1 ; RUN: opt -S -slp-vectorizer -slp-threshold=-10000 < %s | FileCheck %s
2 ; RUN: opt -S -slp-vectorizer -slp-threshold=0 < %s | FileCheck %s -check-prefix=ZEROTHRESH
3 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-n8:16:32:64-S128"
5 target triple = "x86_64-apple-macosx10.8.0"
7 define <4 x float> @simple_select(<4 x float> %a, <4 x float> %b, <4 x i32> %c) #0 {
8 ; CHECK-LABEL: @simple_select(
9 ; CHECK-NEXT: %1 = icmp ne <4 x i32> %c, zeroinitializer
10 ; CHECK-NEXT: select <4 x i1> %1, <4 x float> %a, <4 x float> %b
11 %c0 = extractelement <4 x i32> %c, i32 0
12 %c1 = extractelement <4 x i32> %c, i32 1
13 %c2 = extractelement <4 x i32> %c, i32 2
14 %c3 = extractelement <4 x i32> %c, i32 3
15 %a0 = extractelement <4 x float> %a, i32 0
16 %a1 = extractelement <4 x float> %a, i32 1
17 %a2 = extractelement <4 x float> %a, i32 2
18 %a3 = extractelement <4 x float> %a, i32 3
19 %b0 = extractelement <4 x float> %b, i32 0
20 %b1 = extractelement <4 x float> %b, i32 1
21 %b2 = extractelement <4 x float> %b, i32 2
22 %b3 = extractelement <4 x float> %b, i32 3
23 %cmp0 = icmp ne i32 %c0, 0
24 %cmp1 = icmp ne i32 %c1, 0
25 %cmp2 = icmp ne i32 %c2, 0
26 %cmp3 = icmp ne i32 %c3, 0
27 %s0 = select i1 %cmp0, float %a0, float %b0
28 %s1 = select i1 %cmp1, float %a1, float %b1
29 %s2 = select i1 %cmp2, float %a2, float %b2
30 %s3 = select i1 %cmp3, float %a3, float %b3
31 %ra = insertelement <4 x float> undef, float %s0, i32 0
32 %rb = insertelement <4 x float> %ra, float %s1, i32 1
33 %rc = insertelement <4 x float> %rb, float %s2, i32 2
34 %rd = insertelement <4 x float> %rc, float %s3, i32 3
38 declare void @llvm.assume(i1) nounwind
40 ; This entire tree is ephemeral, don't vectorize any of it.
41 define <4 x float> @simple_select_eph(<4 x float> %a, <4 x float> %b, <4 x i32> %c) #0 {
42 ; CHECK-LABEL: @simple_select_eph(
43 ; CHECK-NOT: icmp ne <4 x i32>
44 ; CHECK-NOT: select <4 x i1>
45 %c0 = extractelement <4 x i32> %c, i32 0
46 %c1 = extractelement <4 x i32> %c, i32 1
47 %c2 = extractelement <4 x i32> %c, i32 2
48 %c3 = extractelement <4 x i32> %c, i32 3
49 %a0 = extractelement <4 x float> %a, i32 0
50 %a1 = extractelement <4 x float> %a, i32 1
51 %a2 = extractelement <4 x float> %a, i32 2
52 %a3 = extractelement <4 x float> %a, i32 3
53 %b0 = extractelement <4 x float> %b, i32 0
54 %b1 = extractelement <4 x float> %b, i32 1
55 %b2 = extractelement <4 x float> %b, i32 2
56 %b3 = extractelement <4 x float> %b, i32 3
57 %cmp0 = icmp ne i32 %c0, 0
58 %cmp1 = icmp ne i32 %c1, 0
59 %cmp2 = icmp ne i32 %c2, 0
60 %cmp3 = icmp ne i32 %c3, 0
61 %s0 = select i1 %cmp0, float %a0, float %b0
62 %s1 = select i1 %cmp1, float %a1, float %b1
63 %s2 = select i1 %cmp2, float %a2, float %b2
64 %s3 = select i1 %cmp3, float %a3, float %b3
65 %ra = insertelement <4 x float> undef, float %s0, i32 0
66 %rb = insertelement <4 x float> %ra, float %s1, i32 1
67 %rc = insertelement <4 x float> %rb, float %s2, i32 2
68 %rd = insertelement <4 x float> %rc, float %s3, i32 3
69 %q0 = extractelement <4 x float> %rd, i32 0
70 %q1 = extractelement <4 x float> %rd, i32 1
71 %q2 = extractelement <4 x float> %rd, i32 2
72 %q3 = extractelement <4 x float> %rd, i32 3
73 %q4 = fadd float %q0, %q1
74 %q5 = fadd float %q2, %q3
75 %q6 = fadd float %q4, %q5
76 %qi = fcmp olt float %q6, %q5
77 call void @llvm.assume(i1 %qi)
81 ; Insert in an order different from the vector indices to make sure it
83 define <4 x float> @simple_select_insert_out_of_order(<4 x float> %a, <4 x float> %b, <4 x i32> %c) #0 {
84 ; CHECK-LABEL: @simple_select_insert_out_of_order(
85 ; CHECK-NEXT: %1 = icmp ne <4 x i32> %c, zeroinitializer
86 ; CHECK-NEXT: select <4 x i1> %1, <4 x float> %a, <4 x float> %b
87 %c0 = extractelement <4 x i32> %c, i32 0
88 %c1 = extractelement <4 x i32> %c, i32 1
89 %c2 = extractelement <4 x i32> %c, i32 2
90 %c3 = extractelement <4 x i32> %c, i32 3
91 %a0 = extractelement <4 x float> %a, i32 0
92 %a1 = extractelement <4 x float> %a, i32 1
93 %a2 = extractelement <4 x float> %a, i32 2
94 %a3 = extractelement <4 x float> %a, i32 3
95 %b0 = extractelement <4 x float> %b, i32 0
96 %b1 = extractelement <4 x float> %b, i32 1
97 %b2 = extractelement <4 x float> %b, i32 2
98 %b3 = extractelement <4 x float> %b, i32 3
99 %cmp0 = icmp ne i32 %c0, 0
100 %cmp1 = icmp ne i32 %c1, 0
101 %cmp2 = icmp ne i32 %c2, 0
102 %cmp3 = icmp ne i32 %c3, 0
103 %s0 = select i1 %cmp0, float %a0, float %b0
104 %s1 = select i1 %cmp1, float %a1, float %b1
105 %s2 = select i1 %cmp2, float %a2, float %b2
106 %s3 = select i1 %cmp3, float %a3, float %b3
107 %ra = insertelement <4 x float> undef, float %s0, i32 2
108 %rb = insertelement <4 x float> %ra, float %s1, i32 1
109 %rc = insertelement <4 x float> %rb, float %s2, i32 0
110 %rd = insertelement <4 x float> %rc, float %s3, i32 3
114 declare void @v4f32_user(<4 x float>) #0
115 declare void @f32_user(float) #0
117 ; Multiple users of the final constructed vector
118 define <4 x float> @simple_select_users(<4 x float> %a, <4 x float> %b, <4 x i32> %c) #0 {
119 ; CHECK-LABEL: @simple_select_users(
120 ; CHECK-NEXT: %1 = icmp ne <4 x i32> %c, zeroinitializer
121 ; CHECK-NEXT: select <4 x i1> %1, <4 x float> %a, <4 x float> %b
122 %c0 = extractelement <4 x i32> %c, i32 0
123 %c1 = extractelement <4 x i32> %c, i32 1
124 %c2 = extractelement <4 x i32> %c, i32 2
125 %c3 = extractelement <4 x i32> %c, i32 3
126 %a0 = extractelement <4 x float> %a, i32 0
127 %a1 = extractelement <4 x float> %a, i32 1
128 %a2 = extractelement <4 x float> %a, i32 2
129 %a3 = extractelement <4 x float> %a, i32 3
130 %b0 = extractelement <4 x float> %b, i32 0
131 %b1 = extractelement <4 x float> %b, i32 1
132 %b2 = extractelement <4 x float> %b, i32 2
133 %b3 = extractelement <4 x float> %b, i32 3
134 %cmp0 = icmp ne i32 %c0, 0
135 %cmp1 = icmp ne i32 %c1, 0
136 %cmp2 = icmp ne i32 %c2, 0
137 %cmp3 = icmp ne i32 %c3, 0
138 %s0 = select i1 %cmp0, float %a0, float %b0
139 %s1 = select i1 %cmp1, float %a1, float %b1
140 %s2 = select i1 %cmp2, float %a2, float %b2
141 %s3 = select i1 %cmp3, float %a3, float %b3
142 %ra = insertelement <4 x float> undef, float %s0, i32 0
143 %rb = insertelement <4 x float> %ra, float %s1, i32 1
144 %rc = insertelement <4 x float> %rb, float %s2, i32 2
145 %rd = insertelement <4 x float> %rc, float %s3, i32 3
146 call void @v4f32_user(<4 x float> %rd) #0
150 ; Unused insertelement
151 define <4 x float> @simple_select_no_users(<4 x float> %a, <4 x float> %b, <4 x i32> %c) #0 {
152 ; CHECK-LABEL: @simple_select_no_users(
153 ; CHECK-NOT: icmp ne <4 x i32>
154 ; CHECK-NOT: select <4 x i1>
155 %c0 = extractelement <4 x i32> %c, i32 0
156 %c1 = extractelement <4 x i32> %c, i32 1
157 %c2 = extractelement <4 x i32> %c, i32 2
158 %c3 = extractelement <4 x i32> %c, i32 3
159 %a0 = extractelement <4 x float> %a, i32 0
160 %a1 = extractelement <4 x float> %a, i32 1
161 %a2 = extractelement <4 x float> %a, i32 2
162 %a3 = extractelement <4 x float> %a, i32 3
163 %b0 = extractelement <4 x float> %b, i32 0
164 %b1 = extractelement <4 x float> %b, i32 1
165 %b2 = extractelement <4 x float> %b, i32 2
166 %b3 = extractelement <4 x float> %b, i32 3
167 %cmp0 = icmp ne i32 %c0, 0
168 %cmp1 = icmp ne i32 %c1, 0
169 %cmp2 = icmp ne i32 %c2, 0
170 %cmp3 = icmp ne i32 %c3, 0
171 %s0 = select i1 %cmp0, float %a0, float %b0
172 %s1 = select i1 %cmp1, float %a1, float %b1
173 %s2 = select i1 %cmp2, float %a2, float %b2
174 %s3 = select i1 %cmp3, float %a3, float %b3
175 %ra = insertelement <4 x float> undef, float %s0, i32 0
176 %rb = insertelement <4 x float> %ra, float %s1, i32 1
177 %rc = insertelement <4 x float> undef, float %s2, i32 2
178 %rd = insertelement <4 x float> %rc, float %s3, i32 3
182 ; Make sure infinite loop doesn't happen which I ran into when trying
183 ; to do this backwards this backwards
184 define <4 x i32> @reconstruct(<4 x i32> %c) #0 {
185 ; CHECK-LABEL: @reconstruct(
186 %c0 = extractelement <4 x i32> %c, i32 0
187 %c1 = extractelement <4 x i32> %c, i32 1
188 %c2 = extractelement <4 x i32> %c, i32 2
189 %c3 = extractelement <4 x i32> %c, i32 3
190 %ra = insertelement <4 x i32> undef, i32 %c0, i32 0
191 %rb = insertelement <4 x i32> %ra, i32 %c1, i32 1
192 %rc = insertelement <4 x i32> %rb, i32 %c2, i32 2
193 %rd = insertelement <4 x i32> %rc, i32 %c3, i32 3
197 define <2 x float> @simple_select_v2(<2 x float> %a, <2 x float> %b, <2 x i32> %c) #0 {
198 ; CHECK-LABEL: @simple_select_v2(
199 ; CHECK: icmp ne <2 x i32>
200 ; CHECK: select <2 x i1>
201 %c0 = extractelement <2 x i32> %c, i32 0
202 %c1 = extractelement <2 x i32> %c, i32 1
203 %a0 = extractelement <2 x float> %a, i32 0
204 %a1 = extractelement <2 x float> %a, i32 1
205 %b0 = extractelement <2 x float> %b, i32 0
206 %b1 = extractelement <2 x float> %b, i32 1
207 %cmp0 = icmp ne i32 %c0, 0
208 %cmp1 = icmp ne i32 %c1, 0
209 %s0 = select i1 %cmp0, float %a0, float %b0
210 %s1 = select i1 %cmp1, float %a1, float %b1
211 %ra = insertelement <2 x float> undef, float %s0, i32 0
212 %rb = insertelement <2 x float> %ra, float %s1, i32 1
216 ; Make sure when we construct partial vectors, we don't keep
217 ; re-visiting the insertelement chains starting with undef
218 ; (low cost threshold needed to force this to happen)
219 define <4 x float> @simple_select_partial_vector(<4 x float> %a, <4 x float> %b, <4 x i32> %c) #0 {
220 %c0 = extractelement <4 x i32> %c, i32 0
221 %c1 = extractelement <4 x i32> %c, i32 1
222 %a0 = extractelement <4 x float> %a, i32 0
223 %a1 = extractelement <4 x float> %a, i32 1
224 %b0 = extractelement <4 x float> %b, i32 0
225 %b1 = extractelement <4 x float> %b, i32 1
226 %1 = insertelement <2 x i32> undef, i32 %c0, i32 0
227 %2 = insertelement <2 x i32> %1, i32 %c1, i32 1
228 %3 = icmp ne <2 x i32> %2, zeroinitializer
229 %4 = insertelement <2 x float> undef, float %a0, i32 0
230 %5 = insertelement <2 x float> %4, float %a1, i32 1
231 %6 = insertelement <2 x float> undef, float %b0, i32 0
232 %7 = insertelement <2 x float> %6, float %b1, i32 1
233 %8 = select <2 x i1> %3, <2 x float> %5, <2 x float> %7
234 %9 = extractelement <2 x float> %8, i32 0
235 %ra = insertelement <4 x float> undef, float %9, i32 0
236 %10 = extractelement <2 x float> %8, i32 1
237 %rb = insertelement <4 x float> %ra, float %10, i32 1
241 ; Make sure that vectorization happens even if insertelements operations
242 ; must be rescheduled. The case here is from compiling Julia.
243 define <4 x float> @reschedule_extract(<4 x float> %a, <4 x float> %b) {
244 ; CHECK-LABEL: @reschedule_extract(
245 ; CHECK: %1 = fadd <4 x float> %a, %b
246 %a0 = extractelement <4 x float> %a, i32 0
247 %b0 = extractelement <4 x float> %b, i32 0
248 %c0 = fadd float %a0, %b0
249 %v0 = insertelement <4 x float> undef, float %c0, i32 0
250 %a1 = extractelement <4 x float> %a, i32 1
251 %b1 = extractelement <4 x float> %b, i32 1
252 %c1 = fadd float %a1, %b1
253 %v1 = insertelement <4 x float> %v0, float %c1, i32 1
254 %a2 = extractelement <4 x float> %a, i32 2
255 %b2 = extractelement <4 x float> %b, i32 2
256 %c2 = fadd float %a2, %b2
257 %v2 = insertelement <4 x float> %v1, float %c2, i32 2
258 %a3 = extractelement <4 x float> %a, i32 3
259 %b3 = extractelement <4 x float> %b, i32 3
260 %c3 = fadd float %a3, %b3
261 %v3 = insertelement <4 x float> %v2, float %c3, i32 3
265 ; Check that cost model for vectorization takes credit for
266 ; instructions that are erased.
267 define <4 x float> @take_credit(<4 x float> %a, <4 x float> %b) {
268 ; ZEROTHRESH-LABEL: @take_credit(
269 ; ZEROTHRESH: %1 = fadd <4 x float> %a, %b
270 %a0 = extractelement <4 x float> %a, i32 0
271 %b0 = extractelement <4 x float> %b, i32 0
272 %c0 = fadd float %a0, %b0
273 %a1 = extractelement <4 x float> %a, i32 1
274 %b1 = extractelement <4 x float> %b, i32 1
275 %c1 = fadd float %a1, %b1
276 %a2 = extractelement <4 x float> %a, i32 2
277 %b2 = extractelement <4 x float> %b, i32 2
278 %c2 = fadd float %a2, %b2
279 %a3 = extractelement <4 x float> %a, i32 3
280 %b3 = extractelement <4 x float> %b, i32 3
281 %c3 = fadd float %a3, %b3
282 %v0 = insertelement <4 x float> undef, float %c0, i32 0
283 %v1 = insertelement <4 x float> %v0, float %c1, i32 1
284 %v2 = insertelement <4 x float> %v1, float %c2, i32 2
285 %v3 = insertelement <4 x float> %v2, float %c3, i32 3
289 ; Make sure we handle multiple trees that feed one build vector correctly.
290 define <4 x double> @multi_tree(double %w, double %x, double %y, double %z) {
292 %t0 = fadd double %w , 0.000000e+00
293 %t1 = fadd double %x , 1.000000e+00
294 %t2 = fadd double %y , 2.000000e+00
295 %t3 = fadd double %z , 3.000000e+00
296 %t4 = fmul double %t0, 1.000000e+00
297 %i1 = insertelement <4 x double> undef, double %t4, i32 3
298 %t5 = fmul double %t1, 1.000000e+00
299 %i2 = insertelement <4 x double> %i1, double %t5, i32 2
300 %t6 = fmul double %t2, 1.000000e+00
301 %i3 = insertelement <4 x double> %i2, double %t6, i32 1
302 %t7 = fmul double %t3, 1.000000e+00
303 %i4 = insertelement <4 x double> %i3, double %t7, i32 0
306 ; CHECK-LABEL: @multi_tree
307 ; CHECK-DAG: %[[V0:.+]] = insertelement <2 x double> undef, double %w, i32 0
308 ; CHECK-DAG: %[[V1:.+]] = insertelement <2 x double> %[[V0]], double %x, i32 1
309 ; CHECK-DAG: %[[V2:.+]] = fadd <2 x double> %[[V1]], <double 0.000000e+00, double 1.000000e+00>
310 ; CHECK-DAG: %[[V3:.+]] = insertelement <2 x double> undef, double %y, i32 0
311 ; CHECK-DAG: %[[V4:.+]] = insertelement <2 x double> %[[V3]], double %z, i32 1
312 ; CHECK-DAG: %[[V5:.+]] = fadd <2 x double> %[[V4]], <double 2.000000e+00, double 3.000000e+00>
313 ; CHECK-DAG: %[[V6:.+]] = fmul <2 x double> <double 1.000000e+00, double 1.000000e+00>, %[[V2]]
314 ; CHECK-DAG: %[[V7:.+]] = extractelement <2 x double> %[[V6]], i32 0
315 ; CHECK-DAG: %[[I1:.+]] = insertelement <4 x double> undef, double %[[V7]], i32 3
316 ; CHECK-DAG: %[[V8:.+]] = extractelement <2 x double> %[[V6]], i32 1
317 ; CHECK-DAG: %[[I2:.+]] = insertelement <4 x double> %[[I1]], double %[[V8]], i32 2
318 ; CHECK-DAG: %[[V9:.+]] = fmul <2 x double> <double 1.000000e+00, double 1.000000e+00>, %[[V5]]
319 ; CHECK-DAG: %[[V10:.+]] = extractelement <2 x double> %[[V9]], i32 0
320 ; CHECK-DAG: %[[I3:.+]] = insertelement <4 x double> %i2, double %[[V10]], i32 1
321 ; CHECK-DAG: %[[V11:.+]] = extractelement <2 x double> %[[V9]], i32 1
322 ; CHECK-DAG: %[[I4:.+]] = insertelement <4 x double> %i3, double %[[V11]], i32 0
323 ; CHECK: ret <4 x double> %[[I4]]
325 attributes #0 = { nounwind ssp uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf"="true" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }