1 ; FIXME: Fix machine verifier issues and remove -verify-machineinstrs=0. PR39452.
2 ; RUN: llc -stop-before=finalize-isel -pre-RA-sched=linearize -verify-machineinstrs=0 < %s | FileCheck %s
3 source_filename = "linear-dbg-value.ll"
5 ; Function Attrs: nounwind readonly uwtable
6 define i32 @foo(i32* nocapture readonly %a, i32 %N) local_unnamed_addr #0 !dbg !6 {
8 %cmp6 = icmp sgt i32 %N, 0, !dbg !11
9 br i1 %cmp6, label %for.body.preheader, label %for.cond.cleanup, !dbg !15
11 for.body.preheader: ; preds = %entry
12 %wide.trip.count = zext i32 %N to i64
13 br label %for.body, !dbg !17
15 for.cond.cleanup.loopexit: ; preds = %for.body
16 br label %for.cond.cleanup, !dbg !19
18 for.cond.cleanup: ; preds = %for.cond.cleanup.loopexit, %entry
19 %x.0.lcssa = phi i32 [ 0, %entry ], [ %add, %for.cond.cleanup.loopexit ]
20 ret i32 %x.0.lcssa, !dbg !19
22 for.body: ; preds = %for.body, %for.body.preheader
23 ; CHECK: ![[X:[0-9]+]] = !DILocalVariable(name: "x",
24 ; CHECK-LABEL: bb.3.for.body:
25 ; CHECK: DBG_VALUE {{.*}} ![[X]], !DIExpression()
26 ; CHECK: DBG_VALUE {{.*}} ![[X]], !DIExpression()
27 %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %for.body.preheader ]
28 %x.07 = phi i32 [ %add, %for.body ], [ 0, %for.body.preheader ]
29 %arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv, !dbg !17
30 %0 = load i32, i32* %arrayidx, align 4, !dbg !17
31 %add = add nsw i32 %0, %x.07, !dbg !17
32 call void @llvm.dbg.value(metadata i32 %add, metadata !9, metadata !DIExpression()), !dbg !20
33 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !21
34 call void @llvm.dbg.value(metadata i32 %add, metadata !9, metadata !DIExpression()), !dbg !20
35 %exitcond = icmp eq i64 %indvars.iv.next, %wide.trip.count, !dbg !11
36 br i1 %exitcond, label %for.cond.cleanup.loopexit, label %for.body, !dbg !15
39 ; Function Attrs: nounwind readnone speculatable
40 declare void @llvm.dbg.value(metadata, metadata, metadata) #1
42 attributes #0 = { nounwind readonly uwtable }
43 attributes #1 = { nounwind readnone speculatable }
46 !llvm.module.flags = !{!3, !4}
49 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 4.0.1 ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
50 !1 = !DIFile(filename: "foo.c", directory: "/tmp")
52 !3 = !{i32 2, !"Dwarf Version", i32 4}
53 !4 = !{i32 2, !"Debug Info Version", i32 3}
54 !5 = !{!"clang version 4.0.1 "}
55 !6 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 2, type: !7, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !8)
56 !7 = !DISubroutineType(types: !2)
58 !9 = !DILocalVariable(name: "x", scope: !6, file: !1, line: 3, type: !10)
59 !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
60 !11 = !DILocation(line: 4, scope: !12)
61 !12 = !DILexicalBlockFile(scope: !13, file: !1, discriminator: 1)
62 !13 = distinct !DILexicalBlock(scope: !14, file: !1, line: 4, column: 3)
63 !14 = distinct !DILexicalBlock(scope: !6, file: !1, line: 4, column: 3)
64 !15 = !DILocation(line: 4, scope: !16)
65 !16 = !DILexicalBlockFile(scope: !14, file: !1, discriminator: 1)
66 !17 = !DILocation(line: 5, scope: !18)
67 !18 = distinct !DILexicalBlock(scope: !13, file: !1, line: 4, column: 31)
68 !19 = !DILocation(line: 7, scope: !6)
69 !20 = !DILocation(line: 3, scope: !6)
70 !21 = !DILocation(line: 4, scope: !22)
71 !22 = !DILexicalBlockFile(scope: !13, file: !1, discriminator: 3)