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* Revert "Introduce a string_ostream string builder facilty"Alp Toker2014-06-26
| | | | | | Temporarily back out commits r211749, r211752 and r211754. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211814 91177308-0d34-0410-b5e6-96231b3b80d8
* Introduce a string_ostream string builder faciltyAlp Toker2014-06-26
| | | | | | | | | | | | | | | | | | | | string_ostream is a safe and efficient string builder that combines opaque stack storage with a built-in ostream interface. small_string_ostream<bytes> additionally permits an explicit stack storage size other than the default 128 bytes to be provided. Beyond that, storage is transferred to the heap. This convenient class can be used in most places an std::string+raw_string_ostream pair or SmallString<>+raw_svector_ostream pair would previously have been used, in order to guarantee consistent access without byte truncation. The patch also converts much of LLVM to use the new facility. These changes include several probable bug fixes for truncated output, a programming error that's no longer possible with the new interface. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211749 91177308-0d34-0410-b5e6-96231b3b80d8
* [DWARF parser] Use distinction between DW_AT_ranges_base and ↵Alexey Samsonov2014-06-13
| | | | | | DW_AT_GNU_ranges_base instead of DWARF version git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210945 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove 'using std::errro_code' from lib.Rafael Espindola2014-06-13
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210871 91177308-0d34-0410-b5e6-96231b3b80d8
* [DWARF parser] Fix broken address ranges construction.Alexey Samsonov2014-06-12
| | | | | | | | | | | | | | | | | | Previous algorithm for constructing [Address ranges]->[Compile Units] mapping was wrong. It somewhat relied on the assumption that address ranges for different compile units may not overlap. It is not so. For example, two compile units may contain the definition of the same linkonce_odr function. These definitions will be merged at link-time, resulting in equivalent .debug_ranges entries for both these units Instead of sorting and merging original address ranges (from .debug_ranges and .debug_aranges), implement a different approach: save endpoints of all ranges, and then use a sweep-line approach to construct the desired mapping. If we find that certain address maps to several compilation units, we just pick any of them. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210860 91177308-0d34-0410-b5e6-96231b3b80d8
* Don't use 'using std::error_code' in include/llvm.Rafael Espindola2014-06-12
| | | | | | This should make sure that most new uses use the std prefix. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210835 91177308-0d34-0410-b5e6-96231b3b80d8
* [llvm-symbolizer] Fix parsing DW_AT_ranges in Fission skeleton compile unit ↵Alexey Samsonov2014-06-12
| | | | | | | | | | | | | | | DIEs. Turns out that DW_AT_ranges_base attribute sets the offset for DW_AT_ranges values specified in the .dwo file, but not for DW_AT_ranges specified in the skeleton compile unit DIE in the main executable. This is extremely confusing, and would hopefully be fixed in DWARF-5 when it's finalized. For now this behavior makes sense, as otherwise Fission would break DWARF consumers who doesn't know anything about DW_AT_ranges_base. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210809 91177308-0d34-0410-b5e6-96231b3b80d8
* [modules] Add module maps for LLVM. These are not quite ready for prime-timeRichard Smith2014-05-21
| | | | | | | | yet, but only a few more Clang patches need to land. (I have 'ninja check' passing locally.) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209269 91177308-0d34-0410-b5e6-96231b3b80d8
* [DWARF parser] Teach DIContext to fetch short (non-linkage) function names ↵Alexey Samsonov2014-05-17
| | | | | | | | | | | for a given address. Change --functions option in llvm-symbolizer tool to accept values "none", "short" or "linkage". Update the tests and docs accordingly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209050 91177308-0d34-0410-b5e6-96231b3b80d8
* [DWARF parser] Use enums instead of bitfields in DILineInfoSpecifier.Alexey Samsonov2014-05-15
| | | | | | | | | | | | | It is more appropriate than the current situation, when one flag (AbsoluteFilePath) is relevant only if another flag is set. This refactoring would also simplify fetching the short function name (stored in DW_AT_name) instead of a linkage name returned currently. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208921 91177308-0d34-0410-b5e6-96231b3b80d8
* [DWARF parser] Cleanup code in DWARFDebugLine.Alexey Samsonov2014-04-30
| | | | | | | | | | | | | | | | | | | Streamline parsing and dumping line tables: Prefer composition to multiple inheritance in DWARFDebugLine::ParsingState. Get rid of the weird concept of "DumpingState" structure. was: DWARFDebugLine::DumpingState state(OS); DWARFDebugLine::parseStatementTable(..., state); now: DWARFDebugLine::LineTable LineTable; LineTable.parse(...); LineTable.dump(OS); No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207599 91177308-0d34-0410-b5e6-96231b3b80d8
* [DWARF parser] Cleanup code in DWARFDebugLine.Alexey Samsonov2014-04-29
| | | | | | | | | | | | | | Move several function definitions into .cpp, unify constructors and clear() methods (fixing a couple of latent bugs from copy-paste), turn static function parsePrologue() into Prologue::parse(). More work needed here to untangle weird multiple inheritance in table parsing and dumping. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207579 91177308-0d34-0410-b5e6-96231b3b80d8
* [DWARF parser] Compress DIEMinimal even further, simplify building DIE tree.Alexey Samsonov2014-04-29
| | | | | | | | | | | | DIE doesn't need to store a pointer to its parent: we can traverse the DIE tree only with functions getFirstChild() and getSibling(). Parents must be known only when we construct the tree. Rewrite setDIERelations() procedure in a more straightforward way, and get rid of lots of now unused DIEMinimal methods. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207563 91177308-0d34-0410-b5e6-96231b3b80d8
* [DWARF parser] DWARFDebugFrame: Make FrameEntry struct smaller.Alexey Samsonov2014-04-28
| | | | | | | | | | | FrameEntry doesn't need to hold a reference to the section it is located in. Instead, pass DataExtractor as an argument of parsing function. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207461 91177308-0d34-0410-b5e6-96231b3b80d8
* [DWARF parser] DWARFDebugFrame: use unique_ptr instead of raw pointerAlexey Samsonov2014-04-28
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207459 91177308-0d34-0410-b5e6-96231b3b80d8
* [DWARF parser] Simplify DWARFDebugAranges generation.Alexey Samsonov2014-04-28
| | | | | | | | | | | There is no need to keep the whole contents of .debug_aranges section in memory when we build address ranges table. Memory optimization that used to be in this code (precalculate the size of vector of ranges before filling it) is not really needed - later we will compact and resize this vector anyway. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207457 91177308-0d34-0410-b5e6-96231b3b80d8
* [C++] Use 'nullptr'.Craig Topper2014-04-28
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207394 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix missing includeAlexey Samsonov2014-04-25
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207278 91177308-0d34-0410-b5e6-96231b3b80d8
* [DWARF parser] Cleanup code in DWARFDebugAranges.Alexey Samsonov2014-04-25
| | | | | | | No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207276 91177308-0d34-0410-b5e6-96231b3b80d8
* [DWARF parser] Cleanup code in DWARFDebugAbbrev.Alexey Samsonov2014-04-25
| | | | | | | No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207274 91177308-0d34-0410-b5e6-96231b3b80d8
* [DWARF parser] Make a few methods non-publicAlexey Samsonov2014-04-24
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207156 91177308-0d34-0410-b5e6-96231b3b80d8
* [DWARF parser] DWARFUnit ctor doesn't need both parsed and raw .debug_abbrev ↵Alexey Samsonov2014-04-24
| | | | | | section. Remove the former. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207153 91177308-0d34-0410-b5e6-96231b3b80d8
* [DWARF parser] Simplify and re-format a methodAlexey Samsonov2014-04-24
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207151 91177308-0d34-0410-b5e6-96231b3b80d8
* [Modules] Make Support/Debug.h modular. This requires it to not changeChandler Carruth2014-04-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | behavior based on other files defining DEBUG_TYPE, which means it cannot define DEBUG_TYPE at all. This is actually better IMO as it forces folks to define relevant DEBUG_TYPEs for their files. However, it requires all files that currently use DEBUG(...) to define a DEBUG_TYPE if they don't already. I've updated all such files in LLVM and will do the same for other upstream projects. This still leaves one important change in how LLVM uses the DEBUG_TYPE macro going forward: we need to only define the macro *after* header files have been #include-ed. Previously, this wasn't possible because Debug.h required the macro to be pre-defined. This commit removes that. By defining DEBUG_TYPE after the includes two things are fixed: - Header files that need to provide a DEBUG_TYPE for some inline code can do so by defining the macro before their inline code and undef-ing it afterward so the macro does not escape. - We no longer have rampant ODR violations due to including headers with different DEBUG_TYPE definitions. This may be mostly an academic violation today, but with modules these types of violations are easy to check for and potentially very relevant. Where necessary to suppor headers with DEBUG_TYPE, I have moved the definitions below the includes in this commit. I plan to move the rest of the DEBUG_TYPE macros in LLVM in subsequent commits; this one is big enough. The comments in Debug.h, which were hilariously out of date already, have been updated to reflect the recommended practice going forward. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206822 91177308-0d34-0410-b5e6-96231b3b80d8
* [llvm-symbolizer] Print file/line for a PC even if there is no DIE ↵Alexey Samsonov2014-04-18
| | | | | | | | | | | | describing it. This is important for symbolizing executables with debug info in unavailable .dwo files. Even if all DIE entries are missing, we can still symbolize an address: function name can be fetched from symbol table, and file/line info can be fetched from line table. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206665 91177308-0d34-0410-b5e6-96231b3b80d8
* [DWARF parser] Turn DILineInfo into a struct.Alexey Samsonov2014-04-18
| | | | | | | | | | | Immutable DILineInfo doesn't bring any benefits and complicates code. Also, use std::string instead of SmallString<16> for file and function names - their length can vary significantly. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206654 91177308-0d34-0410-b5e6-96231b3b80d8
* [DWARF parser] Respect address ranges specified in compile unit DIE.Alexey Samsonov2014-04-18
| | | | | | | | | | | | When address ranges for compile unit are specified in compile unit DIE itself, there is no need to collect ranges from children subprogram DIEs. This change speeds up llvm-symbolizer on Clang-produced binaries with full debug info. For instance, symbolizing a first address in a 1Gb binary is now 2x faster (1s vs. 2s). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206641 91177308-0d34-0410-b5e6-96231b3b80d8
* DebugInfo: Remove some initializer lists to make MSVC happy again.Benjamin Kramer2014-04-18
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206632 91177308-0d34-0410-b5e6-96231b3b80d8
* [DWARF parser] Refactor fetching DIE address ranges.Alexey Samsonov2014-04-18
| | | | | | | | | | | Add a helper method to get address ranges specified in a DIE (either by DW_AT_low_pc/DW_AT_high_pc, or by DW_AT_ranges). Use it to untangle and simplify the code. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206624 91177308-0d34-0410-b5e6-96231b3b80d8
* [C++11] More 'nullptr' conversion. In some cases just using a boolean check ↵Craig Topper2014-04-15
| | | | | | instead of comparing to nullptr. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206252 91177308-0d34-0410-b5e6-96231b3b80d8
* Simplify compression API by decompressing into a SmallVector rather than a ↵David Blaikie2014-04-05
| | | | | | | | | | | | MemoryBuffer This avoids an extra copy during decompression and avoids the use of MemoryBuffer which is a weirdly esoteric device that includes unrelated concepts like "file name" (its rather generic name is a bit misleading). Similar refactoring of zlib::compress coming up. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205676 91177308-0d34-0410-b5e6-96231b3b80d8
* DebugInfo: Support debug_loc under fissionDavid Blaikie2014-03-25
| | | | | | | | | | | | | | | | | | | | | | Implement debug_loc.dwo, as well as llvm-dwarfdump support for dumping this section. Outlined in the DWARF5 spec and http://gcc.gnu.org/wiki/DebugFission the debug_loc.dwo section has more variation than the standard debug_loc, allowing 3 different forms of entry (plus the end of list entry). GCC seems to, and Clang certainly, only use one form, so I've just implemented dumping support for that for now. It wasn't immediately obvious that there was a good refactoring to share the implementation of dumping support between debug_loc and debug_loc.dwo, so they're separate for now - ideas welcome or I may come back to it at some point. As per a comment in the code, we could choose different forms that may reduce the number of debug_addr entries we emit, but that will require further study. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204697 91177308-0d34-0410-b5e6-96231b3b80d8
* Make some assertions on constant expressions static.Benjamin Kramer2014-03-15
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204011 91177308-0d34-0410-b5e6-96231b3b80d8
* [C++11] Introduce SectionRef::relocations() to use range-based loopsAlexey Samsonov2014-03-14
| | | | | | | | | | | | Reviewers: rafael Reviewed By: rafael CC: llvm-commits Differential Revision: http://llvm-reviews.chandlerc.com/D3077 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203927 91177308-0d34-0410-b5e6-96231b3b80d8
* Use ctor instead of initializer list to appease Windows buildbotsAlexey Samsonov2014-03-14
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203915 91177308-0d34-0410-b5e6-96231b3b80d8
* Use temporary instead of a local variable hereAlexey Samsonov2014-03-14
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203914 91177308-0d34-0410-b5e6-96231b3b80d8
* [C++11] Introduce ObjectFile::sections().Alexey Samsonov2014-03-13
| | | | | | | | | | | | | | | | | | Summary: This adds ObjectFile::section_iterator_range, that allows to write range-based for-loops running over all sections of a given file. Several files from lib/ are converted to the new interface. Similar fixes should be applied to a variety of llvm-* tools. Reviewers: rafael Reviewed By: rafael CC: llvm-commits Differential Revision: http://llvm-reviews.chandlerc.com/D3069 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203799 91177308-0d34-0410-b5e6-96231b3b80d8
* [C++11] DWARF parser: use SmallVector<std::unique_ptr> for parsed units in ↵Alexey Samsonov2014-03-13
| | | | | | DWARFContext, and delete custom destructors git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203770 91177308-0d34-0410-b5e6-96231b3b80d8
* [C++11] Convert DWARF parser to range-based for loopsAlexey Samsonov2014-03-13
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203766 91177308-0d34-0410-b5e6-96231b3b80d8
* Replace OwningPtr<T> with std::unique_ptr<T>.Ahmed Charles2014-03-06
| | | | | | | | | | This compiles with no changes to clang/lld/lldb with MSVC and includes overloads to various functions which are used by those projects and llvm which have OwningPtr's as parameters. This should allow out of tree projects some time to move. There are also no changes to libs/Target, which should help out of tree targets have time to move, if necessary. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203083 91177308-0d34-0410-b5e6-96231b3b80d8
* [C++11] Replace OwningPtr::take() with OwningPtr::release().Ahmed Charles2014-03-05
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202957 91177308-0d34-0410-b5e6-96231b3b80d8
* [C++11] Add 'override' keyword to virtual methods that override their base ↵Craig Topper2014-03-05
| | | | | | class. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202946 91177308-0d34-0410-b5e6-96231b3b80d8
* Switch all uses of LLVM_OVERRIDE to just use 'override' directly.Craig Topper2014-03-02
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202621 91177308-0d34-0410-b5e6-96231b3b80d8
* [C++11] Switch all uses of the llvm_move macro to use std::moveChandler Carruth2014-03-02
| | | | | | directly, and remove the macro. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202612 91177308-0d34-0410-b5e6-96231b3b80d8
* llvm-dwarfdump: Support for debug_line.dwo section for file names for type ↵David Blaikie2014-02-24
| | | | | | units under fission. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202091 91177308-0d34-0410-b5e6-96231b3b80d8
* Support DWARF discriminators in object streamer.Diego Novillo2014-02-14
| | | | | | | | | | | | | | | Summary: This adds support for emitting DWARF path discriminator values in the object streamer. It also changes the DWARF dumper to show discriminator values in the line table output. Reviewers: echristo CC: llvm-commits Differential Revision: http://llvm-reviews.chandlerc.com/D2794 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201427 91177308-0d34-0410-b5e6-96231b3b80d8
* make llvm-dwarfdump a little more resilient when parsing .debug_locAdrian Prantl2014-02-11
| | | | | | | | sections. The call to data.getUnsigned(&Offset, AddressSize) only increments Offset if the read succeeds, which will result in an infinite loop. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201179 91177308-0d34-0410-b5e6-96231b3b80d8
* Change the begin and end methods in ObjectFile to match the style guide.Rafael Espindola2014-02-10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201108 91177308-0d34-0410-b5e6-96231b3b80d8
* Simplify the handling of iterators in ObjectFile.Rafael Espindola2014-01-30
| | | | | | | | | | | | None of the object file formats reported error on iterator increment. In retrospect, that is not too surprising: no object format stores symbols or sections in a linked list or other structure that requires chasing pointers. As a consequence, all error checking can be done on begin() and end(). This reduces the text segment of bin/llvm-readobj in my machine from 521233 to 518526 bytes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200442 91177308-0d34-0410-b5e6-96231b3b80d8
* [Sparc] Add support for parsing DW_CFA_GNU_window_save. Venkatraman Govindaraju2014-01-26
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200127 91177308-0d34-0410-b5e6-96231b3b80d8
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