1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
| ; RUN: opt < %s -gvn -S | FileCheck %s
; CHECK: {{^}}for.body:
; CHECK-NEXT: [[VREG1:%[^ ]+]] = phi{{.*}}[[VREG2:%[^ ]+]],{{.*}}%.sink,
; CHECK-NOT: !dbg
; CHECK-SAME: {{$}}
; CHECK: {{^}}for.inc:
; CHECK-NEXT: [[VREG2]] = phi{{.*}}%inc,{{.*}}[[VREG1]]
target triple = "x86_64-unknown-linux-gnu"
@g = external local_unnamed_addr global i32, align 4
; Function Attrs: nounwind uwtable
define void @foo(i32 %x, i32 %y, i32 %z) local_unnamed_addr #0 !dbg !4 {
entry:
%not.tobool = icmp eq i32 %x, 0, !dbg !8
%.sink = zext i1 %not.tobool to i32, !dbg !8
store i32 %.sink, i32* @g, align 4, !tbaa !9
%cmp8 = icmp sgt i32 %y, 0, !dbg !13
br i1 %cmp8, label %for.body.preheader, label %for.end, !dbg !17
for.body.preheader: ; preds = %entry
br label %for.body, !dbg !19
for.body: ; preds = %for.body.preheader, %for.inc
%i.09 = phi i32 [ %inc4, %for.inc ], [ 0, %for.body.preheader ]
%cmp1 = icmp sgt i32 %i.09, %z, !dbg !19
br i1 %cmp1, label %if.then2, label %for.inc, !dbg !21
if.then2: ; preds = %for.body
%0 = load i32, i32* @g, align 4, !dbg !22, !tbaa !9
%inc = add nsw i32 %0, 1, !dbg !22
store i32 %inc, i32* @g, align 4, !dbg !22, !tbaa !9
br label %for.inc, !dbg !23
for.inc: ; preds = %for.body, %if.then2
%inc4 = add nuw nsw i32 %i.09, 1, !dbg !24
%exitcond = icmp ne i32 %inc4, %y, !dbg !13
br i1 %exitcond, label %for.body, label %for.end.loopexit, !dbg !17
for.end.loopexit: ; preds = %for.inc
br label %for.end, !dbg !26
for.end: ; preds = %for.end.loopexit, %entry
ret void, !dbg !26
}
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1)
!1 = !DIFile(filename: "foo.c", directory: "b/")
!2 = !{i32 2, !"Dwarf Version", i32 4}
!3 = !{i32 2, !"Debug Info Version", i32 3}
!4 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 3, type: !5, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: true, unit: !0)
!5 = !DISubroutineType(types: !6)
!6 = !{null, !7, !7, !7}
!7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!8 = !DILocation(line: 4, column: 7, scope: !4)
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !11, i64 0}
!11 = !{!"omnipotent char", !12, i64 0}
!12 = !{!"Simple C/C++ TBAA"}
!13 = !DILocation(line: 10, column: 13, scope: !14)
!14 = !DILexicalBlockFile(scope: !15, file: !1, discriminator: 1)
!15 = distinct !DILexicalBlock(scope: !16, file: !1, line: 10, column: 3)
!16 = distinct !DILexicalBlock(scope: !4, file: !1, line: 10, column: 3)
!17 = !DILocation(line: 10, column: 3, scope: !18)
!18 = !DILexicalBlockFile(scope: !16, file: !1, discriminator: 1)
!19 = !DILocation(line: 11, column: 11, scope: !20)
!20 = distinct !DILexicalBlock(scope: !15, file: !1, line: 11, column: 9)
!21 = !DILocation(line: 11, column: 9, scope: !15)
!22 = !DILocation(line: 12, column: 8, scope: !20)
!23 = !DILocation(line: 12, column: 7, scope: !20)
!24 = !DILocation(line: 10, column: 20, scope: !25)
!25 = !DILexicalBlockFile(scope: !15, file: !1, discriminator: 2)
!26 = !DILocation(line: 13, column: 1, scope: !4)
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!2, !3}
|