llvm.org GIT mirror llvm / 2bb2fc9 test / DebugInfo / Generic / cross-cu-inlining.ll
2bb2fc9

Tree @2bb2fc9 (Download .tar.gz)

cross-cu-inlining.ll @2bb2fc9

111bad3
 
2bb2fc9
 
111bad3
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
def5a05
72c32c6
f2eddd6
111bad3
dd2cb9c
111bad3
 
 
 
 
 
 
 
e4dfe5d
def5a05
111bad3
 
def5a05
 
 
111bad3
 
72c32c6
111bad3
f2eddd6
111bad3
 
dd2cb9c
111bad3
e26d793
 
 
 
 
 
 
 
 
 
111bad3
 
 
5f220be
111bad3
 
 
 
7c9c6ed
111bad3
 
 
e56023a
7c9c6ed
111bad3
 
 
 
 
 
 
5f220be
111bad3
 
 
e56023a
7c9c6ed
111bad3
 
 
 
 
02474a3
111bad3
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
4eeaa0d
e56023a
1ef70ff
4eeaa0d
e56023a
 
1ef70ff
e56023a
4eeaa0d
e56023a
4eeaa0d
e56023a
 
1ef70ff
 
b056aa7
1ef70ff
e56023a
bf2040f
b0d0a65
bf2040f
b0d0a65
e56023a
 
 
 
111bad3
; REQUIRES: object-emission

; RUN: %llc_dwarf -O0 -filetype=obj -dwarf-linkage-names=All < %s | llvm-dwarfdump -debug-dump=info - | FileCheck -implicit-check-not=DW_TAG %s
; RUN: %llc_dwarf -dwarf-accel-tables=Enable -dwarf-linkage-names=All -O0 -filetype=obj < %s | llvm-dwarfdump - | FileCheck --check-prefix=CHECK-ACCEL --check-prefix=CHECK %s

; Build from source:
; $ clang++ a.cpp b.cpp -g -c -emit-llvm
; $ llvm-link a.bc b.bc -o ab.bc
; $ opt -inline ab.bc -o ab-opt.bc
; $ cat a.cpp
; extern int i;
; int func(int);
; int main() {
;   return func(i);
; }
; $ cat b.cpp
; int __attribute__((always_inline)) func(int x) {
;   return x * 2;
; }

; Ensure that func inlined into main is described and references the abstract
; definition in b.cpp's CU.

; CHECK: DW_TAG_compile_unit
; CHECK:   DW_AT_name {{.*}} "a.cpp"
; CHECK:   DW_TAG_subprogram
; CHECK:     DW_AT_type [DW_FORM_ref_addr] (0x00000000[[INT:.*]])
; CHECK:     0x[[INLINED:[0-9a-f]*]]:{{.*}}DW_TAG_inlined_subroutine
; CHECK:       DW_AT_abstract_origin {{.*}}[[ABS_FUNC:........]] "_Z4funci"
; CHECK:       DW_TAG_formal_parameter
; CHECK:         DW_AT_abstract_origin {{.*}}[[ABS_VAR:........]] "x"

; Check the abstract definition is in the 'b.cpp' CU and doesn't contain any
; concrete information (address range or variable location)
; CHECK: DW_TAG_compile_unit
; CHECK:   DW_AT_name {{.*}} "b.cpp"
; CHECK: 0x[[ABS_FUNC]]: DW_TAG_subprogram
; CHECK-NOT: DW_AT_low_pc
; CHECK: 0x[[ABS_VAR]]: DW_TAG_formal_parameter
; CHECK-NOT: DW_AT_location
; CHECK: DW_AT_type [DW_FORM_ref4] {{.*}} {0x[[INT]]}
; CHECK-NOT: DW_AT_location

; CHECK: 0x[[INT]]: DW_TAG_base_type
; CHECK:   DW_AT_name {{.*}} "int"

; Check the concrete out of line definition references the abstract and
; provides the address range and variable location
; CHECK: 0x[[FUNC:[0-9a-f]*]]{{.*}}DW_TAG_subprogram
; CHECK:   DW_AT_low_pc
; CHECK:   DW_AT_abstract_origin {{.*}} {0x[[ABS_FUNC]]} "_Z4funci"
; CHECK:   DW_TAG_formal_parameter
; CHECK:     DW_AT_location
; CHECK:     DW_AT_abstract_origin {{.*}} {0x[[ABS_VAR]]} "x"

; Check that both the inline and the non out of line version of func are
; correctly referenced in the accelerator table. Before r221837, the one
; in the second compilation unit had a wrong offset
; CHECK-ACCEL: .apple_names contents:
; CHECK-ACCEL: Name{{.*}}"func"
; CHECK-ACCEL-NOT: Name
; CHECK-ACCEL: Atom[0]{{.*}}[[INLINED]]
; CHECK-ACCEL-NOT: Name
; CHECK-ACCEL: Atom[0]{{.*}}[[FUNC]]

@i = external global i32

; Function Attrs: uwtable
define i32 @main() #0 !dbg !4 {
entry:
  %x.addr.i = alloca i32, align 4
  %retval = alloca i32, align 4
  store i32 0, i32* %retval
  %0 = load i32, i32* @i, align 4, !dbg !19
  %1 = bitcast i32* %x.addr.i to i8*
  call void @llvm.lifetime.start(i64 4, i8* %1)
  store i32 %0, i32* %x.addr.i, align 4
  call void @llvm.dbg.declare(metadata i32* %x.addr.i, metadata !120, metadata !DIExpression()), !dbg !21
  %2 = load i32, i32* %x.addr.i, align 4, !dbg !22
  %mul.i = mul nsw i32 %2, 2, !dbg !22
  %3 = bitcast i32* %x.addr.i to i8*, !dbg !22
  call void @llvm.lifetime.end(i64 4, i8* %3), !dbg !22
  ret i32 %mul.i, !dbg !19
}

; Function Attrs: alwaysinline nounwind uwtable
define i32 @_Z4funci(i32 %x) #1 !dbg !12 {
entry:
  %x.addr = alloca i32, align 4
  store i32 %x, i32* %x.addr, align 4
  call void @llvm.dbg.declare(metadata i32* %x.addr, metadata !20, metadata !DIExpression()), !dbg !23
  %0 = load i32, i32* %x.addr, align 4, !dbg !24
  %mul = mul nsw i32 %0, 2, !dbg !24
  ret i32 %mul, !dbg !24
}

; Function Attrs: nounwind readnone
declare void @llvm.dbg.declare(metadata, metadata, metadata) #2

; Function Attrs: nounwind
declare void @llvm.lifetime.start(i64, i8* nocapture) #3

; Function Attrs: nounwind
declare void @llvm.lifetime.end(i64, i8* nocapture) #3

attributes #0 = { 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 = { alwaysinline 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 #2 = { nounwind readnone }
attributes #3 = { nounwind }

!llvm.dbg.cu = !{!0, !9}
!llvm.module.flags = !{!16, !17}
!llvm.ident = !{!18, !18}

!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
!1 = !DIFile(filename: "a.cpp", directory: "/tmp/dbginfo")
!2 = !{}
!4 = distinct !DISubprogram(name: "main", line: 3, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 3, file: !1, scope: !5, type: !6, variables: !2)
!5 = !DIFile(filename: "a.cpp", directory: "/tmp/dbginfo")
!6 = !DISubroutineType(types: !7)
!7 = !{!8}
!8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!9 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: FullDebug, file: !10, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
!10 = !DIFile(filename: "b.cpp", directory: "/tmp/dbginfo")
!12 = distinct !DISubprogram(name: "func", linkageName: "_Z4funci", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !9, scopeLine: 1, file: !10, scope: !13, type: !14, variables: !2)
!13 = !DIFile(filename: "b.cpp", directory: "/tmp/dbginfo")
!14 = !DISubroutineType(types: !15)
!15 = !{!8, !8}
!16 = !{i32 2, !"Dwarf Version", i32 4}
!17 = !{i32 2, !"Debug Info Version", i32 3}
!18 = !{!"clang version 3.5.0 "}
!19 = !DILocation(line: 4, scope: !4)
!20 = !DILocalVariable(name: "x", line: 1, arg: 1, scope: !12, file: !13, type: !8)

!120 = !DILocalVariable(name: "x", line: 1, arg: 1, scope: !12, file: !13, type: !8)

!21 = !DILocation(line: 1, scope: !12, inlinedAt: !19)
!22 = !DILocation(line: 2, scope: !12, inlinedAt: !19)
!23 = !DILocation(line: 1, scope: !12)
!24 = !DILocation(line: 2, scope: !12)