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* Fix BB after r354328.George Rimar2019-02-191-4/+2
| | | | | | | | | | | | | | | | | | | | | Bot: http://lab.llvm.org:8011/builders/lld-x86_64-darwin13/builds/30188/steps/build_Lld/logs/stdio Error: /Users/buildslave/as-bldslv9_new/lld-x86_64-darwin13/llvm.src/lib/ObjectYAML/ELFYAML.cpp:1013:15: error: unused variable 'Object' [-Werror,-Wunused-variable] const auto *Object = static_cast<ELFYAML::Object *>(IO.getContext()); ^ /Users/buildslave/as-bldslv9_new/lld-x86_64-darwin13/llvm.src/lib/ObjectYAML/ELFYAML.cpp:1023:15: error: unused variable 'Object' [-Werror,-Wunused-variable] const auto *Object = static_cast<ELFYAML::Object *>(IO.getContext()); Fix: change const auto *Object = static_cast<ELFYAML::Object *>(IO.getContext()); assert(Object && "The IO context is not initialized"); to assert(!IO.getContext() && "The IO context is initialized already"); llvm-svn: 354329
* [obj2yaml][yaml2obj] - Add support of parsing/dumping of the .gnu.version_r ↵George Rimar2019-02-191-0/+32
| | | | | | | | | | | | | | | | | | | | section. The section is described here: https://refspecs.linuxfoundation.org/LSB_1.3.0/gLSB/gLSB/symverrqmts.html Patch just teaches obj2yaml/yaml2obj to dump and parse such sections. We did the finalization of string tables very late, and I had to move the logic to make it a bit earlier. That was needed in this patch since .gnu.version_r adds strings to .dynstr. This might also be useful for implementing other special sections. Everything else changed in this patch seems to be straightforward. Differential revision: https://reviews.llvm.org/D58119 llvm-svn: 354328
* [yaml2obj/obj2yaml] - Move `Info` field out from `Section` class.George Rimar2019-02-121-4/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | ELFYAML.h contains a `Section` class which is a base for a few other sections classes that are used for mapping different section types. `Section` has a `StringRef Info` field used for storing sh_info. At the same time, sh_info has very different meanings for sections and cannot be processed in a similar way generally, for example ELFDumper does not handle it in `dumpCommonSection` but do that in `dumpGroup` and `dumpCommonRelocationSection` respectively. At this moment, we have and handle it as a string, because that was possible for the current use case. But also it can simply be a number: For SHT_GNU_verdef is "The number of version definitions within the section." The patch moves `Info` field out to be able to have it as a number. With that change, each class will be able to decide what type and purpose of the sh_info field it wants to use. I also had to edit 2 test cases. This is because patch fixes a bug. Previously we accepted yaml files with Info fields for all sections (for example, for SHT_DYNSYM too). But we do not handle it and the resulting objects had zero sh_info fields set for such sections. Now it is accepted only for sections that supports it. Differential revision: https://reviews.llvm.org/D58054 llvm-svn: 353810
* [lib/ObjectYAML] - Fix BB after r353607 [2]. NFC.George Rimar2019-02-091-2/+1
| | | | | | | | | | | The second and the last place it seems. Error was: [ 4%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/Error.cpp.o /Users/buildslave/as-bldslv9_new/lld-x86_64-darwin13/llvm.src/lib/ObjectYAML/ELFYAML.cpp:993:15: error: unused variable 'Object' [-Werror,-Wunused-variable] const auto *Object = static_cast<ELFYAML::Object *>(IO.getContext()); llvm-svn: 353609
* [lib/ObjectYAML] - Fix BB after r353607. NFC.George Rimar2019-02-091-2/+1
| | | | | | | | | | Error was: [ 4%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/DAGDeltaAlgorithm.cpp.o /Users/buildslave/as-bldslv9_new/lld-x86_64-darwin13/llvm.src/lib/ObjectYAML/ELFYAML.cpp:666:15: error: unused variable 'Object' [-Werror,-Wunused-variable] const auto *Object = static_cast<ELFYAML::Object *>(IO.getContext()); (http://lab.llvm.org:8011/builders/lld-x86_64-darwin13/builds/29920) llvm-svn: 353608
* [yaml2obj][obj2yaml] - Add support for dumping/parsing .dynamic sections.George Rimar2019-02-091-0/+46
| | | | | | | | | This teaches the tools to parse and dump the .dynamic section and its dynamic tags. Differential revision: https://reviews.llvm.org/D57691 llvm-svn: 353606
* [WebAssembly] Add symbol flag to the binary format llvm.usedSam Clegg2019-02-071-0/+1
| | | | | | | | | | | | | | Summary: Rather than add a new attribute See https://github.com/WebAssembly/tool-conventions/issues/64 Subscribers: dschuff, jgravelle-google, aheejin, sunfish, rupprecht, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D57864 llvm-svn: 353360
* [yaml2obj]Allow number for ELF symbol typeJames Henderson2019-02-061-0/+1
| | | | | | | | | | | | | yaml2obj previously only recognised standard STT_* names, and didn't allow arbitrary numbers. This change allows the user to specify a number for the type instead. It also adds a test to verify the existing behaviour for obj2yaml for unkown symbol types. Reviewed by: grimar Differential Revision: https://reviews.llvm.org/D57822 llvm-svn: 353315
* [yaml::BinaryRef] Slight perf tuning (for llvm-exegesis analysis mode)Roman Lebedev2019-02-061-3/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Summary: llvm-exegesis uses this functionality to read it's benchmark dumps. This reading of `.yaml`s takes ~60% of runtime for 14656 benchmark points (i.e. one sweep over all x86 instructions), but only 30% of time for 3x as much benchmark points. In particular, this `BinaryRef` appears to be an obvious pain point. Without patch: ``` $ perf stat -r 25 ./bin/llvm-exegesis -mode=analysis -analysis-epsilon=1.0 -benchmarks-file=/tmp/benchmarks-inverse_throughput-onefull.yaml -analysis-clusters-output-file="" -analysis-inconsistencies-output-file=/tmp/clusters-orig.html no exegesis target for x86_64-unknown-linux-gnu, using default Parsed 14656 benchmark points Printing sched class consistency analysis results to file '/tmp/clusters-orig.html' ... no exegesis target for x86_64-unknown-linux-gnu, using default Parsed 14656 benchmark points Printing sched class consistency analysis results to file '/tmp/clusters-orig.html' Performance counter stats for './bin/llvm-exegesis -mode=analysis -analysis-epsilon=1.0 -benchmarks-file=/tmp/benchmarks-inverse_throughput-onefull.yaml -analysis-clusters-output-file= -analysis-inconsistencies-output-file=/tmp/clusters-orig.html' (25 runs): 972.86 msec task-clock # 0.994 CPUs utilized ( +- 0.25% ) 30 context-switches # 30.774 M/sec ( +- 21.74% ) 0 cpu-migrations # 0.370 M/sec ( +- 67.81% ) 11873 page-faults # 12211.512 M/sec ( +- 0.00% ) 3898373408 cycles # 4009682.186 GHz ( +- 0.25% ) (83.12%) 360399748 stalled-cycles-frontend # 9.24% frontend cycles idle ( +- 0.54% ) (83.24%) 1099450483 stalled-cycles-backend # 28.20% backend cycles idle ( +- 0.59% ) (33.63%) 4910528820 instructions # 1.26 insn per cycle # 0.22 stalled cycles per insn ( +- 0.13% ) (50.21%) 1111976775 branches # 1143726625.854 M/sec ( +- 0.10% ) (66.77%) 23248474 branch-misses # 2.09% of all branches ( +- 0.19% ) (83.29%) 0.97850 +- 0.00647 seconds time elapsed ( +- 0.66% ) ``` With the patch: ``` $ perf stat -r 25 ./bin/llvm-exegesis -mode=analysis -analysis-epsilon=1.0 -benchmarks-file=/tmp/benchmarks-inverse_throughput-onefull.yaml -analysis-clusters-output-file="" -analysis-inconsistencies-output-file=/tmp/clusters-new.html no exegesis target for x86_64-unknown-linux-gnu, using default Parsed 14656 benchmark points Printing sched class consistency analysis results to file '/tmp/clusters-new.html' ... no exegesis target for x86_64-unknown-linux-gnu, using default Parsed 14656 benchmark points Printing sched class consistency analysis results to file '/tmp/clusters-new.html' Performance counter stats for './bin/llvm-exegesis -mode=analysis -analysis-epsilon=1.0 -benchmarks-file=/tmp/benchmarks-inverse_throughput-onefull.yaml -analysis-clusters-output-file= -analysis-inconsistencies-output-file=/tmp/clusters-new.html' (25 runs): 905.29 msec task-clock # 0.999 CPUs utilized ( +- 0.11% ) 15 context-switches # 16.533 M/sec ( +- 32.27% ) 0 cpu-migrations # 0.000 K/sec 11873 page-faults # 13121.789 M/sec ( +- 0.00% ) 3627759720 cycles # 4009283.100 GHz ( +- 0.11% ) (83.19%) 370401480 stalled-cycles-frontend # 10.21% frontend cycles idle ( +- 0.22% ) (83.19%) 1007114438 stalled-cycles-backend # 27.76% backend cycles idle ( +- 0.34% ) (33.62%) 4414014304 instructions # 1.22 insn per cycle # 0.23 stalled cycles per insn ( +- 0.08% ) (50.36%) 1003751700 branches # 1109314021.971 M/sec ( +- 0.07% ) (66.97%) 24611010 branch-misses # 2.45% of all branches ( +- 0.10% ) (83.41%) 0.90593 +- 0.00105 seconds time elapsed ( +- 0.12% ) ``` So this decreases the overall run time of llvm-exegesis analysis mode (on one sweep) by roughly -7%. To be noted, `BinaryRef::writeAsBinary()` change is the reason for the perf changes, usage of `llvm::isHexDigit()` instead of `isxdigit()` does not appear to have any perf impact, i have only changed it "for symmetry". `writeAsBinary()` change is correct, it produces identical de-hex-ified buffer, and the final output is thus identical: ``` $ sha512sum /tmp/clusters-* db4bbd904fe8840853b589b032c5041bc060b91bcd9c27b914b56581fbc473550eea74b852238c79963b5adf2419f379e9f5db76784048b48e3937f9f3e732bf /tmp/clusters-new.html db4bbd904fe8840853b589b032c5041bc060b91bcd9c27b914b56581fbc473550eea74b852238c79963b5adf2419f379e9f5db76784048b48e3937f9f3e732bf /tmp/clusters-orig.html ``` Reviewers: silvas, espindola, sbc100, zturner, courbet, gchatelet Reviewed By: gchatelet Subscribers: tschuett, RKSimon, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D57699 llvm-svn: 353282
* [COFF] Add new relocation types.Martin Storsjo2019-01-271-0/+3
| | | | | | Differential Revision: https://reviews.llvm.org/D57291 llvm-svn: 352324
* Update the file headers across all of the LLVM projects in the monorepoChandler Carruth2019-01-1915-60/+45
| | | | | | | | | | | | | | | | | to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
* [WebAssembly] Parse llvm.ident into producers sectionThomas Lively2019-01-171-0/+18
| | | | llvm-svn: 351413
* Revert "[WebAssembly] Parse llvm.ident into producers section"Thomas Lively2019-01-171-18/+0
| | | | | | This reverts commit eccdbba3a02a33e13b5262e92200a33e2ead873d. llvm-svn: 351410
* [WebAssembly] Parse llvm.ident into producers sectionThomas Lively2019-01-161-0/+18
| | | | | | | | | | | | | | Summary: Everything before the word "version" is the tool, and everything after the word "version" is the version. Reviewers: aheejin, dschuff Subscribers: sbc100, jgravelle-google, sunfish, llvm-commits Differential Revision: https://reviews.llvm.org/D56742 llvm-svn: 351399
* [WebAssembly] Massive instruction renamingThomas Lively2019-01-081-4/+4
| | | | | | | | | | | | | | | Summary: An automated renaming of all the instructions listed at https://github.com/WebAssembly/spec/issues/884#issuecomment-426433329 as well as some similarly-named identifiers. Reviewers: aheejin, dschuff, aardappel Subscribers: sbc100, jgravelle-google, eraman, sunfish, jfb, llvm-commits Differential Revision: https://reviews.llvm.org/D56338 llvm-svn: 350609
* [ObjectYAML] [COFF] Support multiple symbols with the same nameMartin Storsjo2019-01-071-1/+2
| | | | | | Differential Revision: https://reviews.llvm.org/D56294 llvm-svn: 350566
* [yaml2obj/obj2yaml] - Support dumping/parsing ABI version.George Rimar2018-12-201-0/+1
| | | | | | | | | | | These tools were assuming ABI version is 0, that is not always true. Patch teaches them to work with that field. Differential revision: https://reviews.llvm.org/D55884 llvm-svn: 349737
* [WebAssembly] Update dylink section parsingSam Clegg2018-12-121-0/+1
| | | | | | | | | | This updates the format of the dylink section in accordance with recent "spec" change: https://github.com/WebAssembly/tool-conventions/pull/77 Differential Revision: https://reviews.llvm.org/D55609 llvm-svn: 348989
* [Hexagon] Add missing flags to ELF YAMLIOKrzysztof Parzyszek2018-11-281-0/+8
| | | | llvm-svn: 347768
* [WebAssembly] Add support for dylink section in object formatSam Clegg2018-11-141-1/+14
| | | | | | | | See https://github.com/WebAssembly/tool-conventions/blob/master/DynamicLinking.md. Differential Revision: https://reviews.llvm.org/D54490 llvm-svn: 346880
* [WebAssembly] Add support for the event sectionHeejin Ahn2018-11-141-0/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Summary: This adds support for the 'event section' specified in the exception handling proposal. (This was named 'exception section' first, but later renamed to 'event section' to take possibilities of other kinds of events into consideration. But currently we only store exception info in this section.) The event section is added between the global section and the export section. This is for ease of validation per request of the V8 team. This patch: - Creates the event symbol type, which is a weak symbol - Makes 'throw' instruction take the event symbol '__cpp_exception' - Adds relocation support for events - Adds WasmObjectWriter / WasmObjectFile (Reader) support - Adds obj2yaml / yaml2obj support - Adds '.eventtype' printing support Reviewers: dschuff, sbc100, aardappel Subscribers: jgravelle-google, sunfish, llvm-commits Differential Revision: https://reviews.llvm.org/D54096 llvm-svn: 346825
* [WebAssembly] Add shared memory support to limits fieldDerek Schuff2018-11-061-0/+1
| | | | | | | | | | Support the IS_SHARED bit in the memory limits flag word. The compiler does not create object files with memory definitions, but the field is used by the linker. Differential Revision: https://reviews.llvm.org/D54131 llvm-svn: 346246
* AMDGPU: Add sram-ecc featureKonstantin Zhuravlyov2018-11-051-0/+1
| | | | | | Differential Revision: https://reviews.llvm.org/D53222 llvm-svn: 346177
* Fix printing bug in pdb2yaml.Zachary Turner2018-10-301-1/+1
| | | | | | | We were using the wrong enum table when mapping enum values to strings for public symbol flags. llvm-svn: 345622
* [AMDGPU] Defined gfx909 Raven Ridge 2Tim Renouf2018-10-241-0/+1
| | | | | | | Differential Revision: https://reviews.llvm.org/D53418 Change-Id: Ie3d054f2e956c2768988c0f4c0ffd29a47294eef llvm-svn: 345120
* [WebAssembly] Add V128 value type to binary formatThomas Lively2018-09-201-0/+1
| | | | | | | | | | | | | | Summary: Adds the necessary support to lib/ObjectYAML and fixes SIMD calls to allow the tests to work. Also removes some dead code that would otherwise have to have been updated. Reviewers: aheejin, dschuff, sbc100 Subscribers: jgravelle-google, sunfish, llvm-commits Differential Revision: https://reviews.llvm.org/D52105 llvm-svn: 342689
* [PDB] Write FPO Data to the PDB.Zachary Turner2018-09-111-1/+1
| | | | llvm-svn: 342003
* [WebAssembly] clang-format (NFC)Heejin Ahn2018-09-051-8/+8
| | | | | | | | | | | | Summary: This patch runs clang-format on all wasm-only files. Reviewers: aardappel, dschuff, sunfish, tlively Subscribers: MatzeB, sbc100, jgravelle-google, llvm-commits Differential Revision: https://reviews.llvm.org/D51447 llvm-svn: 341439
* [yaml2obj] - Add a support for changing EntSize.George Rimar2018-08-071-0/+1
| | | | | | | | | | I was trying to add a test case for LLD and found that it is impossible to set sh_entsize via yaml. The patch implements the missing part. Differential revision: https://reviews.llvm.org/D50235 llvm-svn: 339113
* [CodeView] Minimal support for S_UNAMESPACE recordsAlexandre Ganea2018-07-311-0/+4
| | | | | | Differential Revision: https://reviews.llvm.org/D50007 llvm-svn: 338417
* MC: Implement support for new .addrsig and .addrsig_sym directives.Peter Collingbourne2018-07-171-0/+1
| | | | | | | | | Part of the address-significance tables proposal: http://lists.llvm.org/pipermail/llvm-dev/2018-May/123514.html Differential Revision: https://reviews.llvm.org/D47744 llvm-svn: 337328
* [llvm-readobj] Add experimental support for SHT_RELR sectionsJake Ehrlich2018-06-281-0/+2
| | | | | | | | | | | | | | | This change adds experimental support for SHT_RELR sections, proposed here: https://groups.google.com/forum/#!topic/generic-abi/bX460iggiKg Definitions for the new ELF section type and dynamic array tags, as well as the encoding used in the new section are all under discussion and are subject to change. Use with caution! Author: rahulchaudhry Differential Revision: https://reviews.llvm.org/D47919 llvm-svn: 335922
* [MC] Add assembler support for .cg_profile.Michael J. Spencer2018-06-021-0/+1
| | | | | | | | | | | | | | | Object FIle Representation At codegen time this is emitted into the ELF file a pair of symbol indices and a weight. In assembly it looks like: .cg_profile a, b, 32 .cg_profile freq, a, 11 .cg_profile freq, b, 20 When writing an ELF file these are put into a SHT_LLVM_CALL_GRAPH_PROFILE (0x6fff4c02) section as (uint32_t, uint32_t, uint64_t) tuples as (from symbol index, to symbol index, weight). Differential Revision: https://reviews.llvm.org/D44965 llvm-svn: 333823
* Resubmit [pdb] Change /DEBUG:GHASH to emit 8 byte hashes."Zachary Turner2018-05-171-5/+9
| | | | | | | This fixes the remaining failing tests, so resubmitting with no functional change. llvm-svn: 332676
* Revert "[pdb] Change /DEBUG:GHASH to emit 8 byte hashes."Zachary Turner2018-05-171-15/+5
| | | | | | | A few tests haven't been properly updated, so reverting while I have time to investigate proper fixes. llvm-svn: 332672
* [pdb] Change /DEBUG:GHASH to emit 8 byte hashes.Zachary Turner2018-05-171-5/+15
| | | | | | | | | | | | | | | | Previously we emitted 20-byte SHA1 hashes. This is overkill for identifying debug info records, and has the negative side effect of making object files bigger and links slower. By using only the last 8 bytes of a SHA1, we get smaller object files and ~10% faster links. This modifies the format of the .debug$H section by adding a new value for the hash algorithm field, so that the linker will still work when its object files have an old format. Differential Revision: https://reviews.llvm.org/D46855 llvm-svn: 332669
* Move helper classes into anonymous namespaces. NFCI.Benjamin Kramer2018-05-151-0/+2
| | | | llvm-svn: 332400
* Remove \brief commands from doxygen comments.Adrian Prantl2018-05-012-3/+3
| | | | | | | | | | | | | | | | We've been running doxygen with the autobrief option for a couple of years now. This makes the \brief markers into our comments redundant. Since they are a visual distraction and we don't want to encourage more \brief markers in new code either, this patch removes them all. Patch produced by for i in $(git grep -l '\\brief'); do perl -pi -e 's/\\brief //g' $i & done Differential Revision: https://reviews.llvm.org/D46290 llvm-svn: 331272
* AMDGPU: Add Vega12 and Vega20Matt Arsenault2018-04-301-0/+2
| | | | | | | | Changes by Matt Arsenault Konstantin Zhuravlyov llvm-svn: 331215
* [WebAssembly] Write DWARF data into wasm object fileSam Clegg2018-04-261-0/+3
| | | | | | | | | | | - Writes ".debug_XXX" into corresponding custom sections. - Writes relocation records into "reloc.debug_XXX" sections. Patch by Yury Delendik! Differential Revision: https://reviews.llvm.org/D44184 llvm-svn: 330982
* [WebAssembly] Add version to object file metadataSam Clegg2018-04-261-0/+1
| | | | | | | | | | Summary: See https://github.com/WebAssembly/tool-conventions/issues/54 Subscribers: jfb, dschuff, jgravelle-google, aheejin, sunfish, llvm-commits Differential Revision: https://reviews.llvm.org/D46069 llvm-svn: 330969
* [ObjectYAML] Add ability for DWARFYAML to calculate DIE lengthsJonas Devlieghere2018-04-201-4/+46
| | | | | | | | | | | | | | | | | | | | This patch adds the ability for the ObjectYAML DWARFEmitter to calculate the lengths of DIEs. This is accomplished by creating a DIEFixupVisitor class which traverses the DWARF DIEs to calculate and fix up the lengths in the Compile Unit header. The DIEFixupVisitor can be extended in the future to enable more complex fix ups which will enable simplified YAML string representations. This is also very useful when using the YAML format in unit tests because you no longer need to know the length of the compile unit when writing the YAML string. Differential commandeered from Chris Bieneman (beanz) Differential revision: https://reviews.llvm.org/D30666 llvm-svn: 330421
* Fix line endings (CR/LF -> LF) introduced by rL329613Alexandre Ganea2018-04-101-818/+818
| | | | | reviewer: zturner llvm-svn: 329646
* [Debuginfo][COFF] Minimal serialization support for precompiled types recordsAlexandre Ganea2018-04-092-806/+823
| | | | | | | | | | | | | This change adds support for the LF_PRECOMP and LF_ENDPRECOMP records required to read/write Microsoft precompiled types .objs. See https://en.wikipedia.org/wiki/Precompiled_header#Microsoft_Visual_C_and_C++ This also adds handling for the .debug$P section, which is actually a .debug$T section in disguise, found only in precompiled .objs. Differential Revision: https://reviews.llvm.org/D45283 llvm-svn: 329613
* Reland "[DebugInfo] Support DWARF expressions in eh_frame"Rafael Auler2018-03-081-0/+1
| | | | | | | | | | Summary: Original change was D43313 (r326932) and reverted by r326953 because it broke an LLD test and a windows build. The LLD test was already fixed in lld commit r326944 (thanks maskray). This is the original change with the windows build fixed. llvm-svn: 326970
* Revert r326932: [DebugInfo] Support DWARF expressions in eh_frameRui Ueyama2018-03-071-1/+0
| | | | | | This reverts commit rr326932 because it broke lld/test/ELF/eh-frame-hdr-augmentation.s. llvm-svn: 326953
* [DebugInfo] Support DWARF expressions in eh_frameRafael Auler2018-03-071-0/+1
| | | | | | | | | | | | | | | | | | This patch enhances DWARFDebugFrame with the capability of parsing and printing DWARF expressions in CFI instructions. It also makes FDEs and CIEs accessible to lib users, so they can process them in client tools that rely on LLVM. To make it self-contained with a test case, it teaches llvm-readobj to be able to dump EH frames and checks they are correct in a unit test. The llvm-readobj code is Maksim Panchenko's work (maksfb). Reviewers: JDevlieghere, espindola Reviewed By: JDevlieghere Differential Revision: https://reviews.llvm.org/D43313 llvm-svn: 326932
* [WebAssembly] Remove DataSize from linking metadata sectionSam Clegg2018-02-271-1/+0
| | | | | | | | | | | Neither the linker nor the runtime need this information anymore. We were originally using this to model BSS size but the plan is now to use the segment metadata to allow for BSS segments. Differential Revision: https://reviews.llvm.org/D41366 llvm-svn: 326267
* [WebAssembly] Add first claass symbol table to wasm objectsSam Clegg2018-02-231-2/+27
| | | | | | | | | | | | | | | | | | | | This is combination of two patches by Nicholas Wilson: 1. https://reviews.llvm.org/D41954 2. https://reviews.llvm.org/D42495 Along with a few local modifications: - One change I made was to add the UNDEFINED bit to the binary format to avoid the extra byte used when writing data symbols. Although this bit is redundant for other symbols types (i.e. undefined can be implied if a function or global is a wasm import) - I prefer to be explicit and consistent and not have derived flags. - Some field renaming. - Some reverting of unrelated minor changes. - No test output differences. Differential Revision: https://reviews.llvm.org/D43147 llvm-svn: 325860
* AMDGPU: Bring elf flags in sync with the specKonstantin Zhuravlyov2018-02-161-2/+31
| | | | | | | | | | | - Add MACH flags - Add XNACK flag - Add reserved flags - Minor cleanups in docs Differential Revision: https://reviews.llvm.org/D43356 llvm-svn: 325399
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