llvm-mirror/test/Bitcode/DIGlobalVariableExpression2.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

32 lines
1.5 KiB
LLVM

; RUN: llvm-dis -o - %s.bc | FileCheck %s
; CHECK: @g = common global i32 0, align 4, !dbg ![[G:[0-9]+]]
; CHECK-DAG: ![[G]] = distinct !DIGlobalVariableExpression(var: ![[GVAR:[0-9]+]], expr: !DIExpression())
; CHECK-DAG: distinct !DICompileUnit({{.*}}, globals: ![[GLOBS:[0-9]+]]
; CHECK-DAG: ![[GLOBS]] = !{![[GEXPR:[0-9]+]]}
; CHECK-DAG: ![[GEXPR]] = distinct !DIGlobalVariableExpression(var: ![[GVAR]], expr: !DIExpression())
; CHECK-DAG: ![[GVAR]] = !DIGlobalVariable(name: "g",
; Test the bitcode upgrade for DIGlobalVariable -> DIGlobalVariableExpression.
; ModuleID = 'a.c'
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx10.12.0"
@g = common global i32 0, align 4
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!6, !7, !8}
!llvm.ident = !{!9}
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.7.0 (clang-stage1-configure-RA_build 241111)", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !2, subprograms: !2, globals: !3, imports: !2)
!1 = !DIFile(filename: "a.c", directory: "/tmp")
!2 = !{}
!3 = !{!4}
!4 = !DIGlobalVariable(name: "g", scope: !0, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true, variable: i32* @g)
!5 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!6 = !{i32 2, !"Dwarf Version", i32 2}
!7 = !{i32 2, !"Debug Info Version", i32 3}
!8 = !{i32 1, !"PIC Level", i32 2}
!9 = !{!"clang version 3.7.0 (clang-stage1-configure-RA_build 241111)"}