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
|
; RUN: opt -passes=loop-vectorize -force-vector-width=4 -enable-vplan-native-path -S %s | FileCheck %s
; Test that VPlan native path is able to widen select instruction in the
; innermost loop under different conditions when outer loop is marked to be
; vectorized. These conditions include following:
; * Inner and outer loop invariant select condition
; * Select condition depending on outer loop iteration variable.
; * Select condidition depending on inner loop iteration variable.
; * Select conditition depending on both outer and inner loop iteration
; variables.
define void @loop_invariant_select(ptr noalias nocapture %out, i1 %select, double %a, double %b) {
; CHECK-LABEL: @loop_invariant_select(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK: vector.ph:
; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <4 x double> poison, double [[A:%.*]], i64 0
; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <4 x double> [[BROADCAST_SPLATINSERT]], <4 x double> poison, <4 x i32> zeroinitializer
; CHECK-NEXT: [[BROADCAST_SPLATINSERT2:%.*]] = insertelement <4 x double> poison, double [[B:%.*]], i64 0
; CHECK-NEXT: [[BROADCAST_SPLAT3:%.*]] = shufflevector <4 x double> [[BROADCAST_SPLATINSERT2]], <4 x double> poison, <4 x i32> zeroinitializer
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[FOR1_LATCH4:%.*]] ]
; CHECK-NEXT: [[VEC_IND:%.*]] = phi <4 x i64> [ <i64 0, i64 1, i64 2, i64 3>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[FOR1_LATCH4]] ]
; CHECK-NEXT: [[TMP0:%.*]] = getelementptr inbounds double, ptr [[OUT:%.*]], <4 x i64> [[VEC_IND]]
; CHECK-NEXT: br label [[FOR2_HEADER1:%.*]]
; CHECK: for2.header1:
; CHECK-NEXT: [[VEC_PHI:%.*]] = phi <4 x i64> [ zeroinitializer, [[VECTOR_BODY]] ], [ [[TMP2:%.*]], [[FOR2_HEADER1]] ]
; CHECK-NEXT: [[TMP1:%.*]] = select i1 [[SELECT:%.*]], <4 x double> [[BROADCAST_SPLAT]], <4 x double> [[BROADCAST_SPLAT3]]
; CHECK-NEXT: call void @llvm.masked.scatter.v4f64.v4p0(<4 x double> [[TMP1]], <4 x ptr> [[TMP0]], i32 8, <4 x i1> <i1 true, i1 true, i1 true, i1 true>)
entry:
br label %for1.header
for1.header:
%indvar1 = phi i64 [ 0, %entry ], [ %indvar11, %for1.latch ]
%ptr = getelementptr inbounds double, ptr %out, i64 %indvar1
br label %for2.header
for2.header:
%indvar2 = phi i64 [ 0, %for1.header ], [ %indvar21, %for2.header ]
; Select condition is loop invariant for both inner and outer loop.
%select.b = select i1 %select, double %a, double %b
store double %select.b, ptr %ptr, align 8
%indvar21 = add nuw nsw i64 %indvar2, 1
%for2.cond = icmp eq i64 %indvar21, 10000
br i1 %for2.cond, label %for1.latch, label %for2.header
for1.latch:
%indvar11 = add nuw nsw i64 %indvar1, 1
%for1.cond = icmp eq i64 %indvar11, 1000
br i1 %for1.cond, label %exit, label %for1.header, !llvm.loop !0
exit:
ret void
}
define void @outer_loop_dependant_select(ptr noalias nocapture %out, double %a, double %b) {
; CHECK-LABEL: @outer_loop_dependant_select(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK: vector.ph:
; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <4 x double> poison, double [[A:%.*]], i64 0
; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <4 x double> [[BROADCAST_SPLATINSERT]], <4 x double> poison, <4 x i32> zeroinitializer
; CHECK-NEXT: [[BROADCAST_SPLATINSERT2:%.*]] = insertelement <4 x double> poison, double [[B:%.*]], i64 0
; CHECK-NEXT: [[BROADCAST_SPLAT3:%.*]] = shufflevector <4 x double> [[BROADCAST_SPLATINSERT2]], <4 x double> poison, <4 x i32> zeroinitializer
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[FOR1_LATCH4:%.*]] ]
; CHECK-NEXT: [[VEC_IND:%.*]] = phi <4 x i64> [ <i64 0, i64 1, i64 2, i64 3>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[FOR1_LATCH4]] ]
; CHECK-NEXT: [[TMP0:%.*]] = getelementptr inbounds double, ptr [[OUT:%.*]], <4 x i64> [[VEC_IND]]
; CHECK-NEXT: br label [[FOR2_HEADER1:%.*]]
; CHECK: for2.header1:
; CHECK-NEXT: [[VEC_PHI:%.*]] = phi <4 x i64> [ zeroinitializer, [[VECTOR_BODY]] ], [ [[TMP3:%.*]], [[FOR2_HEADER1]] ]
; CHECK-NEXT: [[TMP1:%.*]] = trunc <4 x i64> [[VEC_IND]] to <4 x i1>
; CHECK-NEXT: [[TMP2:%.*]] = select <4 x i1> [[TMP1]], <4 x double> [[BROADCAST_SPLAT]], <4 x double> [[BROADCAST_SPLAT3]]
; CHECK-NEXT: call void @llvm.masked.scatter.v4f64.v4p0(<4 x double> [[TMP2]], <4 x ptr> [[TMP0]], i32 8, <4 x i1> <i1 true, i1 true, i1 true, i1 true>)
entry:
br label %for1.header
for1.header:
%indvar1 = phi i64 [ 0, %entry ], [ %indvar11, %for1.latch ]
%ptr = getelementptr inbounds double, ptr %out, i64 %indvar1
br label %for2.header
for2.header:
%indvar2 = phi i64 [ 0, %for1.header ], [ %indvar21, %for2.header ]
%select = trunc i64 %indvar1 to i1
; Select condition only depends on outer loop iteration variable.
%select.b = select i1 %select, double %a, double %b
store double %select.b, ptr %ptr, align 8
%indvar21 = add nuw nsw i64 %indvar2, 1
%for2.cond = icmp eq i64 %indvar21, 10000
br i1 %for2.cond, label %for1.latch, label %for2.header
for1.latch:
%indvar11 = add nuw nsw i64 %indvar1, 1
%for1.cond = icmp eq i64 %indvar11, 1000
br i1 %for1.cond, label %exit, label %for1.header, !llvm.loop !0
exit:
ret void
}
define void @inner_loop_dependant_select(ptr noalias nocapture %out, double %a, double %b) {
; CHECK-LABEL: @inner_loop_dependant_select(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK: vector.ph:
; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <4 x double> poison, double [[A:%.*]], i64 0
; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <4 x double> [[BROADCAST_SPLATINSERT]], <4 x double> poison, <4 x i32> zeroinitializer
; CHECK-NEXT: [[BROADCAST_SPLATINSERT2:%.*]] = insertelement <4 x double> poison, double [[B:%.*]], i64 0
; CHECK-NEXT: [[BROADCAST_SPLAT3:%.*]] = shufflevector <4 x double> [[BROADCAST_SPLATINSERT2]], <4 x double> poison, <4 x i32> zeroinitializer
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[FOR1_LATCH4:%.*]] ]
; CHECK-NEXT: [[VEC_IND:%.*]] = phi <4 x i64> [ <i64 0, i64 1, i64 2, i64 3>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[FOR1_LATCH4]] ]
; CHECK-NEXT: [[TMP0:%.*]] = getelementptr inbounds double, ptr [[OUT:%.*]], <4 x i64> [[VEC_IND]]
; CHECK-NEXT: br label [[FOR2_HEADER1:%.*]]
; CHECK: for2.header1:
; CHECK-NEXT: [[VEC_PHI:%.*]] = phi <4 x i64> [ zeroinitializer, [[VECTOR_BODY]] ], [ [[TMP3:%.*]], [[FOR2_HEADER1]] ]
; CHECK-NEXT: [[TMP1:%.*]] = trunc <4 x i64> [[VEC_PHI]] to <4 x i1>
; CHECK-NEXT: [[TMP2:%.*]] = select <4 x i1> [[TMP1]], <4 x double> [[BROADCAST_SPLAT]], <4 x double> [[BROADCAST_SPLAT3]]
; CHECK-NEXT: call void @llvm.masked.scatter.v4f64.v4p0(<4 x double> [[TMP2]], <4 x ptr> [[TMP0]], i32 8, <4 x i1> <i1 true, i1 true, i1 true, i1 true>)
entry:
br label %for1.header
for1.header:
%indvar1 = phi i64 [ 0, %entry ], [ %indvar11, %for1.latch ]
%ptr = getelementptr inbounds double, ptr %out, i64 %indvar1
br label %for2.header
for2.header:
%indvar2 = phi i64 [ 0, %for1.header ], [ %indvar21, %for2.header ]
%select = trunc i64 %indvar2 to i1
; Select condition only depends on inner loop iteration variable.
%select.b = select i1 %select, double %a, double %b
store double %select.b, ptr %ptr, align 8
%indvar21 = add nuw nsw i64 %indvar2, 1
%for2.cond = icmp eq i64 %indvar21, 10000
br i1 %for2.cond, label %for1.latch, label %for2.header
for1.latch:
%indvar11 = add nuw nsw i64 %indvar1, 1
%for1.cond = icmp eq i64 %indvar11, 1000
br i1 %for1.cond, label %exit, label %for1.header, !llvm.loop !0
exit:
ret void
}
define void @outer_and_inner_loop_dependant_select(ptr noalias nocapture %out, double %a, double %b) {
; CHECK-LABEL: @outer_and_inner_loop_dependant_select(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK: vector.ph:
; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <4 x double> poison, double [[A:%.*]], i64 0
; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <4 x double> [[BROADCAST_SPLATINSERT]], <4 x double> poison, <4 x i32> zeroinitializer
; CHECK-NEXT: [[BROADCAST_SPLATINSERT2:%.*]] = insertelement <4 x double> poison, double [[B:%.*]], i64 0
; CHECK-NEXT: [[BROADCAST_SPLAT3:%.*]] = shufflevector <4 x double> [[BROADCAST_SPLATINSERT2]], <4 x double> poison, <4 x i32> zeroinitializer
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[FOR1_LATCH4:%.*]] ]
; CHECK-NEXT: [[VEC_IND:%.*]] = phi <4 x i64> [ <i64 0, i64 1, i64 2, i64 3>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[FOR1_LATCH4]] ]
; CHECK-NEXT: [[TMP0:%.*]] = getelementptr inbounds double, ptr [[OUT:%.*]], <4 x i64> [[VEC_IND]]
; CHECK-NEXT: br label [[FOR2_HEADER1:%.*]]
; CHECK: for2.header1:
; CHECK-NEXT: [[VEC_PHI:%.*]] = phi <4 x i64> [ zeroinitializer, [[VECTOR_BODY]] ], [ [[TMP4:%.*]], [[FOR2_HEADER1]] ]
; CHECK-NEXT: [[TMP1:%.*]] = add nuw nsw <4 x i64> [[VEC_IND]], [[VEC_PHI]]
; CHECK-NEXT: [[TMP2:%.*]] = trunc <4 x i64> [[TMP1]] to <4 x i1>
; CHECK-NEXT: [[TMP3:%.*]] = select <4 x i1> [[TMP2]], <4 x double> [[BROADCAST_SPLAT]], <4 x double> [[BROADCAST_SPLAT3]]
; CHECK-NEXT: call void @llvm.masked.scatter.v4f64.v4p0(<4 x double> [[TMP3]], <4 x ptr> [[TMP0]], i32 8, <4 x i1> <i1 true, i1 true, i1 true, i1 true>)
entry:
br label %for1.header
for1.header:
%indvar1 = phi i64 [ 0, %entry ], [ %indvar11, %for1.latch ]
%ptr = getelementptr inbounds double, ptr %out, i64 %indvar1
br label %for2.header
for2.header:
%indvar2 = phi i64 [ 0, %for1.header ], [ %indvar21, %for2.header ]
%sum = add nuw nsw i64 %indvar1, %indvar2
%select = trunc i64 %sum to i1
; Select condition depends on both inner and outer loop iteration variables.
%select.b = select i1 %select, double %a, double %b
store double %select.b, ptr %ptr, align 8
%indvar21 = add nuw nsw i64 %indvar2, 1
%for2.cond = icmp eq i64 %indvar21, 10000
br i1 %for2.cond, label %for1.latch, label %for2.header
for1.latch:
%indvar11 = add nuw nsw i64 %indvar1, 1
%for1.cond = icmp eq i64 %indvar11, 1000
br i1 %for1.cond, label %exit, label %for1.header, !llvm.loop !0
exit:
ret void
}
!0 = distinct !{!0, !1}
!1 = !{!"llvm.loop.vectorize.enable", i1 true}
|
