llvm-project/llvm/test/DebugInfo/Generic/2009-11-05-DeadGlobalVariab...

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; RUN: llc %s -o /dev/null
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; Here variable bar is optimized away. Do not trip over while trying to generate debug info.
source_filename = "test/DebugInfo/Generic/2009-11-05-DeadGlobalVariable.ll"
; Function Attrs: nounwind readnone ssp uwtable
define i32 @foo() #0 !dbg !6 {
entry:
ret i32 42, !dbg !11
}
attributes #0 = { nounwind readnone ssp uwtable }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!10}
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.0 (trunk 139632)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !2, globals: !3)
!1 = !DIFile(filename: "fb.c", directory: "/private/tmp")
!2 = !{}
!3 = !{!4}
!4 = !DIGlobalVariableExpression(var: !5, expr: !DIExpression())
!5 = !DIGlobalVariable(name: "bar", scope: !6, file: !1, line: 2, type: !9, isLocal: true, isDefinition: true)
!6 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !7, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: true, unit: !0)
!7 = !DISubroutineType(types: !8)
IR: Make metadata typeless in assembly Now that `Metadata` is typeless, reflect that in the assembly. These are the matching assembly changes for the metadata/value split in r223802. - Only use the `metadata` type when referencing metadata from a call intrinsic -- i.e., only when it's used as a `Value`. - Stop pretending that `ValueAsMetadata` is wrapped in an `MDNode` when referencing it from call intrinsics. So, assembly like this: define @foo(i32 %v) { call void @llvm.foo(metadata !{i32 %v}, metadata !0) call void @llvm.foo(metadata !{i32 7}, metadata !0) call void @llvm.foo(metadata !1, metadata !0) call void @llvm.foo(metadata !3, metadata !0) call void @llvm.foo(metadata !{metadata !3}, metadata !0) ret void, !bar !2 } !0 = metadata !{metadata !2} !1 = metadata !{i32* @global} !2 = metadata !{metadata !3} !3 = metadata !{} turns into this: define @foo(i32 %v) { call void @llvm.foo(metadata i32 %v, metadata !0) call void @llvm.foo(metadata i32 7, metadata !0) call void @llvm.foo(metadata i32* @global, metadata !0) call void @llvm.foo(metadata !3, metadata !0) call void @llvm.foo(metadata !{!3}, metadata !0) ret void, !bar !2 } !0 = !{!2} !1 = !{i32* @global} !2 = !{!3} !3 = !{} I wrote an upgrade script that handled almost all of the tests in llvm and many of the tests in cfe (even handling many `CHECK` lines). I've attached it (or will attach it in a moment if you're speedy) to PR21532 to help everyone update their out-of-tree testcases. This is part of PR21532. llvm-svn: 224257
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!8 = !{!9}
!9 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!10 = !{i32 1, !"Debug Info Version", i32 3}
!11 = !DILocation(line: 3, column: 3, scope: !12)
!12 = distinct !DILexicalBlock(scope: !6, file: !1, line: 1, column: 11)