[x64] Implement movdqu in the disassembler

I also added a test for movdqa, which was already implemented.

R=bmeurer@chromium.org

Change-Id: I6dd5cba072f1439dcdfb5f975de116e4534c7581
Reviewed-on: https://chromium-review.googlesource.com/832466Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50175}

src/x64/disasm-x64.cc

@@ -2014,11 +2014,22 @@ int DisassemblerX64::TwoByteOpcodeInstruction(byte* data) {
       current += PrintRightXMMOperand(current);
       AppendToBuffer(", %d", (*current) & 7);
       current += 1;
+    } else if (opcode == 0x6F) {
+      int mod, regop, rm;
+      get_modrm(*current, &mod, &regop, &rm);
+      AppendToBuffer("movdqu %s,", NameOfXMMRegister(regop));
+      current += PrintRightXMMOperand(current);
     } else if (opcode == 0x7E) {
       int mod, regop, rm;
       get_modrm(*current, &mod, &regop, &rm);
       AppendToBuffer("movq %s,", NameOfXMMRegister(regop));
       current += PrintRightXMMOperand(current);
+    } else if (opcode == 0x7F) {
+      int mod, regop, rm;
+      get_modrm(*current, &mod, &regop, &rm);
+      AppendToBuffer("movdqu ");
+      current += PrintRightXMMOperand(current);
+      AppendToBuffer(",%s", NameOfXMMRegister(regop));
     } else if ((opcode & 0xF8) == 0x58 || opcode == 0x51) {
       // XMM arithmetic. Mnemonic was retrieved at the start of this function.
       int mod, regop, rm;

test/cctest/test-disasm-x64.cc

@@ -386,6 +386,10 @@ TEST(DisasmX64) {
     __ cvtsd2ss(xmm0, xmm1);
     __ cvtsd2ss(xmm0, Operand(rbx, rcx, times_4, 10000));
     __ movaps(xmm0, xmm1);
+    __ movdqa(xmm0, Operand(rsp, 12));
+    __ movdqa(Operand(rsp, 12), xmm0);
+    __ movdqu(xmm0, Operand(rsp, 12));
+    __ movdqu(Operand(rsp, 12), xmm0);
     __ shufps(xmm0, xmm9, 0x0);
 
     // logic operation