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llvm-mirror/test/DebugInfo/X86/dbg-subrange.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

40 lines
1.9 KiB
LLVM

; RUN: llc -O0 < %s | FileCheck %s
; Radar 10464995
source_filename = "test/DebugInfo/X86/dbg-subrange.ll"
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx10.7.2"
@s = common global [4294967296 x i8] zeroinitializer, align 16, !dbg !0
; CHECK: .quad 4294967296 ## DW_AT_count
; Function Attrs: nounwind ssp uwtable
define void @bar() #0 !dbg !11 {
entry:
store i8 97, i8* getelementptr inbounds ([4294967296 x i8], [4294967296 x i8]* @s, i32 0, i64 0), align 1, !dbg !14
ret void, !dbg !16
}
attributes #0 = { nounwind ssp uwtable }
!llvm.dbg.cu = !{!7}
!llvm.module.flags = !{!10}
!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
!1 = !DIGlobalVariable(name: "s", scope: null, file: !2, line: 2, type: !3, isLocal: false, isDefinition: true)
!2 = !DIFile(filename: "small.c", directory: "/private/tmp")
!3 = !DICompositeType(tag: DW_TAG_array_type, baseType: !4, size: 34359738368, align: 8, elements: !5)
!4 = !DIBasicType(name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
!5 = !{!6}
!6 = !DISubrange(count: 4294967296)
!7 = distinct !DICompileUnit(language: DW_LANG_C99, file: !2, producer: "clang version 3.1 (trunk 144833)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !8, retainedTypes: !8, globals: !9, imports: !8)
!8 = !{}
!9 = !{!0}
!10 = !{i32 1, !"Debug Info Version", i32 3}
!11 = distinct !DISubprogram(name: "bar", scope: !2, file: !2, line: 4, type: !12, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !7)
!12 = !DISubroutineType(types: !13)
!13 = !{null}
!14 = !DILocation(line: 5, column: 3, scope: !15)
!15 = distinct !DILexicalBlock(scope: !11, file: !2, line: 4, column: 1)
!16 = !DILocation(line: 6, column: 1, scope: !15)