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
78
79
80
81
82
83
84
|
; RUN: llc -mtriple=mips-linux-gnu -filetype=asm -asm-verbose=0 -O0 < %s | FileCheck %s
; RUN: llc -mtriple=mips-linux-gnu -filetype=obj -O0 < %s | llvm-dwarfdump -debug-dump=line - | FileCheck %s --check-prefix=INT
; Mips used to generate 'jumpy' debug line info around calls. The address
; calculation for each call to f1() would share the same line info so it would
; emit output of the form:
; .loc $first_call_location
; .. address calculation ..
; .. function call ..
; .. address calculation ..
; .loc $second_call_location
; .. function call ..
; .loc $first_call_location
; .. address calculation ..
; .loc $third_call_location
; .. function call ..
; ...
; which would cause confusing stepping behaviour for the end user.
;
; This test checks that we emit more user friendly debug line info of the form:
; .loc $first_call_location
; .. address calculation ..
; .. function call ..
; .loc $second_call_location
; .. address calculation ..
; .. function call ..
; .loc $third_call_location
; .. address calculation ..
; .. function call ..
; ...
;
; Generated with clang from fn-call-line.c:
; void f1();
; void f2() {
; f1();
; f1();
; }
; CHECK: .loc 1 3 3
; CHECK-NOT: .loc
; CHECK: %call16(f1)
; CHECK-NOT: .loc
; CHECK: .loc 1 4 3
; CHECK-NOT: .loc
; CHECK: %call16(f1)
; INT: {{^}}Address
; INT: -----
; INT-NEXT: 2 0 1 0 0 is_stmt{{$}}
; INT-NEXT: 3 3 1 0 0 is_stmt prologue_end{{$}}
; INT-NEXT: 4 3 1 0 0 is_stmt{{$}}
; Function Attrs: nounwind uwtable
define void @f2() #0 {
entry:
call void (...)* @f1(), !dbg !11
call void (...)* @f1(), !dbg !12
ret void, !dbg !13
}
declare void @f1(...) #1
attributes #0 = { nounwind uwtable "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" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { "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" "unsafe-fp-math"="false" "use-soft-float"="false" }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!8, !9}
!llvm.ident = !{!10}
!0 = !MDCompileUnit(language: DW_LANG_C99, producer: "clang version 3.7.0 (trunk 226641)", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
!1 = !MDFile(filename: "fn-call-line.c", directory: "/tmp/dbginfo")
!2 = !{}
!3 = !{!4}
!4 = !MDSubprogram(name: "f2", line: 2, isLocal: false, isDefinition: true, isOptimized: false, scopeLine: 2, file: !1, scope: !5, type: !6, function: void ()* @f2, variables: !2)
!5 = !MDFile(filename: "fn-call-line.c", directory: "/tmp/dbginfo")
!6 = !MDSubroutineType(types: !7)
!7 = !{null}
!8 = !{i32 2, !"Dwarf Version", i32 4}
!9 = !{i32 2, !"Debug Info Version", i32 3}
!10 = !{!"clang version 3.7.0 (trunk 226641)"}
!11 = !MDLocation(line: 3, column: 3, scope: !4)
!12 = !MDLocation(line: 4, column: 3, scope: !4)
!13 = !MDLocation(line: 5, column: 1, scope: !4)
|
