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* Record the DWARF version in MCContextOliver Stannard2014-05-01
| | | | | | | | | Record the DWARF version in MCContext, and use it when emitting the dwarf version into the debug info. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207739 91177308-0d34-0410-b5e6-96231b3b80d8
* Start fixing pr19147.Rafael Espindola2014-05-01
| | | | | | | This makes the coff writer compute the correct symbol value for the test in pr19147. The section is still incorrect, that will be fixed in a followup patch. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207728 91177308-0d34-0410-b5e6-96231b3b80d8
* Add missing breaks.Joerg Sonnenberger2014-04-30
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207723 91177308-0d34-0410-b5e6-96231b3b80d8
* Switch over getArch()'s result.Joerg Sonnenberger2014-04-30
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207721 91177308-0d34-0410-b5e6-96231b3b80d8
* Provide a version of getSymbolOffset that returns false on error.Rafael Espindola2014-04-30
| | | | | | | This simplifies ELFObjectWriter::SymbolValue a bit more. This new version will also be used in the COFF writer to fix pr19147. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207711 91177308-0d34-0410-b5e6-96231b3b80d8
* Simplify ELFObjectWriter::SymbolValue.Rafael Espindola2014-04-30
| | | | | | It now defers all offset computation to getSymbolOffset. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207674 91177308-0d34-0410-b5e6-96231b3b80d8
* ELFObjectWriter: deduplicate suffices in strtabHans Wennborg2014-04-30
| | | | | | | | | | | | | | | We already do this for shstrtab, so might as well do it for strtab. This extracts the string table building code into a separate class. The idea is to use it for other object formats too. I mostly wanted to do this for the general principle, but it does save a little bit on object file size. I tried this on a clang bootstrap and saved 0.54% on the sum of object file sizes (1.14 MB out of 212 MB for a release build). Differential Revision: http://reviews.llvm.org/D3533 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207670 91177308-0d34-0410-b5e6-96231b3b80d8
* Grammar fix.Rafael Espindola2014-04-30
| | | | | | Thanks to Saleem Abdulrasool for noticing it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207643 91177308-0d34-0410-b5e6-96231b3b80d8
* [ARM64] Ensure arm64_be is dealt with when emitting debug info.James Molloy2014-04-30
| | | | | | | This is a partial port of r204816 (cpirker "Elf support for MC-JIT runtime dynamic linker") from AArch64 to ARM64. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207625 91177308-0d34-0410-b5e6-96231b3b80d8
* Simplify getSymbolOffset.Rafael Espindola2014-04-30
| | | | | | | We can now use EvaluateAsValue to make it non recursive and remove some code duplication. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207604 91177308-0d34-0410-b5e6-96231b3b80d8
* Another missing include for MSVC.Benjamin Kramer2014-04-29
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207596 91177308-0d34-0410-b5e6-96231b3b80d8
* raw_ostream: Forward declare OpenFlags and include FileSystem.h only where ↵Benjamin Kramer2014-04-29
| | | | | | necessary. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207593 91177308-0d34-0410-b5e6-96231b3b80d8
* Parse and create GOT_PREL relocations.Joerg Sonnenberger2014-04-29
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207526 91177308-0d34-0410-b5e6-96231b3b80d8
* Centralize the handling of the thumb bit.Rafael Espindola2014-04-29
| | | | | | | | | | | | | This patch centralizes the handling of the thumb bit around MCStreamer::isThumbFunc and makes isThumbFunc handle aliases. This fixes a corner case, but the main advantage is having just one way to check if a MCSymbol is thumb or not. This should still be refactored to be ARM only, but at least now it is just one predicate that has to be refactored instead of 3 (isThumbFunc, ELF_Other_ThumbFunc, and SF_ThumbFunc). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207522 91177308-0d34-0410-b5e6-96231b3b80d8
* Add an option for evaluating past symbols.Rafael Espindola2014-04-28
| | | | | | | | | | | | | When evaluating an assembly expression for a relocation, we want to stop at MCSymbols that are in the symbol table, even if they are variables. This is needed since the semantics may require that the relocation use them. That is not the case when computing the value of a symbol in the symbol table. There are no relocations in this case and we have to keep going until we hit a section or find out that the expression doesn't have an assembly time value. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207445 91177308-0d34-0410-b5e6-96231b3b80d8
* Simplify ELFObjectWriter::ExecutePostLayoutBinding.Rafael Espindola2014-04-28
| | | | | | | No functionality change. This removes the last use of AliasedSymbol in ELFObjectWriter.cpp. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207424 91177308-0d34-0410-b5e6-96231b3b80d8
* Simplify isLocal().Rafael Espindola2014-04-28
| | | | | | No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207421 91177308-0d34-0410-b5e6-96231b3b80d8
* Don't include an invalid symbol in the symbol table.Rafael Espindola2014-04-28
| | | | | | | | | | | | The symbol table itself has no relocations, so it is not possible to represent things like a = undefined + 1 With the patch we just omit these variables. That matches the behaviour of the gnu assembler. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207419 91177308-0d34-0410-b5e6-96231b3b80d8
* Produce an error instead of a crash in an expr we cannot represent.Rafael Espindola2014-04-28
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207414 91177308-0d34-0410-b5e6-96231b3b80d8
* MC: range-loopifySaleem Abdulrasool2014-04-28
| | | | | | Use C++11 range-based loops rather than explicit constructors. NFC. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207393 91177308-0d34-0410-b5e6-96231b3b80d8
* Make getOrCreateSymbolData non virtual.Rafael Espindola2014-04-27
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207367 91177308-0d34-0410-b5e6-96231b3b80d8
* Avoid using MCSymbolData on the asm streamer.Rafael Espindola2014-04-27
| | | | | | | | Only the object streamers need to track if a symbol should be marked thumb or not. This ports the ELF case. The COFF case is not ported since it is currently not working for some other reason (I will report a bug). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207366 91177308-0d34-0410-b5e6-96231b3b80d8
* MC: restore behaviour of defaulting to ELFSaleem Abdulrasool2014-04-27
| | | | | | | This restores the previous behaviour of just assuming that if you dont specify a valid triple that you really meant the default triple with an ELF object file. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207349 91177308-0d34-0410-b5e6-96231b3b80d8
* Add WoA object file emission supportSaleem Abdulrasool2014-04-27
| | | | | | | | | | | | | | | | | | | | | | Introduce support for WoA PE/COFF object file emission from LLVM. Add the new target specific PE/COFF Streamer (ARMWinCOFFStreamer) that handles the ARM specific behaviour of PE/COFF object emission. ARM exception information is not yet emitted and is a TODO item. The ARM specific object writer (ARMWinCOFFObjectWriter) handles the ARM specific relocation handling in conjunction with the WinCOFFObjectWriter in the MC layer. The MC layer needs to be updated to deal with the relocation adjustments. Branch relocations are adjusted by 4 bytes (unlikely their ELF counterparts). Minor tweaks to switch multiple conditional checks into equivalent switch statements. The ObjectFileInfo is updated to relax the object file setup for Windows COFF. Move the architecture checks into an assertion. Windows COFF is currently only supported on x86, x86_64, and ARM (thumb). Rather than defaulting to ELF, we will refuse to generate an object file. This is better though as you do not get an (arbitrary) object file which is different from the request. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207345 91177308-0d34-0410-b5e6-96231b3b80d8
* MC: create X86WinCOFFStreamer for target specific behaviourSaleem Abdulrasool2014-04-27
| | | | | | | | | | This introduces a target specific streamer, X86WinCOFFStreamer, which handles the target specific behaviour (e.g. WinEH). This is mostly to ensure that differences between ARM and X86 remain disjoint and do not accidentally cross boundaries. This is the final staging change for enabling object emission for Windows on ARM. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207344 91177308-0d34-0410-b5e6-96231b3b80d8
* MC: rename WinCOFFStreamer and move declaration out-of-lineSaleem Abdulrasool2014-04-27
| | | | | | | | | This is in preparation for promoting WinCOFFStreamer to a base class which will be shared by the X86 and ARM specific target COFF streamers. Also add a new getOrCreateSymbolData interface (like MCELFStreamer) for the ARM COFF Streamer. This makes the COFFStreamer more similar to the ELFStreamer. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207343 91177308-0d34-0410-b5e6-96231b3b80d8
* MC: style tweaks to WinCOFFStreamerSaleem Abdulrasool2014-04-27
| | | | | | | Stylistic changes to prepare for splitting up the COFFStreamer into target specific streamers. Tweak some assertion messages. No functional change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207342 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix quadratic performance during debug compression due to sections x symbols ↵David Blaikie2014-04-25
| | | | | | | | | | | | | | | | iteration. When fixing the symbols in each compressed section we were iterating over all symbols for each compressed section. In extreme cases this could snowball severely (5min uncompressed -> 35min compressed) due to iterating over all symbols for each compressed section (large numbers of compressed sections can be generated by DWARF type units). To address this, build a map of the symbols in each section ahead of time, and access that map if a section is being compressed. This brings compile time for the aforementioned example down to ~6 minutes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207167 91177308-0d34-0410-b5e6-96231b3b80d8
* Spread some const around for non-mutating uses of MCSymbolData.David Blaikie2014-04-24
| | | | | | | | I discovered this const-hole while attempting to coalesnce the Symbol and SymbolMap data structures. There's some pending issues with that, but I figured this change was easy to flush early. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207124 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix memory leak of MCSymbolData in MCAsmStreamer.David Blaikie2014-04-24
| | | | | | | | | Leak identified by LSan and reported by Kostya Serebryany. Let's get a bit experimental here... in theory our minimum compiler versions support unordered_map. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207118 91177308-0d34-0410-b5e6-96231b3b80d8
* [C++] Use 'nullptr'.Craig Topper2014-04-24
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207083 91177308-0d34-0410-b5e6-96231b3b80d8
* MC: honour IMAGE_SCN_CNT_INITIALIZED_DATASaleem Abdulrasool2014-04-23
| | | | | | | Emit the flag to indicate to the assembler that a section contains data if there is pre-populated data present. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207028 91177308-0d34-0410-b5e6-96231b3b80d8
* Centralize handling of ELF_Other_ThumbFunc.Rafael Espindola2014-04-23
| | | | | | No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206988 91177308-0d34-0410-b5e6-96231b3b80d8
* Create MCTargetOptions.Evgeniy Stepanov2014-04-23
| | | | | | | | | | For now it contains a single flag, SanitizeAddress, which enables AddressSanitizer instrumentation of inline assembly. Patch by Yuri Gorshenin. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206971 91177308-0d34-0410-b5e6-96231b3b80d8
* Integrated assbemler, macros: added 'vararg' argument qualifier support.Stepan Dyatkovskiy2014-04-23
| | | | | | | | Note, currently we have no 'vararg' support for darwin macros. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206951 91177308-0d34-0410-b5e6-96231b3b80d8
* Change the prototype for MCContext::FatalError() so it can be calledKevin Enderby2014-04-22
| | | | | | | | | | | from places like MCCodeEmitter() in the MC backend when the MCContext is const. I was going to use this in my change for r206669 but Jim convinced me to use an assert there. But this still is a good tweak. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206923 91177308-0d34-0410-b5e6-96231b3b80d8
* Follow aliases when determining if a symbol is thumb.Rafael Espindola2014-04-22
| | | | | | This fixes pr19484. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206917 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix the assembler to print a better relocatable expression errorKevin Enderby2014-04-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | diagnostic that includes location information. Currently if one has this assembly: .quad (0x1234 + (4 * SOME_VALUE)) where SOME_VALUE is undefined ones gets the less than useful error message with no location information: % clang -c x.s clang -cc1as: fatal error: error in backend: expected relocatable expression With this fix one now gets a more useful error message with location information: % clang -c x.s x.s:5:8: error: expected relocatable expression .quad (0x1234 + (4 * SOME_VALUE)) ^ To do this I plumbed the SMLoc through the MCObjectStreamer EmitValue() and EmitValueImpl() interfaces so it could be used when creating the MCFixup. rdar://12391022 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206906 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove DOS CRLF.NAKAMURA Takumi2014-04-22
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206894 91177308-0d34-0410-b5e6-96231b3b80d8
* [Modules] Fix potential ODR violations by sinking the DEBUG_TYPEChandler Carruth2014-04-22
| | | | | | | definition below all the header #include lines. This updates most of the miscellaneous other lib/... directories. A few left though. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206845 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
* Patch by Ray Donnelly to print register names instead of numbers.Yaron Keren2014-04-19
| | | | | | | | http://reviews.llvm.org/D3422 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206683 91177308-0d34-0410-b5e6-96231b3b80d8
* Add parens to appease GCC warning.David Blaikie2014-04-19
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206678 91177308-0d34-0410-b5e6-96231b3b80d8
* Compress debug sections only when beneficial.David Blaikie2014-04-18
| | | | | | | | | Both ZLIB and the debug info compressed section header ("ZLIB" + the size of the uncompressed data) take some constant overhead so in some cases the compressed data is actually larger than the uncompressed data. In these cases, just don't compress or rename the section at all. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206659 91177308-0d34-0410-b5e6-96231b3b80d8
* Update the fragments of symbols in compressed sections.David Blaikie2014-04-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | While unnamed relocations are already cached in side tables in ELFObjectWriter::RecordRelocation, symbols still need their fragments updated to refer to the newly compressed fragment (even if that fragment isn't big enough to fit the offset). Even though we only create temporary symbols in debug info sections this comes up in 32 bit builds where even temporary symbols in mergeable sections (such as debug_str) have to be emitted as named symbols. I tried a few other ways to do this but they all didn't work for various reasons: 1) Canonicalize the MCSymbolData in RecordRelocation, nulling out the Fragment (so it didn't have to be updated by CompressDebugSection). This doesn't work because some code relies on symbols having fragments to indicate that they're defined, I think. 2) Canonicalize the MCSymbolData in RecordRelocation to be "first fragment + absolute offset" so it would be cheaper to just test and update the fragment in CompressDebugSections. This doesn't work because the offset computed in RecordRelocation isn't that of the symbol's fragment, it's the passed in fragment (I haven't figured out what that fragment is - perhaps it's the location where the relocation is to be written). And if the fragment offset has to be computed only for this use we might as well just do it when we need to, in CompressDebugSection. I also added an assert to help catch this a bit more clearly, even though it is UB. The test case improvements would either assert fail and/or valgrind vail without the fix, even if they wouldn't necessarily fail the FileCheck output. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206653 91177308-0d34-0410-b5e6-96231b3b80d8
* Add range access to MCAssembler's symbol collection.David Blaikie2014-04-18
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206631 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r206565 (and r206566 which updated tests).Chandler Carruth2014-04-18
| | | | | | | | | | | | | | This commit was attributed to a different person from the person who posted the patch to the list, and the person who posted it the list claimed when they did that they were not the author, but that the author was yet a third person. I don't know what is going on here, but reverting until the attribution is clear and the author has explicitly contributed the patch. Also, the review hasn't really involved any of the MC maintainers and that seems questionable too. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206576 91177308-0d34-0410-b5e6-96231b3b80d8
* Patch by Ray Donnelly.Yaron Keren2014-04-18
| | | | | | | | Emit WIN64 SEH registers by name instead of just number. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206565 91177308-0d34-0410-b5e6-96231b3b80d8
* MC: rework static_assert to be MSVC compatibleSaleem Abdulrasool2014-04-17
| | | | | | | | Visual Studio does not permit referencing a structure member as a static field for sizeof calculations. Resort to a pointer cast which is compatible across Visual Studio and other compilers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206445 91177308-0d34-0410-b5e6-96231b3b80d8
* AArch64/ARM64: port across stub handling for ELF C++ exceptions.Tim Northover2014-04-16
| | | | | | | | The most important part here is that we should actuall emit the stubs we refer to in the exception table, but as a side issue this uses more sensible & GCC compatible representations for some of the bits of information. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206380 91177308-0d34-0410-b5e6-96231b3b80d8
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