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
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
|
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=thumbv8.1m.main -mattr=+mve -run-pass=arm-low-overhead-loops %s -o - --verify-machineinstrs | FileCheck %s
# General test for vpsel exclusion from tail predication
--- |
define dso_local i32 @vpsel_after_vpt(i16* nocapture readonly %a, i16* nocapture readonly %b, i16* nocapture readonly %c, i16* nocapture readonly %d, i32 %N) local_unnamed_addr #0 {
entry:
%cmp9 = icmp eq i32 %N, 0
%tmp = add i32 %N, 3
%tmp1 = lshr i32 %tmp, 2
%tmp2 = shl nuw i32 %tmp1, 2
%tmp3 = add i32 %tmp2, -4
%tmp4 = lshr i32 %tmp3, 2
%tmp5 = add nuw nsw i32 %tmp4, 1
br i1 %cmp9, label %for.cond.cleanup, label %vector.ph
vector.ph: ; preds = %entry
%start = call i32 @llvm.start.loop.iterations.i32(i32 %tmp5)
br label %vector.body
vector.body: ; preds = %vector.body, %vector.ph
%lsr.iv1 = phi i32 [ %lsr.iv.next, %vector.body ], [ %start, %vector.ph ]
%lsr.iv.d = phi i16* [ %scevgep.d, %vector.body ], [ %d, %vector.ph ]
%lsr.iv.c = phi i16* [ %scevgep.c, %vector.body ], [ %c, %vector.ph ]
%lsr.iv18 = phi i16* [ %scevgep19, %vector.body ], [ %b, %vector.ph ]
%lsr.iv = phi i16* [ %scevgep, %vector.body ], [ %a, %vector.ph ]
%vec.phi = phi <4 x i32> [ zeroinitializer, %vector.ph ], [ %tmp14, %vector.body ]
%tmp7 = phi i32 [ %N, %vector.ph ], [ %tmp9, %vector.body ]
%lsr.iv17 = bitcast i16* %lsr.iv to <4 x i16>*
%lsr.iv1820 = bitcast i16* %lsr.iv18 to <4 x i16>*
%lsr.iv1820.c = bitcast i16* %lsr.iv.c to <4 x i16>*
%lsr.iv17.d = bitcast i16* %lsr.iv.d to <4 x i16>*
%tmp8 = call <4 x i1> @llvm.arm.mve.vctp32(i32 %tmp7)
%tmp9 = sub i32 %tmp7, 4
%wide.masked.load = call <4 x i16> @llvm.masked.load.v4i16.p0v4i16(<4 x i16>* %lsr.iv17, i32 2, <4 x i1> %tmp8, <4 x i16> undef)
%tmp10 = sext <4 x i16> %wide.masked.load to <4 x i32>
%wide.masked.load14 = call <4 x i16> @llvm.masked.load.v4i16.p0v4i16(<4 x i16>* %lsr.iv1820, i32 2, <4 x i1> %tmp8, <4 x i16> undef)
%tmp11 = sext <4 x i16> %wide.masked.load14 to <4 x i32>
%wide.masked.load.c = call <4 x i16> @llvm.masked.load.v4i16.p0v4i16(<4 x i16>* %lsr.iv1820.c, i32 2, <4 x i1> %tmp8, <4 x i16> undef)
%sext.load.c = sext <4 x i16> %wide.masked.load.c to <4 x i32>
%wide.masked.load.d = call <4 x i16> @llvm.masked.load.v4i16.p0v4i16(<4 x i16>* %lsr.iv17.d, i32 2, <4 x i1> %tmp8, <4 x i16> undef)
%sext.load.d = sext <4 x i16> %wide.masked.load.d to <4 x i32>
%tmp12 = mul nsw <4 x i32> %tmp11, %tmp10
%mul.2 = mul nsw <4 x i32> %sext.load.c, %sext.load.d
%tmp13 = add <4 x i32> %tmp12, %mul.2
%acc = add <4 x i32> %tmp13, %vec.phi
%tmp14 = select <4 x i1> %tmp8, <4 x i32> %acc, <4 x i32> %vec.phi
%scevgep = getelementptr i16, i16* %lsr.iv, i32 4
%scevgep19 = getelementptr i16, i16* %lsr.iv18, i32 4
%scevgep.c = getelementptr i16, i16* %lsr.iv.c, i32 4
%scevgep.d = getelementptr i16, i16* %lsr.iv.d, i32 4
%tmp15 = call i32 @llvm.loop.decrement.reg.i32.i32.i32(i32 %lsr.iv1, i32 1)
%tmp16 = icmp ne i32 %tmp15, 0
%lsr.iv.next = add nsw i32 %lsr.iv1, -1
br i1 %tmp16, label %vector.body, label %middle.block
middle.block: ; preds = %vector.body
%tmp17 = call i32 @llvm.vector.reduce.add.v4i32(<4 x i32> %tmp14)
br label %for.cond.cleanup
for.cond.cleanup: ; preds = %middle.block, %entry
%res.0.lcssa = phi i32 [ 0, %entry ], [ %tmp17, %middle.block ]
ret i32 %res.0.lcssa
}
declare <4 x i16> @llvm.masked.load.v4i16.p0v4i16(<4 x i16>*, i32 immarg, <4 x i1>, <4 x i16>) #1
declare i32 @llvm.vector.reduce.add.v4i32(<4 x i32>) #2
declare i32 @llvm.start.loop.iterations.i32(i32) #3
declare i32 @llvm.loop.decrement.reg.i32.i32.i32(i32, i32) #3
declare <4 x i1> @llvm.arm.mve.vctp32(i32) #4
...
---
name: vpsel_after_vpt
alignment: 2
exposesReturnsTwice: false
legalized: false
regBankSelected: false
selected: false
failedISel: false
tracksRegLiveness: true
hasWinCFI: false
registers: []
liveins:
- { reg: '$r0', virtual-reg: '' }
- { reg: '$r1', virtual-reg: '' }
- { reg: '$r2', virtual-reg: '' }
- { reg: '$r3', virtual-reg: '' }
frameInfo:
isFrameAddressTaken: false
isReturnAddressTaken: false
hasStackMap: false
hasPatchPoint: false
stackSize: 16
offsetAdjustment: 0
maxAlignment: 4
adjustsStack: false
hasCalls: false
stackProtector: ''
maxCallFrameSize: 0
cvBytesOfCalleeSavedRegisters: 0
hasOpaqueSPAdjustment: false
hasVAStart: false
hasMustTailInVarArgFunc: false
localFrameSize: 0
savePoint: ''
restorePoint: ''
fixedStack:
- { id: 0, type: default, offset: 0, size: 4, alignment: 8, stack-id: default,
isImmutable: true, isAliased: false, callee-saved-register: '', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
stack:
- { id: 0, name: '', type: spill-slot, offset: -4, size: 4, alignment: 4,
stack-id: default, callee-saved-register: '$lr', callee-saved-restored: false,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
- { id: 1, name: '', type: spill-slot, offset: -8, size: 4, alignment: 4,
stack-id: default, callee-saved-register: '$r7', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
- { id: 2, name: '', type: spill-slot, offset: -12, size: 4, alignment: 4,
stack-id: default, callee-saved-register: '$r5', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
- { id: 3, name: '', type: spill-slot, offset: -16, size: 4, alignment: 4,
stack-id: default, callee-saved-register: '$r4', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
callSites: []
constants: []
machineFunctionInfo: {}
body: |
; CHECK-LABEL: name: vpsel_after_vpt
; CHECK: bb.0.entry:
; CHECK: successors: %bb.4(0x30000000), %bb.1(0x50000000)
; CHECK: liveins: $lr, $r0, $r1, $r2, $r3, $r4, $r5, $r7
; CHECK: frame-setup tPUSH 14 /* CC::al */, $noreg, killed $r4, killed $r5, killed $r7, killed $lr, implicit-def $sp, implicit $sp
; CHECK: frame-setup CFI_INSTRUCTION def_cfa_offset 16
; CHECK: frame-setup CFI_INSTRUCTION offset $lr, -4
; CHECK: frame-setup CFI_INSTRUCTION offset $r7, -8
; CHECK: frame-setup CFI_INSTRUCTION offset $r5, -12
; CHECK: frame-setup CFI_INSTRUCTION offset $r4, -16
; CHECK: renamable $r12 = t2LDRi12 $sp, 16, 14 /* CC::al */, $noreg :: (load (s32) from %fixed-stack.0, align 8)
; CHECK: t2CMPri renamable $r12, 0, 14 /* CC::al */, $noreg, implicit-def $cpsr
; CHECK: tBcc %bb.4, 0 /* CC::eq */, killed $cpsr
; CHECK: bb.1.vector.ph:
; CHECK: successors: %bb.2(0x80000000)
; CHECK: liveins: $r0, $r1, $r2, $r3, $r12
; CHECK: renamable $lr = t2ADDri renamable $r12, 3, 14 /* CC::al */, $noreg, $noreg
; CHECK: renamable $r4, dead $cpsr = tMOVi8 1, 14 /* CC::al */, $noreg
; CHECK: renamable $lr = t2BICri killed renamable $lr, 3, 14 /* CC::al */, $noreg, $noreg
; CHECK: renamable $q0 = MVE_VMOVimmi32 0, 0, $noreg, $noreg, undef renamable $q0
; CHECK: renamable $lr = t2SUBri killed renamable $lr, 4, 14 /* CC::al */, $noreg, $noreg
; CHECK: renamable $r5 = nuw nsw t2ADDrs killed renamable $r4, killed renamable $lr, 19, 14 /* CC::al */, $noreg, $noreg
; CHECK: dead $lr = t2DLS renamable $r5
; CHECK: $r4 = tMOVr killed $r5, 14 /* CC::al */, $noreg
; CHECK: bb.2.vector.body:
; CHECK: successors: %bb.2(0x7c000000), %bb.3(0x04000000)
; CHECK: liveins: $q0, $r0, $r1, $r2, $r3, $r4, $r12
; CHECK: renamable $vpr = MVE_VCTP32 renamable $r12, 0, $noreg, $noreg
; CHECK: MVE_VPST 4, implicit $vpr
; CHECK: renamable $r3, renamable $q1 = MVE_VLDRHS32_post killed renamable $r3, 8, 1, renamable $vpr, $noreg :: (load (s64) from %ir.lsr.iv17.d, align 2)
; CHECK: renamable $r2, renamable $q2 = MVE_VLDRHS32_post killed renamable $r2, 8, 1, renamable $vpr, $noreg :: (load (s64) from %ir.lsr.iv1820.c, align 2)
; CHECK: renamable $q1 = nsw MVE_VMULi32 killed renamable $q2, killed renamable $q1, 0, $noreg, $noreg, undef renamable $q1
; CHECK: MVE_VPST 4, implicit $vpr
; CHECK: renamable $r0, renamable $q2 = MVE_VLDRHS32_post killed renamable $r0, 8, 1, renamable $vpr, $noreg :: (load (s64) from %ir.lsr.iv17, align 2)
; CHECK: renamable $r1, renamable $q3 = MVE_VLDRHS32_post killed renamable $r1, 8, 1, renamable $vpr, $noreg :: (load (s64) from %ir.lsr.iv1820, align 2)
; CHECK: renamable $q2 = nsw MVE_VMULi32 killed renamable $q3, killed renamable $q2, 0, $noreg, $noreg, undef renamable $q2
; CHECK: $lr = tMOVr $r4, 14 /* CC::al */, $noreg
; CHECK: renamable $q1 = MVE_VADDi32 killed renamable $q2, killed renamable $q1, 0, $noreg, $noreg, undef renamable $q1
; CHECK: renamable $r4, dead $cpsr = nsw tSUBi8 killed $r4, 1, 14 /* CC::al */, $noreg
; CHECK: renamable $q1 = MVE_VADDi32 killed renamable $q1, renamable $q0, 0, $noreg, $noreg, undef renamable $q1
; CHECK: renamable $r12 = t2SUBri killed renamable $r12, 4, 14 /* CC::al */, $noreg, $noreg
; CHECK: renamable $q0 = MVE_VPSEL killed renamable $q1, killed renamable $q0, 0, killed renamable $vpr, $noreg
; CHECK: dead $lr = t2LEUpdate killed renamable $lr, %bb.2
; CHECK: bb.3.middle.block:
; CHECK: liveins: $q0
; CHECK: renamable $r0 = MVE_VADDVu32no_acc killed renamable $q0, 0, $noreg, $noreg
; CHECK: tPOP_RET 14 /* CC::al */, $noreg, def $r4, def $r5, def $r7, def $pc, implicit killed $r0
; CHECK: bb.4:
; CHECK: renamable $r0, dead $cpsr = tMOVi8 0, 14 /* CC::al */, $noreg
; CHECK: tPOP_RET 14 /* CC::al */, $noreg, def $r4, def $r5, def $r7, def $pc, implicit killed $r0
bb.0.entry:
successors: %bb.4(0x30000000), %bb.1(0x50000000)
liveins: $r0, $r1, $r2, $r3, $r4, $r5, $r7, $lr
frame-setup tPUSH 14, $noreg, killed $r4, killed $r5, killed $r7, killed $lr, implicit-def $sp, implicit $sp
frame-setup CFI_INSTRUCTION def_cfa_offset 16
frame-setup CFI_INSTRUCTION offset $lr, -4
frame-setup CFI_INSTRUCTION offset $r7, -8
frame-setup CFI_INSTRUCTION offset $r5, -12
frame-setup CFI_INSTRUCTION offset $r4, -16
renamable $r12 = t2LDRi12 $sp, 16, 14, $noreg :: (load (s32) from %fixed-stack.0, align 8)
t2CMPri renamable $r12, 0, 14, $noreg, implicit-def $cpsr
tBcc %bb.4, 0, killed $cpsr
bb.1.vector.ph:
successors: %bb.2(0x80000000)
liveins: $r0, $r1, $r2, $r3, $r12
renamable $lr = t2ADDri renamable $r12, 3, 14, $noreg, $noreg
renamable $r4, dead $cpsr = tMOVi8 1, 14, $noreg
renamable $lr = t2BICri killed renamable $lr, 3, 14, $noreg, $noreg
renamable $q0 = MVE_VMOVimmi32 0, 0, $noreg, $noreg, undef renamable $q0
renamable $lr = t2SUBri killed renamable $lr, 4, 14, $noreg, $noreg
renamable $r5 = nuw nsw t2ADDrs killed renamable $r4, killed renamable $lr, 19, 14, $noreg, $noreg
$lr = t2DoLoopStart renamable $r5
$r4 = tMOVr killed $r5, 14, $noreg
bb.2.vector.body:
successors: %bb.2(0x7c000000), %bb.3(0x04000000)
liveins: $q0, $r0, $r1, $r2, $r3, $r4, $r12
renamable $vpr = MVE_VCTP32 renamable $r12, 0, $noreg, $noreg
MVE_VPST 4, implicit $vpr
renamable $r3, renamable $q1 = MVE_VLDRHS32_post killed renamable $r3, 8, 1, renamable $vpr, $noreg :: (load (s64) from %ir.lsr.iv17.d, align 2)
renamable $r2, renamable $q2 = MVE_VLDRHS32_post killed renamable $r2, 8, 1, renamable $vpr, $noreg :: (load (s64) from %ir.lsr.iv1820.c, align 2)
renamable $q1 = nsw MVE_VMULi32 killed renamable $q2, killed renamable $q1, 0, $noreg, $noreg, undef renamable $q1
MVE_VPST 4, implicit $vpr
renamable $r0, renamable $q2 = MVE_VLDRHS32_post killed renamable $r0, 8, 1, renamable $vpr, $noreg :: (load (s64) from %ir.lsr.iv17, align 2)
renamable $r1, renamable $q3 = MVE_VLDRHS32_post killed renamable $r1, 8, 1, renamable $vpr, $noreg :: (load (s64) from %ir.lsr.iv1820, align 2)
renamable $q2 = nsw MVE_VMULi32 killed renamable $q3, killed renamable $q2, 0, $noreg, $noreg, undef renamable $q2
$lr = tMOVr $r4, 14, $noreg
renamable $q1 = MVE_VADDi32 killed renamable $q2, killed renamable $q1, 0, $noreg, $noreg, undef renamable $q1
renamable $r4, dead $cpsr = nsw tSUBi8 killed $r4, 1, 14, $noreg
renamable $q1 = MVE_VADDi32 killed renamable $q1, renamable $q0, 0, $noreg, $noreg, undef renamable $q1
renamable $r12 = t2SUBri killed renamable $r12, 4, 14, $noreg, $noreg
renamable $q0 = MVE_VPSEL killed renamable $q1, killed renamable $q0, 0, killed renamable $vpr, $noreg
renamable $lr = t2LoopDec killed renamable $lr, 1
t2LoopEnd killed renamable $lr, %bb.2, implicit-def dead $cpsr
tB %bb.3, 14, $noreg
bb.3.middle.block:
liveins: $q0
renamable $r0 = MVE_VADDVu32no_acc killed renamable $q0, 0, $noreg, $noreg
tPOP_RET 14, $noreg, def $r4, def $r5, def $r7, def $pc, implicit killed $r0
bb.4:
renamable $r0, dead $cpsr = tMOVi8 0, 14, $noreg
tPOP_RET 14, $noreg, def $r4, def $r5, def $r7, def $pc, implicit killed $r0
...
|
