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
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -instcombine %s | FileCheck %s
define <1 x i8> @test1(<8 x i8> %in) {
; CHECK-LABEL: @test1(
; CHECK-NEXT: [[VEC:%.*]] = shufflevector <8 x i8> %in, <8 x i8> undef, <1 x i32> <i32 5>
; CHECK-NEXT: ret <1 x i8> [[VEC]]
;
%val = extractelement <8 x i8> %in, i32 5
%vec = insertelement <1 x i8> undef, i8 %val, i32 0
ret <1 x i8> %vec
}
define <4 x i16> @test2(<8 x i16> %in, <8 x i16> %in2) {
; CHECK-LABEL: @test2(
; CHECK-NEXT: [[VEC_3:%.*]] = shufflevector <8 x i16> %in2, <8 x i16> %in, <4 x i32> <i32 11, i32 9, i32 0, i32 10>
; CHECK-NEXT: ret <4 x i16> [[VEC_3]]
;
%elt0 = extractelement <8 x i16> %in, i32 3
%elt1 = extractelement <8 x i16> %in, i32 1
%elt2 = extractelement <8 x i16> %in2, i32 0
%elt3 = extractelement <8 x i16> %in, i32 2
%vec.0 = insertelement <4 x i16> undef, i16 %elt0, i32 0
%vec.1 = insertelement <4 x i16> %vec.0, i16 %elt1, i32 1
%vec.2 = insertelement <4 x i16> %vec.1, i16 %elt2, i32 2
%vec.3 = insertelement <4 x i16> %vec.2, i16 %elt3, i32 3
ret <4 x i16> %vec.3
}
define <2 x i64> @test_vcopyq_lane_p64(<2 x i64> %a, <1 x i64> %b) {
; CHECK-LABEL: @test_vcopyq_lane_p64(
; CHECK-NEXT: [[TMP1:%.*]] = shufflevector <1 x i64> %b, <1 x i64> undef, <2 x i32> <i32 0, i32 undef>
; CHECK-NEXT: [[RES:%.*]] = shufflevector <2 x i64> %a, <2 x i64> [[TMP1]], <2 x i32> <i32 0, i32 2>
; CHECK-NEXT: ret <2 x i64> [[RES]]
;
%elt = extractelement <1 x i64> %b, i32 0
%res = insertelement <2 x i64> %a, i64 %elt, i32 1
ret <2 x i64> %res
}
; PR2109: https://llvm.org/bugs/show_bug.cgi?id=2109
define <4 x float> @widen_extract2(<4 x float> %ins, <2 x float> %ext) {
; CHECK-LABEL: @widen_extract2(
; CHECK-NEXT: [[TMP1:%.*]] = shufflevector <2 x float> %ext, <2 x float> undef, <4 x i32> <i32 0, i32 1, i32 undef, i32 undef>
; CHECK-NEXT: [[I2:%.*]] = shufflevector <4 x float> %ins, <4 x float> [[TMP1]], <4 x i32> <i32 0, i32 4, i32 2, i32 5>
; CHECK-NEXT: ret <4 x float> [[I2]]
;
%e1 = extractelement <2 x float> %ext, i32 0
%e2 = extractelement <2 x float> %ext, i32 1
%i1 = insertelement <4 x float> %ins, float %e1, i32 1
%i2 = insertelement <4 x float> %i1, float %e2, i32 3
ret <4 x float> %i2
}
define <4 x float> @widen_extract3(<4 x float> %ins, <3 x float> %ext) {
; CHECK-LABEL: @widen_extract3(
; CHECK-NEXT: [[TMP1:%.*]] = shufflevector <3 x float> %ext, <3 x float> undef, <4 x i32> <i32 0, i32 1, i32 2, i32 undef>
; CHECK-NEXT: [[I3:%.*]] = shufflevector <4 x float> %ins, <4 x float> [[TMP1]], <4 x i32> <i32 6, i32 5, i32 4, i32 3>
; CHECK-NEXT: ret <4 x float> [[I3]]
;
%e1 = extractelement <3 x float> %ext, i32 0
%e2 = extractelement <3 x float> %ext, i32 1
%e3 = extractelement <3 x float> %ext, i32 2
%i1 = insertelement <4 x float> %ins, float %e1, i32 2
%i2 = insertelement <4 x float> %i1, float %e2, i32 1
%i3 = insertelement <4 x float> %i2, float %e3, i32 0
ret <4 x float> %i3
}
define <8 x float> @widen_extract4(<8 x float> %ins, <2 x float> %ext) {
; CHECK-LABEL: @widen_extract4(
; CHECK-NEXT: [[TMP1:%.*]] = shufflevector <2 x float> %ext, <2 x float> undef, <8 x i32> <i32 0, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
; CHECK-NEXT: [[I1:%.*]] = shufflevector <8 x float> %ins, <8 x float> [[TMP1]], <8 x i32> <i32 0, i32 1, i32 8, i32 3, i32 4, i32 5, i32 6, i32 7>
; CHECK-NEXT: ret <8 x float> [[I1]]
;
%e1 = extractelement <2 x float> %ext, i32 0
%i1 = insertelement <8 x float> %ins, float %e1, i32 2
ret <8 x float> %i1
}
; PR26015: https://llvm.org/bugs/show_bug.cgi?id=26015
; The widening shuffle must be inserted before any uses.
define <8 x i16> @pr26015(<4 x i16> %t0) {
; CHECK-LABEL: @pr26015(
; CHECK-NEXT: [[TMP1:%.*]] = shufflevector <4 x i16> %t0, <4 x i16> undef, <8 x i32> <i32 undef, i32 undef, i32 2, i32 3, i32 undef, i32 undef, i32 undef, i32 undef>
; CHECK-NEXT: [[T5:%.*]] = shufflevector <8 x i16> <i16 0, i16 0, i16 0, i16 undef, i16 0, i16 0, i16 0, i16 undef>, <8 x i16> [[TMP1]], <8 x i32> <i32 0, i32 1, i32 2, i32 10, i32 4, i32 5, i32 6, i32 11>
; CHECK-NEXT: ret <8 x i16> [[T5]]
;
%t1 = extractelement <4 x i16> %t0, i32 2
%t2 = insertelement <8 x i16> zeroinitializer, i16 %t1, i32 3
%t3 = insertelement <8 x i16> %t2, i16 0, i32 6
%t4 = extractelement <4 x i16> %t0, i32 3
%t5 = insertelement <8 x i16> %t3, i16 %t4, i32 7
ret <8 x i16> %t5
}
; PR25999: https://llvm.org/bugs/show_bug.cgi?id=25999
; TODO: The widening shuffle could be inserted at the start of the function to allow the first extract to use it.
define <8 x i16> @pr25999(<4 x i16> %t0, i1 %b) {
; CHECK-LABEL: @pr25999(
; CHECK-NEXT: [[T1:%.*]] = extractelement <4 x i16> %t0, i32 2
; CHECK-NEXT: br i1 %b, label %if, label %end
; CHECK: if:
; CHECK-NEXT: [[TMP1:%.*]] = shufflevector <4 x i16> %t0, <4 x i16> undef, <8 x i32> <i32 undef, i32 undef, i32 undef, i32 3, i32 undef, i32 undef, i32 undef, i32 undef>
; CHECK-NEXT: [[T3:%.*]] = insertelement <8 x i16> <i16 0, i16 0, i16 0, i16 undef, i16 0, i16 0, i16 0, i16 undef>, i16 [[T1]], i32 3
; CHECK-NEXT: [[T5:%.*]] = shufflevector <8 x i16> [[T3]], <8 x i16> [[TMP1]], <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 11>
; CHECK-NEXT: ret <8 x i16> [[T5]]
; CHECK: end:
; CHECK-NEXT: [[A1:%.*]] = add i16 [[T1]], 4
; CHECK-NEXT: [[T6:%.*]] = insertelement <8 x i16> <i16 undef, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0>, i16 [[A1]], i32 0
; CHECK-NEXT: ret <8 x i16> [[T6]]
;
%t1 = extractelement <4 x i16> %t0, i32 2
br i1 %b, label %if, label %end
if:
%t2 = insertelement <8 x i16> zeroinitializer, i16 %t1, i32 3
%t3 = insertelement <8 x i16> %t2, i16 0, i32 6
%t4 = extractelement <4 x i16> %t0, i32 3
%t5 = insertelement <8 x i16> %t3, i16 %t4, i32 7
ret <8 x i16> %t5
end:
%a1 = add i16 %t1, 4
%t6 = insertelement <8 x i16> zeroinitializer, i16 %a1, i32 0
ret <8 x i16> %t6
}
; The widening shuffle must be inserted at a valid point (after the PHIs).
define <4 x double> @pr25999_phis1(i1 %c, <2 x double> %a, <4 x double> %b) {
; CHECK-LABEL: @pr25999_phis1(
; CHECK-NEXT: bb1:
; CHECK-NEXT: br i1 %c, label %bb2, label %bb3
; CHECK: bb2:
; CHECK-NEXT: [[R:%.*]] = call <2 x double> @dummy(<2 x double> %a)
; CHECK-NEXT: br label %bb3
; CHECK: bb3:
; CHECK-NEXT: [[TMP1:%.*]] = phi <2 x double> [ %a, %bb1 ], [ [[R]], %bb2 ]
; CHECK-NEXT: [[TMP2:%.*]] = phi <4 x double> [ %b, %bb1 ], [ zeroinitializer, %bb2 ]
; CHECK-NEXT: [[TMP0:%.*]] = shufflevector <2 x double> [[TMP1]], <2 x double> undef, <4 x i32> <i32 0, i32 undef, i32 undef, i32 undef>
; CHECK-NEXT: [[TMP4:%.*]] = shufflevector <4 x double> [[TMP2]], <4 x double> [[TMP0]], <4 x i32> <i32 0, i32 1, i32 4, i32 3>
; CHECK-NEXT: ret <4 x double> [[TMP4]]
;
bb1:
br i1 %c, label %bb2, label %bb3
bb2:
%r = call <2 x double> @dummy(<2 x double> %a)
br label %bb3
bb3:
%tmp1 = phi <2 x double> [ %a, %bb1 ], [ %r, %bb2 ]
%tmp2 = phi <4 x double> [ %b, %bb1 ], [ zeroinitializer, %bb2 ]
%tmp3 = extractelement <2 x double> %tmp1, i32 0
%tmp4 = insertelement <4 x double> %tmp2, double %tmp3, i32 2
ret <4 x double> %tmp4
}
declare <2 x double> @dummy(<2 x double>)
define <4 x double> @pr25999_phis2(i1 %c, <2 x double> %a, <4 x double> %b) {
; CHECK-LABEL: @pr25999_phis2(
; CHECK-NEXT: bb1:
; CHECK-NEXT: br i1 %c, label %bb2, label %bb3
; CHECK: bb2:
; CHECK-NEXT: [[R:%.*]] = call <2 x double> @dummy(<2 x double> %a)
; CHECK-NEXT: br label %bb3
; CHECK: bb3:
; CHECK-NEXT: [[TMP1:%.*]] = phi <2 x double> [ %a, %bb1 ], [ [[R]], %bb2 ]
; CHECK-NEXT: [[TMP2:%.*]] = phi <4 x double> [ %b, %bb1 ], [ zeroinitializer, %bb2 ]
; CHECK-NEXT: [[D:%.*]] = fadd <2 x double> [[TMP1]], [[TMP1]]
; CHECK-NEXT: [[TMP0:%.*]] = shufflevector <2 x double> [[D]], <2 x double> undef, <4 x i32> <i32 0, i32 undef, i32 undef, i32 undef>
; CHECK-NEXT: [[TMP4:%.*]] = shufflevector <4 x double> [[TMP2]], <4 x double> [[TMP0]], <4 x i32> <i32 0, i32 1, i32 4, i32 3>
; CHECK-NEXT: ret <4 x double> [[TMP4]]
;
bb1:
br i1 %c, label %bb2, label %bb3
bb2:
%r = call <2 x double> @dummy(<2 x double> %a)
br label %bb3
bb3:
%tmp1 = phi <2 x double> [ %a, %bb1 ], [ %r, %bb2 ]
%tmp2 = phi <4 x double> [ %b, %bb1 ], [ zeroinitializer, %bb2 ]
%d = fadd <2 x double> %tmp1, %tmp1
%tmp3 = extractelement <2 x double> %d, i32 0
%tmp4 = insertelement <4 x double> %tmp2, double %tmp3, i32 2
ret <4 x double> %tmp4
}
; PR26354: https://llvm.org/bugs/show_bug.cgi?id=26354
; Don't create a shufflevector if we know that we're not going to replace the insertelement.
define double @pr26354(<2 x double>* %tmp, i1 %B) {
; CHECK-LABEL: @pr26354(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[LD:%.*]] = load <2 x double>, <2 x double>* %tmp, align 16
; CHECK-NEXT: [[E1:%.*]] = extractelement <2 x double> [[LD]], i32 0
; CHECK-NEXT: br i1 %B, label %if, label %end
; CHECK: if:
; CHECK-NEXT: [[E2:%.*]] = extractelement <2 x double> [[LD]], i32 1
; CHECK-NEXT: [[I1:%.*]] = insertelement <4 x double> <double 0.000000e+00, double 0.000000e+00, double 0.000000e+00, double undef>, double [[E2]], i32 3
; CHECK-NEXT: br label %end
; CHECK: end:
; CHECK-NEXT: [[PH:%.*]] = phi <4 x double> [ undef, %entry ], [ [[I1]], %if ]
; CHECK-NEXT: [[E3:%.*]] = extractelement <4 x double> [[PH]], i32 1
; CHECK-NEXT: [[MU:%.*]] = fmul double [[E1]], [[E3]]
; CHECK-NEXT: ret double [[MU]]
;
entry:
%ld = load <2 x double>, <2 x double>* %tmp
%e1 = extractelement <2 x double> %ld, i32 0
%e2 = extractelement <2 x double> %ld, i32 1
br i1 %B, label %if, label %end
if:
%i1 = insertelement <4 x double> zeroinitializer, double %e2, i32 3
br label %end
end:
%ph = phi <4 x double> [ undef, %entry ], [ %i1, %if ]
%e3 = extractelement <4 x double> %ph, i32 1
%mu = fmul double %e1, %e3
ret double %mu
}
; https://llvm.org/bugs/show_bug.cgi?id=30923
; Delete the widening shuffle if we're not going to reduce the extract/insert to a shuffle.
define <4 x float> @PR30923(<2 x float> %x) {
; CHECK-LABEL: @PR30923(
; CHECK-NEXT: bb1:
; CHECK-NEXT: [[EXT1:%.*]] = extractelement <2 x float> %x, i32 1
; CHECK-NEXT: store float [[EXT1]], float* undef, align 4
; CHECK-NEXT: br label %bb2
; CHECK: bb2:
; CHECK-NEXT: [[EXT2:%.*]] = extractelement <2 x float> %x, i32 0
; CHECK-NEXT: [[INS1:%.*]] = insertelement <4 x float> <float 0.000000e+00, float 0.000000e+00, float undef, float undef>, float [[EXT2]], i32 2
; CHECK-NEXT: [[INS2:%.*]] = insertelement <4 x float> [[INS1]], float [[EXT1]], i32 3
; CHECK-NEXT: ret <4 x float> [[INS2]]
;
bb1:
%ext1 = extractelement <2 x float> %x, i32 1
store float %ext1, float* undef, align 4
br label %bb2
bb2:
%widen = shufflevector <2 x float> %x, <2 x float> undef, <4 x i32> <i32 0, i32 1, i32 undef, i32 undef>
%ext2 = extractelement <4 x float> %widen, i32 0
%ins1 = insertelement <4 x float> <float 0.0, float 0.0, float undef, float undef>, float %ext2, i32 2
%ins2 = insertelement <4 x float> %ins1, float %ext1, i32 3
ret <4 x float> %ins2
}
; Don't insert extractelements from the wider vector before the def of the index operand.
define <4 x i32> @extractelt_insertion(<2 x i32> %x, i32 %y) {
; CHECK-LABEL: @extractelt_insertion(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP0:%.*]] = shufflevector <2 x i32> [[X:%.*]], <2 x i32> undef, <4 x i32> <i32 0, i32 1, i32 undef, i32 undef>
; CHECK-NEXT: [[B:%.*]] = shufflevector <4 x i32> <i32 0, i32 0, i32 0, i32 undef>, <4 x i32> [[TMP0]], <4 x i32> <i32 0, i32 1, i32 2, i32 5>
; CHECK-NEXT: [[C:%.*]] = add i32 [[Y:%.*]], 3
; CHECK-NEXT: [[TMP1:%.*]] = extractelement <4 x i32> [[TMP0]], i32 [[C]]
; CHECK-NEXT: [[E:%.*]] = icmp eq i32 [[TMP1]], 0
; CHECK-NEXT: [[RET:%.*]] = select i1 [[E]], <4 x i32> [[B]], <4 x i32> zeroinitializer
; CHECK-NEXT: ret <4 x i32> [[RET]]
;
entry:
%a = extractelement <2 x i32> %x, i32 1
%b = insertelement <4 x i32> zeroinitializer, i32 %a, i64 3
%c = add i32 %y, 3
%d = extractelement <2 x i32> %x, i32 %c
%e = icmp eq i32 %d, 0
%ret = select i1 %e, <4 x i32> %b, <4 x i32> zeroinitializer
ret <4 x i32> %ret
}
|
