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: --version 5
; RUN: opt < %s -passes=loop-vectorize -S | FileCheck %s
target datalayout = "e-m:e-i64:64-n32:64"
target triple = "powerpc64le-ibm-linux-gnu"
; We expect the loop with double reductions to be interleaved 8 times.
define void @test(ptr %arr, i32 %len) {
; CHECK-LABEL: define void @test(
; CHECK-SAME: ptr [[ARR:%.*]], i32 [[LEN:%.*]]) {
; CHECK-NEXT: [[ENTRY:.*]]:
; CHECK-NEXT: [[CMP4:%.*]] = icmp sgt i32 [[LEN]], 0
; CHECK-NEXT: br i1 [[CMP4]], label %[[ITER_CHECK:.*]], label %[[FOR_END:.*]]
; CHECK: [[ITER_CHECK]]:
; CHECK-NEXT: [[TMP0:%.*]] = add i32 [[LEN]], -1
; CHECK-NEXT: [[TMP1:%.*]] = zext i32 [[LEN]] to i64
; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[TMP1]], 2
; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label %[[VEC_EPILOG_SCALAR_PH:.*]], label %[[VECTOR_MAIN_LOOP_ITER_CHECK:.*]]
; CHECK: [[VECTOR_MAIN_LOOP_ITER_CHECK]]:
; CHECK-NEXT: [[MIN_ITERS_CHECK1:%.*]] = icmp ult i64 [[TMP1]], 16
; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK1]], label %[[VEC_EPILOG_PH:.*]], label %[[VECTOR_PH:.*]]
; CHECK: [[VECTOR_PH]]:
; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[TMP1]], 16
; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 [[TMP1]], [[N_MOD_VF]]
; CHECK-NEXT: br label %[[VECTOR_BODY:.*]]
; CHECK: [[VECTOR_BODY]]:
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT: [[VEC_PHI:%.*]] = phi <2 x double> [ zeroinitializer, %[[VECTOR_PH]] ], [ [[TMP12:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT: [[VEC_PHI2:%.*]] = phi <2 x double> [ zeroinitializer, %[[VECTOR_PH]] ], [ [[TMP13:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT: [[VEC_PHI3:%.*]] = phi <2 x double> [ zeroinitializer, %[[VECTOR_PH]] ], [ [[TMP14:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT: [[VEC_PHI4:%.*]] = phi <2 x double> [ zeroinitializer, %[[VECTOR_PH]] ], [ [[TMP15:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT: [[VEC_PHI5:%.*]] = phi <2 x double> [ zeroinitializer, %[[VECTOR_PH]] ], [ [[TMP16:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT: [[VEC_PHI6:%.*]] = phi <2 x double> [ zeroinitializer, %[[VECTOR_PH]] ], [ [[TMP17:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT: [[VEC_PHI7:%.*]] = phi <2 x double> [ zeroinitializer, %[[VECTOR_PH]] ], [ [[TMP18:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT: [[VEC_PHI8:%.*]] = phi <2 x double> [ zeroinitializer, %[[VECTOR_PH]] ], [ [[TMP19:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT: [[TMP3:%.*]] = getelementptr inbounds double, ptr [[ARR]], i64 [[INDEX]]
; CHECK-NEXT: [[TMP4:%.*]] = getelementptr inbounds double, ptr [[TMP3]], i32 0
; CHECK-NEXT: [[TMP5:%.*]] = getelementptr inbounds double, ptr [[TMP3]], i32 2
; CHECK-NEXT: [[TMP6:%.*]] = getelementptr inbounds double, ptr [[TMP3]], i32 4
; CHECK-NEXT: [[TMP7:%.*]] = getelementptr inbounds double, ptr [[TMP3]], i32 6
; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds double, ptr [[TMP3]], i32 8
; CHECK-NEXT: [[TMP9:%.*]] = getelementptr inbounds double, ptr [[TMP3]], i32 10
; CHECK-NEXT: [[TMP10:%.*]] = getelementptr inbounds double, ptr [[TMP3]], i32 12
; CHECK-NEXT: [[TMP11:%.*]] = getelementptr inbounds double, ptr [[TMP3]], i32 14
; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <2 x double>, ptr [[TMP4]], align 8
; CHECK-NEXT: [[WIDE_LOAD9:%.*]] = load <2 x double>, ptr [[TMP5]], align 8
; CHECK-NEXT: [[WIDE_LOAD10:%.*]] = load <2 x double>, ptr [[TMP6]], align 8
; CHECK-NEXT: [[WIDE_LOAD11:%.*]] = load <2 x double>, ptr [[TMP7]], align 8
; CHECK-NEXT: [[WIDE_LOAD12:%.*]] = load <2 x double>, ptr [[TMP8]], align 8
; CHECK-NEXT: [[WIDE_LOAD13:%.*]] = load <2 x double>, ptr [[TMP9]], align 8
; CHECK-NEXT: [[WIDE_LOAD14:%.*]] = load <2 x double>, ptr [[TMP10]], align 8
; CHECK-NEXT: [[WIDE_LOAD15:%.*]] = load <2 x double>, ptr [[TMP11]], align 8
; CHECK-NEXT: [[TMP12]] = fadd fast <2 x double> [[WIDE_LOAD]], [[VEC_PHI]]
; CHECK-NEXT: [[TMP13]] = fadd fast <2 x double> [[WIDE_LOAD9]], [[VEC_PHI2]]
; CHECK-NEXT: [[TMP14]] = fadd fast <2 x double> [[WIDE_LOAD10]], [[VEC_PHI3]]
; CHECK-NEXT: [[TMP15]] = fadd fast <2 x double> [[WIDE_LOAD11]], [[VEC_PHI4]]
; CHECK-NEXT: [[TMP16]] = fadd fast <2 x double> [[WIDE_LOAD12]], [[VEC_PHI5]]
; CHECK-NEXT: [[TMP17]] = fadd fast <2 x double> [[WIDE_LOAD13]], [[VEC_PHI6]]
; CHECK-NEXT: [[TMP18]] = fadd fast <2 x double> [[WIDE_LOAD14]], [[VEC_PHI7]]
; CHECK-NEXT: [[TMP19]] = fadd fast <2 x double> [[WIDE_LOAD15]], [[VEC_PHI8]]
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 16
; CHECK-NEXT: [[TMP20:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT: br i1 [[TMP20]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK: [[MIDDLE_BLOCK]]:
; CHECK-NEXT: [[BIN_RDX:%.*]] = fadd fast <2 x double> [[TMP13]], [[TMP12]]
; CHECK-NEXT: [[BIN_RDX16:%.*]] = fadd fast <2 x double> [[TMP14]], [[BIN_RDX]]
; CHECK-NEXT: [[BIN_RDX17:%.*]] = fadd fast <2 x double> [[TMP15]], [[BIN_RDX16]]
; CHECK-NEXT: [[BIN_RDX18:%.*]] = fadd fast <2 x double> [[TMP16]], [[BIN_RDX17]]
; CHECK-NEXT: [[BIN_RDX19:%.*]] = fadd fast <2 x double> [[TMP17]], [[BIN_RDX18]]
; CHECK-NEXT: [[BIN_RDX20:%.*]] = fadd fast <2 x double> [[TMP18]], [[BIN_RDX19]]
; CHECK-NEXT: [[BIN_RDX21:%.*]] = fadd fast <2 x double> [[TMP19]], [[BIN_RDX20]]
; CHECK-NEXT: [[TMP21:%.*]] = call fast double @llvm.vector.reduce.fadd.v2f64(double 0.000000e+00, <2 x double> [[BIN_RDX21]])
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[TMP1]], [[N_VEC]]
; CHECK-NEXT: br i1 [[CMP_N]], label %[[FOR_END_LOOPEXIT:.*]], label %[[VEC_EPILOG_ITER_CHECK:.*]]
; CHECK: [[VEC_EPILOG_ITER_CHECK]]:
; CHECK-NEXT: [[N_VEC_REMAINING:%.*]] = sub i64 [[TMP1]], [[N_VEC]]
; CHECK-NEXT: [[MIN_EPILOG_ITERS_CHECK:%.*]] = icmp ult i64 [[N_VEC_REMAINING]], 2
; CHECK-NEXT: br i1 [[MIN_EPILOG_ITERS_CHECK]], label %[[VEC_EPILOG_SCALAR_PH]], label %[[VEC_EPILOG_PH]]
; CHECK: [[VEC_EPILOG_PH]]:
; CHECK-NEXT: [[VEC_EPILOG_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], %[[VEC_EPILOG_ITER_CHECK]] ], [ 0, %[[VECTOR_MAIN_LOOP_ITER_CHECK]] ]
; CHECK-NEXT: [[BC_MERGE_RDX:%.*]] = phi double [ [[TMP21]], %[[VEC_EPILOG_ITER_CHECK]] ], [ 0.000000e+00, %[[VECTOR_MAIN_LOOP_ITER_CHECK]] ]
; CHECK-NEXT: [[N_MOD_VF22:%.*]] = urem i64 [[TMP1]], 2
; CHECK-NEXT: [[N_VEC23:%.*]] = sub i64 [[TMP1]], [[N_MOD_VF22]]
; CHECK-NEXT: [[TMP22:%.*]] = insertelement <2 x double> zeroinitializer, double [[BC_MERGE_RDX]], i32 0
; CHECK-NEXT: br label %[[VEC_EPILOG_VECTOR_BODY:.*]]
; CHECK: [[VEC_EPILOG_VECTOR_BODY]]:
; CHECK-NEXT: [[TMP23:%.*]] = phi i64 [ [[VEC_EPILOG_RESUME_VAL]], %[[VEC_EPILOG_PH]] ], [ [[INDEX_NEXT27:%.*]], %[[VEC_EPILOG_VECTOR_BODY]] ]
; CHECK-NEXT: [[VEC_PHI25:%.*]] = phi <2 x double> [ [[TMP22]], %[[VEC_EPILOG_PH]] ], [ [[TMP26:%.*]], %[[VEC_EPILOG_VECTOR_BODY]] ]
; CHECK-NEXT: [[TMP24:%.*]] = getelementptr inbounds double, ptr [[ARR]], i64 [[TMP23]]
; CHECK-NEXT: [[TMP25:%.*]] = getelementptr inbounds double, ptr [[TMP24]], i32 0
; CHECK-NEXT: [[WIDE_LOAD26:%.*]] = load <2 x double>, ptr [[TMP25]], align 8
; CHECK-NEXT: [[TMP26]] = fadd fast <2 x double> [[WIDE_LOAD26]], [[VEC_PHI25]]
; CHECK-NEXT: [[INDEX_NEXT27]] = add nuw i64 [[TMP23]], 2
; CHECK-NEXT: [[TMP27:%.*]] = icmp eq i64 [[INDEX_NEXT27]], [[N_VEC23]]
; CHECK-NEXT: br i1 [[TMP27]], label %[[VEC_EPILOG_MIDDLE_BLOCK:.*]], label %[[VEC_EPILOG_VECTOR_BODY]], !llvm.loop [[LOOP3:![0-9]+]]
; CHECK: [[VEC_EPILOG_MIDDLE_BLOCK]]:
; CHECK-NEXT: [[TMP28:%.*]] = call fast double @llvm.vector.reduce.fadd.v2f64(double 0.000000e+00, <2 x double> [[TMP26]])
; CHECK-NEXT: [[CMP_N28:%.*]] = icmp eq i64 [[TMP1]], [[N_VEC23]]
; CHECK-NEXT: br i1 [[CMP_N28]], label %[[FOR_END_LOOPEXIT]], label %[[VEC_EPILOG_SCALAR_PH]]
; CHECK: [[VEC_EPILOG_SCALAR_PH]]:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC23]], %[[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[N_VEC]], %[[VEC_EPILOG_ITER_CHECK]] ], [ 0, %[[ITER_CHECK]] ]
; CHECK-NEXT: [[BC_MERGE_RDX29:%.*]] = phi double [ [[TMP28]], %[[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[TMP21]], %[[VEC_EPILOG_ITER_CHECK]] ], [ 0.000000e+00, %[[ITER_CHECK]] ]
; CHECK-NEXT: br label %[[FOR_BODY:.*]]
; CHECK: [[FOR_BODY]]:
; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], %[[VEC_EPILOG_SCALAR_PH]] ], [ [[INDVARS_IV_NEXT:%.*]], %[[FOR_BODY]] ]
; CHECK-NEXT: [[REDX_05:%.*]] = phi double [ [[BC_MERGE_RDX29]], %[[VEC_EPILOG_SCALAR_PH]] ], [ [[ADD:%.*]], %[[FOR_BODY]] ]
; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds double, ptr [[ARR]], i64 [[INDVARS_IV]]
; CHECK-NEXT: [[TMP29:%.*]] = load double, ptr [[ARRAYIDX]], align 8
; CHECK-NEXT: [[ADD]] = fadd fast double [[TMP29]], [[REDX_05]]
; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add i64 [[INDVARS_IV]], 1
; CHECK-NEXT: [[LFTR_WIDEIV:%.*]] = trunc i64 [[INDVARS_IV]] to i32
; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i32 [[LFTR_WIDEIV]], [[TMP0]]
; CHECK-NEXT: br i1 [[EXITCOND]], label %[[FOR_END_LOOPEXIT]], label %[[FOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]]
; CHECK: [[FOR_END_LOOPEXIT]]:
; CHECK-NEXT: [[ADD_LCSSA:%.*]] = phi double [ [[ADD]], %[[FOR_BODY]] ], [ [[TMP21]], %[[MIDDLE_BLOCK]] ], [ [[TMP28]], %[[VEC_EPILOG_MIDDLE_BLOCK]] ]
; CHECK-NEXT: br label %[[FOR_END]]
; CHECK: [[FOR_END]]:
; CHECK-NEXT: [[REDX_0_LCSSA:%.*]] = phi double [ 0.000000e+00, %[[ENTRY]] ], [ [[ADD_LCSSA]], %[[FOR_END_LOOPEXIT]] ]
; CHECK-NEXT: ret void
;
entry:
%cmp4 = icmp sgt i32 %len, 0
br i1 %cmp4, label %for.body.lr.ph, label %for.end
for.body.lr.ph: ; preds = %entry
%0 = add i32 %len, -1
br label %for.body
for.body: ; preds = %for.body, %for.body.lr.ph
%indvars.iv = phi i64 [ 0, %for.body.lr.ph ], [ %indvars.iv.next, %for.body ]
%redx.05 = phi double [ 0.000000e+00, %for.body.lr.ph ], [ %add, %for.body ]
%arrayidx = getelementptr inbounds double, ptr %arr, i64 %indvars.iv
%1 = load double, ptr %arrayidx, align 8
%add = fadd fast double %1, %redx.05
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv to i32
%exitcond = icmp eq i32 %lftr.wideiv, %0
br i1 %exitcond, label %for.end.loopexit, label %for.body
for.end.loopexit: ; preds = %for.body
%add.lcssa = phi double [ %add, %for.body ]
br label %for.end
for.end: ; preds = %for.end.loopexit, %entry
%redx.0.lcssa = phi double [ 0.000000e+00, %entry ], [ %add.lcssa, %for.end.loopexit ]
ret void
}
;.
; CHECK: [[LOOP0]] = distinct !{[[LOOP0]], [[META1:![0-9]+]], [[META2:![0-9]+]]}
; CHECK: [[META1]] = !{!"llvm.loop.isvectorized", i32 1}
; CHECK: [[META2]] = !{!"llvm.loop.unroll.runtime.disable"}
; CHECK: [[LOOP3]] = distinct !{[[LOOP3]], [[META1]], [[META2]]}
; CHECK: [[LOOP4]] = distinct !{[[LOOP4]], [[META2]], [[META1]]}
;.
|
