1 ; RUN: opt < %s -passes=loop-vectorize -pass-remarks-missed='loop-vectorize' -mtriple=x86_64-unknown-linux -S 2>&1 | FileCheck %s
3 ; Verify analysis remarks are generated when interleaving is not beneficial.
4 ; CHECK: remark: vectorization-remarks-profitable.c:5:17: the cost-model indicates that vectorization is not beneficial
5 ; CHECK: remark: vectorization-remarks-profitable.c:5:17: the cost-model indicates that interleaving is not beneficial and is explicitly disabled or interleave count is set to 1
6 ; CHECK: remark: vectorization-remarks-profitable.c:11:3: the cost-model indicates that vectorization is not beneficial
7 ; CHECK: remark: vectorization-remarks-profitable.c:11:3: the cost-model indicates that interleaving is not beneficial
10 ; #pragma clang loop interleave(disable) unroll(disable)
11 ; for(int i = 0; i < n; i++) {
16 ; #pragma clang loop unroll(disable)
17 ; for(int i = 0; i < n; i++) {
21 ; ModuleID = 'vectorization-remarks-profitable.ll'
22 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
23 target triple = "x86_64-apple-macosx10.10.0"
25 ; Function Attrs: nounwind uwtable
26 define void @do_not_interleave(ptr noalias nocapture readonly %in, ptr noalias nocapture %out, i32 %size) #0 !dbg !4 {
28 %cmp.4 = icmp eq i32 %size, 0, !dbg !10
29 br i1 %cmp.4, label %for.end, label %for.body.preheader, !dbg !11
31 for.body.preheader: ; preds = %entry
32 br label %for.body, !dbg !12
34 for.body: ; preds = %for.body.preheader, %for.body
35 %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %for.body.preheader ]
36 %arrayidx = getelementptr inbounds ptr, ptr %in, i64 %indvars.iv, !dbg !12
37 %0 = load ptr, ptr %arrayidx, align 8, !dbg !12
38 %1 = load i32, ptr %0, align 4, !dbg !13
39 %arrayidx2 = getelementptr inbounds float, ptr %out, i64 %indvars.iv, !dbg !14
40 store i32 %1, ptr %arrayidx2, align 4, !dbg !15
41 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !11
42 %lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !11
43 %exitcond = icmp eq i32 %lftr.wideiv, %size, !dbg !11
44 br i1 %exitcond, label %for.end.loopexit, label %for.body, !dbg !11, !llvm.loop !16
46 for.end.loopexit: ; preds = %for.body
47 br label %for.end, !dbg !19
49 for.end: ; preds = %for.end.loopexit, %entry
53 ; Function Attrs: nounwind uwtable
54 define void @interleave_not_profitable(ptr noalias nocapture readonly %in, ptr noalias nocapture %out, i32 %size) #0 !dbg !6 {
56 %cmp.4 = icmp eq i32 %size, 0, !dbg !20
57 br i1 %cmp.4, label %for.end, label %for.body, !dbg !21
59 for.body: ; preds = %entry, %for.body
60 %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
61 %arrayidx = getelementptr inbounds ptr, ptr %in, i64 %indvars.iv, !dbg !22
62 %0 = load ptr, ptr %arrayidx, align 8, !dbg !22
63 %1 = load i32, ptr %0, align 4, !dbg !23
64 %arrayidx2 = getelementptr inbounds float, ptr %out, i64 %indvars.iv, !dbg !24
65 store i32 %1, ptr %arrayidx2, align 4, !dbg !25
66 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !21
67 %lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !21
68 %exitcond = icmp eq i32 %lftr.wideiv, %size, !dbg !21
69 br i1 %exitcond, label %for.end, label %for.body, !dbg !21, !llvm.loop !26
71 for.end: ; preds = %for.body, %entry
75 attributes #0 = { nounwind uwtable "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+mmx,+sse,+sse2" "unsafe-fp-math"="false" "use-soft-float"="false" }
78 !llvm.module.flags = !{!7, !8}
81 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.8.0 (trunk 250016)", isOptimized: false, runtimeVersion: 0, emissionKind: LineTablesOnly, enums: !2)
82 !1 = !DIFile(filename: "vectorization-remarks-profitable.c", directory: "")
84 !4 = distinct !DISubprogram(name: "do_not_interleave", scope: !1, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
85 !5 = !DISubroutineType(types: !2)
86 !6 = distinct !DISubprogram(name: "interleave_not_profitable", scope: !1, file: !1, line: 8, type: !5, isLocal: false, isDefinition: true, scopeLine: 8, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
87 !7 = !{i32 2, !"Dwarf Version", i32 4}
88 !8 = !{i32 2, !"Debug Info Version", i32 3}
89 !9 = !{!"clang version 3.8.0 (trunk 250016)"}
90 !10 = !DILocation(line: 4, column: 23, scope: !4)
91 !11 = !DILocation(line: 4, column: 3, scope: !4)
92 !12 = !DILocation(line: 5, column: 17, scope: !4)
93 !13 = !DILocation(line: 5, column: 16, scope: !4)
94 !14 = !DILocation(line: 5, column: 7, scope: !4)
95 !15 = !DILocation(line: 5, column: 14, scope: !4)
96 !16 = distinct !{!16, !17, !18}
97 !17 = !{!"llvm.loop.interleave.count", i32 1}
98 !18 = !{!"llvm.loop.unroll.disable"}
99 !19 = !DILocation(line: 6, column: 1, scope: !4)
100 !20 = !DILocation(line: 11, column: 23, scope: !6)
101 !21 = !DILocation(line: 11, column: 3, scope: !6)
102 !22 = !DILocation(line: 12, column: 17, scope: !6)
103 !23 = !DILocation(line: 12, column: 16, scope: !6)
104 !24 = !DILocation(line: 12, column: 7, scope: !6)
105 !25 = !DILocation(line: 12, column: 14, scope: !6)
106 !26 = distinct !{!26, !18}
107 !27 = !DILocation(line: 13, column: 1, scope: !6)