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2c21fe4650
If a section is rw, it is irrelevant if the dynamic linker will write to it or not. It looks like llvm implemented this because gcc was doing it. It looks like gcc implemented this in the hope that it would put all the relocated items close together and speed up the dynamic linker. There are two problem with this: * It doesn't work. Both bfd and gold will map .data.rel to .data and concatenate the input sections in the order they are seen. * If we want a feature like that, it can be implemented directly in the linker since it knowns where the dynamic relocations are. llvm-svn: 253436
54 lines
2.3 KiB
LLVM
54 lines
2.3 KiB
LLVM
; RUN: llc -generate-arange-section -relocation-model=pic < %s | FileCheck %s
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; CHECK: .data
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; CHECK-NOT: .section
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; CHECK: .L_ZTId.DW.stub:
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; CHECK: .data
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; CHECK-NEXT: .Lsec_end0:
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target triple = "x86_64-linux-gnu"
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@_ZTId = external constant i8*
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@zed = global [1 x void ()*] [void ()* @bar]
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define void @foo() !dbg !4 {
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ret void
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}
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define void @bar() personality i8* bitcast (void ()* @foo to i8*) !dbg !9 {
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invoke void @foo()
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to label %invoke.cont unwind label %lpad
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invoke.cont: ; preds = %0
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ret void
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lpad: ; preds = %0
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%tmp1 = landingpad { i8*, i32 }
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filter [1 x i8*] [i8* bitcast (i8** @_ZTId to i8*)]
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ret void
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}
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!17, !18}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.7.0 (trunk 234308) (llvm/trunk 234310)", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !10, imports: !2)
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!1 = !DIFile(filename: "/Users/espindola/llvm/<stdin>", directory: "/Users/espindola/llvm/build")
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!2 = !{}
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!3 = !{!4, !9}
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!4 = distinct !DISubprogram(name: "foo", linkageName: "foo", scope: !5, file: !5, line: 1, type: !6, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: false, variables: !2)
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!5 = !DIFile(filename: "/Users/espindola/llvm/test.cpp", directory: "/Users/espindola/llvm/build")
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!6 = !DISubroutineType(types: !7)
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!7 = !{null, !8}
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!8 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!9 = distinct !DISubprogram(name: "bar_d", linkageName: "bar", scope: !5, file: !5, line: 3, type: !6, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: false, variables: !2)
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!10 = !{!11}
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!11 = !DIGlobalVariable(name: "zed", scope: !0, file: !5, line: 6, type: !12, isLocal: false, isDefinition: true, variable: [1 x void ()*]* @zed)
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!12 = !DICompositeType(tag: DW_TAG_array_type, baseType: !13, size: 64, align: 64, elements: !15)
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!13 = !DIDerivedType(tag: DW_TAG_typedef, name: "vifunc", file: !5, line: 5, baseType: !14)
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!14 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !6, size: 64, align: 64)
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!15 = !{!16}
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!16 = !DISubrange(count: 1)
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!17 = !{i32 2, !"Dwarf Version", i32 4}
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!18 = !{i32 2, !"Debug Info Version", i32 3}
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