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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.
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source_filename = "test/DebugInfo/Generic/2009-11-05-DeadGlobalVariable.ll"
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; Function Attrs: nounwind readnone ssp uwtable
define i32 @foo ( ) #0 !dbg !6 {
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entry:
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ret i32 42 , !dbg !11
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}
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attributes #0 = { nounwind readnone ssp uwtable }
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!llvm.dbg.cu = ! { !0 }
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!llvm.module.flags = ! { !10 }
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!0 = distinct !DICompileUnit ( language: D W _ L A N G _ C 99 , file: !1 , producer: "clang version 3.0 (trunk 139632)" , isOptimized: true , runtimeVersion: 0 , emissionKind: F u l l D e b u g , enums: !2 , retainedTypes: !2 , globals: !3 )
!1 = !DIFile ( filename: "fb.c" , directory: "/private/tmp" )
!2 = ! { }
!3 = ! { !4 }
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!4 = !DIGlobalVariableExpression ( var: !5 , expr: !DIExpression ( ) )
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!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 )
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!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 }
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!9 = !DIBasicType ( name: "int" , size: 32 , align: 32 , encoding: D W _ A T E _ s i g n e d )
!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 )