1 ; RUN: opt -mtriple=thumbv8.1m.main -mve-tail-predication -tail-predication=enabled -mattr=+mve %s -S -o - | FileCheck %s
3 ; CHECK-LABEL: reduction_i32
4 ; CHECK: phi i32 [ 0, %vector.ph ]
5 ; CHECK: phi <8 x i16> [ zeroinitializer, %vector.ph ]
7 ; CHECK: [[PHI:%[^ ]+]] = phi i32 [ %N, %vector.ph ], [ [[ELEMS:%[^ ]+]], %vector.body ]
8 ; CHECK: [[VCTP:%[^ ]+]] = call <8 x i1> @llvm.arm.mve.vctp16(i32 [[PHI]])
9 ; CHECK: [[ELEMS]] = sub i32 [[PHI]], 8
10 ; CHECK: call <8 x i16> @llvm.masked.load.v8i16.p0(ptr %tmp2, i32 4, <8 x i1> [[VCTP]], <8 x i16> undef)
11 ; CHECK: call <8 x i16> @llvm.masked.load.v8i16.p0(ptr %tmp5, i32 4, <8 x i1> [[VCTP]], <8 x i16> undef)
12 define i16 @reduction_i32(ptr nocapture readonly %A, ptr nocapture readonly %B, i32 %N) {
14 %cmp8 = icmp eq i32 %N, 0
15 br i1 %cmp8, label %for.cond.cleanup, label %vector.ph
19 %n.rnd.up = add i32 %tmp, 8
20 %n.vec = and i32 %n.rnd.up, -8
21 %0 = add i32 %n.vec, -8
24 %start = call i32 @llvm.start.loop.iterations.i32(i32 %2)
27 vector.body: ; preds = %vector.body, %vector.ph
28 %index = phi i32 [ 0, %vector.ph], [ %index.next, %vector.body ]
29 %vec.phi = phi <8 x i16> [ zeroinitializer, %vector.ph], [ %tmp8, %vector.body ]
30 %3 = phi i32 [ %start, %vector.ph], [ %4, %vector.body ]
31 %tmp2 = getelementptr inbounds i16, ptr %A, i32 %index
32 %tmp3 = call <8 x i1> @llvm.get.active.lane.mask.v8i1.i32(i32 %index, i32 %N)
33 %wide.masked.load = call <8 x i16> @llvm.masked.load.v8i16.p0(ptr %tmp2, i32 4, <8 x i1> %tmp3, <8 x i16> undef)
34 %tmp5 = getelementptr inbounds i16, ptr %B, i32 %index
35 %wide.masked.load3 = call <8 x i16> @llvm.masked.load.v8i16.p0(ptr %tmp5, i32 4, <8 x i1> %tmp3, <8 x i16> undef)
36 %tmp7 = add <8 x i16> %wide.masked.load, %vec.phi
37 %tmp8 = add <8 x i16> %tmp7, %wide.masked.load3
38 %index.next = add i32 %index, 8
39 %4 = call i32 @llvm.loop.decrement.reg.i32.i32.i32(i32 %3, i32 1)
40 %5 = icmp ne i32 %4, 0
41 br i1 %5, label %vector.body, label %middle.block
43 middle.block: ; preds = %vector.body
44 %vec.phi.lcssa = phi <8 x i16> [ %vec.phi, %vector.body ]
45 %.lcssa3 = phi <8 x i1> [ %tmp3, %vector.body ]
46 %.lcssa = phi <8 x i16> [ %tmp8, %vector.body ]
47 %tmp10 = select <8 x i1> %.lcssa3, <8 x i16> %.lcssa, <8 x i16> %vec.phi.lcssa
48 %rdx.shuf = shufflevector <8 x i16> %tmp10, <8 x i16> undef, <8 x i32> <i32 4, i32 5, i32 6, i32 7, i32 undef, i32 undef, i32 undef, i32 undef>
49 %bin.rdx = add <8 x i16> %rdx.shuf, %tmp10
50 %rdx.shuf4 = shufflevector <8 x i16> %bin.rdx, <8 x i16> undef, <8 x i32> <i32 2, i32 3, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
51 %bin.rdx5 = add <8 x i16> %rdx.shuf4, %bin.rdx
52 %rdx.shuf6 = shufflevector <8 x i16> %bin.rdx5, <8 x i16> undef, <8 x i32> <i32 1, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
53 %bin.rdx7 = add <8 x i16> %rdx.shuf6, %bin.rdx5
54 %tmp11 = extractelement <8 x i16> %bin.rdx7, i32 0
58 %res.0 = phi i16 [ 0, %entry ]
62 ; CHECK-LABEL: reduction_i32_with_scalar
64 ; CHECK: %index = phi i32 [ 0, %vector.ph ], [ %index.next, %vector.body ]
65 ; CHECK: %vec.phi = phi <8 x i16> [ zeroinitializer, %vector.ph ], [ %{{.*}}, %vector.body ]
66 ; CHECK: %{{.*}} = phi i32 [ %{{.*}}, %vector.ph ], [ %{{.*}}, %vector.body ]
67 ; CHECK: [[PHI:%[^ ]+]] = phi i32 [ %N, %vector.ph ], [ [[ELEMS:%[^ ]+]], %vector.body ]
68 ; CHECK: [[VCTP:%[^ ]+]] = call <8 x i1> @llvm.arm.mve.vctp16(i32 [[PHI]])
69 ; CHECK: [[ELEMS]] = sub i32 [[PHI]], 8
70 ; CHECK: call <8 x i16> @llvm.masked.load.v8i16.p0(ptr %tmp2, i32 4, <8 x i1> [[VCTP]], <8 x i16> undef)
71 define i16 @reduction_i32_with_scalar(ptr nocapture readonly %A, i16 %B, i32 %N) local_unnamed_addr {
73 %cmp8 = icmp eq i32 %N, 0
74 br i1 %cmp8, label %for.cond.cleanup, label %vector.ph
78 %n.rnd.up = add nuw nsw i32 %tmp, 8
79 %n.vec = and i32 %n.rnd.up, -8
80 %broadcast.splatinsert3 = insertelement <8 x i16> undef, i16 %B, i32 0
81 %broadcast.splat4 = shufflevector <8 x i16> %broadcast.splatinsert3, <8 x i16> undef, <8 x i32> zeroinitializer
82 %0 = add i32 %n.vec, -8
84 %2 = add nuw nsw i32 %1, 1
85 %start = call i32 @llvm.start.loop.iterations.i32(i32 %2)
88 vector.body: ; preds = %vector.body, %vector.ph
89 %index = phi i32 [ 0, %vector.ph], [ %index.next, %vector.body ]
90 %vec.phi = phi <8 x i16> [ zeroinitializer, %vector.ph], [ %tmp6, %vector.body ]
91 %3 = phi i32 [ %start, %vector.ph], [ %4, %vector.body ]
92 %tmp2 = getelementptr inbounds i16, ptr %A, i32 %index
93 %tmp3 = call <8 x i1> @llvm.get.active.lane.mask.v8i1.i32(i32 %index, i32 %N)
94 %wide.masked.load = call <8 x i16> @llvm.masked.load.v8i16.p0(ptr %tmp2, i32 4, <8 x i1> %tmp3, <8 x i16> undef)
95 %tmp5 = add <8 x i16> %vec.phi, %broadcast.splat4
96 %tmp6 = add <8 x i16> %tmp5, %wide.masked.load
97 %index.next = add nuw nsw i32 %index, 8
98 %4 = call i32 @llvm.loop.decrement.reg.i32.i32.i32(i32 %3, i32 1)
99 %5 = icmp ne i32 %4, 0
100 br i1 %5, label %vector.body, label %middle.block
102 middle.block: ; preds = %vector.body
103 %tmp8 = select <8 x i1> %tmp3, <8 x i16> %tmp6, <8 x i16> %vec.phi
104 %rdx.shuf = shufflevector <8 x i16> %tmp8, <8 x i16> undef, <8 x i32> <i32 4, i32 5, i32 6, i32 7, i32 undef, i32 undef, i32 undef, i32 undef>
105 %bin.rdx = add <8 x i16> %rdx.shuf, %tmp8
106 %rdx.shuf5 = shufflevector <8 x i16> %bin.rdx, <8 x i16> undef, <8 x i32> <i32 2, i32 3, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
107 %bin.rdx6 = add <8 x i16> %rdx.shuf5, %bin.rdx
108 %rdx.shuf7 = shufflevector <8 x i16> %bin.rdx6, <8 x i16> undef, <8 x i32> <i32 1, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
109 %bin.rdx8 = add <8 x i16> %rdx.shuf7, %bin.rdx6
110 %tmp9 = extractelement <8 x i16> %bin.rdx8, i32 0
114 %res.0 = phi i16 [ 0, %entry ]
118 ; The vector loop is not guarded with an entry check (N == 0). Check that
119 ; despite this we can still calculate a precise enough range so that the
120 ; the overflow checks for get.active.active.lane.mask don't reject
123 ; CHECK-LABEL: @reduction_not_guarded
125 ; CHECK: vector.body:
126 ; CHECK: @llvm.arm.mve.vctp
127 ; CHECK-NOT: @llvm.get.active.lane.mask.v8i1.i32
130 define i16 @reduction_not_guarded(ptr nocapture readonly %A, i16 %B, i32 %N) local_unnamed_addr {
132 %tmp = add i32 %N, -1
133 %n.rnd.up = add nuw nsw i32 %tmp, 8
134 %n.vec = and i32 %n.rnd.up, -8
135 %broadcast.splatinsert3 = insertelement <8 x i16> undef, i16 %B, i32 0
136 %broadcast.splat4 = shufflevector <8 x i16> %broadcast.splatinsert3, <8 x i16> undef, <8 x i32> zeroinitializer
137 %0 = add i32 %n.vec, -8
139 %2 = add nuw nsw i32 %1, 1
140 %start = call i32 @llvm.start.loop.iterations.i32(i32 %2)
141 br label %vector.body
143 vector.body: ; preds = %vector.body, %vector.ph
144 %index = phi i32 [ 0, %entry], [ %index.next, %vector.body ]
145 %vec.phi = phi <8 x i16> [ zeroinitializer, %entry], [ %tmp6, %vector.body ]
146 %3 = phi i32 [ %start, %entry ], [ %4, %vector.body ]
147 %tmp2 = getelementptr inbounds i16, ptr %A, i32 %index
148 %tmp3 = call <8 x i1> @llvm.get.active.lane.mask.v8i1.i32(i32 %index, i32 %N)
149 %wide.masked.load = call <8 x i16> @llvm.masked.load.v8i16.p0(ptr %tmp2, i32 4, <8 x i1> %tmp3, <8 x i16> undef)
150 %tmp5 = add <8 x i16> %vec.phi, %broadcast.splat4
151 %tmp6 = add <8 x i16> %tmp5, %wide.masked.load
152 %index.next = add nuw nsw i32 %index, 8
153 %4 = call i32 @llvm.loop.decrement.reg.i32.i32.i32(i32 %3, i32 1)
154 %5 = icmp ne i32 %4, 0
155 br i1 %5, label %vector.body, label %middle.block
157 middle.block: ; preds = %vector.body
158 %tmp8 = select <8 x i1> %tmp3, <8 x i16> %tmp6, <8 x i16> %vec.phi
159 %rdx.shuf = shufflevector <8 x i16> %tmp8, <8 x i16> undef, <8 x i32> <i32 4, i32 5, i32 6, i32 7, i32 undef, i32 undef, i32 undef, i32 undef>
160 %bin.rdx = add <8 x i16> %rdx.shuf, %tmp8
161 %rdx.shuf5 = shufflevector <8 x i16> %bin.rdx, <8 x i16> undef, <8 x i32> <i32 2, i32 3, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
162 %bin.rdx6 = add <8 x i16> %rdx.shuf5, %bin.rdx
163 %rdx.shuf7 = shufflevector <8 x i16> %bin.rdx6, <8 x i16> undef, <8 x i32> <i32 1, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
164 %bin.rdx8 = add <8 x i16> %rdx.shuf7, %bin.rdx6
165 %tmp9 = extractelement <8 x i16> %bin.rdx8, i32 0
169 ; CHECK-LABEL: @Correlation
170 ; CHECK: vector.body:
171 ; CHECK: @llvm.arm.mve.vctp
172 ; CHECK-NOT: %active.lane.mask = call <4 x i1> @llvm.get.active.lane.mask
174 define dso_local void @Correlation(ptr nocapture readonly %Input, ptr nocapture %Output, i16 signext %Size, i16 signext %N, i16 signext %Scale) local_unnamed_addr #0 {
176 %conv = sext i16 %N to i32
177 %cmp36 = icmp sgt i16 %N, 0
178 br i1 %cmp36, label %for.body.lr.ph, label %for.end17
181 %conv2 = sext i16 %Size to i32
182 %conv1032 = zext i16 %Scale to i32
183 %0 = add i32 %conv2, 3
187 %lsr.iv51 = phi i32 [ %lsr.iv.next, %for.end ], [ %0, %for.body.lr.ph ]
188 %lsr.iv46 = phi ptr [ %scevgep47, %for.end ], [ %Input, %for.body.lr.ph ]
189 %i.037 = phi i32 [ 0, %for.body.lr.ph ], [ %inc16, %for.end ]
190 %1 = mul nsw i32 %i.037, -1
193 %4 = shl nuw i32 %3, 2
196 %7 = add nuw nsw i32 %6, 1
197 %8 = sub i32 %conv2, %i.037
198 %cmp433 = icmp slt i32 %i.037, %conv2
199 br i1 %cmp433, label %vector.ph, label %for.end
201 vector.ph: ; preds = %for.body
202 %start = call i32 @llvm.start.loop.iterations.i32(i32 %7)
203 br label %vector.body
205 vector.body: ; preds = %vector.body, %vector.ph
206 %lsr.iv48 = phi ptr [ %scevgep49, %vector.body ], [ %lsr.iv46, %vector.ph ]
207 %lsr.iv = phi ptr [ %scevgep, %vector.body ], [ %Input, %vector.ph ]
208 %index = phi i32 [ 0, %vector.ph ], [ %index.next, %vector.body ]
209 %vec.phi = phi <4 x i32> [ zeroinitializer, %vector.ph ], [ %16, %vector.body ]
210 %9 = phi i32 [ %start, %vector.ph ], [ %17, %vector.body ]
211 %active.lane.mask = call <4 x i1> @llvm.get.active.lane.mask.v4i1.i32(i32 %index, i32 %8)
212 %wide.masked.load = call <4 x i16> @llvm.masked.load.v4i16.p0(ptr %lsr.iv, i32 2, <4 x i1> %active.lane.mask, <4 x i16> undef)
213 %10 = sext <4 x i16> %wide.masked.load to <4 x i32>
214 %wide.masked.load42 = call <4 x i16> @llvm.masked.load.v4i16.p0(ptr %lsr.iv48, i32 2, <4 x i1> %active.lane.mask, <4 x i16> undef)
215 %11 = sext <4 x i16> %wide.masked.load42 to <4 x i32>
216 %12 = mul nsw <4 x i32> %11, %10
217 %13 = insertelement <4 x i32> undef, i32 %conv1032, i32 0
218 %14 = shufflevector <4 x i32> %13, <4 x i32> undef, <4 x i32> zeroinitializer
219 %15 = ashr <4 x i32> %12, %14
220 %16 = add <4 x i32> %15, %vec.phi
221 %index.next = add i32 %index, 4
222 %scevgep = getelementptr i16, ptr %lsr.iv, i32 4
223 %scevgep49 = getelementptr i16, ptr %lsr.iv48, i32 4
224 %17 = call i32 @llvm.loop.decrement.reg.i32(i32 %9, i32 1)
225 %18 = icmp ne i32 %17, 0
226 br i1 %18, label %vector.body, label %middle.block
228 middle.block: ; preds = %vector.body
229 %19 = select <4 x i1> %active.lane.mask, <4 x i32> %16, <4 x i32> %vec.phi
230 %20 = call i32 @llvm.vector.reduce.add.v4i32(<4 x i32> %19)
233 for.end: ; preds = %middle.block, %for.body
234 %Sum.0.lcssa = phi i32 [ 0, %for.body ], [ %20, %middle.block ]
235 %21 = lshr i32 %Sum.0.lcssa, 16
236 %conv13 = trunc i32 %21 to i16
237 %arrayidx14 = getelementptr inbounds i16, ptr %Output, i32 %i.037
238 store i16 %conv13, ptr %arrayidx14, align 2
239 %inc16 = add nuw nsw i32 %i.037, 1
240 %scevgep47 = getelementptr i16, ptr %lsr.iv46, i32 1
241 %lsr.iv.next = add i32 %lsr.iv51, -1
242 %exitcond39 = icmp eq i32 %inc16, %conv
243 br i1 %exitcond39, label %for.end17, label %for.body
245 for.end17: ; preds = %for.end, %entry
249 declare <8 x i16> @llvm.masked.load.v8i16.p0(ptr, i32 immarg, <8 x i1>, <8 x i16>)
250 declare i32 @llvm.start.loop.iterations.i32(i32)
251 declare i32 @llvm.loop.decrement.reg.i32.i32.i32(i32, i32)
252 declare <4 x i1> @llvm.get.active.lane.mask.v4i1.i32(i32, i32)
253 declare <8 x i1> @llvm.get.active.lane.mask.v8i1.i32(i32, i32)
254 declare i32 @llvm.vector.reduce.add.v4i32(<4 x i32>)
255 declare i32 @llvm.loop.decrement.reg.i32(i32, i32)
256 declare <4 x i16> @llvm.masked.load.v4i16.p0(ptr, i32 immarg, <4 x i1>, <4 x i16>)