1 ; RUN: opt -S -loop-vectorize -pass-remarks-analysis=loop-vectorize -pass-remarks-with-hotness < %s 2>&1 | FileCheck %s
2 ; RUN: opt -S -passes=loop-vectorize -pass-remarks-analysis=loop-vectorize -pass-remarks-with-hotness < %s 2>&1 | FileCheck %s
4 ; 1 void cold(char *A, char *B, char *C, char *D, char *E, int N) {
5 ; 2 for(int i = 0; i < N; i++) {
6 ; 3 A[i + 1] = A[i] + B[i];
7 ; 4 C[i] = D[i] * E[i];
11 ; 8 void hot(char *A, char *B, char *C, char *D, char *E, int N) {
12 ; 9 for(int i = 0; i < N; i++) {
13 ; 10 A[i + 1] = A[i] + B[i];
14 ; 11 C[i] = D[i] * E[i];
18 ; 15 void unknown(char *A, char *B, char *C, char *D, char *E, int N) {
19 ; 16 for(int i = 0; i < N; i++) {
20 ; 17 A[i + 1] = A[i] + B[i];
21 ; 18 C[i] = D[i] * E[i];
25 ; CHECK: remark: /tmp/s.c:2:3: loop not vectorized: unsafe dependent memory operations in loop. Use #pragma loop distribute(enable) to allow loop distribution to attempt to isolate the offending operations into a separate loop (hotness: 300)
26 ; CHECK: remark: /tmp/s.c:9:3: loop not vectorized: unsafe dependent memory operations in loop. Use #pragma loop distribute(enable) to allow loop distribution to attempt to isolate the offending operations into a separate loop (hotness: 5000)
27 ; CHECK: remark: /tmp/s.c:16:3: loop not vectorized: unsafe dependent memory operations in loop. Use #pragma loop distribute(enable) to allow loop distribution to attempt to isolate the offending operations into a separate loop{{$}}
29 ; ModuleID = '/tmp/s.c'
30 source_filename = "/tmp/s.c"
31 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
33 ; Function Attrs: norecurse nounwind ssp uwtable
34 define void @cold(i8* nocapture %A, i8* nocapture readonly %B, i8* nocapture %C, i8* nocapture readonly %D, i8* nocapture readonly %E, i32 %N) local_unnamed_addr #0 !dbg !7 !prof !56 {
36 %cmp28 = icmp sgt i32 %N, 0, !dbg !9
37 br i1 %cmp28, label %ph, label %for.cond.cleanup, !dbg !10, !prof !58
43 %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %ph ]
44 %arrayidx = getelementptr inbounds i8, i8* %A, i64 %indvars.iv, !dbg !12
45 %0 = load i8, i8* %arrayidx, align 1, !dbg !12, !tbaa !13
46 %arrayidx2 = getelementptr inbounds i8, i8* %B, i64 %indvars.iv, !dbg !16
47 %1 = load i8, i8* %arrayidx2, align 1, !dbg !16, !tbaa !13
48 %add = add i8 %1, %0, !dbg !17
49 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !10
50 %arrayidx7 = getelementptr inbounds i8, i8* %A, i64 %indvars.iv.next, !dbg !18
51 store i8 %add, i8* %arrayidx7, align 1, !dbg !19, !tbaa !13
52 %arrayidx9 = getelementptr inbounds i8, i8* %D, i64 %indvars.iv, !dbg !20
53 %2 = load i8, i8* %arrayidx9, align 1, !dbg !20, !tbaa !13
54 %arrayidx12 = getelementptr inbounds i8, i8* %E, i64 %indvars.iv, !dbg !21
55 %3 = load i8, i8* %arrayidx12, align 1, !dbg !21, !tbaa !13
56 %mul = mul i8 %3, %2, !dbg !22
57 %arrayidx16 = getelementptr inbounds i8, i8* %C, i64 %indvars.iv, !dbg !23
58 store i8 %mul, i8* %arrayidx16, align 1, !dbg !24, !tbaa !13
59 %lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !10
60 %exitcond = icmp eq i32 %lftr.wideiv, %N, !dbg !10
61 br i1 %exitcond, label %for.cond.cleanup, label %for.body, !dbg !10, !llvm.loop !25, !prof !59
67 ; Function Attrs: norecurse nounwind ssp uwtable
68 define void @hot(i8* nocapture %A, i8* nocapture readonly %B, i8* nocapture %C, i8* nocapture readonly %D, i8* nocapture readonly %E, i32 %N) local_unnamed_addr #0 !dbg !26 !prof !57 {
70 %cmp28 = icmp sgt i32 %N, 0, !dbg !27
71 br i1 %cmp28, label %ph, label %for.cond.cleanup, !dbg !28, !prof !58
77 %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %ph ]
78 %arrayidx = getelementptr inbounds i8, i8* %A, i64 %indvars.iv, !dbg !30
79 %0 = load i8, i8* %arrayidx, align 1, !dbg !30, !tbaa !13
80 %arrayidx2 = getelementptr inbounds i8, i8* %B, i64 %indvars.iv, !dbg !31
81 %1 = load i8, i8* %arrayidx2, align 1, !dbg !31, !tbaa !13
82 %add = add i8 %1, %0, !dbg !32
83 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !28
84 %arrayidx7 = getelementptr inbounds i8, i8* %A, i64 %indvars.iv.next, !dbg !33
85 store i8 %add, i8* %arrayidx7, align 1, !dbg !34, !tbaa !13
86 %arrayidx9 = getelementptr inbounds i8, i8* %D, i64 %indvars.iv, !dbg !35
87 %2 = load i8, i8* %arrayidx9, align 1, !dbg !35, !tbaa !13
88 %arrayidx12 = getelementptr inbounds i8, i8* %E, i64 %indvars.iv, !dbg !36
89 %3 = load i8, i8* %arrayidx12, align 1, !dbg !36, !tbaa !13
90 %mul = mul i8 %3, %2, !dbg !37
91 %arrayidx16 = getelementptr inbounds i8, i8* %C, i64 %indvars.iv, !dbg !38
92 store i8 %mul, i8* %arrayidx16, align 1, !dbg !39, !tbaa !13
93 %lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !28
94 %exitcond = icmp eq i32 %lftr.wideiv, %N, !dbg !28
95 br i1 %exitcond, label %for.cond.cleanup, label %for.body, !dbg !28, !llvm.loop !40, !prof !59
101 ; Function Attrs: norecurse nounwind ssp uwtable
102 define void @unknown(i8* nocapture %A, i8* nocapture readonly %B, i8* nocapture %C, i8* nocapture readonly %D, i8* nocapture readonly %E, i32 %N) local_unnamed_addr #0 !dbg !41 {
104 %cmp28 = icmp sgt i32 %N, 0, !dbg !42
105 br i1 %cmp28, label %ph, label %for.cond.cleanup, !dbg !43
111 %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %ph ]
112 %arrayidx = getelementptr inbounds i8, i8* %A, i64 %indvars.iv, !dbg !45
113 %0 = load i8, i8* %arrayidx, align 1, !dbg !45, !tbaa !13
114 %arrayidx2 = getelementptr inbounds i8, i8* %B, i64 %indvars.iv, !dbg !46
115 %1 = load i8, i8* %arrayidx2, align 1, !dbg !46, !tbaa !13
116 %add = add i8 %1, %0, !dbg !47
117 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !43
118 %arrayidx7 = getelementptr inbounds i8, i8* %A, i64 %indvars.iv.next, !dbg !48
119 store i8 %add, i8* %arrayidx7, align 1, !dbg !49, !tbaa !13
120 %arrayidx9 = getelementptr inbounds i8, i8* %D, i64 %indvars.iv, !dbg !50
121 %2 = load i8, i8* %arrayidx9, align 1, !dbg !50, !tbaa !13
122 %arrayidx12 = getelementptr inbounds i8, i8* %E, i64 %indvars.iv, !dbg !51
123 %3 = load i8, i8* %arrayidx12, align 1, !dbg !51, !tbaa !13
124 %mul = mul i8 %3, %2, !dbg !52
125 %arrayidx16 = getelementptr inbounds i8, i8* %C, i64 %indvars.iv, !dbg !53
126 store i8 %mul, i8* %arrayidx16, align 1, !dbg !54, !tbaa !13
127 %lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !43
128 %exitcond = icmp eq i32 %lftr.wideiv, %N, !dbg !43
129 br i1 %exitcond, label %for.cond.cleanup, label %for.body, !dbg !43, !llvm.loop !55
135 attributes #0 = { norecurse nounwind ssp uwtable "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="core2" "target-features"="+cx16,+fxsr,+mmx,+sse,+sse2,+sse3,+ssse3,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
138 !llvm.module.flags = !{!3, !4, !5}
141 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.9.0 (trunk 273572) (llvm/trunk 273585)", isOptimized: true, runtimeVersion: 0, emissionKind: LineTablesOnly, enums: !2)
142 !1 = !DIFile(filename: "/tmp/s.c", directory: "/tmp")
144 !3 = !{i32 2, !"Dwarf Version", i32 2}
145 !4 = !{i32 2, !"Debug Info Version", i32 3}
146 !5 = !{i32 1, !"PIC Level", i32 2}
147 !6 = !{!"clang version 3.9.0 (trunk 273572) (llvm/trunk 273585)"}
148 !7 = distinct !DISubprogram(name: "cold", scope: !1, file: !1, line: 1, type: !8, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !2)
149 !8 = !DISubroutineType(types: !2)
150 !9 = !DILocation(line: 2, column: 20, scope: !7)
151 !10 = !DILocation(line: 2, column: 3, scope: !7)
152 !11 = !DILocation(line: 6, column: 1, scope: !7)
153 !12 = !DILocation(line: 3, column: 16, scope: !7)
154 !13 = !{!14, !14, i64 0}
155 !14 = !{!"omnipotent char", !15, i64 0}
156 !15 = !{!"Simple C/C++ TBAA"}
157 !16 = !DILocation(line: 3, column: 23, scope: !7)
158 !17 = !DILocation(line: 3, column: 21, scope: !7)
159 !18 = !DILocation(line: 3, column: 5, scope: !7)
160 !19 = !DILocation(line: 3, column: 14, scope: !7)
161 !20 = !DILocation(line: 4, column: 12, scope: !7)
162 !21 = !DILocation(line: 4, column: 19, scope: !7)
163 !22 = !DILocation(line: 4, column: 17, scope: !7)
164 !23 = !DILocation(line: 4, column: 5, scope: !7)
165 !24 = !DILocation(line: 4, column: 10, scope: !7)
166 !25 = distinct !{!25, !10}
167 !26 = distinct !DISubprogram(name: "hot", scope: !1, file: !1, line: 8, type: !8, isLocal: false, isDefinition: true, scopeLine: 8, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !2)
168 !27 = !DILocation(line: 9, column: 20, scope: !26)
169 !28 = !DILocation(line: 9, column: 3, scope: !26)
170 !29 = !DILocation(line: 13, column: 1, scope: !26)
171 !30 = !DILocation(line: 10, column: 16, scope: !26)
172 !31 = !DILocation(line: 10, column: 23, scope: !26)
173 !32 = !DILocation(line: 10, column: 21, scope: !26)
174 !33 = !DILocation(line: 10, column: 5, scope: !26)
175 !34 = !DILocation(line: 10, column: 14, scope: !26)
176 !35 = !DILocation(line: 11, column: 12, scope: !26)
177 !36 = !DILocation(line: 11, column: 19, scope: !26)
178 !37 = !DILocation(line: 11, column: 17, scope: !26)
179 !38 = !DILocation(line: 11, column: 5, scope: !26)
180 !39 = !DILocation(line: 11, column: 10, scope: !26)
181 !40 = distinct !{!40, !28}
182 !41 = distinct !DISubprogram(name: "unknown", scope: !1, file: !1, line: 15, type: !8, isLocal: false, isDefinition: true, scopeLine: 15, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !2)
183 !42 = !DILocation(line: 16, column: 20, scope: !41)
184 !43 = !DILocation(line: 16, column: 3, scope: !41)
185 !44 = !DILocation(line: 20, column: 1, scope: !41)
186 !45 = !DILocation(line: 17, column: 16, scope: !41)
187 !46 = !DILocation(line: 17, column: 23, scope: !41)
188 !47 = !DILocation(line: 17, column: 21, scope: !41)
189 !48 = !DILocation(line: 17, column: 5, scope: !41)
190 !49 = !DILocation(line: 17, column: 14, scope: !41)
191 !50 = !DILocation(line: 18, column: 12, scope: !41)
192 !51 = !DILocation(line: 18, column: 19, scope: !41)
193 !52 = !DILocation(line: 18, column: 17, scope: !41)
194 !53 = !DILocation(line: 18, column: 5, scope: !41)
195 !54 = !DILocation(line: 18, column: 10, scope: !41)
196 !55 = distinct !{!55, !43}
197 !56 = !{!"function_entry_count", i64 3}
198 !57 = !{!"function_entry_count", i64 50}
199 !58 = !{!"branch_weights", i32 99, i32 1}
200 !59 = !{!"branch_weights", i32 1, i32 99}