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llvm-mirror/test/Transforms/StripSymbols/2010-06-30-StripDebug.ll
Adrian Prantl 7d6813a6c8 Canonicalize the representation of empty an expression in DIGlobalVariableExpression
This change simplifies code that has to deal with
DIGlobalVariableExpression and mirrors how we treat DIExpressions in
debug info intrinsics. Before this change there were two ways of
representing empty expressions on globals, a nullptr and an empty
!DIExpression().

If someone needs to upgrade out-of-tree testcases:
  perl -pi -e 's/(!DIGlobalVariableExpression\(var: ![0-9]*)\)/\1, expr: !DIExpression())/g' <MYTEST.ll>
will catch 95%.

llvm-svn: 312144
2017-08-30 18:06:51 +00:00

34 lines
1.6 KiB
LLVM

; RUN: opt -strip-debug < %s -S | FileCheck %s
; CHECK-NOT: call void @llvm.dbg.value
source_filename = "test/Transforms/StripSymbols/2010-06-30-StripDebug.ll"
@x = common global i32 0, !dbg !0
; Function Attrs: nounwind optsize readnone ssp
define void @foo() #0 !dbg !7 {
entry:
tail call void @llvm.dbg.value(metadata i32 0, metadata !10, metadata !12), !dbg !13
ret void, !dbg !14
}
; Function Attrs: nounwind readnone
declare void @llvm.dbg.value(metadata, metadata, metadata) #1
attributes #0 = { nounwind optsize readnone ssp }
attributes #1 = { nounwind readnone }
!llvm.module.flags = !{!4}
!llvm.dbg.cu = !{!5}
!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
!1 = !DIGlobalVariable(name: "x", scope: !2, file: !2, line: 1, type: !3, isLocal: false, isDefinition: true)
!2 = !DIFile(filename: "b.c", directory: "/tmp")
!3 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!4 = !{i32 1, !"Debug Info Version", i32 3}
!5 = distinct !DICompileUnit(language: DW_LANG_C89, file: !2, producer: "4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, globals: !6)
!6 = !{!0}
!7 = distinct !DISubprogram(name: "foo", linkageName: "foo", scope: !2, file: !2, line: 2, type: !8, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: true, unit: !5)
!8 = !DISubroutineType(types: !9)
!9 = !{null}!10 = !DILocalVariable(name: "y", scope: !11, file: !2, line: 3, type: !3)!11 = distinct !DILexicalBlock(scope: !7, file: !2, line: 2)!12 = !DIExpression()!13 = !DILocation(line: 3, scope: !11)!14 = !DILocation(line: 4, scope: !11)