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
| # RUN: llc -march=amdgcn -verify-machineinstrs -run-pass si-insert-waitcnts -o - %s | FileCheck %s
--- |
define amdgpu_ps <4 x float> @exp_done_waitcnt(<4 x i32> inreg, <4 x
i32> inreg, i32 inreg %w, float %v) #0 {
%a = load volatile float, float addrspace(1)* undef
%b = load volatile float, float addrspace(1)* undef
%c = load volatile float, float addrspace(1)* undef
%d = load volatile float, float addrspace(1)* undef
call void @llvm.amdgcn.exp.f32(i32 15, i32 1, float %a, float %b, float %c, float %d, i1 true, i1 false)
ret <4 x float> <float 5.000000e-01, float 1.000000e+00, float 2.000000e+00, float 4.000000e+00>
}
declare void @llvm.amdgcn.exp.f32(i32, i32, float, float, float, float, i1, i1) #0
attributes #0 = { nounwind }
...
---
# CHECK-LABEL: name: exp_done_waitcnt{{$}}
# CHECK: EXP_DONE
# CHECK-NEXT: S_WAITCNT 3855
# CHECK: $vgpr0 = V_MOV_B32
# CHECK: $vgpr1 = V_MOV_B32
# CHECK: $vgpr2 = V_MOV_B32
# CHECK: $vgpr3 = V_MOV_B32
name: exp_done_waitcnt
alignment: 1
exposesReturnsTwice: false
legalized: false
regBankSelected: false
selected: false
tracksRegLiveness: true
frameInfo:
isFrameAddressTaken: false
isReturnAddressTaken: false
hasStackMap: false
hasPatchPoint: false
stackSize: 0
offsetAdjustment: 0
maxAlignment: 0
adjustsStack: false
hasCalls: false
maxCallFrameSize: 0
hasOpaqueSPAdjustment: false
hasVAStart: false
hasMustTailInVarArgFunc: false
body: |
bb.0 (%ir-block.2):
$sgpr3 = S_MOV_B32 61440
$sgpr2 = S_MOV_B32 -1
$vgpr0 = BUFFER_LOAD_DWORD_OFFSET $sgpr0_sgpr1_sgpr2_sgpr3, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (volatile load 4 from `float addrspace(1)* undef`)
$vgpr1 = BUFFER_LOAD_DWORD_OFFSET $sgpr0_sgpr1_sgpr2_sgpr3, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (volatile load 4 from `float addrspace(1)* undef`)
$vgpr2 = BUFFER_LOAD_DWORD_OFFSET $sgpr0_sgpr1_sgpr2_sgpr3, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (volatile load 4 from `float addrspace(1)* undef`)
$vgpr3 = BUFFER_LOAD_DWORD_OFFSET killed $sgpr0_sgpr1_sgpr2_sgpr3, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (volatile load 4 from `float addrspace(1)* undef`)
EXP_DONE 0, killed $vgpr0, killed $vgpr1, killed $vgpr2, killed $vgpr3, -1, -1, 15, implicit $exec
$vgpr0 = V_MOV_B32_e32 1056964608, implicit $exec
$vgpr1 = V_MOV_B32_e32 1065353216, implicit $exec
$vgpr2 = V_MOV_B32_e32 1073741824, implicit $exec
$vgpr3 = V_MOV_B32_e32 1082130432, implicit $exec
SI_RETURN_TO_EPILOG killed $vgpr0, killed $vgpr1, killed $vgpr2, killed $vgpr3
...
|