diff -r 6347ffe2c3c7 -r ff399127078a src/hotspot/cpu/x86/assembler_x86.cpp
--- a/src/hotspot/cpu/x86/assembler_x86.cpp	Tue Mar 05 16:39:18 2019 +0100
+++ b/src/hotspot/cpu/x86/assembler_x86.cpp	Thu Mar 07 15:27:42 2019 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -7765,9 +7765,43 @@
   }
 }
 
+void Assembler::vmaxss(XMMRegister dst, XMMRegister nds, XMMRegister src) {
+  assert(VM_Version::supports_avx(), "");
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  int encode = vex_prefix_and_encode(dst->encoding(), nds->encoding(), src->encoding(), VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x5F);
+  emit_int8((unsigned char)(0xC0 | encode));
+}
+
+void Assembler::vmaxsd(XMMRegister dst, XMMRegister nds, XMMRegister src) {
+  assert(VM_Version::supports_avx(), "");
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  attributes.set_rex_vex_w_reverted();
+  int encode = vex_prefix_and_encode(dst->encoding(), nds->encoding(), src->encoding(), VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x5F);
+  emit_int8((unsigned char)(0xC0 | encode));
+}
+
+void Assembler::vminss(XMMRegister dst, XMMRegister nds, XMMRegister src) {
+  assert(VM_Version::supports_avx(), "");
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  int encode = vex_prefix_and_encode(dst->encoding(), nds->encoding(), src->encoding(), VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x5D);
+  emit_int8((unsigned char)(0xC0 | encode));
+}
+
+void Assembler::vminsd(XMMRegister dst, XMMRegister nds, XMMRegister src) {
+  assert(VM_Version::supports_avx(), "");
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  attributes.set_rex_vex_w_reverted();
+  int encode = vex_prefix_and_encode(dst->encoding(), nds->encoding(), src->encoding(), VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
+  emit_int8(0x5D);
+  emit_int8((unsigned char)(0xC0 | encode));
+}
+
 void Assembler::cmppd(XMMRegister dst, XMMRegister nds, XMMRegister src, int cop, int vector_len) {
   assert(VM_Version::supports_avx(), "");
-  assert(!VM_Version::supports_evex(), "");
+  assert(vector_len <= AVX_256bit, "");
   InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ true, /* uses_vl */ true);
   int encode = simd_prefix_and_encode(dst, nds, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8((unsigned char)0xC2);
@@ -7777,7 +7811,7 @@
 
 void Assembler::blendvpd(XMMRegister dst, XMMRegister nds, XMMRegister src1, XMMRegister src2, int vector_len) {
   assert(VM_Version::supports_avx(), "");
-  assert(!VM_Version::supports_evex(), "");
+  assert(vector_len <= AVX_256bit, "");
   InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ true, /* uses_vl */ true);
   int encode = vex_prefix_and_encode(dst->encoding(), nds->encoding(), src1->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_3A, &attributes);
   emit_int8((unsigned char)0x4B);
@@ -7788,7 +7822,7 @@
 
 void Assembler::cmpps(XMMRegister dst, XMMRegister nds, XMMRegister src, int cop, int vector_len) {
   assert(VM_Version::supports_avx(), "");
-  assert(!VM_Version::supports_evex(), "");
+  assert(vector_len <= AVX_256bit, "");
   InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ true, /* uses_vl */ true);
   int encode = simd_prefix_and_encode(dst, nds, src, VEX_SIMD_NONE, VEX_OPCODE_0F, &attributes);
   emit_int8((unsigned char)0xC2);
@@ -7798,7 +7832,7 @@
 
 void Assembler::blendvps(XMMRegister dst, XMMRegister nds, XMMRegister src1, XMMRegister src2, int vector_len) {
   assert(VM_Version::supports_avx(), "");
-  assert(!VM_Version::supports_evex(), "");
+  assert(vector_len <= AVX_256bit, "");
   InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ true, /* uses_vl */ true);
   int encode = vex_prefix_and_encode(dst->encoding(), nds->encoding(), src1->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_3A, &attributes);
   emit_int8((unsigned char)0x4A);