llvm-mirror/test/DebugInfo/strip-loop-metadata.ll
Teresa Johnson 164ab9b4a4 Enable stripping of multiple DILocation on !llvm.loop metadata
Summary:
I found that stripDebugInfo was still leaving significant amounts of
debug info due to !llvm.loop that contained DILocation after stripping.
The support for stripping debug info on !llvm.loop added in r293377 only
removes a single DILocation. Enhance that to remove all DILocation from
!llvm.loop.

Reviewers: hfinkel, aprantl, dsanders

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D31117

llvm-svn: 298213
2017-03-19 13:54:57 +00:00

116 lines
4.0 KiB
LLVM

; RUN: opt -S -strip-debug < %s | FileCheck %s
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx10.12.0"
; CHECK-LABEL: _Z5test1v
; CHECK-NOT: br {{.*}} !llvm.loop
define void @_Z5test1v() !dbg !7 {
entry:
br label %while.body, !dbg !9
while.body:
call void @_Z3barv(), !dbg !10
br label %while.body, !dbg !11, !llvm.loop !13
return:
ret void, !dbg !14
}
declare void @_Z3barv()
; CHECK-LABEL: _Z5test2v
; CHECK: br {{.*}} !llvm.loop [[LOOP:![0-9]+]]
define void @_Z5test2v() !dbg !15 {
entry:
br label %while.body, !dbg !16
while.body:
call void @_Z3barv(), !dbg !17
br label %while.body, !dbg !18, !llvm.loop !19
return:
ret void, !dbg !21
}
; CHECK-LABEL: _Z5test3v
; CHECK: br {{.*}} !llvm.loop [[LOOP2:![0-9]+]]
define void @_Z5test3v() !dbg !22 {
entry:
br label %while.body, !dbg !23
while.body:
call void @_Z3barv(), !dbg !24
br label %while.body, !dbg !25, !llvm.loop !26
return:
ret void, !dbg !28
}
; CHECK-LABEL: _Z5test4v
; CHECK-NOT: br {{.*}} !llvm.loop
define void @_Z5test4v() !dbg !30 {
entry:
br label %while.body, !dbg !31
while.body:
call void @_Z3barv(), !dbg !32
br label %while.body, !dbg !33, !llvm.loop !34
return:
ret void, !dbg !36
}
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!3, !4, !5}
!llvm.ident = !{!6}
!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 4.0.0", isOptimized: false, runtimeVersion: 0, emissionKind: LineTablesOnly, enums: !2)
!1 = !DIFile(filename: "test.cpp", directory: "/tmp")
!2 = !{}
!3 = !{i32 2, !"Dwarf Version", i32 4}
!4 = !{i32 2, !"Debug Info Version", i32 3}
!5 = !{i32 1, !"PIC Level", i32 2}
!6 = !{!"clang version 4.0.0"}
!7 = distinct !DISubprogram(name: "test1", scope: !1, file: !1, line: 3, type: !8, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2)
!8 = !DISubroutineType(types: !2)
!9 = !DILocation(line: 4, column: 3, scope: !7)
!10 = !DILocation(line: 5, column: 5, scope: !7)
!11 = !DILocation(line: 4, column: 3, scope: !12)
!12 = !DILexicalBlockFile(scope: !7, file: !1, discriminator: 1)
!13 = distinct !{!13, !9}
!14 = !DILocation(line: 6, column: 1, scope: !7)
!15 = distinct !DISubprogram(name: "test2", scope: !1, file: !1, line: 8, type: !8, isLocal: false, isDefinition: true, scopeLine: 8, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2)
!16 = !DILocation(line: 8, column: 14, scope: !15)
!17 = !DILocation(line: 11, column: 5, scope: !15)
!18 = !DILocation(line: 10, column: 3, scope: !15)
!19 = distinct !{!19, !16, !20}
!20 = !{!"llvm.loop.unroll.enable"}
!21 = !DILocation(line: 12, column: 1, scope: !15)
!22 = distinct !DISubprogram(name: "test3", scope: !1, file: !1, line: 8, type: !8, isLocal: false, isDefinition: true, scopeLine: 8, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2)
!23 = !DILocation(line: 8, column: 14, scope: !22)
!24 = !DILocation(line: 11, column: 5, scope: !22)
!25 = !DILocation(line: 10, column: 3, scope: !22)
!26 = distinct !{!26, !23, !29, !27}
!27 = !{!"llvm.loop.unroll.enable"}
!28 = !DILocation(line: 12, column: 1, scope: !22)
!29 = !DILocation(line: 12, column: 1, scope: !22)
!30 = distinct !DISubprogram(name: "test4", scope: !1, file: !1, line: 8, type: !8, isLocal: false, isDefinition: true, scopeLine: 8, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2)
!31 = !DILocation(line: 8, column: 14, scope: !30)
!32 = !DILocation(line: 11, column: 5, scope: !30)
!33 = !DILocation(line: 10, column: 3, scope: !30)
!34 = distinct !{!34, !31, !35}
!35 = !DILocation(line: 12, column: 1, scope: !30)
!36 = !DILocation(line: 12, column: 1, scope: !30)
; CHECK-NOT: !DICompileUnit
; CHECK-NOT: !DIFile
; CHECK-NOT: !DISubprogram
; CHECK-NOT: !DISubroutineType
; CHECK-NOT: !DILocation
; CHECK-NOT: !DILexicalBlockFile
; CHECK: [[LOOP]] = distinct !{[[LOOP]], [[LOOP_UNROLL:![0-9]+]]}
; CHECK-NEXT: [[LOOP_UNROLL]] = !{!"llvm.loop.unroll.enable"}
; CHECK: [[LOOP2]] = distinct !{[[LOOP2]], [[LOOP_UNROLL]]}
; CHECK-NOT: !DILocation