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f20f8d830f
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. llvm-svn: 293936
94 lines
4.5 KiB
LLVM
94 lines
4.5 KiB
LLVM
; RUN: llc -filetype=asm -O0 -mtriple=x86_64-linux-gnu < %s -dwarf-version 2 | FileCheck -check-prefixes=CHECK,ELF-ASM %s
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; RUN: llc -filetype=obj -O0 %s -mtriple=x86_64-linux-gnu -o %t-2 -dwarf-version 2
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; RUN: llvm-dwarfdump %t-2 | FileCheck %s -check-prefix=CHECK-DWARF
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; RUN: llc -filetype=obj -O0 %s -mtriple=x86_64-linux-gnu -o %t-4 -dwarf-version 2
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; RUN: llvm-dwarfdump %t-4 | FileCheck %s -check-prefix=CHECK-DWARF
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; RUN: llc -filetype=asm -O0 -mtriple=x86_64-apple-darwin < %s -dwarf-version 2 | FileCheck -check-prefixes=CHECK,DARWIN-ASM2 %s
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; RUN: llc -filetype=asm -O0 -mtriple=x86_64-apple-darwin < %s -dwarf-version 4 | FileCheck -check-prefixes=CHECK,DARWIN-ASM4 %s
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; RUN: llc -filetype=obj %s -mtriple=x86_64-apple-darwin -o %t2-2 -dwarf-version 2
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; RUN: llvm-dwarfdump %t2-2 | FileCheck %s -check-prefix=CHECK-DWARF
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; RUN: llc -filetype=obj %s -mtriple=x86_64-apple-darwin -o %t2-4 -dwarf-version 4
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; RUN: llvm-dwarfdump %t2-4 | FileCheck %s -check-prefix=CHECK-DWARF
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; RUN: llc -filetype=asm -O0 -mtriple=x86_64-pc-win32 < %s -dwarf-version 2 | FileCheck -check-prefixes=CHECK,COFF-ASM %s
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; RUN: llc -filetype=asm -O0 -mtriple=x86_64-pc-win32 < %s -dwarf-version 4 | FileCheck -check-prefixes=CHECK,COFF-ASM %s
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; RUN: llc -filetype=obj -O0 %s -mtriple=x86_64-pc-win32 -o %t3-2 -dwarf-version 2
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; RUN: llvm-dwarfdump %t3-2 | FileCheck %s -check-prefix=CHECK-DWARF2
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; RUN: llc -filetype=obj -O0 %s -mtriple=x86_64-pc-win32 -o %t3-4 -dwarf-version 4
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; RUN: llvm-dwarfdump %t3-4 | FileCheck %s -check-prefix=CHECK-DWARF
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; Testing case generated from:
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; clang++ tu1.cpp tu2.cpp -g -emit-llvm -c
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; llvm-link tu1.bc tu2.bc -o tu12.ll -S
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; cat hdr.h
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; struct foo {
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; };
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; cat tu1.cpp
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; #include "hdr.h"
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; foo f;
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; cat tu2.cpp
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; #include "hdr.h"
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; foo g;
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; Make sure we use relocation for ref_addr on non-darwin platforms.
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; CHECK: DW_TAG_compile_unit
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; CHECK: DW_TAG_variable
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; ELF-ASM: .long [[TYPE:.*]] # DW_AT_type
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; DARWIN-ASM2: .long [[TYPE:.*]] ## DW_AT_type
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; DARWIN-ASM4: .long [[TYPE:.*]] ## DW_AT_type
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; COFF-ASM: .long [[TYPE:.*]] # DW_AT_type
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; CHECK: DW_TAG_structure_type
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; CHECK: cu_begin1
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; CHECK: DW_TAG_compile_unit
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; CHECK-NOT: DW_TAG_structure_type
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; This variable's type is in the 1st CU.
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; CHECK: DW_TAG_variable
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; Make sure this is relocatable.
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; and test that we don't create the labels to emit a correct COFF relocation
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; ELF-ASM: .quad .debug_info+[[TYPE]] # DW_AT_type
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; COFF-ASM: .secrel32 .Lsection_info+[[TYPE]] # DW_AT_type
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; DARWIN-ASM2: .quad [[TYPE]] ## DW_AT_type
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; DARWIN-ASM4: .long [[TYPE]] ## DW_AT_type
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; CHECK-NOT: DW_TAG_structure_type
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; CHECK: .section
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; CHECK-DWARF: DW_TAG_compile_unit
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; CHECK-DWARF: 0x[[ADDR:.*]]: DW_TAG_structure_type
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; CHECK-DWARF: DW_TAG_compile_unit
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; CHECK-DWARF: DW_TAG_variable
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; CHECK-DWARF: DW_AT_type [DW_FORM_ref_addr] {{.*}}[[ADDR]])
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; CHECK-DWARF2: DW_TAG_compile_unit
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; CHECK-DWARF2: DW_TAG_variable
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; CHECK-DWARF2: DW_AT_type [DW_FORM_ref4] {{.*}} => {[[ADDR:.*]]})
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; CHECK-DWARF2: [[ADDR]]: DW_TAG_structure_type
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source_filename = "test/DebugInfo/X86/ref_addr_relocation.ll"
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%struct.foo = type { i8 }
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@f = global %struct.foo zeroinitializer, align 1, !dbg !0
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@g = global %struct.foo zeroinitializer, align 1, !dbg !6
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!llvm.dbg.cu = !{!9, !12}
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!llvm.module.flags = !{!14, !15}
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!0 = !DIGlobalVariableExpression(var: !1)
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!1 = !DIGlobalVariable(name: "f", scope: null, file: !2, line: 2, type: !3, isLocal: false, isDefinition: true)
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!2 = !DIFile(filename: "tu1.cpp", directory: "/Users/manmanren/test-Nov/type_unique_air/ref_addr")
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!3 = !DICompositeType(tag: DW_TAG_structure_type, name: "foo", file: !4, line: 1, size: 8, align: 8, elements: !5, identifier: "_ZTS3foo")
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!4 = !DIFile(filename: "./hdr.h", directory: "/Users/manmanren/test-Nov/type_unique_air/ref_addr")
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!5 = !{}
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!6 = !DIGlobalVariableExpression(var: !7)
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!7 = !DIGlobalVariable(name: "g", scope: null, file: !8, line: 2, type: !3, isLocal: false, isDefinition: true)
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!8 = !DIFile(filename: "tu2.cpp", directory: "/Users/manmanren/test-Nov/type_unique_air/ref_addr")
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!9 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !2, producer: "clang version 3.4 (trunk 191799)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !5, retainedTypes: !10, globals: !11, imports: !5)
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!10 = !{!3}
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!11 = !{!0}
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!12 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !8, producer: "clang version 3.4 (trunk 191799)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !5, retainedTypes: !10, globals: !13, imports: !5)
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!13 = !{!6}
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!14 = !{i32 2, !"Dwarf Version", i32 2}
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!15 = !{i32 1, !"Debug Info Version", i32 3}
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