438d5       pkhtb r3, r4, r5, asr #17");
+    COMPARE(uxtb(r3, Operand(r4, ROR, 8)),
+            "e6ef3474       uxtb r3, r4, ror #8");
+    COMPARE(uxtab(r3, r4, Operand(r5, ROR, 8)),
+            "e6e43475       uxtab r3, r4, r5, ror #8");
+    COMPARE(uxtb16(r3, Operand(r4, ROR, 8)),
+            "e6cf3474       uxtb16 r3, r4, ror #8");
   }
 
   VERIFY_RUN();
 }
 
 
 
 TEST(Vfp) {
   SET_UP();
 
@@ skipping 237 matching lines @@
               "eebd0be0       vcvt.s32.f64 s0, d16");
       COMPARE(vcvt_f64_u32(d16, s1),
               "eef80b60       vcvt.f64.u32 d16, s1");
     }
   }
 
   VERIFY_RUN();
 }
 
 
+TEST(Neon) {
+  SET_UP();
+
+  if (CpuFeatures::IsSupported(NEON)) {
+    CpuFeatureScope scope(&assm, NEON);
+      COMPARE(vld1(Neon8, NeonListOperand(d4, 4), NeonMemOperand(r1)),
+              "f421420f       vld1.8 {d4, d5, d6, d7}, [r1]");
+      COMPARE(vst1(Neon16, NeonListOperand(d17, 4), NeonMemOperand(r9)),
+              "f449124f       vst1.16 {d17, d18, d19, d20}, [r9]");
+      COMPARE(vmovl(NeonU8, q4, d2),
+              "f3884a12       vmovl.u8 q4, d2");
+  }
+
+  VERIFY_RUN();
+}
+
+
 TEST(LoadStore) {
   SET_UP();
 
   COMPARE(ldrb(r0, MemOperand(r1)),
           "e5d10000       ldrb r0, [r1, #+0]");
   COMPARE(ldrb(r2, MemOperand(r3, 42)),
           "e5d3202a       ldrb r2, [r3, #+42]");
   COMPARE(ldrb(r4, MemOperand(r5, -42)),
           "e555402a       ldrb r4, [r5, #-42]");
   COMPARE(ldrb(r6, MemOperand(r7, 42, PostIndex)),
@@ skipping 176 matching lines @@
     COMPARE(strd(r4, r5, MemOperand(r5, -127)),
             "e14547ff       strd r4, [r5, #-127]");
     COMPARE(strd(r6, r7, MemOperand(r7, 127, PostIndex)),
             "e0c767ff       strd r6, [r7], #+127");
     COMPARE(strd(r8, r9, MemOperand(r9, -127, PostIndex)),
             "e04987ff       strd r8, [r9], #-127");
     COMPARE(strd(r10, fp, MemOperand(fp, 127, PreIndex)),
             "e1eba7ff       strd r10, [fp, #+127]!");
     COMPARE(strd(ip, sp, MemOperand(sp, -127, PreIndex)),
             "e16dc7ff       strd ip, [sp, #-127]!");
+
+    COMPARE(pld(MemOperand(r1, 0)),
+            "f5d1f000       pld [r1]");
+    COMPARE(pld(MemOperand(r2, 128)),
+            "f5d2f080       pld [r2, #+128]");
   }
 
   VERIFY_RUN();
 }