1 ; RUN: opt < %s -licm -loop-vectorize -force-vector-width=4 -dce -instcombine -licm -S | FileCheck %s
3 ; First licm pass is to hoist/sink invariant stores if possible. Today LICM does
4 ; not hoist/sink the invariant stores. Even if that changes, we should still
5 ; vectorize this loop in case licm is not run.
7 ; The next licm pass after vectorization is to hoist/sink loop invariant
9 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
11 ; all tests check that it is legal to vectorize the stores to invariant
15 ; CHECK-LABEL: inv_val_store_to_inv_address_with_reduction(
16 ; memory check is found.conflict = b[max(n-1,1)] > a && (i8* a)+1 > (i8* b)
17 ; CHECK: vector.memcheck:
18 ; CHECK: found.conflict
20 ; CHECK-LABEL: vector.body:
21 ; CHECK: %vec.phi = phi <4 x i32> [ zeroinitializer, %vector.ph ], [ [[ADD:%[a-zA-Z0-9.]+]], %vector.body ]
22 ; CHECK: %wide.load = load <4 x i32>
23 ; CHECK: [[ADD]] = add <4 x i32> %vec.phi, %wide.load
24 ; CHECK-NEXT: store i32 %ntrunc, i32* %a
25 ; CHECK-NEXT: %index.next = add nuw i64 %index, 4
26 ; CHECK-NEXT: icmp eq i64 %index.next, %n.vec
29 ; CHECK-LABEL: middle.block:
30 ; CHECK: call i32 @llvm.vector.reduce.add.v4i32(<4 x i32>
31 define i32 @inv_val_store_to_inv_address_with_reduction(i32* %a, i64 %n, i32* %b) {
33 %ntrunc = trunc i64 %n to i32
36 for.body: ; preds = %for.body, %entry
37 %i = phi i64 [ %i.next, %for.body ], [ 0, %entry ]
38 %i0 = phi i32 [ %i3, %for.body ], [ 0, %entry ]
39 %i1 = getelementptr inbounds i32, i32* %b, i64 %i
40 %i2 = load i32, i32* %i1, align 8
41 %i3 = add i32 %i0, %i2
42 store i32 %ntrunc, i32* %a
43 %i.next = add nuw nsw i64 %i, 1
44 %cond = icmp slt i64 %i.next, %n
45 br i1 %cond, label %for.body, label %for.end
47 for.end: ; preds = %for.body
48 %i4 = phi i32 [ %i3, %for.body ]
52 ; CHECK-LABEL: inv_val_store_to_inv_address(
53 ; CHECK-LABEL: vector.body:
54 ; CHECK: store i32 %ntrunc, i32* %a
55 ; CHECK: store <4 x i32>
56 ; CHECK-NEXT: %index.next = add nuw i64 %index, 4
57 ; CHECK-NEXT: icmp eq i64 %index.next, %n.vec
59 define void @inv_val_store_to_inv_address(i32* %a, i64 %n, i32* %b) {
61 %ntrunc = trunc i64 %n to i32
64 for.body: ; preds = %for.body, %entry
65 %i = phi i64 [ %i.next, %for.body ], [ 0, %entry ]
66 %i1 = getelementptr inbounds i32, i32* %b, i64 %i
67 %i2 = load i32, i32* %i1, align 8
68 store i32 %ntrunc, i32* %a
69 store i32 %ntrunc, i32* %i1
70 %i.next = add nuw nsw i64 %i, 1
71 %cond = icmp slt i64 %i.next, %n
72 br i1 %cond, label %for.body, label %for.end
74 for.end: ; preds = %for.body
79 ; Both of these tests below are handled as predicated stores.
82 ; if (b[i] == k) a = ntrunc
83 ; TODO: We can be better with the code gen for the first test and we can have
84 ; just one scalar store if vector.or.reduce(vector_cmp(b[i] == k)) is 1.
86 ; CHECK-LABEL:inv_val_store_to_inv_address_conditional(
87 ; CHECK-LABEL: vector.body:
88 ; CHECK: %wide.load = load <4 x i32>, <4 x i32>*
89 ; CHECK: [[CMP:%[a-zA-Z0-9.]+]] = icmp eq <4 x i32> %wide.load, %{{.*}}
90 ; CHECK: store <4 x i32>
91 ; CHECK-NEXT: [[EE:%[a-zA-Z0-9.]+]] = extractelement <4 x i1> [[CMP]], i32 0
92 ; CHECK-NEXT: br i1 [[EE]], label %pred.store.if, label %pred.store.continue
94 ; CHECK-LABEL: pred.store.if:
95 ; CHECK-NEXT: store i32 %ntrunc, i32* %a
96 ; CHECK-NEXT: br label %pred.store.continue
98 ; CHECK-LABEL: pred.store.continue:
99 ; CHECK-NEXT: [[EE1:%[a-zA-Z0-9.]+]] = extractelement <4 x i1> [[CMP]], i32 1
100 define void @inv_val_store_to_inv_address_conditional(i32* %a, i64 %n, i32* %b, i32 %k) {
102 %ntrunc = trunc i64 %n to i32
105 for.body: ; preds = %for.body, %entry
106 %i = phi i64 [ %i.next, %latch ], [ 0, %entry ]
107 %i1 = getelementptr inbounds i32, i32* %b, i64 %i
108 %i2 = load i32, i32* %i1, align 8
109 %cmp = icmp eq i32 %i2, %k
110 store i32 %ntrunc, i32* %i1
111 br i1 %cmp, label %cond_store, label %latch
114 store i32 %ntrunc, i32* %a
118 %i.next = add nuw nsw i64 %i, 1
119 %cond = icmp slt i64 %i.next, %n
120 br i1 %cond, label %for.body, label %for.end
122 for.end: ; preds = %for.body
129 ; TODO: We could vectorize this once we support multiple uniform stores to the
131 ; CHECK-LABEL:inv_val_store_to_inv_address_conditional_diff_values(
132 ; CHECK-NOT: load <4 x i32>
133 define void @inv_val_store_to_inv_address_conditional_diff_values(i32* %a, i64 %n, i32* %b, i32 %k) {
135 %ntrunc = trunc i64 %n to i32
138 for.body: ; preds = %for.body, %entry
139 %i = phi i64 [ %i.next, %latch ], [ 0, %entry ]
140 %i1 = getelementptr inbounds i32, i32* %b, i64 %i
141 %i2 = load i32, i32* %i1, align 8
142 %cmp = icmp eq i32 %i2, %k
143 store i32 %ntrunc, i32* %i1
144 br i1 %cmp, label %cond_store, label %cond_store_k
147 store i32 %ntrunc, i32* %a
151 store i32 %k, i32 * %a
155 %i.next = add nuw nsw i64 %i, 1
156 %cond = icmp slt i64 %i.next, %n
157 br i1 %cond, label %for.body, label %for.end
159 for.end: ; preds = %for.body
163 ; Multiple variant stores to the same uniform address
164 ; We do not vectorize such loops currently.
165 ; for(; i < itr; i++) {
166 ; for(; j < itr; j++) {
167 ; var1[i] = var2[j] + var1[i];
172 ; CHECK-LABEL: multiple_uniform_stores
173 ; CHECK-NOT: <4 x i32>
174 define i32 @multiple_uniform_stores(i32* nocapture %var1, i32* nocapture readonly %var2, i32 %itr) #0 {
176 %cmp20 = icmp eq i32 %itr, 0
177 br i1 %cmp20, label %for.end10, label %for.cond1.preheader
179 for.cond1.preheader: ; preds = %entry, %for.inc8
180 %indvars.iv23 = phi i64 [ %indvars.iv.next24, %for.inc8 ], [ 0, %entry ]
181 %j.022 = phi i32 [ %j.1.lcssa, %for.inc8 ], [ 0, %entry ]
182 %cmp218 = icmp ult i32 %j.022, %itr
183 br i1 %cmp218, label %for.body3.lr.ph, label %for.inc8
185 for.body3.lr.ph: ; preds = %for.cond1.preheader
186 %arrayidx5 = getelementptr inbounds i32, i32* %var1, i64 %indvars.iv23
187 %0 = zext i32 %j.022 to i64
190 for.body3: ; preds = %for.body3, %for.body3.lr.ph
191 %indvars.iv = phi i64 [ %0, %for.body3.lr.ph ], [ %indvars.iv.next, %for.body3 ]
192 %arrayidx = getelementptr inbounds i32, i32* %var2, i64 %indvars.iv
193 %1 = load i32, i32* %arrayidx, align 4
194 %2 = load i32, i32* %arrayidx5, align 4
195 %add = add nsw i32 %2, %1
196 store i32 %add, i32* %arrayidx5, align 4
197 %3 = load i32, i32* %arrayidx5, align 4
198 %4 = add nsw i32 %3, 1
199 store i32 %4, i32* %arrayidx5, align 4
200 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
201 %lftr.wideiv = trunc i64 %indvars.iv.next to i32
202 %exitcond = icmp eq i32 %lftr.wideiv, %itr
203 br i1 %exitcond, label %for.inc8, label %for.body3
205 for.inc8: ; preds = %for.body3, %for.cond1.preheader
206 %j.1.lcssa = phi i32 [ %j.022, %for.cond1.preheader ], [ %itr, %for.body3 ]
207 %indvars.iv.next24 = add nuw nsw i64 %indvars.iv23, 1
208 %lftr.wideiv25 = trunc i64 %indvars.iv.next24 to i32
209 %exitcond26 = icmp eq i32 %lftr.wideiv25, %itr
210 br i1 %exitcond26, label %for.end10, label %for.cond1.preheader
212 for.end10: ; preds = %for.inc8, %entry
216 ; second uniform store to the same address is conditional.
217 ; we do not vectorize this.
218 ; CHECK-LABEL: multiple_uniform_stores_conditional
219 ; CHECK-NOT: <4 x i32>
220 define i32 @multiple_uniform_stores_conditional(i32* nocapture %var1, i32* nocapture readonly %var2, i32 %itr) #0 {
222 %cmp20 = icmp eq i32 %itr, 0
223 br i1 %cmp20, label %for.end10, label %for.cond1.preheader
225 for.cond1.preheader: ; preds = %entry, %for.inc8
226 %indvars.iv23 = phi i64 [ %indvars.iv.next24, %for.inc8 ], [ 0, %entry ]
227 %j.022 = phi i32 [ %j.1.lcssa, %for.inc8 ], [ 0, %entry ]
228 %cmp218 = icmp ult i32 %j.022, %itr
229 br i1 %cmp218, label %for.body3.lr.ph, label %for.inc8
231 for.body3.lr.ph: ; preds = %for.cond1.preheader
232 %arrayidx5 = getelementptr inbounds i32, i32* %var1, i64 %indvars.iv23
233 %0 = zext i32 %j.022 to i64
236 for.body3: ; preds = %for.body3, %for.body3.lr.ph
237 %indvars.iv = phi i64 [ %0, %for.body3.lr.ph ], [ %indvars.iv.next, %latch ]
238 %arrayidx = getelementptr inbounds i32, i32* %var2, i64 %indvars.iv
239 %1 = load i32, i32* %arrayidx, align 4
240 %2 = load i32, i32* %arrayidx5, align 4
241 %add = add nsw i32 %2, %1
242 store i32 %add, i32* %arrayidx5, align 4
243 %3 = load i32, i32* %arrayidx5, align 4
244 %4 = add nsw i32 %3, 1
245 %5 = icmp ugt i32 %3, 42
246 br i1 %5, label %cond_store, label %latch
249 store i32 %4, i32* %arrayidx5, align 4
253 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
254 %lftr.wideiv = trunc i64 %indvars.iv.next to i32
255 %exitcond = icmp eq i32 %lftr.wideiv, %itr
256 br i1 %exitcond, label %for.inc8, label %for.body3
258 for.inc8: ; preds = %for.body3, %for.cond1.preheader
259 %j.1.lcssa = phi i32 [ %j.022, %for.cond1.preheader ], [ %itr, %latch ]
260 %indvars.iv.next24 = add nuw nsw i64 %indvars.iv23, 1
261 %lftr.wideiv25 = trunc i64 %indvars.iv.next24 to i32
262 %exitcond26 = icmp eq i32 %lftr.wideiv25, %itr
263 br i1 %exitcond26, label %for.end10, label %for.cond1.preheader
265 for.end10: ; preds = %for.inc8, %entry
269 ; cannot vectorize loop with unsafe dependency between uniform load (%i10) and store
270 ; (%i12) to the same address
272 ; Note: %i10 could be replaced by phi(%arg4, %i12), a potentially vectorizable
273 ; 1st-order-recurrence
274 define void @unsafe_dep_uniform_load_store(i32 %arg, i32 %arg1, i64 %arg2, i16* %arg3, i32 %arg4, i64 %arg5) {
275 ; CHECK-LABEL: unsafe_dep_uniform_load_store
276 ; CHECK-NOT: <4 x i32>
279 store i32 %arg4, i32* %i
280 %i6 = getelementptr inbounds i16, i16* %arg3, i64 %arg5
284 %i8 = phi i64 [ 0, %bb ], [ %i24, %bb7 ]
285 %i9 = phi i32 [ %arg1, %bb ], [ %i23, %bb7 ]
286 %i10 = load i32, i32* %i
287 %i11 = mul nsw i32 %i9, %i10
288 %i12 = srem i32 %i11, 65536
289 %i13 = add nsw i32 %i12, %i9
290 %i14 = trunc i32 %i13 to i16
291 %i15 = trunc i64 %i8 to i32
292 %i16 = add i32 %arg, %i15
293 %i17 = zext i32 %i16 to i64
294 %i18 = getelementptr inbounds i16, i16* %i6, i64 %i17
295 store i16 %i14, i16* %i18, align 2
296 %i19 = add i32 %i13, %i9
297 %i20 = trunc i32 %i19 to i16
298 %i21 = and i16 %i20, 255
299 %i22 = getelementptr inbounds i16, i16* %arg3, i64 %i17
300 store i16 %i21, i16* %i22, align 2
301 %i23 = add nsw i32 %i9, 1
302 %i24 = add nuw nsw i64 %i8, 1
303 %i25 = icmp eq i64 %i24, %arg2
304 store i32 %i12, i32* %i
305 br i1 %i25, label %bb26, label %bb7
311 ; Make sure any check-not directives are not triggered by function declarations.