1 //===-- X86InstrMPX.td - MPX Instruction Set ---------*- tablegen -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file describes the X86 MPX instruction set, defining the
11 // instructions, and properties of the instructions which are needed for code
12 // generation, machine code emission, and analysis.
14 //===----------------------------------------------------------------------===//
16 // FIXME: Investigate a better scheduler class once MPX is used inside LLVM.
17 let SchedRW = [WriteSystem] in {
19 multiclass mpx_bound_make<bits<8> opc, string OpcodeStr> {
20 def 32rm: I<opc, MRMSrcMem, (outs BNDR:$dst), (ins anymem:$src),
21 OpcodeStr#"\t{$src, $dst|$dst, $src}", []>,
22 Requires<[HasMPX, Not64BitMode]>;
23 def 64rm: I<opc, MRMSrcMem, (outs BNDR:$dst), (ins anymem:$src),
24 OpcodeStr#"\t{$src, $dst|$dst, $src}", []>,
25 Requires<[HasMPX, In64BitMode]>;
28 defm BNDMK : mpx_bound_make<0x1B, "bndmk">, XS;
30 multiclass mpx_bound_check<bits<8> opc, string OpcodeStr> {
31 def 32rm: I<opc, MRMSrcMem, (outs), (ins BNDR:$src1, anymem:$src2),
32 OpcodeStr#"\t{$src2, $src1|$src1, $src2}", []>,
33 Requires<[HasMPX, Not64BitMode]>;
34 def 64rm: I<opc, MRMSrcMem, (outs), (ins BNDR:$src1, anymem:$src2),
35 OpcodeStr#"\t{$src2, $src1|$src1, $src2}", []>,
36 Requires<[HasMPX, In64BitMode]>;
38 def 32rr: I<opc, MRMSrcReg, (outs), (ins BNDR:$src1, GR32:$src2),
39 OpcodeStr#"\t{$src2, $src1|$src1, $src2}", []>,
40 Requires<[HasMPX, Not64BitMode]>;
41 def 64rr: I<opc, MRMSrcReg, (outs), (ins BNDR:$src1, GR64:$src2),
42 OpcodeStr#"\t{$src2, $src1|$src1, $src2}", []>,
43 Requires<[HasMPX, In64BitMode]>;
45 defm BNDCL : mpx_bound_check<0x1A, "bndcl">, XS, NotMemoryFoldable;
46 defm BNDCU : mpx_bound_check<0x1A, "bndcu">, XD, NotMemoryFoldable;
47 defm BNDCN : mpx_bound_check<0x1B, "bndcn">, XD, NotMemoryFoldable;
49 def BNDMOVrr : I<0x1A, MRMSrcReg, (outs BNDR:$dst), (ins BNDR:$src),
50 "bndmov\t{$src, $dst|$dst, $src}", []>, PD,
51 Requires<[HasMPX]>, NotMemoryFoldable;
53 def BNDMOV32rm : I<0x1A, MRMSrcMem, (outs BNDR:$dst), (ins i64mem:$src),
54 "bndmov\t{$src, $dst|$dst, $src}", []>, PD,
55 Requires<[HasMPX, Not64BitMode]>, NotMemoryFoldable;
56 def BNDMOV64rm : I<0x1A, MRMSrcMem, (outs BNDR:$dst), (ins i128mem:$src),
57 "bndmov\t{$src, $dst|$dst, $src}", []>, PD,
58 Requires<[HasMPX, In64BitMode]>, NotMemoryFoldable;
60 let isCodeGenOnly = 1, ForceDisassemble = 1 in
61 def BNDMOVrr_REV : I<0x1B, MRMDestReg, (outs BNDR:$dst), (ins BNDR:$src),
62 "bndmov\t{$src, $dst|$dst, $src}", []>, PD,
63 Requires<[HasMPX]>, NotMemoryFoldable;
65 def BNDMOV32mr : I<0x1B, MRMDestMem, (outs), (ins i64mem:$dst, BNDR:$src),
66 "bndmov\t{$src, $dst|$dst, $src}", []>, PD,
67 Requires<[HasMPX, Not64BitMode]>, NotMemoryFoldable;
68 def BNDMOV64mr : I<0x1B, MRMDestMem, (outs), (ins i128mem:$dst, BNDR:$src),
69 "bndmov\t{$src, $dst|$dst, $src}", []>, PD,
70 Requires<[HasMPX, In64BitMode]>, NotMemoryFoldable;
72 def BNDSTXmr: I<0x1B, MRMDestMem, (outs), (ins anymem:$dst, BNDR:$src),
73 "bndstx\t{$src, $dst|$dst, $src}", []>, PS,
77 def BNDLDXrm: I<0x1A, MRMSrcMem, (outs BNDR:$dst), (ins anymem:$src),
78 "bndldx\t{$src, $dst|$dst, $src}", []>, PS,