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The 3-field form was introduced by D3499 in 2014 and the legacy 2-field form was planned to be removed in LLVM 4.0 For the textual format, this patch migrates the existing 2-field form to use the 3-field form and deletes the compatibility code. test/Verifier/global-ctors-2.ll checks we have a friendly error message. For bitcode, lib/IR/AutoUpgrade UpgradeGlobalVariables will upgrade the 2-field form (add i8* null as the third field). Reviewed By: rnk, dexonsmith Differential Revision: https://reviews.llvm.org/D61547 llvm-svn: 360742
38 lines
1.6 KiB
LLVM
38 lines
1.6 KiB
LLVM
; RUN: opt -S -globaldce < %s | FileCheck %s
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; Test that the presence of debug intrinsics isn't affecting GlobalDCE.
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; CHECK: @llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 65535, void ()* @_notremovable, i8* null }]
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; CHECK-NOT: @_GLOBAL__I_a
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declare void @_notremovable()
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@llvm.global_ctors = appending global [3 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 65535, void ()* @_GLOBAL__I_a, i8* null }, { i32, void ()*, i8* } { i32 65535, void ()* @_GLOBAL__I_b, i8* null }, { i32, void ()*, i8* } { i32 65535, void ()* @_notremovable, i8* null }]
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@x = internal unnamed_addr constant i8 undef, align 1
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; Function Attrs: nounwind readnone
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define internal void @_GLOBAL__I_a() #1 section "__TEXT,__StaticInit,regular,pure_instructions" {
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entry:
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ret void
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}
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; Function Attrs: nounwind readnone
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define internal void @_GLOBAL__I_b() #1 section "__TEXT,__StaticInit,regular,pure_instructions" {
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entry:
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tail call void @llvm.dbg.value(metadata i8* @x, metadata !4, metadata !DIExpression(DW_OP_deref, DW_OP_constu, 0, DW_OP_swap, DW_OP_xderef)), !dbg !5
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ret void
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}
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; Function Attrs: nounwind readnone speculatable
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declare void @llvm.dbg.value(metadata, metadata, metadata)
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!llvm.module.flags = !{!0}
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!llvm.dbg.cu = !{!1}
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!0 = !{i32 2, !"Debug Info Version", i32 3}
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!1 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !2, emissionKind: FullDebug)
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!2 = !DIFile(filename: "filename", directory: "directory")
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!3 = distinct !DISubprogram(name: "h1", unit: !1)
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!4 = !DILocalVariable(name: "b", arg: 1, scope: !3)
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!5 = !DILocation(scope: !3)
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