llvm/test/DebugInfo/X86/lexical-block-file.ll

; RUN: llc -mtriple=x86_64-unknown-linux-gnu -filetype=obj -O0 < %s  | llvm-dwarfdump -debug-dump=info - | FileCheck %s

;; This test checks that Inlined DILexicalBlockFile with local decl entry is
;; skipped and only one DW_TAG_lexical_block is generated.
;;
;; This test was generated by running following command:
;; clang -cc1 -O0 -debug-info-kind=limited -emit-llvm test.cpp
;; Where test.cpp
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;
;;static __attribute__((always_inline)) int bar() {
;;  {
;;#line 2 "test.h"
;;    static int x = 0;
;;    return x;
;;  }
;;}
;;int foo() {
;;  {
;;    return bar();
;;  }
;;}
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

;; Abstract "bar" function
; CHECK:    [[Offset_bar:0x[0-9abcdef]+]]: DW_TAG_subprogram
; CHECK-NOT: {{DW_TAG|NULL}}
; CHECK:      DW_AT_name {{.*}} "bar"
; CHECK:      DW_AT_inline

; CHECK-NOT: {{DW_TAG|NULL}}
; CHECK:        [[Offset_LB:0x[0-9abcdef]+]]: DW_TAG_lexical_block

; CHECK-NOT: {{DW_TAG|NULL}}
; CHECK:        [[Offset_x:0x[0-9abcdef]+]]: DW_TAG_variable
; CHECK-NOT: {{DW_TAG|NULL}}
; CHECK:          DW_AT_name {{.*}} "x"


; CHECK:    DW_TAG_subprogram
; CHECK-NOT: {{DW_TAG|NULL}}
; CHECK:      DW_AT_name {{.*}} "foo"
; CHECK-NOT: {{NULL}}

;; Inlined "bar" function
; CHECK:      DW_TAG_inlined_subroutine
; CHECK-NEXT:   DW_AT_abstract_origin {{.*}} {[[Offset_bar]]}

; CHECK-NOT: {{DW_TAG|NULL}}
; CHECK:        DW_TAG_lexical_block
; CHECK-NOT: {{DW_TAG|NULL}}
; CHECK:       DW_AT_abstract_origin {{.*}} {[[Offset_LB]]}


@bar.x = internal global i32 0, align 4

; Function Attrs: nounwind
define i32 @foo() #0 !dbg !4 {
entry:
  %0 = load i32, i32* @bar.x, align 4, !dbg !16
  ret i32 %0, !dbg !19
}

attributes #0 = { nounwind }

!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!14}
!llvm.ident = !{!15}

!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.9.0 (trunk 263423)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !10)
!1 = !DIFile(filename: "test.c", directory: "/")
!2 = !{}
!4 = distinct !DISubprogram(name: "foo", scope: !5, file: !5, line: 6, type: !6, isLocal: false, isDefinition: true, scopeLine: 6, isOptimized: false, unit: !0, variables: !2)
!5 = !DIFile(filename: "test.h", directory: "/")
!6 = !DISubroutineType(types: !7)
!7 = !{!8}
!8 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!9 = distinct !DISubprogram(name: "bar", scope: !1, file: !1, line: 2, type: !6, isLocal: true, isDefinition: true, scopeLine: 2, isOptimized: false, unit: !0, variables: !2)
!10 = !{!11}
!11 = !DIGlobalVariable(name: "x", scope: !12, file: !5, line: 2, type: !8, isLocal: true, isDefinition: true, variable: i32* @bar.x)
!12 = !DILexicalBlockFile(scope: !13, file: !5, discriminator: 0)
!13 = distinct !DILexicalBlock(scope: !9, file: !1, line: 3)
!14 = !{i32 2, !"Debug Info Version", i32 3}
!15 = !{!"clang version 3.9.0 (trunk 263423)"}
!16 = !DILocation(line: 3, scope: !12, inlinedAt: !17)
!17 = distinct !DILocation(line: 8, scope: !18)
!18 = distinct !DILexicalBlock(scope: !4, file: !5, line: 7)
!19 = !DILocation(line: 8, scope: !18)