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7d6813a6c8
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
38 lines
1.7 KiB
LLVM
38 lines
1.7 KiB
LLVM
; RUN: llc < %s | FileCheck %s
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; This tests that we don't emit information about globals that were discarded
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; during optimization. We should only see one global symbol record.
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; CHECK: .short 4364 # Record kind: S_LDATA32
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; CHECK: .long 117 # Type
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; CHECK: .secrel32 x # DataOffset
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; CHECK: .secidx x # Segment
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; CHECK: .asciz "x" # Name
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; CHECK-NOT: S_GDATA32
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; ModuleID = 't.ii'
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source_filename = "t.ii"
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target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-pc-windows-msvc19.0.0"
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@x = global i32 42, !dbg !0
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!llvm.dbg.cu = !{!2}
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!llvm.module.flags = !{!9, !10, !11}
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!llvm.ident = !{!12}
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!0 = distinct !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
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!1 = !DIGlobalVariable(name: "x", scope: !2, file: !3, line: 4, type: !8, isLocal: true, isDefinition: true)
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!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 3.9.0 (trunk 272215) (llvm/trunk 272226)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, retainedTypes: !4, globals: !5)
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!3 = !DIFile(filename: "t.c", directory: "foo")
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!4 = !{}
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!5 = !{!6, !0}
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!6 = distinct !DIGlobalVariableExpression(var: !7, expr: !DIExpression())
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!7 = !DIGlobalVariable(name: "_OptionsStorage", scope: !2, file: !3, line: 3, type: !8, isLocal: true, isDefinition: true)
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!8 = !DIBasicType(name: "unsigned int", size: 32, align: 32, encoding: DW_ATE_unsigned)
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!9 = !{i32 2, !"CodeView", i32 1}
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!10 = !{i32 2, !"Debug Info Version", i32 3}
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!11 = !{i32 1, !"PIC Level", i32 2}
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!12 = !{!"clang version 3.9.0 (trunk 272215) (llvm/trunk 272226)"}
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