summaryrefslogtreecommitdiffstats
path: root/llvm/lib/Bitcode
Commit message (Collapse)AuthorAgeFilesLines
...
* [ThinLTO] Rename HasSection to NoRename (NFC)Teresa Johnson2016-10-282-3/+3
| | | | | | | | | | | | | | Summary: This is in preparation for a change to utilize this flag for symbols referenced/defined in either inline or module level assembly. Reviewers: mehdi_amini Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D26048 llvm-svn: 285376
* BitcodeReader: Require clients to read the block info block at most once.Peter Collingbourne2016-10-271-2/+2
| | | | | | | | | | | | This change makes it the client's responsibility to call ReadBlockInfoBlock() at most once. This is in preparation for a future change that will allow there to be multiple block info blocks. See also: http://lists.llvm.org/pipermail/llvm-dev/2016-October/106512.html Differential Revision: https://reviews.llvm.org/D26016 llvm-svn: 285350
* DebugInfo: fix incorrect alignment type (NFC)Victor Leschuk2016-10-261-2/+13
| | | | | | | | | Change type of some missed DebugInfo-related alignment variables, that are still uint64_t, to uint32_t. Original change introduced in r284482. llvm-svn: 285242
* Fix spelling mistake in comment.Simon Pilgrim2016-10-201-1/+1
| | | | llvm-svn: 284714
* Fix MSVC bool -> uint64_t promotion warningSimon Pilgrim2016-10-201-1/+1
| | | | llvm-svn: 284713
* DebugInfo: preparation to implement DW_AT_alignmentVictor Leschuk2016-10-202-7/+27
| | | | | | | | | | | | - Add alignment attribute to DIVariable family - Modify bitcode format to match new DIVariable representation - Update tests to match these changes (also add bitcode upgrade test) - Expect that frontend passes non-zero align value only when it is not default (was forcibly aligned by alignas()/_Alignas()/__atribute__(aligned()) Differential Revision: https://reviews.llvm.org/D25073 llvm-svn: 284678
* Remove LLVM_NOEXCEPT and replace it with noexceptReid Kleckner2016-10-191-1/+1
| | | | | | | Now that we have dropped MSVC 2013, all supported compilers support noexcept and we can drop this portability macro. llvm-svn: 284672
* DebugInfo: change alignment type from uint64_t to uint32_t to save space.Victor Leschuk2016-10-181-1/+3
| | | | | | | | | In futher patches we shall have alignment field added to DIVariable family and switching from uint64_t to uint32_t will save 4 bytes per variable. Differential Revision: https://reviews.llvm.org/D25620 llvm-svn: 284482
* ThinLTO: handles modules with empty summariesMehdi Amini2016-10-081-2/+2
| | | | | | | | | | | | | We need to add an entry in the combined-index for modules that have a hash but otherwise empty summary, this is needed so that we can get the hash for the module. Also, if no entry is present in the combined index for a module, we need to skip it when trying to compute a cache entry. Differential Revision: https://reviews.llvm.org/D25300 llvm-svn: 283654
* Use StringRef in Pass/PassManager APIs (NFC)Mehdi Amini2016-10-011-1/+1
| | | | llvm-svn: 283004
* [thinlto] Basic thinlto fdo heuristicPiotr Padlewski2016-09-262-31/+46
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Summary: This patch improves thinlto importer by importing 3x larger functions that are called from hot block. I compared performance with the trunk on spec, and there were about 2% on povray and 3.33% on milc. These results seems to be consistant and match the results Teresa got with her simple heuristic. Some benchmarks got slower but I think they are just noisy (mcf, xalancbmki, omnetpp)- running the benchmarks again with more iterations to confirm. Geomean of all benchmarks including the noisy ones were about +0.02%. I see much better improvement on google branch with Easwaran patch for pgo callsite inlining (the inliner actually inline those big functions) Over all I see +0.5% improvement, and I get +8.65% on povray. So I guess we will see much bigger change when Easwaran patch will land (it depends on new pass manager), but it is still worth putting this to trunk before it. Implementation details changes: - Removed CallsiteCount. - ProfileCount got replaced by Hotness - hot-import-multiplier is set to 3.0 for now, didn't have time to tune it up, but I see that we get most of the interesting functions with 3, so there is no much performance difference with higher, and binary size doesn't grow as much as with 10.0. Reviewers: eraman, mehdi_amini, tejohnson Subscribers: mehdi_amini, llvm-commits Differential Revision: https://reviews.llvm.org/D24638 llvm-svn: 282437
* BitcodeReader: Deduplicate code. NFC.Peter Collingbourne2016-09-231-125/+75
| | | | | | Differential Revision: https://reviews.llvm.org/D24852 llvm-svn: 282272
* [ThinLTO] Always emit a summary when compiling in ThinLTO modeTeresa Johnson2016-09-202-8/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Summary: Emit an empty summary section, instead of no summary section, when there are no global variables in the index. This ensures that LTO will treat these files as ThinLTO inputs, instead of as regular LTO inputs. In addition to not being what the user likely intended when compiling with -flto=thin, the current behavior is problematic for distributed build systems that expect to get ThinLTO index and imports files back for each input compiled with -flto=thin. Combining into a single regular LTO module also reduces the backend parallelism. And in the case where the index was suppressed due to uses in inline assembly, combining into a single LTO module could provoke renaming of duplicates that we were trying to prevent by suppressing the index. This change required a couple of fixes to handle the empty summary section. Reviewers: mehdi_amini Subscribers: mehdi_amini, llvm-commits, pcc Differential Revision: https://reviews.llvm.org/D24779 llvm-svn: 282037
* BitcodeWriter: fix emission of invoke when calling a var-arg function with ↵Mehdi Amini2016-09-191-1/+1
| | | | | | operand bundles llvm-svn: 281940
* Don't create a SymbolTable in Function when the LLVMContext discards value ↵Mehdi Amini2016-09-171-1/+2
| | | | | | | | | | | | | | names (NFC) The ValueSymbolTable is used to detect name conflict and rename instructions automatically. This is not needed when the value names are automatically discarded by the LLVMContext. No functional change intended, just saving a little bit of memory. This is a recommit of r281806 after fixing the accessor to return a pointer instead of a reference and updating all the call-sites. llvm-svn: 281813
* Fix auto-upgrade of TBAA tags in Bitcode ReaderMehdi Amini2016-09-141-10/+3
| | | | | | | | | | | | | | | | | | If TBAA is on an intrinsic and it gets upgraded, it'll delete the call instruction that we collected in a vector. Even if we were to use WeakVH, it'll drop the TBAA and we'll hit the assert on the upgrade path. r263673 gave a shot to make sure the TBAA upgrade happens before intrinsics upgrade, but failed to account for all cases. Instead of collecting instructions in a vector, this patch makes it just upgrade the TBAA on the fly, because metadata are always already loaded at this point. Differential Revision: https://reviews.llvm.org/D24533 llvm-svn: 281549
* DebugInfo: New metadata representation for global variables.Peter Collingbourne2016-09-132-9/+30
| | | | | | | | | | | | | This patch reverses the edge from DIGlobalVariable to GlobalVariable. This will allow us to more easily preserve debug info metadata when manipulating global variables. Fixes PR30362. A program for upgrading test cases is attached to that bug. Differential Revision: http://reviews.llvm.org/D20147 llvm-svn: 281284
* Formatting with clang-format patch r280700Leny Kholodov2016-09-061-22/+21
| | | | llvm-svn: 280716
* DebugInfo: use strongly typed enum for debug info flagsLeny Kholodov2016-09-061-5/+10
| | | | | | | | | | | | Use ADT/BitmaskEnum for DINode::DIFlags for the following purposes: Get rid of unsigned int for flags to avoid problems on platforms with sizeof(int) < 4 Flags are now strongly typed Patch by: Victor Leschuk <vleschuk@gmail.com> Differential Revision: https://reviews.llvm.org/D23766 llvm-svn: 280700
* Revert "DebugInfo: use strongly typed enum for debug info flags"Mehdi Amini2016-09-061-27/+23
| | | | | | This reverts commit r280686, bots are broken. llvm-svn: 280688
* DebugInfo: use strongly typed enum for debug info flagsMehdi Amini2016-09-061-23/+27
| | | | | | | | | | | | Use ADT/BitmaskEnum for DINode::DIFlags for the following purposes: * Get rid of unsigned int for flags to avoid problems on platforms with sizeof(int) < 4 * Flags are now strongly typed Patch by: Victor Leschuk <vleschuk@gmail.com> Differential Revision: https://reviews.llvm.org/D23766 llvm-svn: 280686
* Fix some Clang-tidy modernize-use-using and Include What You Use warnings; ↵Eugene Zelenko2016-08-251-33/+104
| | | | | | | | other minor fixes. Differential revision: https://reviews.llvm.org/D23861 llvm-svn: 279695
* DebugInfo: Add flag to CU to disable emission of inline debug info into the ↵David Blaikie2016-08-242-2/+4
| | | | | | | | | | skeleton CU In cases where .dwo/.dwp files are guaranteed to be available, skipping the extra online (in the .o file) inline info can save a substantial amount of space - see the original r221306 for more details there. llvm-svn: 279650
* Constify some path in the bitcode writer (NFC)Mehdi Amini2016-08-191-6/+6
| | | | llvm-svn: 279211
* [LLVM] Fix some Clang-tidy modernize-use-using and Include What You Use warningsEugene Zelenko2016-08-181-5/+4
| | | | | | Differential revision: https://reviews.llvm.org/D23675 llvm-svn: 279102
* Replace "fallthrough" comments with LLVM_FALLTHROUGHJustin Bogner2016-08-171-2/+2
| | | | | | | This is a mechanical change of comments in switches like fallthrough, fall-through, or fall-thru to use the LLVM_FALLTHROUGH macro instead. llvm-svn: 278902
* Fix bitcode auto-upgrade when using bitcode lazy loadingMehdi Amini2016-08-141-1/+3
| | | | | | | | | | | | The auto-upgrade path could be called before the VST (global names) was fully parsed, and thus intrinsic names were not available and the autoupgrade logic could not operate. Fix link failures with ThinLTO. This is a recommit of r278610 with a different fix. llvm-svn: 278615
* Revert "Fix bitcode auto-upgrade when using bitcode lazy loading"Mehdi Amini2016-08-131-9/+9
| | | | | | This reverts commit r278610. Tests are broken llvm-svn: 278613
* Fix bitcode auto-upgrade when using bitcode lazy loadingMehdi Amini2016-08-131-9/+9
| | | | | | | | | | The auto-upgrade path could be called before the VST (global names) was fully parsed, and thus intrinsic names were not available and the autoupgrade logic could not operate. Fix link failures with ThinLTO. llvm-svn: 278610
* [PM] Port ModuleSummaryIndex analysis to new pass managerTeresa Johnson2016-08-121-6/+5
| | | | | | | | | | | | | | | | | | | Summary: Port the ModuleSummaryAnalysisWrapperPass to the new pass manager. Use it in the ported BitcodeWriterPass (similar to how we use the legacy ModuleSummaryAnalysisWrapperPass in the legacy WriteBitcodePass). Also, pass the -module-summary opt flag through to the new pass manager pipeline and through to the bitcode writer pass, and add a test that uses it. Reviewers: mehdi_amini Subscribers: llvm-commits, mehdi_amini Differential Revision: https://reviews.llvm.org/D23439 llvm-svn: 278508
* Use the range variant of transform instead of unpacking begin/endDavid Majnemer2016-08-121-1/+1
| | | | | | No functionality change is intended. llvm-svn: 278476
* Don't import variadic functionsPiotr Padlewski2016-08-112-4/+5
| | | | | | | | | | | | | | | | | | | | Summary: This patch adds IsVariadicFunction bit to summary in order to not import variadic functions. Inliner doesn't inline variadic functions because it is hard to reason about it. This one small fix improves Importer by about 16% (going from 86% to 100% of imported functions that are inlined anywhere) on some spec benchmarks like 'int' and others. Reviewers: eraman, mehdi_amini, tejohnson Subscribers: mehdi_amini, llvm-commits Differential Revision: https://reviews.llvm.org/D23339 llvm-svn: 278432
* [ThinLTO] Address review comments from PGO indirect call promotion (NFC)Teresa Johnson2016-07-181-13/+17
| | | | | | Address a couple of post-commit review comments from r275707. llvm-svn: 275867
* [ThinLTO] Perform profile-guided indirect call promotionTeresa Johnson2016-07-171-4/+65
| | | | | | | | | | | | | | | | | | | | | | | | | | Summary: To enable profile-guided indirect call promotion in ThinLTO mode, we simply add call graph edges for each profitable target from the profile to the summaries, then the summary-guided importing will consider the callee for importing as usual. Also we need to enable the indirect call promotion pass creation in the PassManagerBuilder when PerformThinLTO=true (we are in the ThinLTO backend), so that the newly imported functions are considered for promotion in the backends. The IC promotion profiles refer to callees by GUID, which required adding GUIDs to the per-module VST in bitcode (and assigning them valueIds similar to how they are assigned valueIds in the combined index). Reviewers: mehdi_amini, xur Subscribers: mehdi_amini, davidxl, llvm-commits Differential Revision: http://reviews.llvm.org/D21932 llvm-svn: 275707
* Add a libLTO API to query a memory buffer and check if it contains ObjC ↵Mehdi Amini2016-07-111-0/+90
| | | | | | | | | | | categories The linker supports a feature to force load an object from a static archive if it defines an Objective-C category. This API supports this feature by looking at every section in the module to find if a category is defined in the module. llvm-svn: 275125
* Add an assertion for the value enumerator (bitcode writer) NFCMehdi Amini2016-07-081-1/+6
| | | | | | | | I have an LTO snapshot (for which I don't have sources) that can't be read back by LLVM. It seems the writer emitted broken bitcode and this assertions aims at catching such cases. llvm-svn: 274819
* Add writeonly IR attributeNicolai Haehnle2016-07-042-0/+4
| | | | | | | | | | | | | | | | | Summary: This complements the earlier addition of IntrWriteMem and IntrWriteArgMem LLVM intrinsic properties, see D18291. Also start using the attribute for memset, memcpy, and memmove intrinsics, and remove their special-casing in BasicAliasAnalysis. Reviewers: reames, joker.eph Subscribers: joker.eph, llvm-commits Differential Revision: http://reviews.llvm.org/D18714 llvm-svn: 274485
* [codeview] Add DISubprogram::ThisAdjustmentReid Kleckner2016-07-012-11/+27
| | | | | | | | | | | | | | | | | | | | | Summary: This represents the adjustment applied to the implicit 'this' parameter in the prologue of a virtual method in the MS C++ ABI. The adjustment is always zero unless multiple inheritance is involved. This increases the size of DISubprogram by 8 bytes, unfortunately. The adjustment really is a signed 32-bit integer. If this size increase is too much, we could probably win it back by splitting out a subclass with info specific to virtual methods (virtuality, vindex, thisadjustment, containingType). Reviewers: aprantl, dexonsmith Subscribers: aaboud, amccarth, llvm-commits Differential Revision: http://reviews.llvm.org/D21614 llvm-svn: 274325
* Remangle intrinsics names when types are renamedArtur Pilipenko2016-06-241-2/+23
| | | | | | | | | | | | | This is a resubmittion of previously reverted rL273568. This is a fix for the problem mentioned in "LTO and intrinsics mangling" llvm-dev mail thread: http://lists.llvm.org/pipermail/llvm-dev/2016-April/098387.html Reviewers: mehdi_amini, reames Differential Revision: http://reviews.llvm.org/D19373 llvm-svn: 273686
* BitcodeWriter: Remove redundant (and incorrect) check for whether to emit ↵Peter Collingbourne2016-06-241-3/+0
| | | | | | | | | | | | | | | module summary. The function name Module::empty() is slightly misleading in that it only tests for the presence of functions in the module. However we still want to emit the module summary if the module contains only global variables or aliases. The presence of such entities can be determined simply by checking the summary directly, as we are doing below. Differential Revision: http://reviews.llvm.org/D21669 llvm-svn: 273638
* Revert r273568 "Remangle intrinsics names when types are renamed"Hans Wennborg2016-06-231-23/+2
| | | | | | It broke 2008-07-15-Bswap.ll and 2009-09-01-PostRAProlog.ll llvm-svn: 273574
* Remangle intrinsics names when types are renamedArtur Pilipenko2016-06-231-2/+23
| | | | | | | | | | | This is a fix for the problem mentioned in "LTO and intrinsics mangling" llvm-dev mail thread: http://lists.llvm.org/pipermail/llvm-dev/2016-April/098387.html Reviewers: mehdi_amini, reames Differential Revision: http://reviews.llvm.org/D19373 llvm-svn: 273568
* Delete more dead code.Rafael Espindola2016-06-221-34/+0
| | | | | | Found by gcc 6. llvm-svn: 273402
* IR: Allow metadata attachments on declarations, and fix lazy loaded metadata ↵Peter Collingbourne2016-06-214-33/+43
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | issue with globals. This change is motivated by an upcoming change to the metadata representation used for CFI. The indirect function call checker needs type information for external function declarations in order to correctly generate jump table entries for such declarations. We currently associate such type information with declarations using a global metadata node, but I plan [1] to move all such metadata to global object attachments. In bitcode, metadata attachments for function declarations appear in the global metadata block. This seems reasonable to me because I expect metadata attachments on declarations to be uncommon. In the long term I'd also expect this to be the case for CFI, because we'd want to use some specialized bitcode format for this metadata that could be read as part of the ThinLTO thin-link phase, which would mean that it would not appear in the global metadata block. To solve the lazy loaded metadata issue I was seeing with D20147, I use the same bitcode representation for metadata attachments for global variables as I do for function declarations. Since there's a use case for metadata attachments in the global metadata block, we might as well use that representation for global variables as well, at least until we have a mechanism for lazy loading global variables. In the assembly format, the metadata attachments appear after the "declare" keyword in order to avoid a parsing ambiguity. [1] http://lists.llvm.org/pipermail/llvm-dev/2016-June/100462.html Differential Revision: http://reviews.llvm.org/D21052 llvm-svn: 273336
* Apply another batch of fixes from clang-tidy's ↵Benjamin Kramer2016-06-171-7/+8
| | | | | | | | performance-unnecessary-value-param. Contains some manual fixes. No functionality change intended. llvm-svn: 273047
* [PM] Remove support for omitting the AnalysisManager argument to newChandler Carruth2016-06-171-1/+1
| | | | | | | | | | | | | | | | | | | | pass manager passes' `run` methods. This removes a bunch of SFINAE goop from the pass manager and just requires pass authors to accept `AnalysisManager<IRUnitT> &` as a dead argument. This is a small price to pay for the simplicity of the system as a whole, despite the noise that changing it causes at this stage. This will also helpfull allow us to make the signature of the run methods much more flexible for different kinds af passes to support things like intelligently updating the pass's progression over IR units. While this touches many, many, files, the changes are really boring. Mostly made with the help of my trusty perl one liners. Thanks to Sean and Hal for bouncing ideas for this with me in IRC. llvm-svn: 272978
* IR: Introduce local_unnamed_addr attribute.Peter Collingbourne2016-06-142-10/+31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If a local_unnamed_addr attribute is attached to a global, the address is known to be insignificant within the module. It is distinct from the existing unnamed_addr attribute in that it only describes a local property of the module rather than a global property of the symbol. This attribute is intended to be used by the code generator and LTO to allow the linker to decide whether the global needs to be in the symbol table. It is possible to exclude a global from the symbol table if three things are true: - This attribute is present on every instance of the global (which means that the normal rule that the global must have a unique address can be broken without being observable by the program by performing comparisons against the global's address) - The global has linkonce_odr linkage (which means that each linkage unit must have its own copy of the global if it requires one, and the copy in each linkage unit must be the same) - It is a constant or a function (which means that the program cannot observe that the unique-address rule has been broken by writing to the global) Although this attribute could in principle be computed from the module contents, LTO clients (i.e. linkers) will normally need to be able to compute this property as part of symbol resolution, and it would be inefficient to materialize every module just to compute it. See: http://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20160509/356401.html http://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20160516/356738.html for earlier discussion. Part of the fix for PR27553. Differential Revision: http://reviews.llvm.org/D20348 llvm-svn: 272709
* BitcodeReader: Use std:::piecewise_construct when upgrading type refsDuncan P. N. Exon Smith2016-06-091-3/+3
| | | | | | | | | | | | | | r267296 used std::piecewise_construct without using std::forward_as_tuple, and r267298 hacked it out (using an emplace_back followed by a couple of reset() calls) because of a problem on a bot. I'm finally circling back to call forward_as_tuple as I should have to begin with (thanks to David Blaikie for pointing out the missing piece). Note that this code uses emplace_back() instead of push_back(make_pair()) because the move constructor for TrackingMDRef is expensive (cheaper than a copy, but still expensive). llvm-svn: 272306
* [DebugInfo] Add calling convention support for DWARF and CodeViewReid Kleckner2016-06-082-3/+5
| | | | | | | | | | | | | | | | | | | | | Summary: Now DISubroutineType has a 'cc' field which should be a DW_CC_ enum. If it is present and non-zero, the backend will emit it as a DW_AT_calling_convention attribute. On the CodeView side, we translate it to the appropriate enum for the LF_PROCEDURE record. I added a new LLVM vendor specific enum to the list of DWARF calling conventions. DWARF does not appear to attempt to standardize these, so I assume it's OK to do this until we coordinate with GCC on how to emit vectorcall convention functions. Reviewers: dexonsmith, majnemer, aaboud, amccarth Subscribers: mehdi_amini, llvm-commits Differential Revision: http://reviews.llvm.org/D21114 llvm-svn: 272197
* [BitCode] Make sure atomicrmw's argument is an actual PointerTypeFilipe Cabecinhas2016-06-051-0/+1
| | | | llvm-svn: 271851
OpenPOWER on IntegriCloud