1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
|
//===-- PPCInstrHTM.td - The PowerPC Hardware Transactional Memory -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file describes the Hardware Transactional Memory extension to the
// PowerPC instruction set.
//
//===----------------------------------------------------------------------===//
def HasHTM : Predicate<"PPCSubTarget->hasHTM()">;
def HTM_get_imm : SDNodeXForm<imm, [{
return getI32Imm (N->getZExtValue(), SDLoc(N));
}]>;
let hasSideEffects = 1 in {
def TCHECK_RET : PPCCustomInserterPseudo<(outs gprc:$out), (ins), "#TCHECK_RET", []>;
def TBEGIN_RET : PPCCustomInserterPseudo<(outs gprc:$out), (ins u1imm:$R), "#TBEGIN_RET", []>;
}
let Predicates = [HasHTM] in {
let Defs = [CR0] in {
def TBEGIN : XForm_htm0 <31, 654,
(outs), (ins u1imm:$R), "tbegin. $R", IIC_SprMTSPR, []>;
def TEND : XForm_htm1 <31, 686,
(outs), (ins u1imm:$A), "tend. $A", IIC_SprMTSPR, []>;
def TABORT : XForm_base_r3xo <31, 910,
(outs), (ins gprc:$A), "tabort. $A", IIC_SprMTSPR,
[]>, isDOT {
let RST = 0;
let B = 0;
}
def TABORTWC : XForm_base_r3xo <31, 782,
(outs), (ins u5imm:$RTS, gprc:$A, gprc:$B),
"tabortwc. $RTS, $A, $B", IIC_SprMTSPR, []>,
isDOT;
def TABORTWCI : XForm_base_r3xo <31, 846,
(outs), (ins u5imm:$RTS, gprc:$A, u5imm:$B),
"tabortwci. $RTS, $A, $B", IIC_SprMTSPR, []>,
isDOT;
def TABORTDC : XForm_base_r3xo <31, 814,
(outs), (ins u5imm:$RTS, gprc:$A, gprc:$B),
"tabortdc. $RTS, $A, $B", IIC_SprMTSPR, []>,
isDOT;
def TABORTDCI : XForm_base_r3xo <31, 878,
(outs), (ins u5imm:$RTS, gprc:$A, u5imm:$B),
"tabortdci. $RTS, $A, $B", IIC_SprMTSPR, []>,
isDOT;
def TSR : XForm_htm2 <31, 750,
(outs), (ins u1imm:$L), "tsr. $L", IIC_SprMTSPR, []>,
isDOT;
def TRECLAIM : XForm_base_r3xo <31, 942,
(outs), (ins gprc:$A), "treclaim. $A",
IIC_SprMTSPR, []>,
isDOT {
let RST = 0;
let B = 0;
}
def TRECHKPT : XForm_base_r3xo <31, 1006,
(outs), (ins), "trechkpt.", IIC_SprMTSPR, []>,
isDOT {
let RST = 0;
let A = 0;
let B = 0;
}
}
def TCHECK : XForm_htm3 <31, 718,
(outs crrc:$BF), (ins), "tcheck $BF", IIC_SprMTSPR, []>;
// Builtins
// All HTM instructions, with the exception of tcheck, set CR0 with the
// value of the MSR Transaction State (TS) bits that exist before the
// instruction is executed. For tbegin., the EQ bit in CR0 can be used
// to determine whether the transaction was successfully started (0) or
// failed (1). We use an XORI pattern to 'flip' the bit to match the
// tbegin builtin API which defines a return value of 1 as success.
def : Pat<(int_ppc_tbegin i32:$R),
(XORI (TBEGIN_RET(HTM_get_imm imm:$R)), 1)>;
def : Pat<(int_ppc_tend i32:$R),
(TEND (HTM_get_imm imm:$R))>;
def : Pat<(int_ppc_tabort i32:$R),
(TABORT $R)>;
def : Pat<(int_ppc_tabortwc i32:$TO, i32:$RA, i32:$RB),
(TABORTWC (HTM_get_imm imm:$TO), $RA, $RB)>;
def : Pat<(int_ppc_tabortwci i32:$TO, i32:$RA, i32:$SI),
(TABORTWCI (HTM_get_imm imm:$TO), $RA, (HTM_get_imm imm:$SI))>;
def : Pat<(int_ppc_tabortdc i32:$TO, i32:$RA, i32:$RB),
(TABORTDC (HTM_get_imm imm:$TO), $RA, $RB)>;
def : Pat<(int_ppc_tabortdci i32:$TO, i32:$RA, i32:$SI),
(TABORTDCI (HTM_get_imm imm:$TO), $RA, (HTM_get_imm imm:$SI))>;
def : Pat<(int_ppc_tcheck),
(TCHECK_RET)>;
def : Pat<(int_ppc_treclaim i32:$RA),
(TRECLAIM $RA)>;
def : Pat<(int_ppc_trechkpt),
(TRECHKPT)>;
def : Pat<(int_ppc_tsr i32:$L),
(TSR (HTM_get_imm imm:$L))>;
def : Pat<(int_ppc_get_texasr),
(MFSPR8 130)>;
def : Pat<(int_ppc_get_texasru),
(MFSPR8 131)>;
def : Pat<(int_ppc_get_tfhar),
(MFSPR8 128)>;
def : Pat<(int_ppc_get_tfiar),
(MFSPR8 129)>;
def : Pat<(int_ppc_set_texasr i64:$V),
(MTSPR8 130, $V)>;
def : Pat<(int_ppc_set_texasru i64:$V),
(MTSPR8 131, $V)>;
def : Pat<(int_ppc_set_tfhar i64:$V),
(MTSPR8 128, $V)>;
def : Pat<(int_ppc_set_tfiar i64:$V),
(MTSPR8 129, $V)>;
// Extended mnemonics
def : Pat<(int_ppc_tendall),
(TEND 1)>;
def : Pat<(int_ppc_tresume),
(TSR 1)>;
def : Pat<(int_ppc_tsuspend),
(TSR 0)>;
def : Pat<(i64 (int_ppc_ttest)),
(RLDICL (i64 (INSERT_SUBREG (i64 (IMPLICIT_DEF)),
(TABORTWCI 0, (LI 0), 0), sub_32)),
36, 28)>;
} // [HasHTM]
|
