1 ; RUN: opt < %s -loop-vectorize -S -pass-remarks-missed='loop-vectorize' -pass-remarks-analysis='loop-vectorize' 2>&1 | FileCheck %s 2 ; RUN: opt < %s -passes=loop-vectorize -S -pass-remarks-missed='loop-vectorize' -pass-remarks-analysis='loop-vectorize' 2>&1 | FileCheck %s 3 4 ; CHECK: remark: source.c:2:8: loop not vectorized: store that is conditionally executed prevents vectorization 5 6 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 7 target triple = "x86_64-apple-macosx10.9.0" 8 9 ; Function Attrs: nounwind ssp uwtable 10 define void @conditional_store(i32* noalias nocapture %indices) #0 !dbg !4 { 11 entry: 12 br label %for.body, !dbg !10 13 14 for.body: ; preds = %for.inc, %entry 15 %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.inc ] 16 %arrayidx = getelementptr inbounds i32, i32* %indices, i64 %indvars.iv, !dbg !12 17 %0 = load i32, i32* %arrayidx, align 4, !dbg !12, !tbaa !14 18 %cmp1 = icmp eq i32 %0, 1024, !dbg !12 19 br i1 %cmp1, label %if.then, label %for.inc, !dbg !12 20 21 if.then: ; preds = %for.body 22 store i32 0, i32* %arrayidx, align 4, !dbg !18, !tbaa !14 23 br label %for.inc, !dbg !18 24 25 for.inc: ; preds = %for.body, %if.then 26 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !10 27 %exitcond = icmp eq i64 %indvars.iv.next, 4096, !dbg !10 28 br i1 %exitcond, label %for.end, label %for.body, !dbg !10 29 30 for.end: ; preds = %for.inc 31 ret void, !dbg !19 32 } 33 34 attributes #0 = { nounwind } 35 36 !llvm.dbg.cu = !{!0} 37 !llvm.module.flags = !{!7, !8} 38 !llvm.ident = !{!9} 39 40 !0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.6.0", isOptimized: true, emissionKind: LineTablesOnly, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2) 41 !1 = !DIFile(filename: "source.c", directory: ".") 42 !2 = !{} 43 !4 = distinct !DISubprogram(name: "conditional_store", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 1, file: !1, scope: !5, type: !6, variables: !2) 44 !5 = !DIFile(filename: "source.c", directory: ".") 45 !6 = !DISubroutineType(types: !2) 46 !7 = !{i32 2, !"Dwarf Version", i32 2} 47 !8 = !{i32 2, !"Debug Info Version", i32 3} 48 !9 = !{!"clang version 3.6.0"} 49 !10 = !DILocation(line: 2, column: 8, scope: !11) 50 !11 = distinct !DILexicalBlock(line: 2, column: 3, file: !1, scope: !4) 51 !12 = !DILocation(line: 3, column: 9, scope: !13) 52 !13 = distinct !DILexicalBlock(line: 3, column: 9, file: !1, scope: !11) 53 !14 = !{!15, !15, i64 0} 54 !15 = !{!"int", !16, i64 0} 55 !16 = !{!"omnipotent char", !17, i64 0} 56 !17 = !{!"Simple C/C++ TBAA"} 57 !18 = !DILocation(line: 3, column: 29, scope: !13) 58 !19 = !DILocation(line: 4, column: 1, scope: !4) 59
