1 //===-- X86Instr3DNow.td - The 3DNow! Instruction Set ------*- tablegen -*-===//
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //===----------------------------------------------------------------------===//
9 // This file describes the 3DNow! instruction set, which extends MMX to support
10 // floating point and also adds a few more random instructions for good measure.
12 //===----------------------------------------------------------------------===//
14 class I3DNow<bits<8> o, Format F, dag outs, dag ins, string asm, list<dag> pat>
15 : I<o, F, outs, ins, asm, pat>, Requires<[Has3DNow]> {
18 class I3DNow_binop<bits<8> o, Format F, dag ins, string Mnemonic, list<dag> pat>
19 : I3DNow<o, F, (outs VR64:$dst), ins,
20 !strconcat(Mnemonic, "\t{$src2, $dst|$dst, $src2}"), pat>, ThreeDNow {
21 let Constraints = "$src1 = $dst";
24 class I3DNow_conv<bits<8> o, Format F, dag ins, string Mnemonic, list<dag> pat>
25 : I3DNow<o, F, (outs VR64:$dst), ins,
26 !strconcat(Mnemonic, "\t{$src, $dst|$dst, $src}"), pat>, ThreeDNow;
28 multiclass I3DNow_binop_rm_int<bits<8> opc, string Mn,
29 X86FoldableSchedWrite sched, bit Commutable = 0,
31 let isCommutable = Commutable in
32 def rr : I3DNow_binop<opc, MRMSrcReg, (ins VR64:$src1, VR64:$src2), Mn,
33 [(set VR64:$dst, (!cast<Intrinsic>(
34 !strconcat("int_x86_3dnow", Ver, "_", Mn)) VR64:$src1, VR64:$src2))]>,
36 def rm : I3DNow_binop<opc, MRMSrcMem, (ins VR64:$src1, i64mem:$src2), Mn,
37 [(set VR64:$dst, (!cast<Intrinsic>(
38 !strconcat("int_x86_3dnow", Ver, "_", Mn)) VR64:$src1,
39 (bitconvert (load_mmx addr:$src2))))]>,
40 Sched<[sched.Folded, sched.ReadAfterFold]>;
43 multiclass I3DNow_conv_rm_int<bits<8> opc, string Mn,
44 X86FoldableSchedWrite sched, string Ver = ""> {
45 def rr : I3DNow_conv<opc, MRMSrcReg, (ins VR64:$src), Mn,
46 [(set VR64:$dst, (!cast<Intrinsic>(
47 !strconcat("int_x86_3dnow", Ver, "_", Mn)) VR64:$src))]>,
49 def rm : I3DNow_conv<opc, MRMSrcMem, (ins i64mem:$src), Mn,
50 [(set VR64:$dst, (!cast<Intrinsic>(
51 !strconcat("int_x86_3dnow", Ver, "_", Mn))
52 (bitconvert (load_mmx addr:$src))))]>,
53 Sched<[sched.Folded, sched.ReadAfterFold]>;
56 defm PAVGUSB : I3DNow_binop_rm_int<0xBF, "pavgusb", SchedWriteVecALU.MMX, 1>;
57 defm PF2ID : I3DNow_conv_rm_int<0x1D, "pf2id", WriteCvtPS2I>;
58 defm PFACC : I3DNow_binop_rm_int<0xAE, "pfacc", WriteFAdd>;
59 defm PFADD : I3DNow_binop_rm_int<0x9E, "pfadd", WriteFAdd, 1>;
60 defm PFCMPEQ : I3DNow_binop_rm_int<0xB0, "pfcmpeq", WriteFAdd, 1>;
61 defm PFCMPGE : I3DNow_binop_rm_int<0x90, "pfcmpge", WriteFAdd>;
62 defm PFCMPGT : I3DNow_binop_rm_int<0xA0, "pfcmpgt", WriteFAdd>;
63 defm PFMAX : I3DNow_binop_rm_int<0xA4, "pfmax", WriteFAdd>;
64 defm PFMIN : I3DNow_binop_rm_int<0x94, "pfmin", WriteFAdd>;
65 defm PFMUL : I3DNow_binop_rm_int<0xB4, "pfmul", WriteFAdd, 1>;
66 defm PFRCP : I3DNow_conv_rm_int<0x96, "pfrcp", WriteFAdd>;
67 defm PFRCPIT1 : I3DNow_binop_rm_int<0xA6, "pfrcpit1", WriteFAdd>;
68 defm PFRCPIT2 : I3DNow_binop_rm_int<0xB6, "pfrcpit2", WriteFAdd>;
69 defm PFRSQIT1 : I3DNow_binop_rm_int<0xA7, "pfrsqit1", WriteFAdd>;
70 defm PFRSQRT : I3DNow_conv_rm_int<0x97, "pfrsqrt", WriteFAdd>;
71 defm PFSUB : I3DNow_binop_rm_int<0x9A, "pfsub", WriteFAdd, 1>;
72 defm PFSUBR : I3DNow_binop_rm_int<0xAA, "pfsubr", WriteFAdd, 1>;
73 defm PI2FD : I3DNow_conv_rm_int<0x0D, "pi2fd", WriteCvtI2PS>;
74 defm PMULHRW : I3DNow_binop_rm_int<0xB7, "pmulhrw", SchedWriteVecIMul.MMX, 1>;
76 let SchedRW = [WriteEMMS],
77 Defs = [MM0, MM1, MM2, MM3, MM4, MM5, MM6, MM7,
78 ST0, ST1, ST2, ST3, ST4, ST5, ST6, ST7] in
79 def FEMMS : I3DNow<0x0E, RawFrm, (outs), (ins), "femms",
80 [(int_x86_mmx_femms)]>, TB;
82 // PREFETCHWT1 is supported we want to use it for everything but T0.
83 def PrefetchWLevel : PatFrag<(ops), (i32 timm), [{
84 return N->getSExtValue() == 3 || !Subtarget->hasPREFETCHWT1();
87 // Use PREFETCHWT1 for NTA, T2, T1.
88 def PrefetchWT1Level : TImmLeaf<i32, [{
92 let SchedRW = [WriteLoad] in {
93 let Predicates = [Has3DNow, NoSSEPrefetch] in
94 def PREFETCH : I3DNow<0x0D, MRM0m, (outs), (ins i8mem:$addr),
96 [(prefetch addr:$addr, timm, timm, (i32 1))]>, TB;
98 def PREFETCHW : I<0x0D, MRM1m, (outs), (ins i8mem:$addr), "prefetchw\t$addr",
99 [(prefetch addr:$addr, (i32 1), (i32 PrefetchWLevel), (i32 1))]>,
100 TB, Requires<[HasPrefetchW]>;
102 def PREFETCHWT1 : I<0x0D, MRM2m, (outs), (ins i8mem:$addr), "prefetchwt1\t$addr",
103 [(prefetch addr:$addr, (i32 1), (i32 PrefetchWT1Level), (i32 1))]>,
104 TB, Requires<[HasPREFETCHWT1]>;
107 // "3DNowA" instructions
108 defm PF2IW : I3DNow_conv_rm_int<0x1C, "pf2iw", WriteCvtPS2I, "a">;
109 defm PI2FW : I3DNow_conv_rm_int<0x0C, "pi2fw", WriteCvtI2PS, "a">;
110 defm PFNACC : I3DNow_binop_rm_int<0x8A, "pfnacc", WriteFAdd, 0, "a">;
111 defm PFPNACC : I3DNow_binop_rm_int<0x8E, "pfpnacc", WriteFAdd, 0, "a">;
112 defm PSWAPD : I3DNow_conv_rm_int<0xBB, "pswapd", SchedWriteShuffle.MMX, "a">;