diff options
| author | dim <dim@FreeBSD.org> | 2016-12-26 20:36:37 +0000 |
|---|---|---|
| committer | dim <dim@FreeBSD.org> | 2016-12-26 20:36:37 +0000 |
| commit | 06210ae42d418d50d8d9365d5c9419308ae9e7ee (patch) | |
| tree | ab60b4cdd6e430dda1f292a46a77ddb744723f31 /contrib/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.h | |
| parent | 2dd166267f53df1c3748b4325d294b9b839de74b (diff) | |
| download | FreeBSD-src-06210ae42d418d50d8d9365d5c9419308ae9e7ee.zip FreeBSD-src-06210ae42d418d50d8d9365d5c9419308ae9e7ee.tar.gz | |
MFC r309124:
Upgrade our copies of clang, llvm, lldb, compiler-rt and libc++ to 3.9.0
release, and add lld 3.9.0. Also completely revamp the build system for
clang, llvm, lldb and their related tools.
Please note that from 3.5.0 onwards, clang, llvm and lldb require C++11
support to build; see UPDATING for more information.
Release notes for llvm, clang and lld are available here:
<http://llvm.org/releases/3.9.0/docs/ReleaseNotes.html>
<http://llvm.org/releases/3.9.0/tools/clang/docs/ReleaseNotes.html>
<http://llvm.org/releases/3.9.0/tools/lld/docs/ReleaseNotes.html>
Thanks to Ed Maste, Bryan Drewery, Andrew Turner, Antoine Brodin and Jan
Beich for their help.
Relnotes: yes
MFC r309147:
Pull in r282174 from upstream llvm trunk (by Krzysztof Parzyszek):
[PPC] Set SP after loading data from stack frame, if no red zone is
present
Follow-up to r280705: Make sure that the SP is only restored after
all data is loaded from the stack frame, if there is no red zone.
This completes the fix for
https://llvm.org/bugs/show_bug.cgi?id=26519.
Differential Revision: https://reviews.llvm.org/D24466
Reported by: Mark Millard
PR: 214433
MFC r309149:
Pull in r283060 from upstream llvm trunk (by Hal Finkel):
[PowerPC] Refactor soft-float support, and enable PPC64 soft float
This change enables soft-float for PowerPC64, and also makes
soft-float disable all vector instruction sets for both 32-bit and
64-bit modes. This latter part is necessary because the PPC backend
canonicalizes many Altivec vector types to floating-point types, and
so soft-float breaks scalarization support for many operations. Both
for embedded targets and for operating-system kernels desiring
soft-float support, it seems reasonable that disabling hardware
floating-point also disables vector instructions (embedded targets
without hardware floating point support are unlikely to have Altivec,
etc. and operating system kernels desiring not to use floating-point
registers to lower syscall cost are unlikely to want to use vector
registers either). If someone needs this to work, we'll need to
change the fact that we promote many Altivec operations to act on
v4f32. To make it possible to disable Altivec when soft-float is
enabled, hardware floating-point support needs to be expressed as a
positive feature, like the others, and not a negative feature,
because target features cannot have dependencies on the disabling of
some other feature. So +soft-float has now become -hard-float.
Fixes PR26970.
Pull in r283061 from upstream clang trunk (by Hal Finkel):
[PowerPC] Enable soft-float for PPC64, and +soft-float -> -hard-float
Enable soft-float support on PPC64, as the backend now supports it.
Also, the backend now uses -hard-float instead of +soft-float, so set
the target features accordingly.
Fixes PR26970.
Reported by: Mark Millard
PR: 214433
MFC r309212:
Add a few missed clang 3.9.0 files to OptionalObsoleteFiles.
MFC r309262:
Fix packaging for clang, lldb and lld 3.9.0
During the upgrade of clang/llvm etc to 3.9.0 in r309124, the PACKAGE
directive in the usr.bin/clang/*.mk files got dropped accidentally.
Restore it, with a few minor changes and additions:
* Correct license in clang.ucl to NCSA
* Add PACKAGE=clang for clang and most of the "ll" tools
* Put lldb in its own package
* Put lld in its own package
Reviewed by: gjb, jmallett
Differential Revision: https://reviews.freebsd.org/D8666
MFC r309656:
During the bootstrap phase, when building the minimal llvm library on
PowerPC, add lib/Support/Atomic.cpp. This is needed because upstream
llvm revision r271821 disabled the use of std::call_once, which causes
some fallback functions from Atomic.cpp to be used instead.
Reported by: Mark Millard
PR: 214902
MFC r309835:
Tentatively apply https://reviews.llvm.org/D18730 to work around gcc PR
70528 (bogus error: constructor required before non-static data member).
This should fix buildworld with the external gcc package.
Reported by: https://jenkins.freebsd.org/job/FreeBSD_HEAD_amd64_gcc/
MFC r310194:
Upgrade our copies of clang, llvm, lld, lldb, compiler-rt and libc++ to
3.9.1 release.
Please note that from 3.5.0 onwards, clang, llvm and lldb require C++11
support to build; see UPDATING for more information.
Release notes for llvm, clang and lld will be available here:
<http://releases.llvm.org/3.9.1/docs/ReleaseNotes.html>
<http://releases.llvm.org/3.9.1/tools/clang/docs/ReleaseNotes.html>
<http://releases.llvm.org/3.9.1/tools/lld/docs/ReleaseNotes.html>
Relnotes: yes
Diffstat (limited to 'contrib/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.h')
| -rw-r--r-- | contrib/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.h | 310 |
1 files changed, 310 insertions, 0 deletions
diff --git a/contrib/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.h b/contrib/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.h new file mode 100644 index 0000000..e4bbd61 --- /dev/null +++ b/contrib/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.h @@ -0,0 +1,310 @@ +//===-- llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.h ----*- C++ -*--===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This file contains support for writing Microsoft CodeView debug info. +// +//===----------------------------------------------------------------------===// + +#ifndef LLVM_LIB_CODEGEN_ASMPRINTER_CODEVIEWDEBUG_H +#define LLVM_LIB_CODEGEN_ASMPRINTER_CODEVIEWDEBUG_H + +#include "DebugHandlerBase.h" +#include "llvm/ADT/DenseMap.h" +#include "llvm/ADT/StringMap.h" +#include "llvm/CodeGen/AsmPrinter.h" +#include "llvm/CodeGen/MachineFunction.h" +#include "llvm/CodeGen/MachineModuleInfo.h" +#include "llvm/DebugInfo/CodeView/MemoryTypeTableBuilder.h" +#include "llvm/DebugInfo/CodeView/TypeIndex.h" +#include "llvm/IR/DebugInfo.h" +#include "llvm/IR/DebugLoc.h" +#include "llvm/MC/MCStreamer.h" +#include "llvm/Target/TargetLoweringObjectFile.h" + +namespace llvm { + +class StringRef; +class LexicalScope; +struct ClassInfo; + +/// \brief Collects and handles line tables information in a CodeView format. +class LLVM_LIBRARY_VISIBILITY CodeViewDebug : public DebugHandlerBase { + MCStreamer &OS; + codeview::MemoryTypeTableBuilder TypeTable; + + /// Represents the most general definition range. + struct LocalVarDefRange { + /// Indicates that variable data is stored in memory relative to the + /// specified register. + int InMemory : 1; + + /// Offset of variable data in memory. + int DataOffset : 31; + + /// Offset of the data into the user level struct. If zero, no splitting + /// occurred. + uint16_t StructOffset; + + /// Register containing the data or the register base of the memory + /// location containing the data. + uint16_t CVRegister; + + /// Compares all location fields. This includes all fields except the label + /// ranges. + bool isDifferentLocation(LocalVarDefRange &O) { + return InMemory != O.InMemory || DataOffset != O.DataOffset || + StructOffset != O.StructOffset || CVRegister != O.CVRegister; + } + + SmallVector<std::pair<const MCSymbol *, const MCSymbol *>, 1> Ranges; + }; + + static LocalVarDefRange createDefRangeMem(uint16_t CVRegister, int Offset); + static LocalVarDefRange createDefRangeReg(uint16_t CVRegister); + + /// Similar to DbgVariable in DwarfDebug, but not dwarf-specific. + struct LocalVariable { + const DILocalVariable *DIVar = nullptr; + SmallVector<LocalVarDefRange, 1> DefRanges; + }; + + struct InlineSite { + SmallVector<LocalVariable, 1> InlinedLocals; + SmallVector<const DILocation *, 1> ChildSites; + const DISubprogram *Inlinee = nullptr; + + /// The ID of the inline site or function used with .cv_loc. Not a type + /// index. + unsigned SiteFuncId = 0; + }; + + // For each function, store a vector of labels to its instructions, as well as + // to the end of the function. + struct FunctionInfo { + /// Map from inlined call site to inlined instructions and child inlined + /// call sites. Listed in program order. + std::unordered_map<const DILocation *, InlineSite> InlineSites; + + /// Ordered list of top-level inlined call sites. + SmallVector<const DILocation *, 1> ChildSites; + + SmallVector<LocalVariable, 1> Locals; + + DebugLoc LastLoc; + const MCSymbol *Begin = nullptr; + const MCSymbol *End = nullptr; + unsigned FuncId = 0; + unsigned LastFileId = 0; + bool HaveLineInfo = false; + }; + FunctionInfo *CurFn; + + /// The set of comdat .debug$S sections that we've seen so far. Each section + /// must start with a magic version number that must only be emitted once. + /// This set tracks which sections we've already opened. + DenseSet<MCSectionCOFF *> ComdatDebugSections; + + /// Switch to the appropriate .debug$S section for GVSym. If GVSym, the symbol + /// of an emitted global value, is in a comdat COFF section, this will switch + /// to a new .debug$S section in that comdat. This method ensures that the + /// section starts with the magic version number on first use. If GVSym is + /// null, uses the main .debug$S section. + void switchToDebugSectionForSymbol(const MCSymbol *GVSym); + + /// The next available function index for use with our .cv_* directives. Not + /// to be confused with type indices for LF_FUNC_ID records. + unsigned NextFuncId = 0; + + InlineSite &getInlineSite(const DILocation *InlinedAt, + const DISubprogram *Inlinee); + + codeview::TypeIndex getFuncIdForSubprogram(const DISubprogram *SP); + + static void collectInlineSiteChildren(SmallVectorImpl<unsigned> &Children, + const FunctionInfo &FI, + const InlineSite &Site); + + /// Remember some debug info about each function. Keep it in a stable order to + /// emit at the end of the TU. + MapVector<const Function *, FunctionInfo> FnDebugInfo; + + /// Map from DIFile to .cv_file id. + DenseMap<const DIFile *, unsigned> FileIdMap; + + /// All inlined subprograms in the order they should be emitted. + SmallSetVector<const DISubprogram *, 4> InlinedSubprograms; + + /// Map from a pair of DI metadata nodes and its DI type (or scope) that can + /// be nullptr, to CodeView type indices. Primarily indexed by + /// {DIType*, DIType*} and {DISubprogram*, DIType*}. + /// + /// The second entry in the key is needed for methods as DISubroutineType + /// representing static method type are shared with non-method function type. + DenseMap<std::pair<const DINode *, const DIType *>, codeview::TypeIndex> + TypeIndices; + + /// Map from DICompositeType* to complete type index. Non-record types are + /// always looked up in the normal TypeIndices map. + DenseMap<const DICompositeType *, codeview::TypeIndex> CompleteTypeIndices; + + /// Complete record types to emit after all active type lowerings are + /// finished. + SmallVector<const DICompositeType *, 4> DeferredCompleteTypes; + + /// Number of type lowering frames active on the stack. + unsigned TypeEmissionLevel = 0; + + codeview::TypeIndex VBPType; + + const DISubprogram *CurrentSubprogram = nullptr; + + // The UDTs we have seen while processing types; each entry is a pair of type + // index and type name. + std::vector<std::pair<std::string, codeview::TypeIndex>> LocalUDTs, + GlobalUDTs; + + typedef std::map<const DIFile *, std::string> FileToFilepathMapTy; + FileToFilepathMapTy FileToFilepathMap; + StringRef getFullFilepath(const DIFile *S); + + unsigned maybeRecordFile(const DIFile *F); + + void maybeRecordLocation(const DebugLoc &DL, const MachineFunction *MF); + + void clear(); + + void setCurrentSubprogram(const DISubprogram *SP) { + CurrentSubprogram = SP; + LocalUDTs.clear(); + } + + /// Emit the magic version number at the start of a CodeView type or symbol + /// section. Appears at the front of every .debug$S or .debug$T section. + void emitCodeViewMagicVersion(); + + void emitTypeInformation(); + + void emitInlineeLinesSubsection(); + + void emitDebugInfoForFunction(const Function *GV, FunctionInfo &FI); + + void emitDebugInfoForGlobals(); + + void emitDebugInfoForRetainedTypes(); + + void emitDebugInfoForUDTs( + ArrayRef<std::pair<std::string, codeview::TypeIndex>> UDTs); + + void emitDebugInfoForGlobal(const DIGlobalVariable *DIGV, MCSymbol *GVSym); + + /// Opens a subsection of the given kind in a .debug$S codeview section. + /// Returns an end label for use with endCVSubsection when the subsection is + /// finished. + MCSymbol *beginCVSubsection(codeview::ModuleSubstreamKind Kind); + + void endCVSubsection(MCSymbol *EndLabel); + + void emitInlinedCallSite(const FunctionInfo &FI, const DILocation *InlinedAt, + const InlineSite &Site); + + typedef DbgValueHistoryMap::InlinedVariable InlinedVariable; + + void collectVariableInfo(const DISubprogram *SP); + + void collectVariableInfoFromMMITable(DenseSet<InlinedVariable> &Processed); + + /// Records information about a local variable in the appropriate scope. In + /// particular, locals from inlined code live inside the inlining site. + void recordLocalVariable(LocalVariable &&Var, const DILocation *Loc); + + /// Emits local variables in the appropriate order. + void emitLocalVariableList(ArrayRef<LocalVariable> Locals); + + /// Emits an S_LOCAL record and its associated defined ranges. + void emitLocalVariable(const LocalVariable &Var); + + /// Translates the DIType to codeview if necessary and returns a type index + /// for it. + codeview::TypeIndex getTypeIndex(DITypeRef TypeRef, + DITypeRef ClassTyRef = DITypeRef()); + + codeview::TypeIndex getMemberFunctionType(const DISubprogram *SP, + const DICompositeType *Class); + + codeview::TypeIndex getScopeIndex(const DIScope *Scope); + + codeview::TypeIndex getVBPTypeIndex(); + + void addToUDTs(const DIType *Ty, codeview::TypeIndex TI); + + codeview::TypeIndex lowerType(const DIType *Ty, const DIType *ClassTy); + codeview::TypeIndex lowerTypeAlias(const DIDerivedType *Ty); + codeview::TypeIndex lowerTypeArray(const DICompositeType *Ty); + codeview::TypeIndex lowerTypeBasic(const DIBasicType *Ty); + codeview::TypeIndex lowerTypePointer(const DIDerivedType *Ty); + codeview::TypeIndex lowerTypeMemberPointer(const DIDerivedType *Ty); + codeview::TypeIndex lowerTypeModifier(const DIDerivedType *Ty); + codeview::TypeIndex lowerTypeFunction(const DISubroutineType *Ty); + codeview::TypeIndex lowerTypeMemberFunction(const DISubroutineType *Ty, + const DIType *ClassTy, + int ThisAdjustment); + codeview::TypeIndex lowerTypeEnum(const DICompositeType *Ty); + codeview::TypeIndex lowerTypeClass(const DICompositeType *Ty); + codeview::TypeIndex lowerTypeUnion(const DICompositeType *Ty); + + /// Symbol records should point to complete types, but type records should + /// always point to incomplete types to avoid cycles in the type graph. Only + /// use this entry point when generating symbol records. The complete and + /// incomplete type indices only differ for record types. All other types use + /// the same index. + codeview::TypeIndex getCompleteTypeIndex(DITypeRef TypeRef); + + codeview::TypeIndex lowerCompleteTypeClass(const DICompositeType *Ty); + codeview::TypeIndex lowerCompleteTypeUnion(const DICompositeType *Ty); + + struct TypeLoweringScope; + + void emitDeferredCompleteTypes(); + + void collectMemberInfo(ClassInfo &Info, const DIDerivedType *DDTy); + ClassInfo collectClassInfo(const DICompositeType *Ty); + + /// Common record member lowering functionality for record types, which are + /// structs, classes, and unions. Returns the field list index and the member + /// count. + std::tuple<codeview::TypeIndex, codeview::TypeIndex, unsigned, bool> + lowerRecordFieldList(const DICompositeType *Ty); + + /// Inserts {{Node, ClassTy}, TI} into TypeIndices and checks for duplicates. + codeview::TypeIndex recordTypeIndexForDINode(const DINode *Node, + codeview::TypeIndex TI, + const DIType *ClassTy = nullptr); + + unsigned getPointerSizeInBytes(); + +public: + CodeViewDebug(AsmPrinter *Asm); + + void setSymbolSize(const llvm::MCSymbol *, uint64_t) override {} + + /// \brief Emit the COFF section that holds the line table information. + void endModule() override; + + /// \brief Gather pre-function debug information. + void beginFunction(const MachineFunction *MF) override; + + /// \brief Gather post-function debug information. + void endFunction(const MachineFunction *) override; + + /// \brief Process beginning of an instruction. + void beginInstruction(const MachineInstr *MI) override; +}; +} // End of namespace llvm + +#endif |
