forked from OSchip/llvm-project
183 lines
7.5 KiB
LLVM
183 lines
7.5 KiB
LLVM
; REQUIRES: object-emission
|
|
|
|
; RUN: %llc_dwarf -O0 -filetype=obj < %s | llvm-dwarfdump -debug-dump=info - | FileCheck %s
|
|
|
|
; The formal parameter 'b' for Function 'x' when inlined within 'a' is lost on
|
|
; mips and powerpc64 (and on x86_64 at at least -O2). Presumably this is a
|
|
; SelectionDAG issue (do mips/powerpc64 use FastISel?).
|
|
; XFAIL: mips, powerpc64, s390x, sparc
|
|
|
|
; Build from the following source with clang -O2.
|
|
|
|
; The important details are that 'x's abstract definition is first built during
|
|
; the definition of 'b', where the parameter to 'x' is constant and so 'x's 's'
|
|
; variable is optimized away. No abstract definition DIE for 's' is constructed.
|
|
; Then, during 'a' emission, the abstract DbgVariable for 's' is created, but
|
|
; the abstract DIE isn't (since the abstract definition for 'b' is already
|
|
; built). This results in 's' inlined in 'a' being emitted with its name, line,
|
|
; file there, rather than referencing an abstract definition.
|
|
|
|
; extern int t;
|
|
;
|
|
; void f(int);
|
|
;
|
|
; inline void x(bool b) {
|
|
; if (b) {
|
|
; int s = t;
|
|
; f(s);
|
|
; }
|
|
; f(0);
|
|
; }
|
|
;
|
|
; void b() {
|
|
; x(false);
|
|
; }
|
|
;
|
|
; void a(bool u) {
|
|
; x(u);
|
|
; }
|
|
|
|
; CHECK: [[X_DECL:.*]]: DW_TAG_subprogram
|
|
; CHECK-NOT: DW_TAG
|
|
; CHECK: DW_AT_name {{.*}} "x"
|
|
; CHECK-NOT: {{DW_TAG|NULL}}
|
|
; CHECK: DW_TAG_formal_parameter
|
|
; CHECK-NOT: DW_TAG
|
|
; CHECK: DW_AT_name {{.*}} "b"
|
|
; CHECK-NOT: {{DW_TAG|NULL}}
|
|
; CHECK: DW_TAG_lexical_block
|
|
; CHECK-NOT: {{DW_TAG|NULL}}
|
|
; CHECK: DW_TAG_variable
|
|
; CHECK-NOT: DW_TAG
|
|
; CHECK: DW_AT_name {{.*}} "s"
|
|
|
|
; CHECK: DW_TAG_subprogram
|
|
; CHECK-NOT: DW_TAG
|
|
; CHECK: DW_AT_name {{.*}} "b"
|
|
; CHECK-NOT: {{DW_TAG|NULL}}
|
|
; CHECK: DW_TAG_inlined_subroutine
|
|
; CHECK-NOT: DW_TAG
|
|
; CHECK: DW_AT_abstract_origin {{.*}} {[[X_DECL]]}
|
|
; CHECK-NOT: {{DW_TAG|NULL}}
|
|
; CHECK: DW_TAG_formal_parameter
|
|
; CHECK-NOT: DW_TAG
|
|
; CHECK: DW_AT_abstract_origin {{.*}} "b"
|
|
; Notice 'x's local variable 's' is missing. Not necessarily a bug here,
|
|
; since it's been optimized entirely away and it should be described in
|
|
; abstract subprogram.
|
|
; CHECK-NOT: DW_TAG
|
|
; CHECK: NULL
|
|
; CHECK-NOT: DW_TAG
|
|
; CHECK: NULL
|
|
|
|
; CHECK: DW_TAG_subprogram
|
|
; CHECK-NOT: DW_TAG
|
|
; CHECK: DW_AT_name {{.*}} "a"
|
|
; CHECK-NOT: {{DW_TAG|NULL}}
|
|
; CHECK: DW_TAG_formal_parameter
|
|
; CHECK-NOT: {{DW_TAG|NULL}}
|
|
; CHECK: DW_TAG_inlined_subroutine
|
|
; CHECK-NOT: DW_TAG
|
|
; CHECK: DW_AT_abstract_origin {{.*}} {[[X_DECL]]}
|
|
; CHECK-NOT: {{DW_TAG|NULL}}
|
|
; FIXME: This formal parameter goes missing at least at -O2 (& on
|
|
; mips/powerpc), maybe before that. Perhaps SelectionDAG is to blame (and
|
|
; fastisel succeeds).
|
|
; CHECK: DW_TAG_formal_parameter
|
|
; CHECK-NOT: DW_TAG
|
|
; CHECK: DW_AT_abstract_origin {{.*}} "b"
|
|
|
|
; CHECK-NOT: {{DW_TAG|NULL}}
|
|
; CHECK: DW_TAG_lexical_block
|
|
; CHECK-NOT: {{DW_TAG|NULL}}
|
|
; CHECK: DW_TAG_variable
|
|
; CHECK-NOT: DW_TAG
|
|
; CHECK: DW_AT_abstract_origin {{.*}} "s"
|
|
|
|
@t = external global i32
|
|
|
|
; Function Attrs: uwtable
|
|
define void @_Z1bv() #0 {
|
|
entry:
|
|
tail call void @llvm.dbg.value(metadata i1 false, i64 0, metadata !25, metadata !DIExpression()), !dbg !27
|
|
tail call void @_Z1fi(i32 0), !dbg !28
|
|
ret void, !dbg !29
|
|
}
|
|
|
|
; Function Attrs: uwtable
|
|
define void @_Z1ab(i1 zeroext %u) #0 {
|
|
entry:
|
|
tail call void @llvm.dbg.value(metadata i1 %u, i64 0, metadata !13, metadata !DIExpression()), !dbg !30
|
|
tail call void @llvm.dbg.value(metadata i1 %u, i64 0, metadata !31, metadata !DIExpression()), !dbg !33
|
|
br i1 %u, label %if.then.i, label %_Z1xb.exit, !dbg !34
|
|
|
|
if.then.i: ; preds = %entry
|
|
%0 = load i32, i32* @t, align 4, !dbg !35, !tbaa !36
|
|
tail call void @llvm.dbg.value(metadata i32 %0, i64 0, metadata !40, metadata !DIExpression()), !dbg !35
|
|
tail call void @_Z1fi(i32 %0), !dbg !41
|
|
br label %_Z1xb.exit, !dbg !42
|
|
|
|
_Z1xb.exit: ; preds = %entry, %if.then.i
|
|
tail call void @_Z1fi(i32 0), !dbg !43
|
|
ret void, !dbg !44
|
|
}
|
|
|
|
declare void @_Z1fi(i32) #1
|
|
|
|
; Function Attrs: nounwind readnone
|
|
declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #2
|
|
|
|
attributes #0 = { uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "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"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
|
|
attributes #2 = { nounwind readnone }
|
|
|
|
!llvm.dbg.cu = !{!0}
|
|
!llvm.module.flags = !{!21, !22}
|
|
!llvm.ident = !{!23}
|
|
|
|
!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 ", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
|
|
!1 = !DIFile(filename: "missing-abstract-variables.cc", directory: "/tmp/dbginfo")
|
|
!2 = !{}
|
|
!3 = !{!4, !8, !14}
|
|
!4 = !DISubprogram(name: "b", linkageName: "_Z1bv", line: 13, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 13, file: !1, scope: !5, type: !6, function: void ()* @_Z1bv, variables: !2)
|
|
!5 = !DIFile(filename: "missing-abstract-variables.cc", directory: "/tmp/dbginfo")
|
|
!6 = !DISubroutineType(types: !7)
|
|
!7 = !{null}
|
|
!8 = !DISubprogram(name: "a", linkageName: "_Z1ab", line: 17, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 17, file: !1, scope: !5, type: !9, function: void (i1)* @_Z1ab, variables: !12)
|
|
!9 = !DISubroutineType(types: !10)
|
|
!10 = !{null, !11}
|
|
!11 = !DIBasicType(tag: DW_TAG_base_type, name: "bool", size: 8, align: 8, encoding: DW_ATE_boolean)
|
|
!12 = !{!13}
|
|
!13 = !DILocalVariable(name: "u", line: 17, arg: 1, scope: !8, file: !5, type: !11)
|
|
!14 = !DISubprogram(name: "x", linkageName: "_Z1xb", line: 5, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 5, file: !1, scope: !5, type: !9, variables: !15)
|
|
!15 = !{!16, !17}
|
|
!16 = !DILocalVariable(name: "b", line: 5, arg: 1, scope: !14, file: !5, type: !11)
|
|
!17 = !DILocalVariable(name: "s", line: 7, scope: !18, file: !5, type: !20)
|
|
!18 = distinct !DILexicalBlock(line: 6, column: 0, file: !1, scope: !19)
|
|
!19 = distinct !DILexicalBlock(line: 6, column: 0, file: !1, scope: !14)
|
|
!20 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
|
|
!21 = !{i32 2, !"Dwarf Version", i32 4}
|
|
!22 = !{i32 2, !"Debug Info Version", i32 3}
|
|
!23 = !{!"clang version 3.5.0 "}
|
|
!24 = !{i1 false}
|
|
!25 = !DILocalVariable(name: "b", line: 5, arg: 1, scope: !14, file: !5, type: !11)
|
|
!26 = !DILocation(line: 14, scope: !4)
|
|
!27 = !DILocation(line: 5, scope: !14, inlinedAt: !26)
|
|
!28 = !DILocation(line: 10, scope: !14, inlinedAt: !26)
|
|
!29 = !DILocation(line: 15, scope: !4)
|
|
!30 = !DILocation(line: 17, scope: !8)
|
|
!31 = !DILocalVariable(name: "b", line: 5, arg: 1, scope: !14, file: !5, type: !11)
|
|
!32 = !DILocation(line: 18, scope: !8)
|
|
!33 = !DILocation(line: 5, scope: !14, inlinedAt: !32)
|
|
!34 = !DILocation(line: 6, scope: !19, inlinedAt: !32)
|
|
!35 = !DILocation(line: 7, scope: !18, inlinedAt: !32)
|
|
!36 = !{!37, !37, i64 0}
|
|
!37 = !{!"int", !38, i64 0}
|
|
!38 = !{!"omnipotent char", !39, i64 0}
|
|
!39 = !{!"Simple C/C++ TBAA"}
|
|
!40 = !DILocalVariable(name: "s", line: 7, scope: !18, file: !5, type: !20)
|
|
!41 = !DILocation(line: 8, scope: !18, inlinedAt: !32)
|
|
!42 = !DILocation(line: 9, scope: !18, inlinedAt: !32)
|
|
!43 = !DILocation(line: 10, scope: !14, inlinedAt: !32)
|
|
!44 = !DILocation(line: 19, scope: !8)
|