Added (dis-)assembler support for movmskps on ia32 and x64.

src/x64/disasm-x64.cc

Index: src/x64/disasm-x64.cc
diff --git a/src/x64/disasm-x64.cc b/src/x64/disasm-x64.cc
index c8606c40b2a1758a2e4cf0706321456ffb0a81fb..b919ea687cc82329acd71dd8aba9569dbaccd5ca 100644
--- a/src/x64/disasm-x64.cc
+++ b/src/x64/disasm-x64.cc
@@ -1244,6 +1244,13 @@ int DisassemblerX64::TwoByteOpcodeInstruction(byte* data) {
     AppendToBuffer("xorps %s, ", NameOfXMMRegister(regop));
     current += PrintRightXMMOperand(current);
 
+  } else if (opcode == 0x50) {
+    // movmskps reg, xmm
+    int mod, regop, rm;
+    get_modrm(*current, &mod, &regop, &rm);
+    AppendToBuffer("movmskps %s, ", NameOfCPURegister(regop));
+    current += PrintRightXMMOperand(current);
+
   } else if ((opcode & 0xF0) == 0x80) {
     // Jcc: Conditional jump (branch).
     current = data + JumpConditional(data);