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* Clarify that we match BSwap in InstCombine and BitReverse in CGP. NFC.Chad Rosier2016-05-254-8/+8
| | | | | | | | Also, rename recognizeBitReverseOrBSwapIdiom to recognizeBSwapOrBitReverseIdiom, so the ordering of the MatchBSwaps and MatchBitReversals arguments are consistent with the function name. llvm-svn: 270715
* [ThinLTO] Refactor ODR resolution and internalization (NFC)Teresa Johnson2016-05-253-174/+177
| | | | | | | | | Move the now index-based ODR resolution and internalization routines out of ThinLTOCodeGenerator.cpp and into either LTO.cpp (index-based analysis) or FunctionImport.cpp (index-driven optimizations). This is to enable usage by other linkers. llvm-svn: 270698
* [SCEV] No-wrap flags are not propagated when folding "{S,+,X}+T ==> {S+T,+,X}"Oleg Ranevskyy2016-05-251-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Summary: **Description** This makes `WidenIV::widenIVUse` (IndVarSimplify.cpp) fail to widen narrow IV uses in some cases. The latter affects IndVarSimplify which may not eliminate narrow IV's when there actually exists such a possibility, thereby producing ineffective code. When `WidenIV::widenIVUse` gets a NarrowUse such as `{(-2 + %inc.lcssa),+,1}<nsw><%for.body3>`, it first tries to get a wide recurrence for it via the `getWideRecurrence` call. `getWideRecurrence` returns recurrence like this: `{(sext i32 (-2 + %inc.lcssa) to i64),+,1}<nsw><%for.body3>`. Then a wide use operation is generated by `cloneIVUser`. The generated wide use is evaluated to `{(-2 + (sext i32 %inc.lcssa to i64))<nsw>,+,1}<nsw><%for.body3>`, which is different from the `getWideRecurrence` result. `cloneIVUser` sees the difference and returns nullptr. This patch also fixes the broken LLVM tests by adding missing <nsw> entries introduced by the correction. **Minimal reproducer:** ``` int foo(int a, int b, int c); int baz(); void bar() { int arr[20]; int i = 0; for (i = 0; i < 4; ++i) arr[i] = baz(); for (; i < 20; ++i) arr[i] = foo(arr[i - 4], arr[i - 3], arr[i - 2]); } ``` **Clang command line:** ``` clang++ -mllvm -debug -S -emit-llvm -O3 --target=aarch64-linux-elf test.cpp -o test.ir ``` **Expected result:** The ` -mllvm -debug` log shows that all the IV's for the second `for` loop have been eliminated. Reviewers: sanjoy Subscribers: atrick, asl, aemerson, mzolotukhin, llvm-commits Differential Revision: http://reviews.llvm.org/D20058 llvm-svn: 270695
* [AArch64] Adding a TargetParser for AArch64Renato Golin2016-05-251-0/+219
| | | | | | | | | | There's already a ARMTargetParser,now adding a similar one for aarch64. so we can use it to do ARCH/CPU/FPU parsing in clang and llvm, instead of string comparison. Patch by Jojo Ma. llvm-svn: 270687
* [X86][SSE] Replace (V)CVTDQ2PD(Y) and (V)CVTPS2PD(Y) lossless conversion ↵Simon Pilgrim2016-05-253-31/+42
| | | | | | | | | | intrinsics with generic IR Followup to D20528 clang patch, this removes the (V)CVTDQ2PD(Y) and (V)CVTPS2PD(Y) llvm intrinsics and auto-upgrades to sitofp/fpext instead. Differential Revision: http://reviews.llvm.org/D20568 llvm-svn: 270678
* [X86] Remove the llvm.x86.sse2.storel.dq intrinsic. It hasn't been used in a ↵Craig Topper2016-05-253-9/+20
| | | | | | long time. llvm-svn: 270677
* [Support] Reapply cleanup r270643Gerolf Hoflehner2016-05-251-39/+0
| | | | llvm-svn: 270674
* [FunctionAttrs] Volatile loads should disable readonlyDavid Majnemer2016-05-251-0/+5
| | | | | | | | A volatile load has side effects beyond what callers expect readonly to signify. For example, it is not safe to reorder two function calls which each perform a volatile load to the same memory location. llvm-svn: 270671
* [Support] revert previous commit r270643Gerolf Hoflehner2016-05-251-0/+39
| | | | llvm-svn: 270670
* [llvm-pdbdump] Decipher the remaining PDB streams.Zachary Turner2016-05-251-0/+12
| | | | | | | We know at least know the meaning of every stream of the PDB file. Yay! llvm-svn: 270669
* [llvm-pdbdump] Dump the IPI stream and all records.Zachary Turner2016-05-252-3/+12
| | | | llvm-svn: 270661
* pdbdump: fix bug in name hash table.Rui Ueyama2016-05-251-3/+1
| | | | | | | | | | | name_ids() did not return all IDs but only the first NameCount items. The number of non-zero entries in IDs vector is NameCount, but it does not mean that all non-zero entries are at the beginning of IDs vector. Differential Revision: http://reviews.llvm.org/D20611 llvm-svn: 270656
* [llvm-pdbdump] Stream 0 isn't actually the MSF superblock.Zachary Turner2016-05-251-0/+1
| | | | | | | Oddly enough, I realized we don't actually know what stream 0 is (if anything). llvm-svn: 270655
* [llvm-pdbdump] Dump stream summary list.Zachary Turner2016-05-253-0/+18
| | | | | | | | | Try to figure out what each stream is, and dump its name. This gives us a better picture of what streams we still don't understand. llvm-svn: 270653
* [PM] Port BDCE to the new pass manager.Davide Italiano2016-05-254-35/+43
| | | | llvm-svn: 270647
* Soften assertion in AMDGPU emitPrologue.Nirav Dave2016-05-251-2/+3
| | | | | | | | | | | | | | [AMDGPU] emitPrologue looks for an unused unallocated SGPR that is not the scratch descriptor. Continue search if unused register found fails other requirements. Reviewers: arsenm, tstellarAMD, nhaehnle Subscribers: arsenm, llvm-commits, kzhuravl Differential Revision: http://reviews.llvm.org/D20526 llvm-svn: 270646
* ScheduleDAGInstrs: Fix memory corruptionMatthias Braun2016-05-251-2/+2
| | | | | | | | We have to modify V2SU before inserting new elements into the CurrentVRegDefs set because that may move V2SU in memory invalidating the reference. llvm-svn: 270644
* [Support] Cleanup of an ancient Darwin work-around in Signals.inc (PR26174)Gerolf Hoflehner2016-05-251-39/+0
| | | | | | Patch by Jeremy Huddleston Sequoia llvm-svn: 270643
* [esan|wset] EfficiencySanitizer working set tool fastpathDerek Bruening2016-05-251-0/+104
| | | | | | | | | | | | | | | | | Summary: Adds fastpath instrumentation for esan's working set tool. The instrumentation for an intra-cache-line load or store consists of an inlined write to shadow memory bits for the corresponding cache line. Adds a basic test for this instrumentation. Reviewers: aizatsky Subscribers: vitalybuka, zhaoqin, kcc, eugenis, llvm-commits Differential Revision: http://reviews.llvm.org/D20483 llvm-svn: 270640
* [libFuzzer] print stats if we crash on empty inputKostya Serebryany2016-05-254-3/+27
| | | | llvm-svn: 270639
* Revert r270569 (teach llvm-mc to generate compressed debug sections in zlibRichard Smith2016-05-252-21/+39
| | | | | | style). It appears that current ELF linkers are not ready for this. llvm-svn: 270638
* [codeview] Add support for new types and symbols.Zachary Turner2016-05-252-0/+19
| | | | | | | | | | | | This patch adds support for: S_EXPORT LF_BITFIELD With this patch, I have run through a couple of gigabytes of PDB files and cannot find a type or symbol that we do not understand. llvm-svn: 270637
* [codeview] Add support for S_EXPORT symbol.Zachary Turner2016-05-251-0/+16
| | | | llvm-svn: 270636
* [WebAssembly] Put __stack_pointer in the offset field of loads and stores.Dan Gohman2016-05-241-10/+10
| | | | | | | | | | | | | | | | | | | | Instead of this: i32.const $push10=, __stack_pointer i32.load $push11=, 0($pop10) Emit this: i32.const $push10=, 0 i32.load $push11=, __stack_pointer($pop10) It's not currently clear which is better, though there's a chance the second form may be better at overall compression. We can revisit this when we have more data; for now it makes sense to make PEI consistent with isel. Differential Revision: http://reviews.llvm.org/D20411 llvm-svn: 270635
* [libfuzzer] Trying random unit prefixes during corpus load.Mike Aizatsky2016-05-245-1/+72
| | | | | | Differential Revision: http://reviews.llvm.org/D20301 llvm-svn: 270632
* Re-enable "[LoopUnroll] Enable advanced unrolling analysis by default" one ↵Michael Zolotukhin2016-05-241-3/+3
| | | | | | | | more time. This reverts commit r270577. llvm-svn: 270630
* [LoopUnrollAnalyzer] Fix a crash in UnrolledInstAnalyzer::visitCastInst.Michael Zolotukhin2016-05-241-5/+1
| | | | | | This fixes PR27847. Now for real. llvm-svn: 270629
* [codeview] Add support for new type records.Zachary Turner2016-05-243-64/+246
| | | | | | | | | | | | | | | | | | | This adds support for parsing and dumping the following symbol types: S_LPROCREF S_ENVBLOCK S_COMPILE2 S_REGISTER S_COFFGROUP S_SECTION S_THUNK32 S_TRAMPOLINE As of this patch, the test PDB files no longer have any unknown symbol types. llvm-svn: 270628
* [esan] Add calls from the ctor/dtor to the runtime libraryDerek Bruening2016-05-241-5/+42
| | | | | | | | | | | | | | | | | | | | | Summary: Adds createEsanInitToolGV for creating a tool-specific variable passed to the runtime library. Adds dtor "esan.module_dtor" and inserts calls from the dtor to "__esan_exit" in the runtime library. Updates the EfficiencySanitizer test. Patch by Qin Zhao. Reviewers: aizatsky Subscribers: bruening, kcc, vitalybuka, eugenis, llvm-commits Differential Revision: http://reviews.llvm.org/D20488 llvm-svn: 270627
* [MBP] Factor out the optimizations on branch conditions and unanalyzable ↵Haicheng Wu2016-05-241-44/+49
| | | | | | | | | | | | | | | | | | | | | branches. NFCI. The benefits of this patch are -- We call AnalyzeBranch() to optimize unanalyzable branches, but the result of AnalyzeBranch() is not used. Now the result is useful. -- Before the layout of all the MBBs is set, the result of AnalyzeBranch() is not correct and needs to be fixed before using it to optimize the branch conditions. Now this optimization is called after the layout, the code used to fix the result of AnalyzeBranch() is not needed. -- The branch condition of the last block is not optimized before. Now it is optimized. Differential Revision: http://reviews.llvm.org/D20177 llvm-svn: 270623
* There's no reason to use _ to name variables different just for construction.Eric Christopher2016-05-241-3/+3
| | | | llvm-svn: 270622
* LiveIntervalAnalysis: Fix handleMove() re-using the wrong value numberMatthias Braun2016-05-241-7/+3
| | | | | | This fixes http://llvm.org/PR27856 llvm-svn: 270619
* DWARF: Omit DW_AT_APPLE attributes (except ObjC ones) when not targeting LLDBDavid Blaikie2016-05-244-13/+25
| | | | | | | | | | | | | | | These attributes aren't used by other debuggers (& may be confused with other DWARF extensions) so they just waste space (about 1.5% on .dwo file size on a random large program I tested). We could remove the ObjC property ones too, but I figured they were probably more necessary when trying to understand ObjC (I could be wrong though) & so any debugger interested in working with ObjC would use them, perhaps? (also, there are some legacy tests in Clang that test for them - making it one of those annoying cross-project commits and/or cleanup to refactor those tests) llvm-svn: 270613
* [GuardWidening] Tighten the interface of the RangeCheck struct; NFCSanjoy Das2016-05-241-32/+37
| | | | | | Make `GuardWideningImpl::RangeCheck` into a class and add accessors. llvm-svn: 270611
* [llvm-pdbdump] Rework command line options.Zachary Turner2016-05-242-3/+29
| | | | | | | | | When dumping huge PDB files, too many of the options were grouped together so you would get neverending spew of output. This patch introduces more granular display options so you can only dump the fields you actually care about. llvm-svn: 270607
* Add libxar to LLVM_SYSTEM_LIBS if availableChris Bieneman2016-05-241-0/+3
| | | | | | This should fix PR27855. We have some terrible hacks in the CMake to add linking SYSTEM_LIBS to all tools. I think we need a better way to do this in the future. llvm-svn: 270605
* Add FIXMEs to all derived classes of std::error_category.Peter Collingbourne2016-05-2411-0/+33
| | | | | | | | This helps make clear that we're moving away from std::error_code. Differential Revision: http://reviews.llvm.org/D20592 llvm-svn: 270604
* [ThinLTO] Handle empty exports list for module.Teresa Johnson2016-05-241-6/+9
| | | | | | | We might have an empty exports list for a module and shouldn't assert when checking if a symbol is exported. llvm-svn: 270600
* [libFuzzer] add a license header to afl/afl_driver.cppKostya Serebryany2016-05-241-0/+8
| | | | llvm-svn: 270598
* [codeview, pdb] Dump symbol records in publics streamZachary Turner2016-05-243-61/+39
| | | | | | | Differential Revision: http://reviews.llvm.org/D20580 Reviewed By: ruiu llvm-svn: 270597
* [profile] Fix runtime hook linkage bug for COFFXinliang David Li2016-05-241-0/+2
| | | | | | | | | Patch by: Johan Engelen the user hook has linkonceODR linkage and it needs to be in comdatAny group. llvm-svn: 270596
* [ThinLTO] Fix bot failures by avoiding threaded map modificationsTeresa Johnson2016-05-241-3/+5
| | | | | | | | Ensure multiple threads won't have to modify map, probable cause of bot failures from r270584 such as: http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux-fast/builds/13095 llvm-svn: 270595
* [AMDGPU][NFC] Rename ReserveTrapVGPRs -> ReserveRegsKonstantin Zhuravlyov2016-05-247-23/+25
| | | | | | Differential Revision: http://reviews.llvm.org/D20081 llvm-svn: 270594
* Fix build errorsZachary Turner2016-05-241-2/+2
| | | | llvm-svn: 270587
* Dump symbol record details in llvm-pdbdumpZachary Turner2016-05-242-8/+15
| | | | | | | | | | | | | This makes use of the newly introduced `CVSymbolVisitor` to dump details of each type of symbol record in the symbol streams. Future patches will bring this visitor based dumping to the publics stream, as well as creating a `SymbolDumpDelegate` to print more information about relocations etc. Differential Revision: http://reviews.llvm.org/D20545 Reviewed By: ruiu llvm-svn: 270585
* [ThinLTO] Change ODR resolution and internalization to be index-basedTeresa Johnson2016-05-241-194/+272
| | | | | | | | | | | | | | | | | | | | | | | | | Summary: This patch changes the ODR resolution and internalization to be based on updates to the Index, which are consumed by the backend portion of the transformations. It will be followed by an NFC change to move these out of libLTO's ThinLTOCodeGenerator so that it can be used by other linkers (gold and lld) and by ThinLTO distributed backends. The global summary-based portions use callbacks so that the client can determine the prevailing copy and other information in a client-specific way. Eventually, with the API being developed in D20268, these may be modified to use information such as symbol resolutions, supplied by the clients to the API. Reviewers: joker-eph Subscribers: joker.eph, pcc, llvm-commits Differential Revision: http://reviews.llvm.org/D20290 llvm-svn: 270584
* [IRCE] Return a Value*, not SCEV* from parseRangeCheck; NFCSanjoy Das2016-05-241-26/+10
| | | | | | | This is better layering, since the caller needs to check if the index was an add-rec anyway. llvm-svn: 270582
* fix typos; NFCSanjay Patel2016-05-241-11/+11
| | | | llvm-svn: 270579
* Revert r270518, which re-enabled "[LoopUnroll] Enable advanced unrolling ↵Hans Wennborg2016-05-241-3/+3
| | | | | | | | analysis by default. Chromium builds are still hitting the assert in PR27874. llvm-svn: 270577
* Recommit r270070 ([llvm-mc] - Teach llvm-mc to generate compressed debug ↵George Rimar2016-05-242-39/+21
| | | | | | | | | | | | | | | | | | | sections in zlib style.) Now, after landing r270560, r270557, r270320 it is a proper time. Original commit message: [llvm-mc] - Teach llvm-mc to generate compressed debug sections in zlib style. Before this patch llvm-mc generated zlib-gnu styled sections. That means no SHF_COMPRESSED flag was set, magic 'zlib' signature was used in combination with full size field. Sections were renamed to "*.z*". This patch reimplements the compression style to zlib one as zlib-gnu looks to be depricated everywhere. Differential revision: http://reviews.llvm.org/D20331 llvm-svn: 270569
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