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
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -O3 -S | FileCheck %s
; RUN: opt < %s -passes="default<O3>" -S | FileCheck %s
; Test that IR is optimal after vectorization/unrolling/CSE/canonicalization.
; In particular, there should be no fdivs inside loops because that is expensive.
; TODO: There is a CSE opportunity to reduce the hoisted fdivs after vectorization/unrolling.
; PR46115 - https://llvm.org/PR46115
target datalayout = "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx10.15.0"
define void @vdiv(ptr %x, ptr %y, double %a, i32 %N) #0 {
; CHECK-LABEL: @vdiv(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CMP1:%.*]] = icmp sgt i32 [[N:%.*]], 0
; CHECK-NEXT: br i1 [[CMP1]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_END:%.*]]
; CHECK: iter.check:
; CHECK-NEXT: [[X4:%.*]] = ptrtoint ptr [[X:%.*]] to i64
; CHECK-NEXT: [[Y5:%.*]] = ptrtoint ptr [[Y:%.*]] to i64
; CHECK-NEXT: [[WIDE_TRIP_COUNT:%.*]] = zext nneg i32 [[N]] to i64
; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i32 [[N]], 4
; CHECK-NEXT: [[TMP0:%.*]] = sub i64 [[X4]], [[Y5]]
; CHECK-NEXT: [[DIFF_CHECK:%.*]] = icmp ult i64 [[TMP0]], 128
; CHECK-NEXT: [[OR_COND:%.*]] = select i1 [[MIN_ITERS_CHECK]], i1 true, i1 [[DIFF_CHECK]]
; CHECK-NEXT: br i1 [[OR_COND]], label [[FOR_BODY_PREHEADER9:%.*]], label [[VECTOR_PH:%.*]]
; CHECK: vector.main.loop.iter.check:
; CHECK-NEXT: [[MIN_ITERS_CHECK6:%.*]] = icmp ult i32 [[N]], 16
; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK6]], label [[VEC_EPILOG_PH:%.*]], label [[VECTOR_PH1:%.*]]
; CHECK: vector.ph:
; CHECK-NEXT: [[N_VEC:%.*]] = and i64 [[WIDE_TRIP_COUNT]], 2147483632
; 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: [[TMP1:%.*]] = fdiv fast <4 x double> splat (double 1.000000e+00), [[BROADCAST_SPLAT]]
; CHECK-NEXT: [[TMP2:%.*]] = fdiv fast <4 x double> splat (double 1.000000e+00), [[BROADCAST_SPLAT]]
; CHECK-NEXT: [[TMP3:%.*]] = fdiv fast <4 x double> splat (double 1.000000e+00), [[BROADCAST_SPLAT]]
; CHECK-NEXT: [[TMP4:%.*]] = fdiv fast <4 x double> splat (double 1.000000e+00), [[BROADCAST_SPLAT]]
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH1]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[TMP5:%.*]] = getelementptr inbounds nuw double, ptr [[Y]], i64 [[INDEX]]
; CHECK-NEXT: [[TMP6:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP5]], i64 32
; CHECK-NEXT: [[TMP7:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP5]], i64 64
; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP5]], i64 96
; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x double>, ptr [[TMP5]], align 8, !tbaa [[TBAA3:![0-9]+]]
; CHECK-NEXT: [[WIDE_LOAD6:%.*]] = load <4 x double>, ptr [[TMP6]], align 8, !tbaa [[TBAA3]]
; CHECK-NEXT: [[WIDE_LOAD7:%.*]] = load <4 x double>, ptr [[TMP7]], align 8, !tbaa [[TBAA3]]
; CHECK-NEXT: [[WIDE_LOAD8:%.*]] = load <4 x double>, ptr [[TMP8]], align 8, !tbaa [[TBAA3]]
; CHECK-NEXT: [[TMP9:%.*]] = fmul fast <4 x double> [[WIDE_LOAD]], [[TMP1]]
; CHECK-NEXT: [[TMP10:%.*]] = fmul fast <4 x double> [[WIDE_LOAD6]], [[TMP2]]
; CHECK-NEXT: [[TMP11:%.*]] = fmul fast <4 x double> [[WIDE_LOAD7]], [[TMP3]]
; CHECK-NEXT: [[TMP12:%.*]] = fmul fast <4 x double> [[WIDE_LOAD8]], [[TMP4]]
; CHECK-NEXT: [[TMP13:%.*]] = getelementptr inbounds nuw double, ptr [[X]], i64 [[INDEX]]
; CHECK-NEXT: [[TMP14:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP13]], i64 32
; CHECK-NEXT: [[TMP15:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP13]], i64 64
; CHECK-NEXT: [[TMP16:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP13]], i64 96
; CHECK-NEXT: store <4 x double> [[TMP9]], ptr [[TMP13]], align 8, !tbaa [[TBAA3]]
; CHECK-NEXT: store <4 x double> [[TMP10]], ptr [[TMP14]], align 8, !tbaa [[TBAA3]]
; CHECK-NEXT: store <4 x double> [[TMP11]], ptr [[TMP15]], align 8, !tbaa [[TBAA3]]
; CHECK-NEXT: store <4 x double> [[TMP12]], ptr [[TMP16]], align 8, !tbaa [[TBAA3]]
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 16
; CHECK-NEXT: [[TMP17:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT: br i1 [[TMP17]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP7:![0-9]+]]
; CHECK: middle.block:
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[N_VEC]], [[WIDE_TRIP_COUNT]]
; CHECK-NEXT: br i1 [[CMP_N]], label [[FOR_END]], label [[VEC_EPILOG_ITER_CHECK:%.*]]
; CHECK: vec.epilog.iter.check:
; CHECK-NEXT: [[N_VEC_REMAINING:%.*]] = and i64 [[WIDE_TRIP_COUNT]], 12
; CHECK-NEXT: [[MIN_EPILOG_ITERS_CHECK:%.*]] = icmp eq i64 [[N_VEC_REMAINING]], 0
; CHECK-NEXT: br i1 [[MIN_EPILOG_ITERS_CHECK]], label [[FOR_BODY_PREHEADER9]], label [[VEC_EPILOG_PH]]
; CHECK: vec.epilog.ph:
; CHECK-NEXT: [[VEC_EPILOG_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[VECTOR_PH]] ]
; CHECK-NEXT: [[N_VEC11:%.*]] = and i64 [[WIDE_TRIP_COUNT]], 2147483644
; CHECK-NEXT: [[BROADCAST_SPLATINSERT14:%.*]] = insertelement <4 x double> poison, double [[A]], i64 0
; CHECK-NEXT: [[BROADCAST_SPLAT15:%.*]] = shufflevector <4 x double> [[BROADCAST_SPLATINSERT14]], <4 x double> poison, <4 x i32> zeroinitializer
; CHECK-NEXT: [[TMP38:%.*]] = fdiv fast <4 x double> splat (double 1.000000e+00), [[BROADCAST_SPLAT15]]
; CHECK-NEXT: br label [[VEC_EPILOG_VECTOR_BODY:%.*]]
; CHECK: vec.epilog.vector.body:
; CHECK-NEXT: [[INDEX12:%.*]] = phi i64 [ [[VEC_EPILOG_RESUME_VAL]], [[VEC_EPILOG_PH]] ], [ [[INDEX_NEXT16:%.*]], [[VEC_EPILOG_VECTOR_BODY]] ]
; CHECK-NEXT: [[TMP39:%.*]] = getelementptr inbounds nuw double, ptr [[Y]], i64 [[INDEX12]]
; CHECK-NEXT: [[WIDE_LOAD13:%.*]] = load <4 x double>, ptr [[TMP39]], align 8, !tbaa [[TBAA3]]
; CHECK-NEXT: [[TMP40:%.*]] = fmul fast <4 x double> [[WIDE_LOAD13]], [[TMP38]]
; CHECK-NEXT: [[TMP41:%.*]] = getelementptr inbounds nuw double, ptr [[X]], i64 [[INDEX12]]
; CHECK-NEXT: store <4 x double> [[TMP40]], ptr [[TMP41]], align 8, !tbaa [[TBAA3]]
; CHECK-NEXT: [[INDEX_NEXT16]] = add nuw i64 [[INDEX12]], 4
; CHECK-NEXT: [[TMP42:%.*]] = icmp eq i64 [[INDEX_NEXT16]], [[N_VEC11]]
; CHECK-NEXT: br i1 [[TMP42]], label [[VEC_EPILOG_MIDDLE_BLOCK:%.*]], label [[VEC_EPILOG_VECTOR_BODY]], !llvm.loop [[LOOP10:![0-9]+]]
; CHECK: vec.epilog.middle.block:
; CHECK-NEXT: [[CMP_N17:%.*]] = icmp eq i64 [[N_VEC11]], [[WIDE_TRIP_COUNT]]
; CHECK-NEXT: br i1 [[CMP_N17]], label [[FOR_END]], label [[FOR_BODY_PREHEADER9]]
; CHECK: for.body.preheader:
; CHECK-NEXT: [[INDVARS_IV_PH:%.*]] = phi i64 [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[FOR_BODY_PREHEADER]] ], [ [[N_VEC11]], [[VEC_EPILOG_MIDDLE_BLOCK]] ]
; CHECK-NEXT: [[TMP43:%.*]] = sub nsw i64 [[WIDE_TRIP_COUNT]], [[INDVARS_IV_PH]]
; CHECK-NEXT: [[XTRAITER:%.*]] = and i64 [[TMP43]], 7
; CHECK-NEXT: [[LCMP_MOD_NOT:%.*]] = icmp eq i64 [[XTRAITER]], 0
; CHECK-NEXT: br i1 [[LCMP_MOD_NOT]], label [[FOR_BODY_PROL_LOOPEXIT:%.*]], label [[FOR_BODY_PROL_PREHEADER:%.*]]
; CHECK: for.body.prol.preheader:
; CHECK-NEXT: [[TMP18:%.*]] = fdiv fast double 1.000000e+00, [[A]]
; CHECK-NEXT: br label [[FOR_BODY_PROL:%.*]]
; CHECK: for.body.prol:
; CHECK-NEXT: [[INDVARS_IV_PROL:%.*]] = phi i64 [ [[INDVARS_IV_NEXT_PROL:%.*]], [[FOR_BODY_PROL]] ], [ [[INDVARS_IV_PH]], [[FOR_BODY_PROL_PREHEADER]] ]
; CHECK-NEXT: [[PROL_ITER:%.*]] = phi i64 [ [[PROL_ITER_NEXT:%.*]], [[FOR_BODY_PROL]] ], [ 0, [[FOR_BODY_PROL_PREHEADER]] ]
; CHECK-NEXT: [[ARRAYIDX_PROL:%.*]] = getelementptr inbounds nuw double, ptr [[Y]], i64 [[INDVARS_IV_PROL]]
; CHECK-NEXT: [[T0_PROL:%.*]] = load double, ptr [[ARRAYIDX_PROL]], align 8, !tbaa [[TBAA3]]
; CHECK-NEXT: [[TMP19:%.*]] = fmul fast double [[T0_PROL]], [[TMP18]]
; CHECK-NEXT: [[ARRAYIDX2_PROL:%.*]] = getelementptr inbounds nuw double, ptr [[X]], i64 [[INDVARS_IV_PROL]]
; CHECK-NEXT: store double [[TMP19]], ptr [[ARRAYIDX2_PROL]], align 8, !tbaa [[TBAA3]]
; CHECK-NEXT: [[INDVARS_IV_NEXT_PROL]] = add nuw nsw i64 [[INDVARS_IV_PROL]], 1
; CHECK-NEXT: [[PROL_ITER_NEXT]] = add i64 [[PROL_ITER]], 1
; CHECK-NEXT: [[PROL_ITER_CMP_NOT:%.*]] = icmp eq i64 [[PROL_ITER_NEXT]], [[XTRAITER]]
; CHECK-NEXT: br i1 [[PROL_ITER_CMP_NOT]], label [[FOR_BODY_PROL_LOOPEXIT]], label [[FOR_BODY_PROL]], !llvm.loop [[LOOP11:![0-9]+]]
; CHECK: for.body.prol.loopexit:
; CHECK-NEXT: [[INDVARS_IV_UNR:%.*]] = phi i64 [ [[INDVARS_IV_PH]], [[FOR_BODY_PREHEADER9]] ], [ [[INDVARS_IV_NEXT_PROL]], [[FOR_BODY_PROL]] ]
; CHECK-NEXT: [[TMP20:%.*]] = sub nsw i64 [[INDVARS_IV_PH]], [[WIDE_TRIP_COUNT]]
; CHECK-NEXT: [[TMP21:%.*]] = icmp ugt i64 [[TMP20]], -8
; CHECK-NEXT: br i1 [[TMP21]], label [[FOR_END]], label [[FOR_BODY_PREHEADER9_NEW:%.*]]
; CHECK: for.body.preheader.new:
; CHECK-NEXT: [[TMP22:%.*]] = fdiv fast double 1.000000e+00, [[A]]
; CHECK-NEXT: [[TMP23:%.*]] = fdiv fast double 1.000000e+00, [[A]]
; CHECK-NEXT: [[TMP24:%.*]] = fdiv fast double 1.000000e+00, [[A]]
; CHECK-NEXT: [[TMP25:%.*]] = fdiv fast double 1.000000e+00, [[A]]
; CHECK-NEXT: [[TMP26:%.*]] = fdiv fast double 1.000000e+00, [[A]]
; CHECK-NEXT: [[TMP27:%.*]] = fdiv fast double 1.000000e+00, [[A]]
; CHECK-NEXT: [[TMP28:%.*]] = fdiv fast double 1.000000e+00, [[A]]
; CHECK-NEXT: [[TMP29:%.*]] = fdiv fast double 1.000000e+00, [[A]]
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_UNR]], [[FOR_BODY_PREHEADER9_NEW]] ], [ [[INDVARS_IV_NEXT_7:%.*]], [[FOR_BODY]] ]
; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds nuw double, ptr [[Y]], i64 [[INDVARS_IV]]
; CHECK-NEXT: [[T0:%.*]] = load double, ptr [[ARRAYIDX]], align 8, !tbaa [[TBAA3]]
; CHECK-NEXT: [[TMP30:%.*]] = fmul fast double [[T0]], [[TMP22]]
; CHECK-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds nuw double, ptr [[X]], i64 [[INDVARS_IV]]
; CHECK-NEXT: store double [[TMP30]], ptr [[ARRAYIDX2]], align 8, !tbaa [[TBAA3]]
; CHECK-NEXT: [[INDVARS_IV_NEXT:%.*]] = add nuw nsw i64 [[INDVARS_IV]], 1
; CHECK-NEXT: [[ARRAYIDX_1:%.*]] = getelementptr inbounds nuw double, ptr [[Y]], i64 [[INDVARS_IV_NEXT]]
; CHECK-NEXT: [[T0_1:%.*]] = load double, ptr [[ARRAYIDX_1]], align 8, !tbaa [[TBAA3]]
; CHECK-NEXT: [[TMP31:%.*]] = fmul fast double [[T0_1]], [[TMP23]]
; CHECK-NEXT: [[ARRAYIDX2_1:%.*]] = getelementptr inbounds nuw double, ptr [[X]], i64 [[INDVARS_IV_NEXT]]
; CHECK-NEXT: store double [[TMP31]], ptr [[ARRAYIDX2_1]], align 8, !tbaa [[TBAA3]]
; CHECK-NEXT: [[INDVARS_IV_NEXT_1:%.*]] = add nuw nsw i64 [[INDVARS_IV]], 2
; CHECK-NEXT: [[ARRAYIDX_2:%.*]] = getelementptr inbounds nuw double, ptr [[Y]], i64 [[INDVARS_IV_NEXT_1]]
; CHECK-NEXT: [[T0_2:%.*]] = load double, ptr [[ARRAYIDX_2]], align 8, !tbaa [[TBAA3]]
; CHECK-NEXT: [[TMP32:%.*]] = fmul fast double [[T0_2]], [[TMP24]]
; CHECK-NEXT: [[ARRAYIDX2_2:%.*]] = getelementptr inbounds nuw double, ptr [[X]], i64 [[INDVARS_IV_NEXT_1]]
; CHECK-NEXT: store double [[TMP32]], ptr [[ARRAYIDX2_2]], align 8, !tbaa [[TBAA3]]
; CHECK-NEXT: [[INDVARS_IV_NEXT_2:%.*]] = add nuw nsw i64 [[INDVARS_IV]], 3
; CHECK-NEXT: [[ARRAYIDX_3:%.*]] = getelementptr inbounds nuw double, ptr [[Y]], i64 [[INDVARS_IV_NEXT_2]]
; CHECK-NEXT: [[T0_3:%.*]] = load double, ptr [[ARRAYIDX_3]], align 8, !tbaa [[TBAA3]]
; CHECK-NEXT: [[TMP33:%.*]] = fmul fast double [[T0_3]], [[TMP25]]
; CHECK-NEXT: [[ARRAYIDX2_3:%.*]] = getelementptr inbounds nuw double, ptr [[X]], i64 [[INDVARS_IV_NEXT_2]]
; CHECK-NEXT: store double [[TMP33]], ptr [[ARRAYIDX2_3]], align 8, !tbaa [[TBAA3]]
; CHECK-NEXT: [[INDVARS_IV_NEXT_3:%.*]] = add nuw nsw i64 [[INDVARS_IV]], 4
; CHECK-NEXT: [[ARRAYIDX_4:%.*]] = getelementptr inbounds nuw double, ptr [[Y]], i64 [[INDVARS_IV_NEXT_3]]
; CHECK-NEXT: [[T0_4:%.*]] = load double, ptr [[ARRAYIDX_4]], align 8, !tbaa [[TBAA3]]
; CHECK-NEXT: [[TMP34:%.*]] = fmul fast double [[T0_4]], [[TMP26]]
; CHECK-NEXT: [[ARRAYIDX2_4:%.*]] = getelementptr inbounds nuw double, ptr [[X]], i64 [[INDVARS_IV_NEXT_3]]
; CHECK-NEXT: store double [[TMP34]], ptr [[ARRAYIDX2_4]], align 8, !tbaa [[TBAA3]]
; CHECK-NEXT: [[INDVARS_IV_NEXT_4:%.*]] = add nuw nsw i64 [[INDVARS_IV]], 5
; CHECK-NEXT: [[ARRAYIDX_5:%.*]] = getelementptr inbounds nuw double, ptr [[Y]], i64 [[INDVARS_IV_NEXT_4]]
; CHECK-NEXT: [[T0_5:%.*]] = load double, ptr [[ARRAYIDX_5]], align 8, !tbaa [[TBAA3]]
; CHECK-NEXT: [[TMP35:%.*]] = fmul fast double [[T0_5]], [[TMP27]]
; CHECK-NEXT: [[ARRAYIDX2_5:%.*]] = getelementptr inbounds nuw double, ptr [[X]], i64 [[INDVARS_IV_NEXT_4]]
; CHECK-NEXT: store double [[TMP35]], ptr [[ARRAYIDX2_5]], align 8, !tbaa [[TBAA3]]
; CHECK-NEXT: [[INDVARS_IV_NEXT_5:%.*]] = add nuw nsw i64 [[INDVARS_IV]], 6
; CHECK-NEXT: [[ARRAYIDX_6:%.*]] = getelementptr inbounds nuw double, ptr [[Y]], i64 [[INDVARS_IV_NEXT_5]]
; CHECK-NEXT: [[T0_6:%.*]] = load double, ptr [[ARRAYIDX_6]], align 8, !tbaa [[TBAA3]]
; CHECK-NEXT: [[TMP36:%.*]] = fmul fast double [[T0_6]], [[TMP28]]
; CHECK-NEXT: [[ARRAYIDX2_6:%.*]] = getelementptr inbounds nuw double, ptr [[X]], i64 [[INDVARS_IV_NEXT_5]]
; CHECK-NEXT: store double [[TMP36]], ptr [[ARRAYIDX2_6]], align 8, !tbaa [[TBAA3]]
; CHECK-NEXT: [[INDVARS_IV_NEXT_6:%.*]] = add nuw nsw i64 [[INDVARS_IV]], 7
; CHECK-NEXT: [[ARRAYIDX_7:%.*]] = getelementptr inbounds nuw double, ptr [[Y]], i64 [[INDVARS_IV_NEXT_6]]
; CHECK-NEXT: [[T0_7:%.*]] = load double, ptr [[ARRAYIDX_7]], align 8, !tbaa [[TBAA3]]
; CHECK-NEXT: [[TMP37:%.*]] = fmul fast double [[T0_7]], [[TMP29]]
; CHECK-NEXT: [[ARRAYIDX2_7:%.*]] = getelementptr inbounds nuw double, ptr [[X]], i64 [[INDVARS_IV_NEXT_6]]
; CHECK-NEXT: store double [[TMP37]], ptr [[ARRAYIDX2_7]], align 8, !tbaa [[TBAA3]]
; CHECK-NEXT: [[INDVARS_IV_NEXT_7]] = add nuw nsw i64 [[INDVARS_IV]], 8
; CHECK-NEXT: [[EXITCOND_NOT_7:%.*]] = icmp eq i64 [[INDVARS_IV_NEXT_7]], [[WIDE_TRIP_COUNT]]
; CHECK-NEXT: br i1 [[EXITCOND_NOT_7]], label [[FOR_END]], label [[FOR_BODY]], !llvm.loop [[LOOP13:![0-9]+]]
; CHECK: for.end:
; CHECK-NEXT: ret void
;
entry:
%div = fdiv fast double 1.0, %a
br label %for.cond
for.cond:
%n.0 = phi i32 [ 0, %entry ], [ %inc, %for.inc ]
%cmp = icmp slt i32 %n.0, %N
br i1 %cmp, label %for.body, label %for.cond.cleanup
for.cond.cleanup:
br label %for.end
for.body:
%idxprom = sext i32 %n.0 to i64
%arrayidx = getelementptr inbounds double, ptr %y, i64 %idxprom
%t0 = load double, ptr %arrayidx, align 8, !tbaa !3
%mul = fmul fast double %t0, %div
%idxprom1 = sext i32 %n.0 to i64
%arrayidx2 = getelementptr inbounds double, ptr %x, i64 %idxprom1
store double %mul, ptr %arrayidx2, align 8, !tbaa !3
br label %for.inc
for.inc:
%inc = add nsw i32 %n.0, 1
br label %for.cond
for.end:
ret void
}
attributes #0 = { nounwind ssp uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="all" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="true" "no-jump-tables"="false" "no-nans-fp-math"="true" "no-signed-zeros-fp-math"="true" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="skylake-avx512" "target-features"="+adx,+aes,+avx,+avx2,+avx512bw,+avx512cd,+avx512dq,+avx512f,+avx512vl,+bmi,+bmi2,+clflushopt,+clwb,+cx16,+cx8,+f16c,+fma,+fsgsbase,+fxsr,+invpcid,+lzcnt,+mmx,+movbe,+pclmul,+pku,+popcnt,+prfchw,+rdrnd,+rdseed,+sahf,+sse,+sse2,+sse3,+sse4.1,+sse4.2,+ssse3,+x87,+xsave,+xsavec,+xsaveopt,+xsaves" "unsafe-fp-math"="true" "use-soft-float"="false" }
!llvm.module.flags = !{!0, !1}
!llvm.ident = !{!2}
!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 7, !"PIC Level", i32 2}
!2 = !{!"clang version 11.0.0 (https://github.com/llvm/llvm-project.git 45ebe38ffc40bb7221fc587bfb4481cf7f53ebbc)"}
!3 = !{!4, !4, i64 0}
!4 = !{!"double", !5, i64 0}
!5 = !{!"omnipotent char", !6, i64 0}
!6 = !{!"Simple C/C++ TBAA"}
|
