llvm/test/Linker/debug-info-global-var.ll
Adrian Prantl 69e607f200 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%.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@312144 91177308-0d34-0410-b5e6-96231b3b80d8
2017-08-30 18:06:51 +00:00

26 lines
1.2 KiB
LLVM

; RUN: llvm-link -S %s %S/debug-info-version-a.ll | FileCheck %s
source_filename = "debug-info-global-var.c"
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx10.12.0"
; CHECK: @g = global i32 0, align 4, !dbg ![[G:[0-9]+]]{{$}}
@g = global i32 0, align 4, !dbg !0
!llvm.dbg.cu = !{!1}
!llvm.module.flags = !{!6, !7, !8}
!llvm.ident = !{!9}
; CHECK: ![[G]] = !DIGlobalVariableExpression(var: ![[GVAR:.*]], expr: !DIExpression())
; CHECK: ![[GVAR]] = distinct !DIGlobalVariable(name: "g"
!0 = !DIGlobalVariableExpression(var: !10, expr: !DIExpression())
!1 = distinct !DICompileUnit(language: DW_LANG_C99, file: !2, producer: "clang", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !3, globals: !4)
!2 = !DIFile(filename: "debug-info-global-var.c", directory: "/")
!3 = !{}
!4 = !{!0}
!5 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!6 = !{i32 2, !"Dwarf Version", i32 4}
!7 = !{i32 2, !"Debug Info Version", i32 3}
!8 = !{i32 1, !"PIC Level", i32 2}
!9 = !{!"clang version 4.0.0 (trunk 286129) (llvm/trunk 286128)"}
!10 = distinct !DIGlobalVariable(name: "g", scope: !1, file: !2, line: 1, type: !5, isLocal: false, isDefinition: true)