return 0;
}
+/* Check if the instruction use the REX registers or REX prefix. */
+static bool
+check_Rex_required (void)
+{
+ for (unsigned int op = 0; op < i.operands; op++)
+ {
+ if (i.types[op].bitfield.class != Reg)
+ continue;
+
+ if (i.op[op].regs->reg_flags & (RegRex | RegRex64))
+ return true;
+ }
+
+ if ((i.index_reg && (i.index_reg->reg_flags & (RegRex | RegRex64)))
+ || (i.base_reg && (i.base_reg->reg_flags & (RegRex | RegRex64))))
+ return true;
+
+ /* Check pseudo prefix {rex} are valid. */
+ return i.rex_encoding;
+}
+
+/* Optimize APX NDD insns to legacy insns. */
+static unsigned int
+can_convert_NDD_to_legacy (const insn_template *t)
+{
+ unsigned int match_dest_op = ~0;
+
+ if (!i.tm.opcode_modifier.nf
+ && i.reg_operands >= 2)
+ {
+ unsigned int dest = i.operands - 1;
+ unsigned int src1 = i.operands - 2;
+ unsigned int src2 = (i.operands > 3) ? i.operands - 3 : 0;
+
+ if (i.types[src1].bitfield.class == Reg
+ && i.op[src1].regs == i.op[dest].regs)
+ match_dest_op = src1;
+ /* If the first operand is the same as the third operand,
+ these instructions need to support the ability to commutative
+ the first two operands and still not change the semantics in order
+ to be optimized. */
+ else if (optimize > 1
+ && t->opcode_modifier.commutative
+ && i.types[src2].bitfield.class == Reg
+ && i.op[src2].regs == i.op[dest].regs)
+ match_dest_op = src2;
+ }
+ return match_dest_op;
+}
+
/* Helper function for the progress() macro in match_template(). */
static INLINE enum i386_error progress (enum i386_error new,
enum i386_error last,
i.memshift = memshift;
}
+ /* If we can optimize a NDD insn to legacy insn, like
+ add %r16, %r8, %r8 -> add %r16, %r8,
+ add %r8, %r16, %r8 -> add %r16, %r8, then rematch template.
+ Note that the semantics have not been changed. */
+ if (optimize
+ && !i.no_optimize
+ && i.vec_encoding != vex_encoding_evex
+ && t + 1 < current_templates.end
+ && !t[1].opcode_modifier.evex
+ && t[1].opcode_space <= SPACE_0F38
+ && t->opcode_modifier.vexvvvv == VexVVVV_DST
+ && (i.types[i.operands - 1].bitfield.dword
+ || i.types[i.operands - 1].bitfield.qword))
+ {
+ unsigned int match_dest_op = can_convert_NDD_to_legacy (t);
+
+ if (match_dest_op != (unsigned int) ~0)
+ {
+ size_match = true;
+ /* We ensure that the next template has the same input
+ operands as the original matching template by the first
+ opernd (ATT). To avoid someone support new NDD insns and
+ put it in the wrong position. */
+ overlap0 = operand_type_and (i.types[0],
+ t[1].operand_types[0]);
+ if (t->opcode_modifier.d)
+ overlap1 = operand_type_and (i.types[0],
+ t[1].operand_types[1]);
+ if (!operand_type_match (overlap0, i.types[0])
+ && (!t->opcode_modifier.d
+ || !operand_type_match (overlap1, i.types[0])))
+ size_match = false;
+
+ if (size_match
+ && (t[1].opcode_space <= SPACE_0F
+ /* Some non-legacy-map0/1 insns can be shorter when
+ legacy-encoded and when no REX prefix is required. */
+ || (!check_EgprOperands (t + 1)
+ && !check_Rex_required ()
+ && !i.op[i.operands - 1].regs->reg_type.bitfield.qword)))
+ {
+ if (i.operands > 2 && match_dest_op == i.operands - 3)
+ swap_2_operands (match_dest_op, i.operands - 2);
+
+ --i.operands;
+ --i.reg_operands;
+
+ specific_error = progress (internal_error);
+ continue;
+ }
+
+ }
+ }
+
/* We've found a match; break out of loop. */
break;
}
--- /dev/null
+#as: -Os
+#objdump: -drw
+#name: x86-64 APX NDD optimized encoding
+#source: x86-64-apx-ndd-optimize.s
+
+.*: +file format .*
+
+
+Disassembly of section .text:
+
+0+ <_start>:
+\s*[a-f0-9]+:\s*d5 4d 01 f8 add %r31,%r8
+\s*[a-f0-9]+:\s*62 44 3c 18 00 f8 add %r31b,%r8b,%r8b
+\s*[a-f0-9]+:\s*d5 4d 01 f8 add %r31,%r8
+\s*[a-f0-9]+:\s*d5 1d 03 c7 add %r31,%r8
+\s*[a-f0-9]+:\s*d5 4d 03 38 add \(%r8\),%r31
+\s*[a-f0-9]+:\s*d5 1d 03 07 add \(%r31\),%r8
+\s*[a-f0-9]+:\s*49 81 c7 33 44 34 12 add \$0x12344433,%r15
+\s*[a-f0-9]+:\s*49 81 c0 11 22 33 f4 add \$0xfffffffff4332211,%r8
+\s*[a-f0-9]+:\s*d5 19 ff c7 inc %r31
+\s*[a-f0-9]+:\s*62 dc 04 10 fe c7 inc %r31b,%r31b
+\s*[a-f0-9]+:\s*d5 1c 29 f9 sub %r15,%r17
+\s*[a-f0-9]+:\s*62 7c 74 10 28 f9 sub %r15b,%r17b,%r17b
+\s*[a-f0-9]+:\s*62 54 84 18 29 38 sub %r15,\(%r8\),%r15
+\s*[a-f0-9]+:\s*d5 49 2b 04 07 sub \(%r15,%rax,1\),%r16
+\s*[a-f0-9]+:\s*d5 19 81 ee 34 12 00 00 sub \$0x1234,%r30
+\s*[a-f0-9]+:\s*d5 18 ff c9 dec %r17
+\s*[a-f0-9]+:\s*62 fc 74 10 fe c9 dec %r17b,%r17b
+\s*[a-f0-9]+:\s*d5 1c 19 f9 sbb %r15,%r17
+\s*[a-f0-9]+:\s*62 7c 74 10 18 f9 sbb %r15b,%r17b,%r17b
+\s*[a-f0-9]+:\s*62 54 84 18 19 38 sbb %r15,\(%r8\),%r15
+\s*[a-f0-9]+:\s*d5 49 1b 04 07 sbb \(%r15,%rax,1\),%r16
+\s*[a-f0-9]+:\s*d5 19 81 de 34 12 00 00 sbb \$0x1234,%r30
+\s*[a-f0-9]+:\s*d5 1c 21 f9 and %r15,%r17
+\s*[a-f0-9]+:\s*62 7c 74 10 20 f9 and %r15b,%r17b,%r17b
+\s*[a-f0-9]+:\s*4d 23 38 and \(%r8\),%r15
+\s*[a-f0-9]+:\s*d5 49 23 04 07 and \(%r15,%rax,1\),%r16
+\s*[a-f0-9]+:\s*d5 11 81 e6 34 12 00 00 and \$0x1234,%r30d
+\s*[a-f0-9]+:\s*d5 1c 09 f9 or %r15,%r17
+\s*[a-f0-9]+:\s*62 7c 74 10 08 f9 or %r15b,%r17b,%r17b
+\s*[a-f0-9]+:\s*4d 0b 38 or \(%r8\),%r15
+\s*[a-f0-9]+:\s*d5 49 0b 04 07 or \(%r15,%rax,1\),%r16
+\s*[a-f0-9]+:\s*d5 19 81 ce 34 12 00 00 or \$0x1234,%r30
+\s*[a-f0-9]+:\s*d5 1c 31 f9 xor %r15,%r17
+\s*[a-f0-9]+:\s*62 7c 74 10 30 f9 xor %r15b,%r17b,%r17b
+\s*[a-f0-9]+:\s*4d 33 38 xor \(%r8\),%r15
+\s*[a-f0-9]+:\s*d5 49 33 04 07 xor \(%r15,%rax,1\),%r16
+\s*[a-f0-9]+:\s*d5 19 81 f6 34 12 00 00 xor \$0x1234,%r30
+\s*[a-f0-9]+:\s*d5 1c 11 f9 adc %r15,%r17
+\s*[a-f0-9]+:\s*62 7c 74 10 10 f9 adc %r15b,%r17b,%r17b
+\s*[a-f0-9]+:\s*4d 13 38 adc \(%r8\),%r15
+\s*[a-f0-9]+:\s*d5 49 13 04 07 adc \(%r15,%rax,1\),%r16
+\s*[a-f0-9]+:\s*d5 19 81 d6 34 12 00 00 adc \$0x1234,%r30
+\s*[a-f0-9]+:\s*d5 18 f7 d9 neg %r17
+\s*[a-f0-9]+:\s*62 fc 74 10 f6 d9 neg %r17b,%r17b
+\s*[a-f0-9]+:\s*d5 18 f7 d1 not %r17
+\s*[a-f0-9]+:\s*62 fc 74 10 f6 d1 not %r17b,%r17b
+\s*[a-f0-9]+:\s*67 0f af 90 09 09 09 00 imul 0x90909\(%eax\),%edx
+\s*[a-f0-9]+:\s*d5 aa af 94 f8 09 09 00 00 imul 0x909\(%rax,%r31,8\),%rdx
+\s*[a-f0-9]+:\s*48 0f af d0 imul %rax,%rdx
+\s*[a-f0-9]+:\s*d5 19 d1 c7 rol \$1,%r31
+\s*[a-f0-9]+:\s*62 dc 04 10 d0 c7 rol \$1,%r31b,%r31b
+\s*[a-f0-9]+:\s*49 c1 c4 02 rol \$0x2,%r12
+\s*[a-f0-9]+:\s*62 d4 1c 18 c0 c4 02 rol \$0x2,%r12b,%r12b
+\s*[a-f0-9]+:\s*d5 19 d1 cf ror \$1,%r31
+\s*[a-f0-9]+:\s*62 dc 04 10 d0 cf ror \$1,%r31b,%r31b
+\s*[a-f0-9]+:\s*49 c1 cc 02 ror \$0x2,%r12
+\s*[a-f0-9]+:\s*62 d4 1c 18 c0 cc 02 ror \$0x2,%r12b,%r12b
+\s*[a-f0-9]+:\s*d5 19 d1 d7 rcl \$1,%r31
+\s*[a-f0-9]+:\s*62 dc 04 10 d0 d7 rcl \$1,%r31b,%r31b
+\s*[a-f0-9]+:\s*49 c1 d4 02 rcl \$0x2,%r12
+\s*[a-f0-9]+:\s*62 d4 1c 18 c0 d4 02 rcl \$0x2,%r12b,%r12b
+\s*[a-f0-9]+:\s*d5 19 d1 df rcr \$1,%r31
+\s*[a-f0-9]+:\s*62 dc 04 10 d0 df rcr \$1,%r31b,%r31b
+\s*[a-f0-9]+:\s*49 c1 dc 02 rcr \$0x2,%r12
+\s*[a-f0-9]+:\s*62 d4 1c 18 c0 dc 02 rcr \$0x2,%r12b,%r12b
+\s*[a-f0-9]+:\s*d5 19 d1 e7 shl \$1,%r31
+\s*[a-f0-9]+:\s*62 dc 04 10 d0 e7 shl \$1,%r31b,%r31b
+\s*[a-f0-9]+:\s*49 c1 e4 02 shl \$0x2,%r12
+\s*[a-f0-9]+:\s*62 d4 1c 18 c0 e4 02 shl \$0x2,%r12b,%r12b
+\s*[a-f0-9]+:\s*d5 19 d1 e7 shl \$1,%r31
+\s*[a-f0-9]+:\s*62 dc 04 10 d0 e7 shl \$1,%r31b,%r31b
+\s*[a-f0-9]+:\s*49 c1 e4 02 shl \$0x2,%r12
+\s*[a-f0-9]+:\s*62 d4 1c 18 c0 e4 02 shl \$0x2,%r12b,%r12b
+\s*[a-f0-9]+:\s*d5 19 d1 ef shr \$1,%r31
+\s*[a-f0-9]+:\s*62 dc 04 10 d0 ef shr \$1,%r31b,%r31b
+\s*[a-f0-9]+:\s*49 c1 ec 02 shr \$0x2,%r12
+\s*[a-f0-9]+:\s*62 d4 1c 18 c0 ec 02 shr \$0x2,%r12b,%r12b
+\s*[a-f0-9]+:\s*d5 19 d1 ff sar \$1,%r31
+\s*[a-f0-9]+:\s*62 dc 04 10 d0 ff sar \$1,%r31b,%r31b
+\s*[a-f0-9]+:\s*49 c1 fc 02 sar \$0x2,%r12
+\s*[a-f0-9]+:\s*62 d4 1c 18 c0 fc 02 sar \$0x2,%r12b,%r12b
+\s*[a-f0-9]+:\s*62 74 9c 18 24 20 01 shld \$0x1,%r12,\(%rax\),%r12
+\s*[a-f0-9]+:\s*4d 0f a4 c4 02 shld \$0x2,%r8,%r12
+\s*[a-f0-9]+:\s*62 54 bc 18 24 c4 02 shld \$0x2,%r8,%r12,%r8
+\s*[a-f0-9]+:\s*62 74 b4 18 a5 08 shld %cl,%r9,\(%rax\),%r9
+\s*[a-f0-9]+:\s*d5 9c a5 e0 shld %cl,%r12,%r16
+\s*[a-f0-9]+:\s*62 7c 9c 18 a5 e0 shld %cl,%r12,%r16,%r12
+\s*[a-f0-9]+:\s*62 74 9c 18 2c 20 01 shrd \$0x1,%r12,\(%rax\),%r12
+\s*[a-f0-9]+:\s*4d 0f ac ec 01 shrd \$0x1,%r13,%r12
+\s*[a-f0-9]+:\s*62 54 94 18 2c ec 01 shrd \$0x1,%r13,%r12,%r13
+\s*[a-f0-9]+:\s*62 74 b4 18 ad 08 shrd %cl,%r9,\(%rax\),%r9
+\s*[a-f0-9]+:\s*d5 9c ad e0 shrd %cl,%r12,%r16
+\s*[a-f0-9]+:\s*62 7c 9c 18 ad e0 shrd %cl,%r12,%r16,%r12
+\s*[a-f0-9]+:\s*67 0f 40 90 90 90 90 90 cmovo -0x6f6f6f70\(%eax\),%edx
+\s*[a-f0-9]+:\s*67 0f 41 90 90 90 90 90 cmovno -0x6f6f6f70\(%eax\),%edx
+\s*[a-f0-9]+:\s*67 0f 42 90 90 90 90 90 cmovb -0x6f6f6f70\(%eax\),%edx
+\s*[a-f0-9]+:\s*67 0f 43 90 90 90 90 90 cmovae -0x6f6f6f70\(%eax\),%edx
+\s*[a-f0-9]+:\s*67 0f 44 90 90 90 90 90 cmove -0x6f6f6f70\(%eax\),%edx
+\s*[a-f0-9]+:\s*67 0f 45 90 90 90 90 90 cmovne -0x6f6f6f70\(%eax\),%edx
+\s*[a-f0-9]+:\s*67 0f 46 90 90 90 90 90 cmovbe -0x6f6f6f70\(%eax\),%edx
+\s*[a-f0-9]+:\s*67 0f 47 90 90 90 90 90 cmova -0x6f6f6f70\(%eax\),%edx
+\s*[a-f0-9]+:\s*67 0f 48 90 90 90 90 90 cmovs -0x6f6f6f70\(%eax\),%edx
+\s*[a-f0-9]+:\s*67 0f 49 90 90 90 90 90 cmovns -0x6f6f6f70\(%eax\),%edx
+\s*[a-f0-9]+:\s*67 0f 4a 90 90 90 90 90 cmovp -0x6f6f6f70\(%eax\),%edx
+\s*[a-f0-9]+:\s*67 0f 4b 90 90 90 90 90 cmovnp -0x6f6f6f70\(%eax\),%edx
+\s*[a-f0-9]+:\s*67 0f 4c 90 90 90 90 90 cmovl -0x6f6f6f70\(%eax\),%edx
+\s*[a-f0-9]+:\s*67 0f 4d 90 90 90 90 90 cmovge -0x6f6f6f70\(%eax\),%edx
+\s*[a-f0-9]+:\s*67 0f 4e 90 90 90 90 90 cmovle -0x6f6f6f70\(%eax\),%edx
+\s*[a-f0-9]+:\s*67 0f 4f 90 90 90 90 90 cmovg -0x6f6f6f70\(%eax\),%edx
+\s*[a-f0-9]+:\s*66 0f 38 f6 c3 adcx %ebx,%eax
+\s*[a-f0-9]+:\s*66 0f 38 f6 c3 adcx %ebx,%eax
+\s*[a-f0-9]+:\s*62 f4 fd 18 66 c3 adcx %rbx,%rax,%rax
+\s*[a-f0-9]+:\s*62 74 3d 18 66 c0 adcx %eax,%r8d,%r8d
+\s*[a-f0-9]+:\s*62 d4 7d 18 66 c7 adcx %r15d,%eax,%eax
+\s*[a-f0-9]+:\s*67 66 0f 38 f6 04 0a adcx \(%edx,%ecx,1\),%eax
+\s*[a-f0-9]+:\s*f3 0f 38 f6 c3 adox %ebx,%eax
+\s*[a-f0-9]+:\s*f3 0f 38 f6 c3 adox %ebx,%eax
+\s*[a-f0-9]+:\s*62 f4 fe 18 66 c3 adox %rbx,%rax,%rax
+\s*[a-f0-9]+:\s*62 74 3e 18 66 c0 adox %eax,%r8d,%r8d
+\s*[a-f0-9]+:\s*62 d4 7e 18 66 c7 adox %r15d,%eax,%eax
+\s*[a-f0-9]+:\s*67 f3 0f 38 f6 04 0a adox \(%edx,%ecx,1\),%eax
--- /dev/null
+# Check 64bit APX NDD instructions with optimized encoding
+
+ .text
+_start:
+add %r31,%r8,%r8
+addb %r31b,%r8b,%r8b
+{store} add %r31,%r8,%r8
+{load} add %r31,%r8,%r8
+add %r31,(%r8),%r31
+add (%r31),%r8,%r8
+add $0x12344433,%r15,%r15
+add $0xfffffffff4332211,%r8,%r8
+inc %r31,%r31
+incb %r31b,%r31b
+sub %r15,%r17,%r17
+subb %r15b,%r17b,%r17b
+sub %r15,(%r8),%r15
+sub (%r15,%rax,1),%r16,%r16
+sub $0x1234,%r30,%r30
+dec %r17,%r17
+decb %r17b,%r17b
+sbb %r15,%r17,%r17
+sbbb %r15b,%r17b,%r17b
+sbb %r15,(%r8),%r15
+sbb (%r15,%rax,1),%r16,%r16
+sbb $0x1234,%r30,%r30
+and %r15,%r17,%r17
+andb %r15b,%r17b,%r17b
+and %r15,(%r8),%r15
+and (%r15,%rax,1),%r16,%r16
+and $0x1234,%r30,%r30
+or %r15,%r17,%r17
+orb %r15b,%r17b,%r17b
+or %r15,(%r8),%r15
+or (%r15,%rax,1),%r16,%r16
+or $0x1234,%r30,%r30
+xor %r15,%r17,%r17
+xorb %r15b,%r17b,%r17b
+xor %r15,(%r8),%r15
+xor (%r15,%rax,1),%r16,%r16
+xor $0x1234,%r30,%r30
+adc %r15,%r17,%r17
+adcb %r15b,%r17b,%r17b
+adc %r15,(%r8),%r15
+adc (%r15,%rax,1),%r16,%r16
+adc $0x1234,%r30,%r30
+neg %r17,%r17
+negb %r17b,%r17b
+not %r17,%r17
+notb %r17b,%r17b
+imul 0x90909(%eax),%edx,%edx
+imul 0x909(%rax,%r31,8),%rdx,%rdx
+imul %rdx,%rax,%rdx
+rol $0x1,%r31,%r31
+rolb $0x1,%r31b,%r31b
+rol $0x2,%r12,%r12
+rolb $0x2,%r12b,%r12b
+ror $0x1,%r31,%r31
+rorb $0x1,%r31b,%r31b
+ror $0x2,%r12,%r12
+rorb $0x2,%r12b,%r12b
+rcl $0x1,%r31,%r31
+rclb $0x1,%r31b,%r31b
+rcl $0x2,%r12,%r12
+rclb $0x2,%r12b,%r12b
+rcr $0x1,%r31,%r31
+rcrb $0x1,%r31b,%r31b
+rcr $0x2,%r12,%r12
+rcrb $0x2,%r12b,%r12b
+sal $0x1,%r31,%r31
+salb $0x1,%r31b,%r31b
+sal $0x2,%r12,%r12
+salb $0x2,%r12b,%r12b
+shl $0x1,%r31,%r31
+shlb $0x1,%r31b,%r31b
+shl $0x2,%r12,%r12
+shlb $0x2,%r12b,%r12b
+shr $0x1,%r31,%r31
+shrb $0x1,%r31b,%r31b
+shr $0x2,%r12,%r12
+shrb $0x2,%r12b,%r12b
+sar $0x1,%r31,%r31
+sarb $0x1,%r31b,%r31b
+sar $0x2,%r12,%r12
+sarb $0x2,%r12b,%r12b
+shld $0x1,%r12,(%rax),%r12
+shld $0x2,%r8,%r12,%r12
+shld $0x2,%r8,%r12,%r8
+shld %cl,%r9,(%rax),%r9
+shld %cl,%r12,%r16,%r16
+shld %cl,%r12,%r16,%r12
+shrd $0x1,%r12,(%rax),%r12
+shrd $0x1,%r13,%r12,%r12
+shrd $0x1,%r13,%r12,%r13
+shrd %cl,%r9,(%rax),%r9
+shrd %cl,%r12,%r16,%r16
+shrd %cl,%r12,%r16,%r12
+cmovo 0x90909090(%eax),%edx,%edx
+cmovno 0x90909090(%eax),%edx,%edx
+cmovb 0x90909090(%eax),%edx,%edx
+cmovae 0x90909090(%eax),%edx,%edx
+cmove 0x90909090(%eax),%edx,%edx
+cmovne 0x90909090(%eax),%edx,%edx
+cmovbe 0x90909090(%eax),%edx,%edx
+cmova 0x90909090(%eax),%edx,%edx
+cmovs 0x90909090(%eax),%edx,%edx
+cmovns 0x90909090(%eax),%edx,%edx
+cmovp 0x90909090(%eax),%edx,%edx
+cmovnp 0x90909090(%eax),%edx,%edx
+cmovl 0x90909090(%eax),%edx,%edx
+cmovge 0x90909090(%eax),%edx,%edx
+cmovle 0x90909090(%eax),%edx,%edx
+cmovg 0x90909090(%eax),%edx,%edx
+adcx %ebx,%eax,%eax
+adcx %eax,%ebx,%eax
+adcx %rbx,%rax,%rax
+adcx %eax,%r8d,%r8d
+adcx %r15d,%eax,%eax
+adcx (%edx,%ecx,1),%eax,%eax
+adox %ebx,%eax,%eax
+adox %eax,%ebx,%eax
+adox %rbx,%rax,%rax
+adox %eax,%r8d,%r8d
+adox %r15d,%eax,%eax
+adox (%edx,%ecx,1),%eax,%eax
projects / thirdparty / binutils-gdb.git / commitdiff
