--- old/src/cpu/x86/vm/assembler_x86.cpp	2016-04-22 17:27:55.078034500 -0700
+++ new/src/cpu/x86/vm/assembler_x86.cpp	2016-04-22 17:27:54.649010000 -0700
@@ -2323,6 +2323,15 @@
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
+// This instruction produces ZF or CF flags
+void Assembler::ktestql(KRegister src1, KRegister src2) {
+  assert(VM_Version::supports_avx512bw(), "");
+  InstructionAttr attributes(AVX_128bit, /* rex_w */ true, /* legacy_mode */ true, /* no_mask_reg */ true, /* uses_vl */ false);
+  int encode = vex_prefix_and_encode(src1->encoding(), 0, src2->encoding(), VEX_SIMD_NONE, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0x99);
+  emit_int8((unsigned char)(0xC0 | encode));
+}
+
 void Assembler::movb(Address dst, int imm8) {
   InstructionMark im(this);
    prefix(dst);
@@ -2491,6 +2500,20 @@
   emit_operand(src, dst);
 }
 
+void Assembler::evmovdqub(KRegister mask, bool zeroing, XMMRegister dst, Address src, int vector_len) {
+  assert(VM_Version::supports_avx512vlbw(), "");
+  assert(is_programmed_mask_reg(), "");
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FVM, /* input_size_in_bits */ EVEX_NObit);
+  attributes.set_embedded_opmask_register_specifier(mask);
+  if (zeroing) attributes.set_is_clear_context();
+  attributes.set_is_evex_instruction();
+  vex_prefix(src, 0, dst->encoding(), VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x6F);
+  emit_operand(dst, src);
+}
+
 void Assembler::evmovdquw(XMMRegister dst, XMMRegister src, int vector_len) {
   assert(VM_Version::supports_evex(), "");
   InstructionAttr attributes(vector_len, /* vex_w */ true, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ true, /* uses_vl */ true);
@@ -3275,6 +3298,23 @@
   emit_operand(as_Register(dst_enc), src);
 }
 
+void Assembler::evpcmpeqb(KRegister mask, bool zeroing, KRegister kdst, XMMRegister nds, Address src, int vector_len) {
+  bool no_reg_mask = (mask == NULL  && zeroing == false) ? true : false;
+  assert(VM_Version::supports_avx512vlbw(), "");
+  assert(is_programmed_mask_reg(), "");
+  InstructionMark im(this);
+  InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, no_reg_mask, /* uses_vl */ false);
+  attributes.set_address_attributes(/* tuple_type */ EVEX_FVM, /* input_size_in_bits */ EVEX_NObit);
+  if (!no_reg_mask) {
+    attributes.set_embedded_opmask_register_specifier(mask);
+    if (zeroing) attributes.set_is_clear_context();
+  }
+  attributes.set_is_evex_instruction();
+  vex_prefix(src, nds->encoding(), kdst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x74);
+  emit_operand(as_Register(kdst->encoding()), src);
+}
+
 // In this context, the dst vector contains the components that are equal, non equal components are zeroed in dst
 void Assembler::pcmpeqw(XMMRegister dst, XMMRegister src) {
   assert(VM_Version::supports_sse2(), "");