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
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --filter "br " --filter "^.*:" --filter "icmp" --version 5
; RUN: opt < %s -S -passes=loop-vectorize -force-vector-interleave=1 -force-vector-width=4 -enable-epilogue-vectorization \
; RUN: -epilogue-vectorization-force-VF=4 | FileCheck %s --check-prefix=MAINVF4IC1_EPI4
; RUN: opt < %s -S -passes=loop-vectorize -force-vector-interleave=2 -force-vector-width=4 -enable-epilogue-vectorization \
; RUN: -epilogue-vectorization-force-VF=4 | FileCheck %s --check-prefix=MAINVF4IC2_EPI4
; FIXME: For MAINVF4IC2_EPI4 the branch weights in the terminator of
; the VEC_EPILOG_ITER_CHECK block should be [4,4] since we process 8
; scalar iterations in the main loop, leaving the remaining count to
; be in the range [0,7]. That gives a 4:4 chance of skipping the
; vector epilogue. I believe the problem lies in
; EpilogueVectorizerEpilogueLoop::emitMinimumVectorEpilogueIterCountCheck
; where the main loop VF is set to the same value as the epilogue VF.
define void @f0(i8 %n, i32 %len, ptr %p) !prof !0 {
; MAINVF4IC1_EPI4-LABEL: define void @f0(
; MAINVF4IC1_EPI4-SAME: i8 [[N:%.*]], i32 [[LEN:%.*]], ptr [[P:%.*]]) !prof [[PROF0:![0-9]+]] {
; MAINVF4IC1_EPI4: [[ENTRY:.*:]]
; MAINVF4IC1_EPI4: [[CMP_ENTRY:%.*]] = icmp sgt i32 [[LEN]], 0
; MAINVF4IC1_EPI4: br i1 [[CMP_ENTRY]], label %[[ITER_CHECK:.*]], label %[[EXIT:.*]], !prof [[PROF1:![0-9]+]]
; MAINVF4IC1_EPI4: [[ITER_CHECK]]:
; MAINVF4IC1_EPI4: [[MIN_ITERS_CHECK:%.*]] = icmp ult i32 [[TMP0:%.*]], 4
; MAINVF4IC1_EPI4: br i1 [[MIN_ITERS_CHECK]], label %[[VEC_EPILOG_SCALAR_PH:.*]], label %[[VECTOR_SCEVCHECK:.*]], !prof [[PROF2:![0-9]+]]
; MAINVF4IC1_EPI4: [[VECTOR_SCEVCHECK]]:
; MAINVF4IC1_EPI4: [[TMP2:%.*]] = icmp slt i8 [[TMP1:%.*]], 0
; MAINVF4IC1_EPI4: [[TMP3:%.*]] = icmp ugt i32 [[LEN]], 255
; MAINVF4IC1_EPI4: br i1 [[TMP4:%.*]], label %[[VEC_EPILOG_SCALAR_PH]], label %[[VECTOR_MAIN_LOOP_ITER_CHECK:.*]], !prof [[PROF2]]
; MAINVF4IC1_EPI4: [[VECTOR_MAIN_LOOP_ITER_CHECK]]:
; MAINVF4IC1_EPI4: [[MIN_ITERS_CHECK1:%.*]] = icmp ult i32 [[TMP0]], 4
; MAINVF4IC1_EPI4: br i1 [[MIN_ITERS_CHECK1]], label %[[VEC_EPILOG_PH:.*]], label %[[VECTOR_PH:.*]], !prof [[PROF2]]
; MAINVF4IC1_EPI4: [[VECTOR_PH]]:
; MAINVF4IC1_EPI4: br label %[[VECTOR_BODY:.*]]
; MAINVF4IC1_EPI4: [[VECTOR_BODY]]:
; MAINVF4IC1_EPI4: [[TMP8:%.*]] = icmp eq i32 [[INDEX_NEXT:%.*]], [[N_VEC:%.*]]
; MAINVF4IC1_EPI4: br i1 [[TMP8]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !prof [[PROF3:![0-9]+]], !llvm.loop [[LOOP4:![0-9]+]]
; MAINVF4IC1_EPI4: [[MIDDLE_BLOCK]]:
; MAINVF4IC1_EPI4: [[CMP_N:%.*]] = icmp eq i32 [[TMP0]], [[N_VEC]]
; MAINVF4IC1_EPI4: br i1 [[CMP_N]], label %[[EXIT_LOOPEXIT:.*]], label %[[VEC_EPILOG_ITER_CHECK:.*]], !prof [[PROF7:![0-9]+]]
; MAINVF4IC1_EPI4: [[VEC_EPILOG_ITER_CHECK]]:
; MAINVF4IC1_EPI4: [[MIN_EPILOG_ITERS_CHECK:%.*]] = icmp ult i32 [[N_VEC_REMAINING:%.*]], 4
; MAINVF4IC1_EPI4: br i1 [[MIN_EPILOG_ITERS_CHECK]], label %[[VEC_EPILOG_SCALAR_PH]], label %[[VEC_EPILOG_PH]], !prof [[PROF8:![0-9]+]]
; MAINVF4IC1_EPI4: [[VEC_EPILOG_PH]]:
; MAINVF4IC1_EPI4: br label %[[VEC_EPILOG_VECTOR_BODY:.*]]
; MAINVF4IC1_EPI4: [[VEC_EPILOG_VECTOR_BODY]]:
; MAINVF4IC1_EPI4: [[TMP12:%.*]] = icmp eq i32 [[INDEX_NEXT6:%.*]], [[N_VEC3:%.*]]
; MAINVF4IC1_EPI4: br i1 [[TMP12]], label %[[VEC_EPILOG_MIDDLE_BLOCK:.*]], label %[[VEC_EPILOG_VECTOR_BODY]], !prof [[PROF9:![0-9]+]], !llvm.loop [[LOOP10:![0-9]+]]
; MAINVF4IC1_EPI4: [[VEC_EPILOG_MIDDLE_BLOCK]]:
; MAINVF4IC1_EPI4: [[CMP_N8:%.*]] = icmp eq i32 [[TMP0]], [[N_VEC3]]
; MAINVF4IC1_EPI4: br i1 [[CMP_N8]], label %[[EXIT_LOOPEXIT]], label %[[VEC_EPILOG_SCALAR_PH]], !prof [[PROF7]]
; MAINVF4IC1_EPI4: [[VEC_EPILOG_SCALAR_PH]]:
; MAINVF4IC1_EPI4: br label %[[LOOP:.*]]
; MAINVF4IC1_EPI4: [[LOOP]]:
; MAINVF4IC1_EPI4: [[CMP_LOOP:%.*]] = icmp ult i32 [[I32:%.*]], [[LEN]]
; MAINVF4IC1_EPI4: br i1 [[CMP_LOOP]], label %[[LOOP]], label %[[EXIT_LOOPEXIT]], !prof [[PROF11:![0-9]+]], !llvm.loop [[LOOP12:![0-9]+]]
; MAINVF4IC1_EPI4: [[EXIT_LOOPEXIT]]:
; MAINVF4IC1_EPI4: br label %[[EXIT]]
; MAINVF4IC1_EPI4: [[EXIT]]:
;
; MAINVF4IC2_EPI4-LABEL: define void @f0(
; MAINVF4IC2_EPI4-SAME: i8 [[N:%.*]], i32 [[LEN:%.*]], ptr [[P:%.*]]) !prof [[PROF0:![0-9]+]] {
; MAINVF4IC2_EPI4: [[ENTRY:.*:]]
; MAINVF4IC2_EPI4: [[CMP_ENTRY:%.*]] = icmp sgt i32 [[LEN]], 0
; MAINVF4IC2_EPI4: br i1 [[CMP_ENTRY]], label %[[ITER_CHECK:.*]], label %[[EXIT:.*]], !prof [[PROF1:![0-9]+]]
; MAINVF4IC2_EPI4: [[ITER_CHECK]]:
; MAINVF4IC2_EPI4: [[MIN_ITERS_CHECK:%.*]] = icmp ult i32 [[TMP0:%.*]], 4
; MAINVF4IC2_EPI4: br i1 [[MIN_ITERS_CHECK]], label %[[VEC_EPILOG_SCALAR_PH:.*]], label %[[VECTOR_SCEVCHECK:.*]], !prof [[PROF2:![0-9]+]]
; MAINVF4IC2_EPI4: [[VECTOR_SCEVCHECK]]:
; MAINVF4IC2_EPI4: [[TMP2:%.*]] = icmp slt i8 [[TMP1:%.*]], 0
; MAINVF4IC2_EPI4: [[TMP3:%.*]] = icmp ugt i32 [[LEN]], 255
; MAINVF4IC2_EPI4: br i1 [[TMP4:%.*]], label %[[VEC_EPILOG_SCALAR_PH]], label %[[VECTOR_MAIN_LOOP_ITER_CHECK:.*]], !prof [[PROF2]]
; MAINVF4IC2_EPI4: [[VECTOR_MAIN_LOOP_ITER_CHECK]]:
; MAINVF4IC2_EPI4: [[MIN_ITERS_CHECK1:%.*]] = icmp ult i32 [[TMP0]], 8
; MAINVF4IC2_EPI4: br i1 [[MIN_ITERS_CHECK1]], label %[[VEC_EPILOG_PH:.*]], label %[[VECTOR_PH:.*]], !prof [[PROF2]]
; MAINVF4IC2_EPI4: [[VECTOR_PH]]:
; MAINVF4IC2_EPI4: br label %[[VECTOR_BODY:.*]]
; MAINVF4IC2_EPI4: [[VECTOR_BODY]]:
; MAINVF4IC2_EPI4: [[TMP9:%.*]] = icmp eq i32 [[INDEX_NEXT:%.*]], [[N_VEC:%.*]]
; MAINVF4IC2_EPI4: br i1 [[TMP9]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !prof [[PROF3:![0-9]+]], !llvm.loop [[LOOP4:![0-9]+]]
; MAINVF4IC2_EPI4: [[MIDDLE_BLOCK]]:
; MAINVF4IC2_EPI4: [[CMP_N:%.*]] = icmp eq i32 [[TMP0]], [[N_VEC]]
; MAINVF4IC2_EPI4: br i1 [[CMP_N]], label %[[EXIT_LOOPEXIT:.*]], label %[[VEC_EPILOG_ITER_CHECK:.*]], !prof [[PROF7:![0-9]+]]
; MAINVF4IC2_EPI4: [[VEC_EPILOG_ITER_CHECK]]:
; MAINVF4IC2_EPI4: [[MIN_EPILOG_ITERS_CHECK:%.*]] = icmp ult i32 [[N_VEC_REMAINING:%.*]], 4
; MAINVF4IC2_EPI4: br i1 [[MIN_EPILOG_ITERS_CHECK]], label %[[VEC_EPILOG_SCALAR_PH]], label %[[VEC_EPILOG_PH]], !prof [[PROF8:![0-9]+]]
; MAINVF4IC2_EPI4: [[VEC_EPILOG_PH]]:
; MAINVF4IC2_EPI4: br label %[[VEC_EPILOG_VECTOR_BODY:.*]]
; MAINVF4IC2_EPI4: [[VEC_EPILOG_VECTOR_BODY]]:
; MAINVF4IC2_EPI4: [[TMP13:%.*]] = icmp eq i32 [[INDEX_NEXT6:%.*]], [[N_VEC3:%.*]]
; MAINVF4IC2_EPI4: br i1 [[TMP13]], label %[[VEC_EPILOG_MIDDLE_BLOCK:.*]], label %[[VEC_EPILOG_VECTOR_BODY]], !prof [[PROF9:![0-9]+]], !llvm.loop [[LOOP10:![0-9]+]]
; MAINVF4IC2_EPI4: [[VEC_EPILOG_MIDDLE_BLOCK]]:
; MAINVF4IC2_EPI4: [[CMP_N8:%.*]] = icmp eq i32 [[TMP0]], [[N_VEC3]]
; MAINVF4IC2_EPI4: br i1 [[CMP_N8]], label %[[EXIT_LOOPEXIT]], label %[[VEC_EPILOG_SCALAR_PH]], !prof [[PROF11:![0-9]+]]
; MAINVF4IC2_EPI4: [[VEC_EPILOG_SCALAR_PH]]:
; MAINVF4IC2_EPI4: br label %[[LOOP:.*]]
; MAINVF4IC2_EPI4: [[LOOP]]:
; MAINVF4IC2_EPI4: [[CMP_LOOP:%.*]] = icmp ult i32 [[I32:%.*]], [[LEN]]
; MAINVF4IC2_EPI4: br i1 [[CMP_LOOP]], label %[[LOOP]], label %[[EXIT_LOOPEXIT]], !prof [[PROF12:![0-9]+]], !llvm.loop [[LOOP13:![0-9]+]]
; MAINVF4IC2_EPI4: [[EXIT_LOOPEXIT]]:
; MAINVF4IC2_EPI4: br label %[[EXIT]]
; MAINVF4IC2_EPI4: [[EXIT]]:
;
entry:
%cmp.entry = icmp sgt i32 %len, 0
br i1 %cmp.entry, label %loop, label %exit, !prof !1
loop:
%i8 = phi i8 [0, %entry], [%i8.inc, %loop]
%i32 = phi i32 [0, %entry], [%i32.inc, %loop]
%ptr = getelementptr inbounds i32, ptr %p, i8 %i8
store i32 %i32, ptr %ptr
%i8.inc = add i8 %i8, 1
%i32.inc = add i32 %i32, 1
%cmp.loop = icmp ult i32 %i32, %len
br i1 %cmp.loop, label %loop, label %exit, !prof !2
exit:
ret void
}
!0 = !{!"function_entry_count", i64 13}
!1 = !{!"branch_weights", i32 12, i32 1}
!2 = !{!"branch_weights", i32 1234, i32 1}
;.
; MAINVF4IC1_EPI4: [[PROF0]] = !{!"function_entry_count", i64 13}
; MAINVF4IC1_EPI4: [[PROF1]] = !{!"branch_weights", i32 12, i32 1}
; MAINVF4IC1_EPI4: [[PROF2]] = !{!"branch_weights", i32 1, i32 127}
; MAINVF4IC1_EPI4: [[PROF3]] = !{!"branch_weights", i32 1, i32 307}
; MAINVF4IC1_EPI4: [[LOOP4]] = distinct !{[[LOOP4]], [[META5:![0-9]+]], [[META6:![0-9]+]]}
; MAINVF4IC1_EPI4: [[META5]] = !{!"llvm.loop.isvectorized", i32 1}
; MAINVF4IC1_EPI4: [[META6]] = !{!"llvm.loop.unroll.runtime.disable"}
; MAINVF4IC1_EPI4: [[PROF7]] = !{!"branch_weights", i32 1, i32 3}
; MAINVF4IC1_EPI4: [[PROF8]] = !{!"branch_weights", i32 4, i32 0}
; MAINVF4IC1_EPI4: [[PROF9]] = !{!"branch_weights", i32 0, i32 0}
; MAINVF4IC1_EPI4: [[LOOP10]] = distinct !{[[LOOP10]], [[META5]], [[META6]]}
; MAINVF4IC1_EPI4: [[PROF11]] = !{!"branch_weights", i32 2, i32 1}
; MAINVF4IC1_EPI4: [[LOOP12]] = distinct !{[[LOOP12]], [[META5]]}
;.
; MAINVF4IC2_EPI4: [[PROF0]] = !{!"function_entry_count", i64 13}
; MAINVF4IC2_EPI4: [[PROF1]] = !{!"branch_weights", i32 12, i32 1}
; MAINVF4IC2_EPI4: [[PROF2]] = !{!"branch_weights", i32 1, i32 127}
; MAINVF4IC2_EPI4: [[PROF3]] = !{!"branch_weights", i32 1, i32 153}
; MAINVF4IC2_EPI4: [[LOOP4]] = distinct !{[[LOOP4]], [[META5:![0-9]+]], [[META6:![0-9]+]]}
; MAINVF4IC2_EPI4: [[META5]] = !{!"llvm.loop.isvectorized", i32 1}
; MAINVF4IC2_EPI4: [[META6]] = !{!"llvm.loop.unroll.runtime.disable"}
; MAINVF4IC2_EPI4: [[PROF7]] = !{!"branch_weights", i32 1, i32 7}
; MAINVF4IC2_EPI4: [[PROF8]] = !{!"branch_weights", i32 4, i32 0}
; MAINVF4IC2_EPI4: [[PROF9]] = !{!"branch_weights", i32 0, i32 0}
; MAINVF4IC2_EPI4: [[LOOP10]] = distinct !{[[LOOP10]], [[META5]], [[META6]]}
; MAINVF4IC2_EPI4: [[PROF11]] = !{!"branch_weights", i32 1, i32 3}
; MAINVF4IC2_EPI4: [[PROF12]] = !{!"branch_weights", i32 2, i32 1}
; MAINVF4IC2_EPI4: [[LOOP13]] = distinct !{[[LOOP13]], [[META5]]}
;.
|
