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
|
;RUN: llc < %s -mtriple=amdgcn -mcpu=verde -amdgpu-atomic-optimizer-strategy=None -verify-machineinstrs | FileCheck %s
;RUN: llc < %s -mtriple=amdgcn -mcpu=tonga -amdgpu-atomic-optimizer-strategy=None -verify-machineinstrs | FileCheck %s
;CHECK-LABEL: {{^}}test1:
;CHECK-NOT: s_waitcnt
;CHECK: buffer_atomic_swap v0, off, s[0:3], 0 glc
;CHECK: s_movk_i32 [[SOFS:s[0-9]+]], 0x1ffc
;CHECK: s_waitcnt vmcnt(0)
;CHECK: buffer_atomic_swap v0, v1, s[0:3], 0 offen glc
;CHECK: s_waitcnt vmcnt(0)
;CHECK: buffer_atomic_swap v0, v1, s[0:3], 0 offen offset:42 glc
;CHECK-DAG: s_waitcnt vmcnt(0)
;CHECK: buffer_atomic_swap v0, off, s[0:3], [[SOFS]] offset:4 glc
;CHECK: s_waitcnt vmcnt(0)
;CHECK: buffer_atomic_swap v0, off, s[0:3], 0{{$}}
;CHECK: buffer_atomic_swap v0, off, s[0:3], 0 glc
define amdgpu_ps float @test1(<4 x i32> inreg %rsrc, i32 %data, i32 %voffset) {
main_body:
%o1 = call i32 @llvm.amdgcn.raw.buffer.atomic.swap.i32(i32 %data, <4 x i32> %rsrc, i32 0, i32 0, i32 0)
%o3 = call i32 @llvm.amdgcn.raw.buffer.atomic.swap.i32(i32 %o1, <4 x i32> %rsrc, i32 %voffset, i32 0, i32 0)
%off5 = add i32 %voffset, 42
%o5 = call i32 @llvm.amdgcn.raw.buffer.atomic.swap.i32(i32 %o3, <4 x i32> %rsrc, i32 %off5, i32 0, i32 0)
%o6 = call i32 @llvm.amdgcn.raw.buffer.atomic.swap.i32(i32 %o5, <4 x i32> %rsrc, i32 4, i32 8188, i32 0)
%unused = call i32 @llvm.amdgcn.raw.buffer.atomic.swap.i32(i32 %o6, <4 x i32> %rsrc, i32 0, i32 0, i32 0)
%o7 = bitcast i32 %o6 to float
%out = call float @llvm.amdgcn.raw.buffer.atomic.swap.f32(float %o7, <4 x i32> %rsrc, i32 0, i32 0, i32 0)
ret float %out
}
;CHECK-LABEL: {{^}}test2:
;CHECK-NOT: s_waitcnt
;CHECK: buffer_atomic_add v0, v1, s[0:3], 0 offen glc{{$}}
;CHECK: s_waitcnt vmcnt(0)
;CHECK: buffer_atomic_sub v0, v1, s[0:3], 0 offen glc slc
;CHECK: s_waitcnt vmcnt(0)
;CHECK: buffer_atomic_smin v0, v1, s[0:3], 0 offen glc{{$}}
;CHECK: s_waitcnt vmcnt(0)
;CHECK: buffer_atomic_umin v0, v1, s[0:3], 0 offen glc slc
;CHECK: s_waitcnt vmcnt(0)
;CHECK: buffer_atomic_smax v0, v1, s[0:3], 0 offen glc{{$}}
;CHECK: s_waitcnt vmcnt(0)
;CHECK: buffer_atomic_umax v0, v1, s[0:3], 0 offen glc slc
;CHECK: s_waitcnt vmcnt(0)
;CHECK: buffer_atomic_and v0, v1, s[0:3], 0 offen glc{{$}}
;CHECK: s_waitcnt vmcnt(0)
;CHECK: buffer_atomic_or v0, v1, s[0:3], 0 offen glc slc
;CHECK: s_waitcnt vmcnt(0)
;CHECK: buffer_atomic_xor v0, v1, s[0:3], 0 offen glc
;CHECK: s_waitcnt vmcnt(0)
;CHECK: buffer_atomic_inc v0, v1, s[0:3], 0 offen glc
;CHECK: s_waitcnt vmcnt(0)
;CHECK: buffer_atomic_dec v0, v1, s[0:3], 0 offen glc
define amdgpu_ps float @test2(<4 x i32> inreg %rsrc, i32 %data, i32 %voffset) {
main_body:
%t1 = call i32 @llvm.amdgcn.raw.buffer.atomic.add.i32(i32 %data, <4 x i32> %rsrc, i32 %voffset, i32 0, i32 0)
%t2 = call i32 @llvm.amdgcn.raw.buffer.atomic.sub.i32(i32 %t1, <4 x i32> %rsrc, i32 %voffset, i32 0, i32 2)
%t3 = call i32 @llvm.amdgcn.raw.buffer.atomic.smin.i32(i32 %t2, <4 x i32> %rsrc, i32 %voffset, i32 0, i32 0)
%t4 = call i32 @llvm.amdgcn.raw.buffer.atomic.umin.i32(i32 %t3, <4 x i32> %rsrc, i32 %voffset, i32 0, i32 2)
%t5 = call i32 @llvm.amdgcn.raw.buffer.atomic.smax.i32(i32 %t4, <4 x i32> %rsrc, i32 %voffset, i32 0, i32 0)
%t6 = call i32 @llvm.amdgcn.raw.buffer.atomic.umax.i32(i32 %t5, <4 x i32> %rsrc, i32 %voffset, i32 0, i32 2)
%t7 = call i32 @llvm.amdgcn.raw.buffer.atomic.and.i32(i32 %t6, <4 x i32> %rsrc, i32 %voffset, i32 0, i32 0)
%t8 = call i32 @llvm.amdgcn.raw.buffer.atomic.or.i32(i32 %t7, <4 x i32> %rsrc, i32 %voffset, i32 0, i32 2)
%t9 = call i32 @llvm.amdgcn.raw.buffer.atomic.xor.i32(i32 %t8, <4 x i32> %rsrc, i32 %voffset, i32 0, i32 0)
%t10 = call i32 @llvm.amdgcn.raw.buffer.atomic.inc.i32(i32 %t9, <4 x i32> %rsrc, i32 %voffset, i32 0, i32 0)
%t11 = call i32 @llvm.amdgcn.raw.buffer.atomic.dec.i32(i32 %t10, <4 x i32> %rsrc, i32 %voffset, i32 0, i32 0)
%out = bitcast i32 %t11 to float
ret float %out
}
; Ideally, we would teach tablegen & friends that cmpswap only modifies the
; first vgpr. Since we don't do that yet, the register allocator will have to
; create copies which we don't bother to track here.
;
;CHECK-LABEL: {{^}}test3:
;CHECK-NOT: s_waitcnt
;CHECK: buffer_atomic_cmpswap {{v\[[0-9]+:[0-9]+\]}}, off, s[0:3], 0 glc
;CHECK: s_waitcnt vmcnt(0)
;CHECK: s_movk_i32 [[SOFS:s[0-9]+]], 0x1ffc
;CHECK: buffer_atomic_cmpswap {{v\[[0-9]+:[0-9]+\]}}, v2, s[0:3], 0 offen glc
;CHECK: s_waitcnt vmcnt(0)
;CHECK: buffer_atomic_cmpswap {{v\[[0-9]+:[0-9]+\]}}, v2, s[0:3], 0 offen offset:44 glc
;CHECK-DAG: s_waitcnt vmcnt(0)
;CHECK: buffer_atomic_cmpswap {{v\[[0-9]+:[0-9]+\]}}, off, s[0:3], [[SOFS]] offset:4 glc
define amdgpu_ps float @test3(<4 x i32> inreg %rsrc, i32 %data, i32 %cmp, i32 %vindex, i32 %voffset) {
main_body:
%o1 = call i32 @llvm.amdgcn.raw.buffer.atomic.cmpswap.i32(i32 %data, i32 %cmp, <4 x i32> %rsrc, i32 0, i32 0, i32 0)
%o3 = call i32 @llvm.amdgcn.raw.buffer.atomic.cmpswap.i32(i32 %o1, i32 %cmp, <4 x i32> %rsrc, i32 %voffset, i32 0, i32 0)
%ofs.5 = add i32 %voffset, 44
%o5 = call i32 @llvm.amdgcn.raw.buffer.atomic.cmpswap.i32(i32 %o3, i32 %cmp, <4 x i32> %rsrc, i32 %ofs.5, i32 0, i32 0)
%o6 = call i32 @llvm.amdgcn.raw.buffer.atomic.cmpswap.i32(i32 %o5, i32 %cmp, <4 x i32> %rsrc, i32 4, i32 8188, i32 0)
; Detecting the no-return variant doesn't work right now because of how the
; intrinsic is replaced by an instruction that feeds into an EXTRACT_SUBREG.
; Since there probably isn't a reasonable use-case of cmpswap that discards
; the return value, that seems okay.
;
; %unused = call i32 @llvm.amdgcn.raw.buffer.atomic.cmpswap.i32(i32 %o6, i32 %cmp, <4 x i32> %rsrc, i32 0, i32 0, i32 0)
%out = bitcast i32 %o6 to float
ret float %out
}
;CHECK-LABEL: {{^}}test4:
;CHECK: buffer_atomic_add v0,
define amdgpu_ps float @test4() {
main_body:
%v = call i32 @llvm.amdgcn.raw.buffer.atomic.add.i32(i32 1, <4 x i32> poison, i32 4, i32 0, i32 0)
%v.float = bitcast i32 %v to float
ret float %v.float
}
;CHECK-LABEL: {{^}}test5:
;CHECK-NOT: s_waitcnt
;CHECK: buffer_atomic_cmpswap_x2 {{v\[[0-9]+:[0-9]+\]}}, off, s[0:3], 0 glc
;CHECK-DAG: s_waitcnt vmcnt(0)
;CHECK-DAG: s_movk_i32 [[SOFS:s[0-9]+]], 0x1ffc
;CHECK: buffer_atomic_cmpswap_x2 {{v\[[0-9]+:[0-9]+\]}}, v4, s[0:3], 0 offen glc
;CHECK: s_waitcnt vmcnt(0)
;CHECK: buffer_atomic_cmpswap_x2 {{v\[[0-9]+:[0-9]+\]}}, v4, s[0:3], 0 offen offset:44 glc
;CHECK-DAG: s_waitcnt vmcnt(0)
;CHECK: buffer_atomic_cmpswap_x2 {{v\[[0-9]+:[0-9]+\]}}, off, s[0:3], [[SOFS]] offset:4 glc
define amdgpu_ps float @test5(<4 x i32> inreg %rsrc, i64 %data, i64 %cmp, i32 %vindex, i32 %voffset) {
main_body:
%o1 = call i64 @llvm.amdgcn.raw.buffer.atomic.cmpswap.i64(i64 %data, i64 %cmp, <4 x i32> %rsrc, i32 0, i32 0, i32 0)
%o3 = call i64 @llvm.amdgcn.raw.buffer.atomic.cmpswap.i64(i64 %o1, i64 %cmp, <4 x i32> %rsrc, i32 %voffset, i32 0, i32 0)
%ofs.5 = add i32 %voffset, 44
%o5 = call i64 @llvm.amdgcn.raw.buffer.atomic.cmpswap.i64(i64 %o3, i64 %cmp, <4 x i32> %rsrc, i32 %ofs.5, i32 0, i32 0)
%o6 = call i64 @llvm.amdgcn.raw.buffer.atomic.cmpswap.i64(i64 %o5, i64 %cmp, <4 x i32> %rsrc, i32 4, i32 8188, i32 0)
%out = sitofp i64 %o6 to float
ret float %out
}
declare i32 @llvm.amdgcn.raw.buffer.atomic.swap.i32(i32, <4 x i32>, i32, i32, i32) #0
declare float @llvm.amdgcn.raw.buffer.atomic.swap.f32(float, <4 x i32>, i32, i32, i32) #0
declare i32 @llvm.amdgcn.raw.buffer.atomic.add.i32(i32, <4 x i32>, i32, i32, i32) #0
declare i32 @llvm.amdgcn.raw.buffer.atomic.sub.i32(i32, <4 x i32>, i32, i32, i32) #0
declare i32 @llvm.amdgcn.raw.buffer.atomic.smin.i32(i32, <4 x i32>, i32, i32, i32) #0
declare i32 @llvm.amdgcn.raw.buffer.atomic.umin.i32(i32, <4 x i32>, i32, i32, i32) #0
declare i32 @llvm.amdgcn.raw.buffer.atomic.smax.i32(i32, <4 x i32>, i32, i32, i32) #0
declare i32 @llvm.amdgcn.raw.buffer.atomic.umax.i32(i32, <4 x i32>, i32, i32, i32) #0
declare i32 @llvm.amdgcn.raw.buffer.atomic.and.i32(i32, <4 x i32>, i32, i32, i32) #0
declare i32 @llvm.amdgcn.raw.buffer.atomic.or.i32(i32, <4 x i32>, i32, i32, i32) #0
declare i32 @llvm.amdgcn.raw.buffer.atomic.xor.i32(i32, <4 x i32>, i32, i32, i32) #0
declare i32 @llvm.amdgcn.raw.buffer.atomic.inc.i32(i32, <4 x i32>, i32, i32, i32) #0
declare i32 @llvm.amdgcn.raw.buffer.atomic.dec.i32(i32, <4 x i32>, i32, i32, i32) #0
declare i32 @llvm.amdgcn.raw.buffer.atomic.cmpswap.i32(i32, i32, <4 x i32>, i32, i32, i32) #0
declare i64 @llvm.amdgcn.raw.buffer.atomic.cmpswap.i64(i64, i64, <4 x i32>, i32, i32, i32) #0
attributes #0 = { nounwind }
|