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Debug info: Add dwarf backend support for DIModule.

Browse Source 
rdar://problem/20965932

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241034 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Adrian Prantl 2015-06-30 02:13:04 +00:00
parent 7ede9649c1
commit 85cd16c88e
6 changed files with 60 additions and 0 deletions
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5
include/llvm/Support/Dwarf.h
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@ -239,6 +239,11 @@ enum Attribute : uint16_t {
DW_AT_GNU_pubnames = 0x2134,
DW_AT_GNU_pubtypes = 0x2135,
// LLVM project extensions.
DW_AT_LLVM_include_path = 0x3e00,
DW_AT_LLVM_config_macros = 0x3e01,
DW_AT_LLVM_isysroot = 0x3e02,
// Apple extensions.
DW_AT_APPLE_optimized = 0x3fe1,
DW_AT_APPLE_flags = 0x3fe2,

2
lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
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@ -638,6 +638,8 @@ DIE *DwarfCompileUnit::constructImportedEntityDIE(
auto *Entity = resolve(Module->getEntity());
if (auto *NS = dyn_cast<DINamespace>(Entity))
EntityDie = getOrCreateNameSpace(NS);
else if (auto *M = dyn_cast<DIModule>(Entity))
EntityDie = getOrCreateModule(M);
else if (auto *SP = dyn_cast<DISubprogram>(Entity))
EntityDie = getOrCreateSubprogramDIE(SP);
else if (auto *T = dyn_cast<DIType>(Entity))

24
lib/CodeGen/AsmPrinter/DwarfUnit.cpp
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@ -1069,6 +1069,30 @@ DIE *DwarfUnit::getOrCreateNameSpace(const DINamespace *NS) {
return &NDie;
}
DIE *DwarfUnit::getOrCreateModule(const DIModule *M) {
// Construct the context before querying for the existence of the DIE in case
// such construction creates the DIE.
DIE *ContextDIE = getOrCreateContextDIE(M->getScope());
if (DIE *MDie = getDIE(M))
return MDie;
DIE &MDie = createAndAddDIE(dwarf::DW_TAG_module, *ContextDIE, M);
if (!M->getName().empty()) {
addString(MDie, dwarf::DW_AT_name, M->getName());
addGlobalName(M->getName(), MDie, M->getScope());
}
if (!M->getConfigurationMacros().empty())
addString(MDie, dwarf::DW_AT_LLVM_config_macros,
M->getConfigurationMacros());
if (!M->getIncludePath().empty())
addString(MDie, dwarf::DW_AT_LLVM_include_path, M->getIncludePath());
if (!M->getISysRoot().empty())
addString(MDie, dwarf::DW_AT_LLVM_isysroot, M->getISysRoot());
return &MDie;
}
DIE *DwarfUnit::getOrCreateSubprogramDIE(const DISubprogram *SP, bool Minimal) {
// Construct the context before querying for the existence of the DIE in case
// such construction creates the DIE (as is the case for member function

1
lib/CodeGen/AsmPrinter/DwarfUnit.h
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@ -291,6 +291,7 @@ public:
dwarf::Attribute Attribute = dwarf::DW_AT_type);
DIE *getOrCreateNameSpace(const DINamespace *NS);
DIE *getOrCreateModule(const DIModule *M);
DIE *getOrCreateSubprogramDIE(const DISubprogram *SP, bool Minimal = false);
void applySubprogramAttributes(const DISubprogram *SP, DIE &SPDie,

3
lib/Support/Dwarf.cpp
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@ -190,6 +190,9 @@ const char *llvm::dwarf::AttributeString(unsigned Attribute) {
case DW_AT_APPLE_property_attribute: return "DW_AT_APPLE_property_attribute";
case DW_AT_APPLE_property: return "DW_AT_APPLE_property";
case DW_AT_APPLE_objc_complete_type: return "DW_AT_APPLE_objc_complete_type";
case DW_AT_LLVM_include_path: return "DW_AT_LLVM_include_path";
case DW_AT_LLVM_config_macros: return "DW_AT_LLVM_config_macros";
case DW_AT_LLVM_isysroot: return "DW_AT_LLVM_isysroot";
// DWARF5 Fission Extension Attribute
case DW_AT_GNU_dwo_name: return "DW_AT_GNU_dwo_name";

25
test/DebugInfo/X86/DIModule.ll Normal file
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@ -0,0 +1,25 @@
; ModuleID = '/Volumes/Data/apple-internal/llvm/tools/clang/test/Modules/debug-info-moduleimport.m'
; RUN: llc %s -o %t -filetype=obj
; RUN: llvm-dwarfdump -debug-dump=info %t | FileCheck %s
; CHECK: DW_TAG_module
; CHECK-NEXT: DW_AT_name {{.*}}"DebugModule"
; CHECK-NEXT: DW_AT_LLVM_config_macros {{.*}}"-DMODULES=0"
; CHECK-NEXT: DW_AT_LLVM_include_path {{.*}}"/llvm/tools/clang/test/Modules/Inputs"
; CHECK-NEXT: DW_AT_LLVM_isysroot {{.*}}"/"
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx"
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!6, !7}
!llvm.ident = !{!8}
!0 = distinct !DICompileUnit(language: DW_LANG_ObjC, file: !1, producer: "LLVM version 3.7.0", isOptimized: false, runtimeVersion: 2, emissionKind: 1, enums: !2, retainedTypes: !2, subprograms: !2, globals: !2, imports: !3)
!1 = !DIFile(filename: "/llvm/tools/clang/test/Modules/<stdin>", directory: "/")
!2 = !{}
!3 = !{!4}
!4 = !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: !0, entity: !5, line: 5)
!5 = !DIModule(scope: null, name: "DebugModule", configMacros: "-DMODULES=0", includePath: "/llvm/tools/clang/test/Modules/Inputs", isysroot: "/")
!6 = !{i32 2, !"Dwarf Version", i32 4}
!7 = !{i32 2, !"Debug Info Version", i32 3}
!8 = !{!"LLVM version 3.7.0"}