111 lines
4.9 KiB
LLVM
111 lines
4.9 KiB
LLVM
; RUN: opt -loop-vectorize -force-vector-width=2 -S < %s | FileCheck %s
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;
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; Confirm that the DebugLoc info for the instructions in the middle block of a
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; vectorized loop are correct. The Cmp and Br instructions should map to the
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; same source lines as the Cmp and Br of the scalar loop.
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; CHECK-LABEL: middle.block:
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq {{.*}}!dbg ![[DL:[0-9]+]]
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; CHECK-NEXT: br i1 [[CMP]]{{.*}} !dbg ![[DL]]
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; CHECK: ![[DL]] = !DILocation(line: 6,
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; This IR can be generated by running:
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; clang -g -O2 -emit-llvm -S -mllvm -opt-bisect-limit=68 vec.cpp -o - | opt -loop-vectorize -force-vector-width=2 -S -o vec.ll
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;
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; Where vec.cpp contains:
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;
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; extern int x;
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; extern int y;
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; void a() {
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; const int len = x;
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; int b[len];
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; for(int i = 0; i< len; ++i)
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; b[i] = x;
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;
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; y = b[x] + b[x-5];
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; }
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target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
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@"?x@@3HA" = external dso_local local_unnamed_addr global i32, align 4
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@"?y@@3HA" = external dso_local local_unnamed_addr global i32, align 4
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define dso_local void @"?a@@YAXXZ"() local_unnamed_addr #0 !dbg !8 {
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entry:
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%0 = load i32, i32* @"?x@@3HA", align 4, !dbg !23, !tbaa !24
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%1 = zext i32 %0 to i64, !dbg !28
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%vla = alloca i32, i64 %1, align 16, !dbg !28
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%cmp10 = icmp sgt i32 %0, 0, !dbg !30
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br i1 %cmp10, label %for.body.preheader, label %for.cond.cleanup, !dbg !30
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for.body.preheader:
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br label %for.body, !dbg !31
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for.cond.cleanup.loopexit:
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%idxprom1.phi.trans.insert = sext i32 %0 to i64
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%arrayidx2.phi.trans.insert = getelementptr inbounds i32, i32* %vla, i64 %idxprom1.phi.trans.insert
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%.pre = load i32, i32* %arrayidx2.phi.trans.insert, align 4, !dbg !33, !tbaa !24
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br label %for.cond.cleanup, !dbg !33
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for.cond.cleanup:
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%2 = phi i32 [ %.pre, %for.cond.cleanup.loopexit ], [ undef, %entry ], !dbg !33
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%sub = add nsw i32 %0, -5, !dbg !33
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%idxprom3 = sext i32 %sub to i64, !dbg !33
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%arrayidx4 = getelementptr inbounds i32, i32* %vla, i64 %idxprom3, !dbg !33
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%3 = load i32, i32* %arrayidx4, align 4, !dbg !33, !tbaa !24
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%add = add nsw i32 %3, %2, !dbg !33
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store i32 %add, i32* @"?y@@3HA", align 4, !dbg !33, !tbaa !24
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ret void, !dbg !34
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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 i32, i32* %vla, i64 %indvars.iv, !dbg !31
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store i32 %0, i32* %arrayidx, align 4, !dbg !31, !tbaa !24
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !35
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%exitcond = icmp eq i64 %indvars.iv.next, %1, !dbg !30
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br i1 %exitcond, label %for.cond.cleanup.loopexit, label %for.body, !dbg !30, !llvm.loop !36
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}
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5, !6}
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!llvm.ident = !{!7}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 9.0.0 (https://github.com/llvm/llvm-project.git 045b8544fd2c4e14f7e72e0df2bc681d823b0838)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None)
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!1 = !DIFile(filename: "vec.cpp", directory: "C:\5CUsers\5Cgbhyamso\5Cdev\5Cllvm\5Csamples", checksumkind: CSK_MD5, checksum: "fed997f50117f5514a69caf1c2fb2c49")
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!2 = !{}
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!3 = !{i32 2, !"CodeView", i32 1}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = !{i32 1, !"wchar_size", i32 2}
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!6 = !{i32 7, !"PIC Level", i32 2}
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!7 = !{!"clang version 9.0.0 (https://github.com/llvm/llvm-project.git 045b8544fd2c4e14f7e72e0df2bc681d823b0838)"}
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!8 = distinct !DISubprogram(name: "a", linkageName: "?a@@YAXXZ", scope: !1, file: !1, line: 3, type: !9, scopeLine: 3, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !11)
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!9 = !DISubroutineType(types: !10)
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!10 = !{null}
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!11 = !{!12, !15, !17, !21}
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!12 = !DILocalVariable(name: "len", scope: !8, file: !1, line: 4, type: !13)
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!13 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !14)
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!14 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!15 = !DILocalVariable(name: "__vla_expr0", scope: !8, type: !16, flags: DIFlagArtificial)
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!16 = !DIBasicType(name: "long long unsigned int", size: 64, encoding: DW_ATE_unsigned)
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!17 = !DILocalVariable(name: "b", scope: !8, file: !1, line: 5, type: !18)
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!18 = !DICompositeType(tag: DW_TAG_array_type, baseType: !14, elements: !19)
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!19 = !{!20}
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!20 = !DISubrange(count: !15)
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!21 = !DILocalVariable(name: "i", scope: !22, file: !1, line: 6, type: !14)
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!22 = distinct !DILexicalBlock(scope: !8, file: !1, line: 6)
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!23 = !DILocation(line: 4, scope: !8)
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!24 = !{!25, !25, i64 0}
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!25 = !{!"int", !26, i64 0}
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!26 = !{!"omnipotent char", !27, i64 0}
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!27 = !{!"Simple C++ TBAA"}
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!28 = !DILocation(line: 5, scope: !8)
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!29 = !DILocation(line: 0, scope: !8)
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!30 = !DILocation(line: 6, scope: !22)
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!31 = !DILocation(line: 7, scope: !32)
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!32 = distinct !DILexicalBlock(scope: !22, file: !1, line: 6)
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!33 = !DILocation(line: 9, scope: !8)
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!34 = !DILocation(line: 10, scope: !8)
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!35 = !DILocation(line: 6, scope: !32)
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!36 = distinct !{!36, !30, !37}
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!37 = !DILocation(line: 7, scope: !22)
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