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src/cpu/x86/vm/assembler_x86.cpp

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@@ -1238,20 +1238,22 @@
 }
 
 void Assembler::addsd(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  attributes.set_rex_vex_w_reverted();
   int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
   emit_int8(0x58);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::addsd(XMMRegister dst, Address src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionMark im(this);
   InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
   attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_64bit);
+  attributes.set_rex_vex_w_reverted();
   simd_prefix(dst, dst, src, VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
   emit_int8(0x58);
   emit_operand(dst, src);
 }
 

@@ -1597,18 +1599,20 @@
   // 0x66 is there. Strangly ucomisd comes out correct
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionMark im(this);
   InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);;
   attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_64bit);
+  attributes.set_rex_vex_w_reverted();
   simd_prefix(dst, xnoreg, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x2F);
   emit_operand(dst, src);
 }
 
 void Assembler::comisd(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  attributes.set_rex_vex_w_reverted();
   int encode = simd_prefix_and_encode(dst, xnoreg, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x2F);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 

@@ -1731,20 +1735,22 @@
 }
 
 void Assembler::cvtsd2ss(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  attributes.set_rex_vex_w_reverted();
   int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
   emit_int8(0x5A);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::cvtsd2ss(XMMRegister dst, Address src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionMark im(this);
   InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
   attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_64bit);
+  attributes.set_rex_vex_w_reverted();
   simd_prefix(dst, dst, src, VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
   emit_int8(0x5A);
   emit_operand(dst, src);
 }
 

@@ -1838,18 +1844,20 @@
 void Assembler::divsd(XMMRegister dst, Address src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionMark im(this);
   InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
   attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_64bit);
+  attributes.set_rex_vex_w_reverted();
   simd_prefix(dst, dst, src, VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
   emit_int8(0x5E);
   emit_operand(dst, src);
 }
 
 void Assembler::divsd(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  attributes.set_rex_vex_w_reverted();
   int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
   emit_int8(0x5E);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 

@@ -2120,10 +2128,11 @@
 
 void Assembler::movapd(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   int vector_len = VM_Version::supports_avx512novl() ? AVX_512bit : AVX_128bit;
   InstructionAttr attributes(vector_len, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  attributes.set_rex_vex_w_reverted();
   int encode = simd_prefix_and_encode(dst, xnoreg, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x28);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 

@@ -2154,10 +2163,11 @@
 
 void Assembler::movddup(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse3(), ""));
   int vector_len = VM_Version::supports_avx512novl() ? AVX_512bit : AVX_128bit;
   InstructionAttr attributes(vector_len, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_rex_vex_w_reverted();
   int encode = simd_prefix_and_encode(dst, xnoreg, src, VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
   emit_int8(0x12);
   emit_int8(0xC0 | encode);
 }
 

@@ -2191,10 +2201,19 @@
   int encode = vex_prefix_and_encode(dst->encoding(), 0, src->encoding(), VEX_SIMD_NONE, VEX_OPCODE_0F, &attributes);
   emit_int8((unsigned char)0x93);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
+void Assembler::kmovwl(KRegister dst, Address src) {
+  assert(VM_Version::supports_evex(), "");
+  InstructionMark im(this);
+  InstructionAttr attributes(AVX_128bit, /* vex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ true, /* uses_vl */ false);
+  vex_prefix(src, 0, dst->encoding(), VEX_SIMD_NONE, VEX_OPCODE_0F, &attributes);
+  emit_int8((unsigned char)0x90);
+  emit_operand((Register)dst, src);
+}
+
 void Assembler::kmovdl(KRegister dst, Register src) {
   assert(VM_Version::supports_avx512bw(), "");
   InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ true, /* uses_vl */ false);
   int encode = vex_prefix_and_encode(dst->encoding(), 0, src->encoding(), VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
   emit_int8((unsigned char)0x92);

@@ -2421,10 +2440,11 @@
 
 // Move Unaligned EVEX enabled Vector (programmable : 8,16,32,64)
 void Assembler::evmovdqub(XMMRegister dst, XMMRegister src, int vector_len) {
   assert(VM_Version::supports_evex(), "");
   InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ true, /* uses_vl */ true);
+  attributes.set_is_evex_instruction();
   int prefix = (_legacy_mode_bw) ? VEX_SIMD_F2 : VEX_SIMD_F3;
   int encode = vex_prefix_and_encode(dst->encoding(), 0, src->encoding(), (Assembler::VexSimdPrefix)prefix, VEX_OPCODE_0F, &attributes);
   emit_int8(0x6F);
   emit_int8((unsigned char)(0xC0 | encode));
 }

@@ -2433,10 +2453,11 @@
   assert(VM_Version::supports_evex(), "");
   InstructionMark im(this);
   InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ true, /* uses_vl */ true);
   int prefix = (_legacy_mode_bw) ? VEX_SIMD_F2 : VEX_SIMD_F3;
   attributes.set_address_attributes(/* tuple_type */ EVEX_FVM, /* input_size_in_bits */ EVEX_NObit);
+  attributes.set_is_evex_instruction();
   vex_prefix(src, 0, dst->encoding(), (Assembler::VexSimdPrefix)prefix, VEX_OPCODE_0F, &attributes);
   emit_int8(0x6F);
   emit_operand(dst, src);
 }
 

@@ -2445,18 +2466,20 @@
   assert(src != xnoreg, "sanity");
   InstructionMark im(this);
   InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ true, /* uses_vl */ true);
   int prefix = (_legacy_mode_bw) ? VEX_SIMD_F2 : VEX_SIMD_F3;
   attributes.set_address_attributes(/* tuple_type */ EVEX_FVM, /* input_size_in_bits */ EVEX_NObit);
+  attributes.set_is_evex_instruction();
   vex_prefix(dst, 0, src->encoding(), (Assembler::VexSimdPrefix)prefix, VEX_OPCODE_0F, &attributes);
   emit_int8(0x7F);
   emit_operand(src, dst);
 }
 
 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);
+  attributes.set_is_evex_instruction();
   int prefix = (_legacy_mode_bw) ? VEX_SIMD_F2 : VEX_SIMD_F3;
   int encode = vex_prefix_and_encode(dst->encoding(), 0, src->encoding(), (Assembler::VexSimdPrefix)prefix, VEX_OPCODE_0F, &attributes);
   emit_int8(0x6F);
   emit_int8((unsigned char)(0xC0 | encode));
 }

@@ -2464,10 +2487,11 @@
 void Assembler::evmovdquw(XMMRegister dst, Address src, int vector_len) {
   assert(VM_Version::supports_evex(), "");
   InstructionMark im(this);
   InstructionAttr attributes(vector_len, /* vex_w */ true, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ true, /* uses_vl */ true);
   attributes.set_address_attributes(/* tuple_type */ EVEX_FVM, /* input_size_in_bits */ EVEX_NObit);
+  attributes.set_is_evex_instruction();
   int prefix = (_legacy_mode_bw) ? VEX_SIMD_F2 : VEX_SIMD_F3;
   vex_prefix(src, 0, dst->encoding(), (Assembler::VexSimdPrefix)prefix, VEX_OPCODE_0F, &attributes);
   emit_int8(0x6F);
   emit_operand(dst, src);
 }

@@ -2476,10 +2500,11 @@
   assert(VM_Version::supports_evex(), "");
   assert(src != xnoreg, "sanity");
   InstructionMark im(this);
   InstructionAttr attributes(vector_len, /* vex_w */ true, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ true, /* uses_vl */ true);
   attributes.set_address_attributes(/* tuple_type */ EVEX_FVM, /* input_size_in_bits */ EVEX_NObit);
+  attributes.set_is_evex_instruction();
   int prefix = (_legacy_mode_bw) ? VEX_SIMD_F2 : VEX_SIMD_F3;
   vex_prefix(dst, 0, src->encoding(), (Assembler::VexSimdPrefix)prefix, VEX_OPCODE_0F, &attributes);
   emit_int8(0x7F);
   emit_operand(src, dst);
 }

@@ -2507,12 +2532,12 @@
 void Assembler::evmovdqul(Address dst, XMMRegister src, int vector_len) {
   assert(VM_Version::supports_evex(), "");
   assert(src != xnoreg, "sanity");
   InstructionMark im(this);
   InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
-  attributes.set_is_evex_instruction();
   attributes.set_address_attributes(/* tuple_type */ EVEX_FVM, /* input_size_in_bits */ EVEX_NObit);
+  attributes.set_is_evex_instruction();
   vex_prefix(dst, 0, src->encoding(), VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
   emit_int8(0x7F);
   emit_operand(src, dst);
 }
 

@@ -2527,24 +2552,24 @@
 
 void Assembler::evmovdquq(XMMRegister dst, Address src, int vector_len) {
   assert(VM_Version::supports_evex(), "");
   InstructionMark im(this);
   InstructionAttr attributes(vector_len, /* vex_w */ true, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
-  attributes.set_is_evex_instruction();
   attributes.set_address_attributes(/* tuple_type */ EVEX_FVM, /* input_size_in_bits */ EVEX_NObit);
+  attributes.set_is_evex_instruction();
   vex_prefix(src, 0, dst->encoding(), VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
   emit_int8(0x6F);
   emit_operand(dst, src);
 }
 
 void Assembler::evmovdquq(Address dst, XMMRegister src, int vector_len) {
   assert(VM_Version::supports_evex(), "");
   assert(src != xnoreg, "sanity");
   InstructionMark im(this);
   InstructionAttr attributes(vector_len, /* vex_w */ true, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
-  attributes.set_is_evex_instruction();
   attributes.set_address_attributes(/* tuple_type */ EVEX_FVM, /* input_size_in_bits */ EVEX_NObit);
+  attributes.set_is_evex_instruction();
   vex_prefix(dst, 0, src->encoding(), VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
   emit_int8(0x7F);
   emit_operand(src, dst);
 }
 

@@ -2590,10 +2615,11 @@
 void Assembler::movlpd(XMMRegister dst, Address src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionMark im(this);
   InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
   attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_32bit);
+  attributes.set_rex_vex_w_reverted();
   simd_prefix(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x12);
   emit_operand(dst, src);
 }
 

@@ -2620,20 +2646,22 @@
 void Assembler::movq(XMMRegister dst, Address src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionMark im(this);
   InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
   attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_64bit);
+  attributes.set_rex_vex_w_reverted();
   simd_prefix(dst, xnoreg, src, VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
   emit_int8(0x7E);
   emit_operand(dst, src);
 }
 
 void Assembler::movq(Address dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionMark im(this);
   InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
   attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_64bit);
+  attributes.set_rex_vex_w_reverted();
   simd_prefix(src, xnoreg, dst, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8((unsigned char)0xD6);
   emit_operand(src, dst);
 }
 

@@ -2654,30 +2682,33 @@
 }
 
 void Assembler::movsd(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  attributes.set_rex_vex_w_reverted();
   int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
   emit_int8(0x10);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::movsd(XMMRegister dst, Address src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionMark im(this);
   InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
   attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_64bit);
+  attributes.set_rex_vex_w_reverted();
   simd_prefix(dst, xnoreg, src, VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
   emit_int8(0x10);
   emit_operand(dst, src);
 }
 
 void Assembler::movsd(Address dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionMark im(this);
   InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
   attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_64bit);
+  attributes.set_rex_vex_w_reverted();
   simd_prefix(src, xnoreg, dst, VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
   emit_int8(0x11);
   emit_operand(src, dst);
 }
 

@@ -2797,18 +2828,20 @@
 void Assembler::mulsd(XMMRegister dst, Address src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionMark im(this);
   InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
   attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_64bit);
+  attributes.set_rex_vex_w_reverted();
   simd_prefix(dst, dst, src, VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
   emit_int8(0x59);
   emit_operand(dst, src);
 }
 
 void Assembler::mulsd(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  attributes.set_rex_vex_w_reverted();
   int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
   emit_int8(0x59);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 

@@ -3784,10 +3817,11 @@
 }
 
 void Assembler::punpcklqdq(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_rex_vex_w_reverted();
   int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x6C);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 

@@ -4079,20 +4113,22 @@
 }
 
 void Assembler::sqrtsd(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  attributes.set_rex_vex_w_reverted();
   int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
   emit_int8(0x51);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::sqrtsd(XMMRegister dst, Address src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionMark im(this);
   InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
   attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_64bit);
+  attributes.set_rex_vex_w_reverted();
   simd_prefix(dst, dst, src, VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
   emit_int8(0x51);
   emit_operand(dst, src);
 }
 

@@ -4164,20 +4200,22 @@
 }
 
 void Assembler::subsd(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  attributes.set_rex_vex_w_reverted();
   int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
   emit_int8(0x5C);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::subsd(XMMRegister dst, Address src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionMark im(this);
   InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
   attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_64bit);
+  attributes.set_rex_vex_w_reverted();
   simd_prefix(dst, dst, src, VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
   emit_int8(0x5C);
   emit_operand(dst, src);
 }
 

@@ -4261,18 +4299,20 @@
 void Assembler::ucomisd(XMMRegister dst, Address src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionMark im(this);
   InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
   attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_64bit);
+  attributes.set_rex_vex_w_reverted();
   simd_prefix(dst, xnoreg, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x2E);
   emit_operand(dst, src);
 }
 
 void Assembler::ucomisd(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ true, /* uses_vl */ false);
+  attributes.set_rex_vex_w_reverted();
   int encode = simd_prefix_and_encode(dst, xnoreg, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x2E);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 

@@ -4380,18 +4420,20 @@
 void Assembler::vaddsd(XMMRegister dst, XMMRegister nds, Address src) {
   assert(VM_Version::supports_avx(), "");
   InstructionMark im(this);
   InstructionAttr attributes(AVX_128bit, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
   attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_64bit);
+  attributes.set_rex_vex_w_reverted();
   vex_prefix(src, nds->encoding(), dst->encoding(), VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
   emit_int8(0x58);
   emit_operand(dst, src);
 }
 
 void Assembler::vaddsd(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 */ false, /* 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(0x58);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 

@@ -4416,18 +4458,20 @@
 void Assembler::vdivsd(XMMRegister dst, XMMRegister nds, Address src) {
   assert(VM_Version::supports_avx(), "");
   InstructionMark im(this);
   InstructionAttr attributes(AVX_128bit, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
   attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_64bit);
+  attributes.set_rex_vex_w_reverted();
   vex_prefix(src, nds->encoding(), dst->encoding(), VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
   emit_int8(0x5E);
   emit_operand(dst, src);
 }
 
 void Assembler::vdivsd(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 */ false, /* 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(0x5E);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 

@@ -4452,18 +4496,20 @@
 void Assembler::vmulsd(XMMRegister dst, XMMRegister nds, Address src) {
   assert(VM_Version::supports_avx(), "");
   InstructionMark im(this);
   InstructionAttr attributes(AVX_128bit, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
   attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_64bit);
+  attributes.set_rex_vex_w_reverted();
   vex_prefix(src, nds->encoding(), dst->encoding(), VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
   emit_int8(0x59);
   emit_operand(dst, src);
 }
 
 void Assembler::vmulsd(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 */ false, /* 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(0x59);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 

@@ -4488,18 +4534,20 @@
 void Assembler::vsubsd(XMMRegister dst, XMMRegister nds, Address src) {
   assert(VM_Version::supports_avx(), "");
   InstructionMark im(this);
   InstructionAttr attributes(AVX_128bit, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
   attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_64bit);
+  attributes.set_rex_vex_w_reverted();
   vex_prefix(src, nds->encoding(), dst->encoding(), VEX_SIMD_F2, VEX_OPCODE_0F, &attributes);
   emit_int8(0x5C);
   emit_operand(dst, src);
 }
 
 void Assembler::vsubsd(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 */ false, /* 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(0x5C);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 

@@ -4526,19 +4574,21 @@
 // Float-point vector arithmetic
 
 void Assembler::addpd(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_rex_vex_w_reverted();
   int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x58);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::addpd(XMMRegister dst, Address src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionMark im(this);
   InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_rex_vex_w_reverted();
   attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_64bit);
   simd_prefix(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x58);
   emit_operand(dst, src);
 }

@@ -4553,10 +4603,11 @@
 }
 
 void Assembler::vaddpd(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
   assert(VM_Version::supports_avx(), "");
   InstructionAttr attributes(vector_len, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_rex_vex_w_reverted();
   int encode = vex_prefix_and_encode(dst->encoding(), nds->encoding(), src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x58);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 

@@ -4571,10 +4622,11 @@
 void Assembler::vaddpd(XMMRegister dst, XMMRegister nds, Address src, int vector_len) {
   assert(VM_Version::supports_avx(), "");
   InstructionMark im(this);
   InstructionAttr attributes(vector_len, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
   attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_64bit);
+  attributes.set_rex_vex_w_reverted();
   vex_prefix(src, nds->encoding(), dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x58);
   emit_operand(dst, src);
 }
 

@@ -4589,10 +4641,11 @@
 }
 
 void Assembler::subpd(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_rex_vex_w_reverted();
   int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x5C);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 

@@ -4605,10 +4658,11 @@
 }
 
 void Assembler::vsubpd(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
   assert(VM_Version::supports_avx(), "");
   InstructionAttr attributes(vector_len, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_rex_vex_w_reverted();
   int encode = vex_prefix_and_encode(dst->encoding(), nds->encoding(), src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x5C);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 

@@ -4623,10 +4677,11 @@
 void Assembler::vsubpd(XMMRegister dst, XMMRegister nds, Address src, int vector_len) {
   assert(VM_Version::supports_avx(), "");
   InstructionMark im(this);
   InstructionAttr attributes(vector_len, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
   attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_64bit);
+  attributes.set_rex_vex_w_reverted();
   vex_prefix(src, nds->encoding(), dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x5C);
   emit_operand(dst, src);
 }
 

@@ -4641,20 +4696,22 @@
 }
 
 void Assembler::mulpd(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_rex_vex_w_reverted();
   int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x59);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::mulpd(XMMRegister dst, Address src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionMark im(this);
   InstructionAttr attributes(AVX_128bit, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
   attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_64bit);
+  attributes.set_rex_vex_w_reverted();
   simd_prefix(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x59);
   emit_operand(dst, src);
 }
 

@@ -4667,10 +4724,11 @@
 }
 
 void Assembler::vmulpd(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
   assert(VM_Version::supports_avx(), "");
   InstructionAttr attributes(vector_len, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_rex_vex_w_reverted();
   int encode = vex_prefix_and_encode(dst->encoding(), nds->encoding(), src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x59);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 

@@ -4685,10 +4743,11 @@
 void Assembler::vmulpd(XMMRegister dst, XMMRegister nds, Address src, int vector_len) {
   assert(VM_Version::supports_avx(), "");
   InstructionMark im(this);
   InstructionAttr attributes(vector_len, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
   attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_64bit);
+  attributes.set_rex_vex_w_reverted();
   vex_prefix(src, nds->encoding(), dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x59);
   emit_operand(dst, src);
 }
 

@@ -4703,10 +4762,11 @@
 }
 
 void Assembler::divpd(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_rex_vex_w_reverted();
   int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x5E);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 

@@ -4719,10 +4779,11 @@
 }
 
 void Assembler::vdivpd(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
   assert(VM_Version::supports_avx(), "");
   InstructionAttr attributes(vector_len, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_rex_vex_w_reverted();
   int encode = vex_prefix_and_encode(dst->encoding(), nds->encoding(), src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x5E);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 

@@ -4737,10 +4798,11 @@
 void Assembler::vdivpd(XMMRegister dst, XMMRegister nds, Address src, int vector_len) {
   assert(VM_Version::supports_avx(), "");
   InstructionMark im(this);
   InstructionAttr attributes(vector_len, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
   attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_64bit);
+  attributes.set_rex_vex_w_reverted();
   vex_prefix(src, nds->encoding(), dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x5E);
   emit_operand(dst, src);
 }
 

@@ -4755,28 +4817,31 @@
 }
 
 void Assembler::vsqrtpd(XMMRegister dst, XMMRegister src, int vector_len) {
   assert(VM_Version::supports_avx(), "");
   InstructionAttr attributes(vector_len, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_rex_vex_w_reverted();
   int encode = vex_prefix_and_encode(dst->encoding(), 0, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x51);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vsqrtpd(XMMRegister dst, Address src, int vector_len) {
   assert(VM_Version::supports_avx(), "");
   InstructionMark im(this);
   InstructionAttr attributes(vector_len, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
   attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_64bit);
+  attributes.set_rex_vex_w_reverted();
   vex_prefix(src, 0, dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x51);
   emit_operand(dst, src);
 }
 
 void Assembler::andpd(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionAttr attributes(AVX_128bit, /* rex_w */ !_legacy_mode_dq, /* legacy_mode */ _legacy_mode_dq, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_rex_vex_w_reverted();
   int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x54);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 

@@ -4801,18 +4866,20 @@
 void Assembler::andpd(XMMRegister dst, Address src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionMark im(this);
   InstructionAttr attributes(AVX_128bit, /* rex_w */ !_legacy_mode_dq, /* legacy_mode */ _legacy_mode_dq, /* no_mask_reg */ false, /* uses_vl */ true);
   attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_64bit);
+  attributes.set_rex_vex_w_reverted();
   simd_prefix(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x54);
   emit_operand(dst, src);
 }
 
 void Assembler::vandpd(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
   assert(VM_Version::supports_avx(), "");
   InstructionAttr attributes(vector_len, /* vex_w */ !_legacy_mode_dq, /* legacy_mode */ _legacy_mode_dq, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_rex_vex_w_reverted();
   int encode = vex_prefix_and_encode(dst->encoding(), nds->encoding(), src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x54);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 

@@ -4827,10 +4894,11 @@
 void Assembler::vandpd(XMMRegister dst, XMMRegister nds, Address src, int vector_len) {
   assert(VM_Version::supports_avx(), "");
   InstructionMark im(this);
   InstructionAttr attributes(vector_len, /* vex_w */ !_legacy_mode_dq, /* legacy_mode */ _legacy_mode_dq, /* no_mask_reg */ false, /* uses_vl */ true);
   attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_64bit);
+  attributes.set_rex_vex_w_reverted();
   vex_prefix(src, nds->encoding(), dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x54);
   emit_operand(dst, src);
 }
 

@@ -4845,26 +4913,29 @@
 }
 
 void Assembler::unpckhpd(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_rex_vex_w_reverted();
   int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x15);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::unpcklpd(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_rex_vex_w_reverted();
   int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x14);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::xorpd(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionAttr attributes(AVX_128bit, /* rex_w */ !_legacy_mode_dq, /* legacy_mode */ _legacy_mode_dq, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_rex_vex_w_reverted();
   int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x57);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 

@@ -4879,10 +4950,11 @@
 void Assembler::xorpd(XMMRegister dst, Address src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionMark im(this);
   InstructionAttr attributes(AVX_128bit, /* rex_w */ !_legacy_mode_dq, /* legacy_mode */ _legacy_mode_dq, /* no_mask_reg */ false, /* uses_vl */ true);
   attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_64bit);
+  attributes.set_rex_vex_w_reverted();
   simd_prefix(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x57);
   emit_operand(dst, src);
 }
 

@@ -4897,10 +4969,11 @@
 }
 
 void Assembler::vxorpd(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
   assert(VM_Version::supports_avx(), "");
   InstructionAttr attributes(vector_len, /* vex_w */ !_legacy_mode_dq, /* legacy_mode */ _legacy_mode_dq, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_rex_vex_w_reverted();
   int encode = vex_prefix_and_encode(dst->encoding(), nds->encoding(), src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x57);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 

@@ -4915,10 +4988,11 @@
 void Assembler::vxorpd(XMMRegister dst, XMMRegister nds, Address src, int vector_len) {
   assert(VM_Version::supports_avx(), "");
   InstructionMark im(this);
   InstructionAttr attributes(vector_len, /* vex_w */ !_legacy_mode_dq, /* legacy_mode */ _legacy_mode_dq, /* no_mask_reg */ false, /* uses_vl */ true);
   attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_64bit);
+  attributes.set_rex_vex_w_reverted();
   vex_prefix(src, nds->encoding(), dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x57);
   emit_operand(dst, src);
 }
 

@@ -4985,10 +5059,11 @@
 }
 
 void Assembler::paddq(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_rex_vex_w_reverted();
   int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8((unsigned char)0xD4);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 

@@ -5033,10 +5108,11 @@
 }
 
 void Assembler::vpaddq(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
   assert(UseAVX > 0, "requires some form of AVX");
   InstructionAttr attributes(vector_len, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_rex_vex_w_reverted();
   int encode = vex_prefix_and_encode(dst->encoding(), nds->encoding(), src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8((unsigned char)0xD4);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 

@@ -5073,10 +5149,11 @@
 void Assembler::vpaddq(XMMRegister dst, XMMRegister nds, Address src, int vector_len) {
   assert(UseAVX > 0, "requires some form of AVX");
   InstructionMark im(this);
   InstructionAttr attributes(vector_len, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
   attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_64bit);
+  attributes.set_rex_vex_w_reverted();
   vex_prefix(src, nds->encoding(), dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8((unsigned char)0xD4);
   emit_operand(dst, src);
 }
 

@@ -5104,10 +5181,11 @@
 }
 
 void Assembler::psubq(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_rex_vex_w_reverted();
   int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8((unsigned char)0xFB);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 

@@ -5136,10 +5214,11 @@
 }
 
 void Assembler::vpsubq(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
   assert(UseAVX > 0, "requires some form of AVX");
   InstructionAttr attributes(vector_len, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_rex_vex_w_reverted();
   int encode = vex_prefix_and_encode(dst->encoding(), nds->encoding(), src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8((unsigned char)0xFB);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 

@@ -5176,10 +5255,11 @@
 void Assembler::vpsubq(XMMRegister dst, XMMRegister nds, Address src, int vector_len) {
   assert(UseAVX > 0, "requires some form of AVX");
   InstructionMark im(this);
   InstructionAttr attributes(vector_len, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
   attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_64bit);
+  attributes.set_rex_vex_w_reverted();
   vex_prefix(src, nds->encoding(), dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8((unsigned char)0xFB);
   emit_operand(dst, src);
 }
 

@@ -5214,12 +5294,13 @@
   emit_int8(0x40);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::vpmullq(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
-  assert(UseAVX > 2, "requires some form of AVX");
-  InstructionAttr attributes(vector_len, /* rex_w */ true, /* legacy_mode */ _legacy_mode_dq, /* no_mask_reg */ false, /* uses_vl */ true);
+  assert(UseAVX > 2, "requires some form of EVEX");
+  InstructionAttr attributes(vector_len, /* vex_w */ true, /* legacy_mode */ _legacy_mode_dq, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_is_evex_instruction();
   int encode = vex_prefix_and_encode(dst->encoding(), nds->encoding(), src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8(0x40);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 

@@ -5242,14 +5323,15 @@
   emit_int8(0x40);
   emit_operand(dst, src);
 }
 
 void Assembler::vpmullq(XMMRegister dst, XMMRegister nds, Address src, int vector_len) {
-  assert(UseAVX > 0, "requires some form of AVX");
+  assert(UseAVX > 2, "requires some form of EVEX");
   InstructionMark im(this);
   InstructionAttr attributes(vector_len, /* vex_w */ true, /* legacy_mode */ _legacy_mode_dq, /* no_mask_reg */ false, /* uses_vl */ true);
   attributes.set_address_attributes(/* tuple_type */ EVEX_FV, /* input_size_in_bits */ EVEX_64bit);
+  attributes.set_is_evex_instruction();
   vex_prefix(src, nds->encoding(), dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8(0x40);
   emit_operand(dst, src);
 }
 

@@ -5301,10 +5383,11 @@
 }
 
 void Assembler::psllq(XMMRegister dst, XMMRegister shift) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_rex_vex_w_reverted();
   int encode = simd_prefix_and_encode(dst, dst, shift, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8((unsigned char)0xF3);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 

@@ -5330,10 +5413,11 @@
 }
 
 void Assembler::vpsllq(XMMRegister dst, XMMRegister src, int shift, int vector_len) {
   assert(UseAVX > 0, "requires some form of AVX");
   InstructionAttr attributes(vector_len, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_rex_vex_w_reverted();
   // XMM6 is for /6 encoding: 66 0F 73 /6 ib
   int encode = vex_prefix_and_encode(xmm6->encoding(), dst->encoding(), src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x73);
   emit_int8((unsigned char)(0xC0 | encode));
   emit_int8(shift & 0xFF);

@@ -5356,10 +5440,11 @@
 }
 
 void Assembler::vpsllq(XMMRegister dst, XMMRegister src, XMMRegister shift, int vector_len) {
   assert(UseAVX > 0, "requires some form of AVX");
   InstructionAttr attributes(vector_len, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_rex_vex_w_reverted();
   int encode = vex_prefix_and_encode(dst->encoding(), src->encoding(), shift->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8((unsigned char)0xF3);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 

@@ -5387,10 +5472,11 @@
 void Assembler::psrlq(XMMRegister dst, int shift) {
   // Do not confuse it with psrldq SSE2 instruction which
   // shifts 128 bit value in xmm register by number of bytes.
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_rex_vex_w_reverted();
   // XMM2 is for /2 encoding: 66 0F 73 /2 ib
   int encode = simd_prefix_and_encode(xmm2, dst, dst, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x73);
   emit_int8((unsigned char)(0xC0 | encode));
   emit_int8(shift & 0xFF);

@@ -5413,10 +5499,11 @@
 }
 
 void Assembler::psrlq(XMMRegister dst, XMMRegister shift) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionAttr attributes(AVX_128bit, /* rex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_rex_vex_w_reverted();
   int encode = simd_prefix_and_encode(dst, dst, shift, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8((unsigned char)0xD3);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 

@@ -5441,10 +5528,11 @@
 }
 
 void Assembler::vpsrlq(XMMRegister dst, XMMRegister src, int shift, int vector_len) {
   assert(UseAVX > 0, "requires some form of AVX");
   InstructionAttr attributes(vector_len, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_rex_vex_w_reverted();
   // XMM2 is for /2 encoding: 66 0F 73 /2 ib
   int encode = vex_prefix_and_encode(xmm2->encoding(), dst->encoding(), src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8(0x73);
   emit_int8((unsigned char)(0xC0 | encode));
   emit_int8(shift & 0xFF);

@@ -5467,10 +5555,11 @@
 }
 
 void Assembler::vpsrlq(XMMRegister dst, XMMRegister src, XMMRegister shift, int vector_len) {
   assert(UseAVX > 0, "requires some form of AVX");
   InstructionAttr attributes(vector_len, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_rex_vex_w_reverted();
   int encode = vex_prefix_and_encode(dst->encoding(), src->encoding(), shift->encoding(), VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8((unsigned char)0xD3);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 

@@ -5576,10 +5665,11 @@
 }
 
 void Assembler::pandn(XMMRegister dst, XMMRegister src) {
   NOT_LP64(assert(VM_Version::supports_sse2(), ""));
   InstructionAttr attributes(AVX_128bit, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_rex_vex_w_reverted();
   int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F, &attributes);
   emit_int8((unsigned char)0xDF);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 

@@ -5865,13 +5955,13 @@
   // 0x03 - extract from bits 511:384
   emit_int8(imm8 & 0x03);
 }
 
 void Assembler::vextracti64x2(XMMRegister dst, XMMRegister src, uint8_t imm8) {
-  assert(VM_Version::supports_evex(), "");
+  assert(VM_Version::supports_avx512dq(), "");
   assert(imm8 <= 0x03, "imm8: %u", imm8);
-  InstructionAttr attributes(AVX_512bit, /* vex_w */ !_legacy_mode_dq, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  InstructionAttr attributes(AVX_512bit, /* vex_w */ true, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
   int encode = vex_prefix_and_encode(src->encoding(), 0, dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_3A, &attributes);
   emit_int8(0x39);
   emit_int8((unsigned char)(0xC0 | encode));
   // 0x00 - extract from bits 127:0
   // 0x01 - extract from bits 255:128

@@ -5955,13 +6045,13 @@
   // 0x03 - extract from bits 511:384
   emit_int8(imm8 & 0x03);
 }
 
 void Assembler::vextractf64x2(XMMRegister dst, XMMRegister src, uint8_t imm8) {
-  assert(VM_Version::supports_evex(), "");
+  assert(VM_Version::supports_avx512dq(), "");
   assert(imm8 <= 0x03, "imm8: %u", imm8);
-  InstructionAttr attributes(AVX_512bit, /* vex_w */ !_legacy_mode_dq, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
+  InstructionAttr attributes(AVX_512bit, /* vex_w */ true, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ false);
   int encode = vex_prefix_and_encode(src->encoding(), 0, dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_3A, &attributes);
   emit_int8(0x19);
   emit_int8((unsigned char)(0xC0 | encode));
   // 0x00 - extract from bits 127:0
   // 0x01 - extract from bits 255:128

@@ -6082,21 +6172,23 @@
 }
 
 // duplicate 8-byte integer data from src into programmed locations in dest : requires AVX512VL
 void Assembler::evpbroadcastq(XMMRegister dst, XMMRegister src, int vector_len) {
   assert(VM_Version::supports_evex(), "");
-  InstructionAttr attributes(vector_len, /* vex_w */ true, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  InstructionAttr attributes(vector_len, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_rex_vex_w_reverted();
   int encode = vex_prefix_and_encode(dst->encoding(), 0, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8(0x59);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::evpbroadcastq(XMMRegister dst, Address src, int vector_len) {
   assert(VM_Version::supports_evex(), "");
   assert(dst != xnoreg, "sanity");
   InstructionMark im(this);
-  InstructionAttr attributes(vector_len, /* vex_w */ true, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  InstructionAttr attributes(vector_len, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_rex_vex_w_reverted();
   attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_64bit);
   // swap src<->dst for encoding
   vex_prefix(src, 0, dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8(0x59);
   emit_operand(dst, src);

@@ -6127,22 +6219,24 @@
 }
 
 // duplicate double precision data from src into programmed locations in dest : requires AVX512VL
 void Assembler::evpbroadcastsd(XMMRegister dst, XMMRegister src, int vector_len) {
   assert(VM_Version::supports_evex(), "");
-  InstructionAttr attributes(vector_len, /* vex_w */ true, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  InstructionAttr attributes(vector_len, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_rex_vex_w_reverted();
   int encode = vex_prefix_and_encode(dst->encoding(), 0, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8(0x19);
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 void Assembler::evpbroadcastsd(XMMRegister dst, Address src, int vector_len) {
   assert(VM_Version::supports_evex(), "");
   assert(dst != xnoreg, "sanity");
   InstructionMark im(this);
-  InstructionAttr attributes(vector_len, /* vex_w */ true, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  InstructionAttr attributes(vector_len, /* vex_w */ VM_Version::supports_evex(), /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
   attributes.set_address_attributes(/* tuple_type */ EVEX_T1S, /* input_size_in_bits */ EVEX_64bit);
+  attributes.set_rex_vex_w_reverted();
   // swap src<->dst for encoding
   vex_prefix(src, 0, dst->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
   emit_int8(0x19);
   emit_operand(dst, src);
 }

@@ -6152,55 +6246,43 @@
 
 // duplicate 1-byte integer data from src into programmed locations in dest : requires AVX512BW and AVX512VL
 void Assembler::evpbroadcastb(XMMRegister dst, Register src, int vector_len) {
   assert(VM_Version::supports_evex(), "");
   InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ true, /* uses_vl */ true);
+  attributes.set_is_evex_instruction();
   int encode = vex_prefix_and_encode(dst->encoding(), 0, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
-  if (attributes.is_evex_instruction()) {
     emit_int8(0x7A);
-  } else {
-    emit_int8(0x78);
-  }
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 // duplicate 2-byte integer data from src into programmed locations in dest : requires AVX512BW and AVX512VL
 void Assembler::evpbroadcastw(XMMRegister dst, Register src, int vector_len) {
   assert(VM_Version::supports_evex(), "");
   InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ _legacy_mode_bw, /* no_mask_reg */ true, /* uses_vl */ true);
+  attributes.set_is_evex_instruction();
   int encode = vex_prefix_and_encode(dst->encoding(), 0, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
-  if (attributes.is_evex_instruction()) {
     emit_int8(0x7B);
-  } else {
-    emit_int8(0x79);
-  }
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 // duplicate 4-byte integer data from src into programmed locations in dest : requires AVX512VL
 void Assembler::evpbroadcastd(XMMRegister dst, Register src, int vector_len) {
   assert(VM_Version::supports_evex(), "");
   InstructionAttr attributes(vector_len, /* vex_w */ false, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_is_evex_instruction();
   int encode = vex_prefix_and_encode(dst->encoding(), 0, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
-  if (attributes.is_evex_instruction()) {
     emit_int8(0x7C);
-  } else {
-    emit_int8(0x58);
-  }
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 // duplicate 8-byte integer data from src into programmed locations in dest : requires AVX512VL
 void Assembler::evpbroadcastq(XMMRegister dst, Register src, int vector_len) {
   assert(VM_Version::supports_evex(), "");
   InstructionAttr attributes(vector_len, /* vex_w */ true, /* legacy_mode */ false, /* no_mask_reg */ false, /* uses_vl */ true);
+  attributes.set_is_evex_instruction();
   int encode = vex_prefix_and_encode(dst->encoding(), 0, src->encoding(), VEX_SIMD_66, VEX_OPCODE_0F_38, &attributes);
-  if (attributes.is_evex_instruction()) {
     emit_int8(0x7C);
-  } else {
-    emit_int8(0x59);
-  }
   emit_int8((unsigned char)(0xC0 | encode));
 }
 
 
 // Carry-Less Multiplication Quadword

@@ -6851,10 +6933,13 @@
     bool evex_r = (xreg_enc >= 16);
     bool evex_v = (nds_enc >= 16);
     attributes->set_is_evex_instruction();
     evex_prefix(vex_r, vex_b, vex_x, evex_r, evex_v, nds_enc, pre, opc);
   } else {
+    if (UseAVX > 2 && attributes->is_rex_vex_w_reverted()) {
+      attributes->set_rex_vex_w(false);
+    }
     vex_prefix(vex_r, vex_b, vex_x, nds_enc, pre, opc);
   }
 }
 
 int Assembler::vex_prefix_and_encode(int dst_enc, int nds_enc, int src_enc, VexSimdPrefix pre, VexOpcode opc, InstructionAttr *attributes) {

@@ -6910,10 +6995,13 @@
     // can use vex_x as bank extender on rm encoding
     vex_x = (src_enc >= 16);
     attributes->set_is_evex_instruction();
     evex_prefix(vex_r, vex_b, vex_x, evex_r, evex_v, nds_enc, pre, opc);
   } else {
+    if (UseAVX > 2 && attributes->is_rex_vex_w_reverted()) {
+      attributes->set_rex_vex_w(false);
+    }
     vex_prefix(vex_r, vex_b, vex_x, nds_enc, pre, opc);
   }
 
   // return modrm byte components for operands
   return (((dst_enc & 7) << 3) | (src_enc & 7));
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