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7931a61c18
On ELF every section can have a corresponding section symbol. When in an assembly file we have .quad .text the '.text' refers to that symbol. The way we used to handle them is to leave .text an undefined symbol until the very end when the object writer would map them to the actual section symbol. The problem with that is that anything before the end would see an undefined symbol. This could result in bad diagnostics (test/MC/AArch64/label-arithmetic-diags-elf.s), or incorrect results when using the asm streamer (est/MC/Mips/expansion-jal-sym-pic.s). Fixing this will also allow using the section symbol earlier for setting sh_link of SHF_METADATA sections. This patch includes a few hacks to avoid changing our behaviour when handling conflicts between section symbols and other symbols. I reported pr31850 to track that. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@293936 91177308-0d34-0410-b5e6-96231b3b80d8
36 lines
1.5 KiB
LLVM
36 lines
1.5 KiB
LLVM
; RUN: llc -split-dwarf=Enable -mtriple=powerpc64-unknown-linux-gnu -O0 -filetype=asm < %s | FileCheck %s
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; FIXME: add relocation and DWARF expression support to llvm-dwarfdump & use
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; that here instead of raw assembly printing
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; CHECK: debug_info.dwo
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; 3 bytes of data in this DW_FORM_block1 representation of the location of 'tls'
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; CHECK: .byte 3{{ *}}# DW_AT_location
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; DW_OP_const_index (0xfx == 252) to refer to the debug_addr table
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; CHECK-NEXT: .byte 252
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; an index of zero into the debug_addr table
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; CHECK-NEXT: .byte 0
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; DW_OP_GNU_push_tls_address
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; CHECK-NEXT: .byte 224
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; check that the expected TLS address description is the first thing in the debug_addr section
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; CHECK: .section .debug_addr,"",@progbits
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; CHECK-NEXT: .quad tls@DTPREL+32768
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source_filename = "test/DebugInfo/PowerPC/tls-fission.ll"
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@tls = thread_local global i32 0, align 4, !dbg !0
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!llvm.dbg.cu = !{!4}
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!llvm.module.flags = !{!7, !8}
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!0 = !DIGlobalVariableExpression(var: !1)
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!1 = !DIGlobalVariable(name: "tls", scope: null, file: !2, line: 1, type: !3, isLocal: false, isDefinition: true)
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!2 = !DIFile(filename: "tls.cpp", directory: "/tmp")
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!3 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!4 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !2, producer: "clang version 3.4 ", isOptimized: false, runtimeVersion: 0, splitDebugFilename: "tls.dwo", emissionKind: FullDebug, enums: !5, retainedTypes: !5, globals: !6, imports: !5)
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!5 = !{}
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!6 = !{!0}
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!7 = !{i32 2, !"Dwarf Version", i32 3}
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!8 = !{i32 1, !"Debug Info Version", i32 3}
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