114 lines
5.8 KiB
LLVM
114 lines
5.8 KiB
LLVM
; RUN: opt < %s -loop-vectorize -pass-remarks-analysis='loop-vectorize' -mtriple=x86_64-unknown-linux -S 2>&1 | FileCheck %s
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; Verify analysis remarks are generated when interleaving is not beneficial.
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; CHECK: remark: vectorization-remarks-profitable.c:5:17: the cost-model indicates that vectorization is not beneficial
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; 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
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; CHECK: remark: vectorization-remarks-profitable.c:12:17: the cost-model indicates that vectorization is not beneficial
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; CHECK: remark: vectorization-remarks-profitable.c:12:17: the cost-model indicates that interleaving is not beneficial
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; First loop.
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; #pragma clang loop interleave(disable) unroll(disable)
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; for(int i = 0; i < n; i++) {
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; out[i] = *in[i];
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; }
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; Second loop.
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; #pragma clang loop unroll(disable)
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; for(int i = 0; i < n; i++) {
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; out[i] = *in[i];
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; }
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; ModuleID = 'vectorization-remarks-profitable.ll'
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.10.0"
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; Function Attrs: nounwind uwtable
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define void @do_not_interleave(float** noalias nocapture readonly %in, float* noalias nocapture %out, i32 %size) #0 !dbg !4 {
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entry:
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%cmp.4 = icmp eq i32 %size, 0, !dbg !10
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br i1 %cmp.4, label %for.end, label %for.body.preheader, !dbg !11
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for.body.preheader: ; preds = %entry
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br label %for.body, !dbg !12
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for.body: ; preds = %for.body.preheader, %for.body
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%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %for.body.preheader ]
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%arrayidx = getelementptr inbounds float*, float** %in, i64 %indvars.iv, !dbg !12
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%0 = bitcast float** %arrayidx to i32**, !dbg !12
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%1 = load i32*, i32** %0, align 8, !dbg !12
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%2 = load i32, i32* %1, align 4, !dbg !13
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%arrayidx2 = getelementptr inbounds float, float* %out, i64 %indvars.iv, !dbg !14
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%3 = bitcast float* %arrayidx2 to i32*, !dbg !15
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store i32 %2, i32* %3, align 4, !dbg !15
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !11
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%lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !11
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%exitcond = icmp eq i32 %lftr.wideiv, %size, !dbg !11
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br i1 %exitcond, label %for.end.loopexit, label %for.body, !dbg !11, !llvm.loop !16
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for.end.loopexit: ; preds = %for.body
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br label %for.end, !dbg !19
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for.end: ; preds = %for.end.loopexit, %entry
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ret void, !dbg !19
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}
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; Function Attrs: nounwind uwtable
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define void @interleave_not_profitable(float** noalias nocapture readonly %in, float* noalias nocapture %out, i32 %size) #0 !dbg !6 {
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entry:
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%cmp.4 = icmp eq i32 %size, 0, !dbg !20
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br i1 %cmp.4, label %for.end, label %for.body, !dbg !21
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for.body: ; preds = %entry, %for.body
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%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
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%arrayidx = getelementptr inbounds float*, float** %in, i64 %indvars.iv, !dbg !22
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%0 = bitcast float** %arrayidx to i32**, !dbg !22
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%1 = load i32*, i32** %0, align 8, !dbg !22
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%2 = load i32, i32* %1, align 4, !dbg !23
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%arrayidx2 = getelementptr inbounds float, float* %out, i64 %indvars.iv, !dbg !24
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%3 = bitcast float* %arrayidx2 to i32*, !dbg !25
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store i32 %2, i32* %3, align 4, !dbg !25
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !21
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%lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !21
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%exitcond = icmp eq i32 %lftr.wideiv, %size, !dbg !21
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br i1 %exitcond, label %for.end, label %for.body, !dbg !21, !llvm.loop !26
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for.end: ; preds = %for.body, %entry
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ret void, !dbg !27
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}
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attributes #0 = { nounwind 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-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" }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!7, !8}
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!llvm.ident = !{!9}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.8.0 (trunk 250016)", isOptimized: false, runtimeVersion: 0, emissionKind: 2, enums: !2, subprograms: !3)
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!1 = !DIFile(filename: "vectorization-remarks-profitable.c", directory: "")
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!2 = !{}
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!3 = !{!4, !6}
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!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, variables: !2)
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!5 = !DISubroutineType(types: !2)
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!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, variables: !2)
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!7 = !{i32 2, !"Dwarf Version", i32 4}
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!8 = !{i32 2, !"Debug Info Version", i32 3}
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!9 = !{!"clang version 3.8.0 (trunk 250016)"}
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!10 = !DILocation(line: 4, column: 23, scope: !4)
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!11 = !DILocation(line: 4, column: 3, scope: !4)
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!12 = !DILocation(line: 5, column: 17, scope: !4)
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!13 = !DILocation(line: 5, column: 16, scope: !4)
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!14 = !DILocation(line: 5, column: 7, scope: !4)
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!15 = !DILocation(line: 5, column: 14, scope: !4)
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!16 = distinct !{!16, !17, !18}
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!17 = !{!"llvm.loop.interleave.count", i32 1}
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!18 = !{!"llvm.loop.unroll.disable"}
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!19 = !DILocation(line: 6, column: 1, scope: !4)
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!20 = !DILocation(line: 11, column: 23, scope: !6)
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!21 = !DILocation(line: 11, column: 3, scope: !6)
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!22 = !DILocation(line: 12, column: 17, scope: !6)
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!23 = !DILocation(line: 12, column: 16, scope: !6)
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!24 = !DILocation(line: 12, column: 7, scope: !6)
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!25 = !DILocation(line: 12, column: 14, scope: !6)
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!26 = distinct !{!26, !18}
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!27 = !DILocation(line: 13, column: 1, scope: !6)
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