1 # NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
2 # RUN: llc -mtriple=thumbv8.1m.main -mattr=+mve -run-pass=arm-low-overhead-loops %s -o - --verify-machineinstrs | FileCheck %s
4 # TODO: We should be able to handle the VCMP -> VPST -> VCMP -> VCTP case.
7 define dso_local arm_aapcs_vfpcc void @test(i32* noalias nocapture %a, i32* nocapture readonly %b, i32 %N) local_unnamed_addr #0 {
9 %cmp9 = icmp eq i32 %N, 0
11 %tmp1 = lshr i32 %tmp, 2
12 %tmp2 = shl nuw i32 %tmp1, 2
13 %tmp3 = add i32 %tmp2, -4
14 %tmp4 = lshr i32 %tmp3, 2
15 %tmp5 = add nuw nsw i32 %tmp4, 1
16 br i1 %cmp9, label %for.cond.cleanup, label %vector.ph
18 vector.ph: ; preds = %entry
20 %trip.count.minus.1 = add i32 %N, -1
21 %broadcast.splatinsert = insertelement <4 x i32> undef, i32 %trip.count.minus.1, i32 0
22 %broadcast.splat = shufflevector <4 x i32> %broadcast.splatinsert, <4 x i32> undef, <4 x i32> zeroinitializer
23 %start = call i32 @llvm.start.loop.iterations.i32(i32 %tmp5)
26 vector.body: ; preds = %vector.body, %vector.ph
27 %lsr.iv = phi i32 [ %lsr.iv.next, %vector.body ], [ %start, %vector.ph ]
28 %lsr.iv3 = phi i32* [ %scevgep4, %vector.body ], [ %b, %vector.ph ]
29 %lsr.iv1 = phi i32* [ %scevgep, %vector.body ], [ %a, %vector.ph ]
30 %vec.ind = phi <4 x i32> [ <i32 0, i32 1, i32 2, i32 3>, %vector.ph ], [ %vec.ind.next, %vector.body ]
31 %elts.rem = phi i32 [ %N, %vector.ph ], [ %elts.rem.next, %vector.body ]
32 %lsr.iv12 = bitcast i32* %lsr.iv1 to <4 x i32>*
33 %lsr.iv35 = bitcast i32* %lsr.iv3 to <4 x i32>*
34 %tmp7 = insertelement <4 x i32> undef, i32 %div, i32 0
35 %tmp8 = shufflevector <4 x i32> %tmp7, <4 x i32> undef, <4 x i32> zeroinitializer
36 %tmp9 = icmp ult <4 x i32> %vec.ind, %tmp8
37 %lower = icmp uge <4 x i32> %vec.ind, <i32 1, i32 1, i32 1, i32 1>
38 %tmp10 = call <4 x i1> @llvm.arm.mve.vctp32(i32 %elts.rem)
39 %tmp11 = and <4 x i1> %tmp9, %tmp10
40 %pred = and <4 x i1> %tmp11, %lower
41 %wide.masked.load = call <4 x i32> @llvm.masked.load.v4i32.p0v4i32(<4 x i32>* %lsr.iv35, i32 4, <4 x i1> %pred, <4 x i32> undef)
42 call void @llvm.masked.store.v4i32.p0v4i32(<4 x i32> %wide.masked.load, <4 x i32>* %lsr.iv12, i32 4, <4 x i1> %pred)
43 %vec.ind.next = add <4 x i32> %vec.ind, <i32 4, i32 4, i32 4, i32 4>
44 %elts.rem.next = sub i32 %elts.rem, 4
45 %scevgep = getelementptr i32, i32* %lsr.iv1, i32 4
46 %scevgep4 = getelementptr i32, i32* %lsr.iv3, i32 4
47 %tmp12 = call i32 @llvm.loop.decrement.reg.i32.i32.i32(i32 %lsr.iv, i32 1)
48 %tmp13 = icmp ne i32 %tmp12, 0
49 %lsr.iv.next = add nsw i32 %lsr.iv, -1
50 br i1 %tmp13, label %vector.body, label %for.cond.cleanup
52 for.cond.cleanup: ; preds = %vector.body, %entry
56 declare <4 x i32> @llvm.masked.load.v4i32.p0v4i32(<4 x i32>*, i32 immarg, <4 x i1>, <4 x i32>)
57 declare void @llvm.masked.store.v4i32.p0v4i32(<4 x i32>, <4 x i32>*, i32 immarg, <4 x i1>)
58 declare <4 x i1> @llvm.arm.mve.vctp32(i32)
59 declare i32 @llvm.start.loop.iterations.i32(i32)
60 declare i32 @llvm.loop.decrement.reg.i32.i32.i32(i32, i32)
66 tracksRegLiveness: true
69 - { reg: '$r0', virtual-reg: '' }
70 - { reg: '$r1', virtual-reg: '' }
71 - { reg: '$r2', virtual-reg: '' }
78 - { id: 0, name: '', type: spill-slot, offset: -4, size: 4, alignment: 4,
79 stack-id: default, callee-saved-register: '$lr', callee-saved-restored: false,
80 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
81 - { id: 1, name: '', type: spill-slot, offset: -8, size: 4, alignment: 4,
82 stack-id: default, callee-saved-register: '$r4', callee-saved-restored: true,
83 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
84 - { id: 2, name: '', type: spill-slot, offset: -16, size: 8, alignment: 8,
85 stack-id: default, callee-saved-register: '$d9', callee-saved-restored: true,
86 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
87 - { id: 3, name: '', type: spill-slot, offset: -24, size: 8, alignment: 8,
88 stack-id: default, callee-saved-register: '$d8', callee-saved-restored: true,
89 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
93 value: '<4 x i32> <i32 0, i32 1, i32 2, i32 3>'
95 isTargetSpecific: false
96 machineFunctionInfo: {}
98 ; CHECK-LABEL: name: test
100 ; CHECK: successors: %bb.3(0x30000000), %bb.1(0x50000000)
101 ; CHECK: liveins: $lr, $d8, $d9, $r0, $r1, $r2, $r4
102 ; CHECK: frame-setup tPUSH 14 /* CC::al */, $noreg, killed $r4, killed $lr, implicit-def $sp, implicit $sp
103 ; CHECK: frame-setup CFI_INSTRUCTION def_cfa_offset 8
104 ; CHECK: frame-setup CFI_INSTRUCTION offset $lr, -4
105 ; CHECK: frame-setup CFI_INSTRUCTION offset $r4, -8
106 ; CHECK: $sp = frame-setup VSTMDDB_UPD $sp, 14 /* CC::al */, $noreg, killed $d8, killed $d9
107 ; CHECK: frame-setup CFI_INSTRUCTION def_cfa_offset 24
108 ; CHECK: frame-setup CFI_INSTRUCTION offset $d9, -16
109 ; CHECK: frame-setup CFI_INSTRUCTION offset $d8, -24
110 ; CHECK: tCBZ $r2, %bb.3
111 ; CHECK: bb.1.vector.ph:
112 ; CHECK: successors: %bb.2(0x80000000)
113 ; CHECK: liveins: $r0, $r1, $r2
114 ; CHECK: renamable $r3, dead $cpsr = tADDi3 renamable $r2, 3, 14 /* CC::al */, $noreg
115 ; CHECK: renamable $q2 = MVE_VMOVimmi32 1, 0, $noreg, undef renamable $q2
116 ; CHECK: renamable $r3 = t2BICri killed renamable $r3, 3, 14 /* CC::al */, $noreg, $noreg
117 ; CHECK: renamable $q3 = MVE_VMOVimmi32 4, 0, $noreg, undef renamable $q3
118 ; CHECK: renamable $r12 = t2SUBri killed renamable $r3, 4, 14 /* CC::al */, $noreg, $noreg
119 ; CHECK: renamable $r3, dead $cpsr = tMOVi8 1, 14 /* CC::al */, $noreg
120 ; CHECK: renamable $r3 = nuw nsw t2ADDrs killed renamable $r3, killed renamable $r12, 19, 14 /* CC::al */, $noreg, $noreg
121 ; CHECK: dead $lr = t2DLS renamable $r3
122 ; CHECK: $r4 = tMOVr killed $r3, 14 /* CC::al */, $noreg
123 ; CHECK: renamable $r3 = tLEApcrel %const.0, 14 /* CC::al */, $noreg
124 ; CHECK: renamable $q0 = MVE_VLDRWU32 killed renamable $r3, 0, 0, $noreg :: (load (s128) from constant-pool)
125 ; CHECK: renamable $r3, dead $cpsr = tLSRri renamable $r2, 1, 14 /* CC::al */, $noreg
126 ; CHECK: renamable $q1 = MVE_VDUP32 killed renamable $r3, 0, $noreg, undef renamable $q1
127 ; CHECK: bb.2.vector.body:
128 ; CHECK: successors: %bb.2(0x7c000000), %bb.3(0x04000000)
129 ; CHECK: liveins: $q0, $q1, $q2, $q3, $r0, $r1, $r2, $r4
130 ; CHECK: $lr = tMOVr $r4, 14 /* CC::al */, $noreg
131 ; CHECK: renamable $r4, dead $cpsr = nsw tSUBi8 killed $r4, 1, 14 /* CC::al */, $noreg
132 ; CHECK: renamable $r2, dead $cpsr = tSUBi8 killed renamable $r2, 4, 14 /* CC::al */, $noreg
133 ; CHECK: renamable $vpr = MVE_VCMPu32 renamable $q1, renamable $q0, 8, 0, $noreg
134 ; CHECK: MVE_VPST 1, implicit $vpr
135 ; CHECK: renamable $vpr = MVE_VCMPu32 renamable $q0, renamable $q2, 2, 1, killed renamable $vpr
136 ; CHECK: renamable $vpr = MVE_VCTP32 renamable $r2, 1, killed renamable $vpr
137 ; CHECK: renamable $r1, renamable $q4 = MVE_VLDRWU32_post killed renamable $r1, 16, 1, renamable $vpr :: (load (s128) from %ir.lsr.iv35, align 4)
138 ; CHECK: renamable $r0 = MVE_VSTRWU32_post killed renamable $q4, killed renamable $r0, 16, 1, killed renamable $vpr :: (store (s128) into %ir.lsr.iv12, align 4)
139 ; CHECK: renamable $q0 = MVE_VADDi32 killed renamable $q0, renamable $q3, 0, $noreg, undef renamable $q0
140 ; CHECK: dead $lr = t2LEUpdate killed renamable $lr, %bb.2
141 ; CHECK: bb.3.for.cond.cleanup:
142 ; CHECK: $sp = frame-destroy VLDMDIA_UPD $sp, 14 /* CC::al */, $noreg, def $d8, def $d9
143 ; CHECK: frame-destroy tPOP_RET 14 /* CC::al */, $noreg, def $r4, def $pc
144 ; CHECK: bb.4 (align 16):
145 ; CHECK: CONSTPOOL_ENTRY 0, %const.0, 16
147 successors: %bb.3(0x30000000), %bb.1(0x50000000)
148 liveins: $r0, $r1, $r2, $r4, $lr, $d8, $d9
150 frame-setup tPUSH 14 /* CC::al */, $noreg, killed $r4, killed $lr, implicit-def $sp, implicit $sp
151 frame-setup CFI_INSTRUCTION def_cfa_offset 8
152 frame-setup CFI_INSTRUCTION offset $lr, -4
153 frame-setup CFI_INSTRUCTION offset $r4, -8
154 $sp = frame-setup VSTMDDB_UPD $sp, 14 /* CC::al */, $noreg, killed $d8, killed $d9
155 frame-setup CFI_INSTRUCTION def_cfa_offset 24
156 frame-setup CFI_INSTRUCTION offset $d9, -16
157 frame-setup CFI_INSTRUCTION offset $d8, -24
161 successors: %bb.2(0x80000000)
162 liveins: $r0, $r1, $r2
164 renamable $r3, dead $cpsr = tADDi3 renamable $r2, 3, 14 /* CC::al */, $noreg
165 renamable $q2 = MVE_VMOVimmi32 1, 0, $noreg, undef renamable $q2
166 renamable $r3 = t2BICri killed renamable $r3, 3, 14 /* CC::al */, $noreg, $noreg
167 renamable $q3 = MVE_VMOVimmi32 4, 0, $noreg, undef renamable $q3
168 renamable $r12 = t2SUBri killed renamable $r3, 4, 14 /* CC::al */, $noreg, $noreg
169 renamable $r3, dead $cpsr = tMOVi8 1, 14 /* CC::al */, $noreg
170 renamable $r3 = nuw nsw t2ADDrs killed renamable $r3, killed renamable $r12, 19, 14 /* CC::al */, $noreg, $noreg
171 $lr = t2DoLoopStart renamable $r3
172 $r4 = tMOVr killed $r3, 14 /* CC::al */, $noreg
173 renamable $r3 = tLEApcrel %const.0, 14 /* CC::al */, $noreg
174 renamable $q0 = MVE_VLDRWU32 killed renamable $r3, 0, 0, $noreg :: (load (s128) from constant-pool)
175 renamable $r3, dead $cpsr = tLSRri renamable $r2, 1, 14 /* CC::al */, $noreg
176 renamable $q1 = MVE_VDUP32 killed renamable $r3, 0, $noreg, undef renamable $q1
179 successors: %bb.2(0x7c000000), %bb.3(0x04000000)
180 liveins: $q0, $q1, $q2, $q3, $r0, $r1, $r2, $r4
182 $lr = tMOVr $r4, 14 /* CC::al */, $noreg
183 renamable $r4, dead $cpsr = nsw tSUBi8 killed $r4, 1, 14 /* CC::al */, $noreg
184 renamable $r2, dead $cpsr = tSUBi8 killed renamable $r2, 4, 14 /* CC::al */, $noreg
185 renamable $vpr = MVE_VCMPu32 renamable $q1, renamable $q0, 8, 0, $noreg
186 MVE_VPST 1, implicit $vpr
187 renamable $vpr = MVE_VCMPu32 renamable $q0, renamable $q2, 2, 1, killed renamable $vpr
188 renamable $vpr = MVE_VCTP32 renamable $r2, 1, killed renamable $vpr
189 renamable $r1, renamable $q4 = MVE_VLDRWU32_post killed renamable $r1, 16, 1, renamable $vpr :: (load (s128) from %ir.lsr.iv35, align 4)
190 renamable $r0 = MVE_VSTRWU32_post killed renamable $q4, killed renamable $r0, 16, 1, killed renamable $vpr :: (store (s128) into %ir.lsr.iv12, align 4)
191 renamable $q0 = MVE_VADDi32 killed renamable $q0, renamable $q3, 0, $noreg, undef renamable $q0
192 renamable $lr = t2LoopDec killed renamable $lr, 1
193 t2LoopEnd killed renamable $lr, %bb.2, implicit-def dead $cpsr
194 tB %bb.3, 14 /* CC::al */, $noreg
196 bb.3.for.cond.cleanup:
197 $sp = frame-destroy VLDMDIA_UPD $sp, 14 /* CC::al */, $noreg, def $d8, def $d9
198 frame-destroy tPOP_RET 14 /* CC::al */, $noreg, def $r4, def $pc
201 CONSTPOOL_ENTRY 0, %const.0, 16