1; RUN: opt < %s -passes=loop-vectorize -pass-remarks-missed='loop-vectorize' -mtriple=x86_64-unknown-linux -S 2>&1 | FileCheck %s 2 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 8 9; First loop. 10; #pragma clang loop interleave(disable) unroll(disable) 11; for(int i = 0; i < n; i++) { 12; out[i] = *in[i]; 13; } 14 15; Second loop. 16; #pragma clang loop unroll(disable) 17; for(int i = 0; i < n; i++) { 18; out[i] = *in[i]; 19; } 20 21; ModuleID = 'vectorization-remarks-profitable.ll' 22target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 23target triple = "x86_64-apple-macosx10.10.0" 24 25; Function Attrs: nounwind uwtable 26define void @do_not_interleave(ptr noalias nocapture readonly %in, ptr noalias nocapture %out, i32 %size) #0 !dbg !4 { 27entry: 28 %cmp.4 = icmp eq i32 %size, 0, !dbg !10 29 br i1 %cmp.4, label %for.end, label %for.body.preheader, !dbg !11 30 31for.body.preheader: ; preds = %entry 32 br label %for.body, !dbg !12 33 34for.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 45 46for.end.loopexit: ; preds = %for.body 47 br label %for.end, !dbg !19 48 49for.end: ; preds = %for.end.loopexit, %entry 50 ret void, !dbg !19 51} 52 53; Function Attrs: nounwind uwtable 54define void @interleave_not_profitable(ptr noalias nocapture readonly %in, ptr noalias nocapture %out, i32 %size) #0 !dbg !6 { 55entry: 56 %cmp.4 = icmp eq i32 %size, 0, !dbg !20 57 br i1 %cmp.4, label %for.end, label %for.body, !dbg !21 58 59for.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 70 71for.end: ; preds = %for.body, %entry 72 ret void, !dbg !27 73} 74 75attributes #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" } 76 77!llvm.dbg.cu = !{!0} 78!llvm.module.flags = !{!7, !8} 79!llvm.ident = !{!9} 80 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: "") 83!2 = !{} 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) 108 109