summaryrefslogtreecommitdiffstats
path: root/clang/lib/CodeGen/BackendUtil.cpp
Commit message (Collapse)AuthorAgeFilesLines
* Move CodeGenOptions from Frontend to BasicRichard Trieu2018-12-111-1/+1
| | | | | | Basic uses CodeGenOptions and should not depend on Frontend. llvm-svn: 348827
* Misc typos fixes in ./lib folderRaphael Isemann2018-12-101-1/+1
| | | | | | | | | | | | | | Summary: Found via `codespell -q 3 -I ../clang-whitelist.txt -L uint,importd,crasher,gonna,cant,ue,ons,orign,ned` Reviewers: teemperor Reviewed By: teemperor Subscribers: teemperor, jholewinski, jvesely, nhaehnle, whisperity, jfb, cfe-commits Differential Revision: https://reviews.llvm.org/D55475 llvm-svn: 348755
* [asan] Add clang flag -fsanitize-address-use-odr-indicatorVitaly Buka2018-12-051-2/+4
| | | | | | | | | | Reviewers: eugenis, m.ostapenko, ygribov Subscribers: hiraditya, llvm-commits Differential Revision: https://reviews.llvm.org/D55157 llvm-svn: 348327
* [ThinLTO] Allow importing of multiple symbols with same GUIDTeresa Johnson2018-11-291-9/+8
| | | | | | | | | | | | | | | | | | | Summary: The is the clang side of the fix in D55047, to handle the case where two different modules have local variables with the same GUID because they had the same source file name at compilation time. Allow multiple symbols with the same GUID to be imported, and test that this case works with the distributed backend path. Depends on D55047. Reviewers: evgeny777 Subscribers: mehdi_amini, inglorion, eraman, steven_wu, dexonsmith, cfe-commits Differential Revision: https://reviews.llvm.org/D55048 llvm-svn: 347887
* [Clang] Add options -fprofile-filter-files and -fprofile-exclude-files to ↵Calixte Denizet2018-11-171-0/+2
| | | | | | | | | | | | | | | | | | filter the files to instrument with gcov (after revert https://reviews.llvm.org/rL346659) Summary: the previous patch (https://reviews.llvm.org/rC346642) has been reverted because of test failure under windows. So this patch fix the test cfe/trunk/test/CodeGen/code-coverage-filter.c. Reviewers: marco-c Reviewed By: marco-c Subscribers: cfe-commits, sylvestre.ledru Differential Revision: https://reviews.llvm.org/D54600 llvm-svn: 347144
* Sink BuryPointer from Clang into LLVM for reuse thereDavid Blaikie2018-11-171-0/+1
| | | | llvm-svn: 347141
* [Clang] - Add '-gsplit-dwarf[=split,=single]' version for '-gsplit-dwarf' ↵George Rimar2018-11-141-2/+3
| | | | | | | | | | | | | | | | | | | | option. The DWARF5 specification says(Appendix F.1): "The sections that do not require relocation, however, can be written to the relocatable object (.o) file but ignored by the linker or they can be written to a separate DWARF object (.dwo) file that need not be accessed by the linker." The first part describes a single file split DWARF feature and there is no way to trigger this behavior atm. Fortunately, no many changes are required to keep *.dwo sections in a .o, the patch does that. Differential revision: https://reviews.llvm.org/D52296 llvm-svn: 346837
* Revert rL346644, rL346642: the added test ↵Calixte Denizet2018-11-121-2/+0
| | | | | | test/CodeGen/code-coverage-filter.c is failing under windows llvm-svn: 346659
* [Clang] Add options -fprofile-filter-files and -fprofile-exclude-files to ↵Calixte Denizet2018-11-121-0/+2
| | | | | | | | | | | | | | | | | | | | | | filter the files to instrument with gcov Summary: These options are taking regex separated by colons to filter files. - if both are empty then all files are instrumented - if -fprofile-filter-files is empty then all the filenames matching any of the regex from exclude are not instrumented - if -fprofile-exclude-files is empty then all the filenames matching any of the regex from filter are instrumented - if both aren't empty then all the filenames which match any of the regex in filter and which don't match all the regex in filter are instrumented - this patch is a follow-up of https://reviews.llvm.org/D52033 Reviewers: marco-c, vsk Reviewed By: marco-c, vsk Subscribers: cfe-commits, sylvestre.ledru Differential Revision: https://reviews.llvm.org/D52034 llvm-svn: 346642
* Revert "[PassManager/Sanitizer] Enable usage of ported AddressSanitizer ↵Leonard Chan2018-10-261-11/+0
| | | | | | | | | | | | | passes with -fsanitize=address" This reverts commit 8d6af840396f2da2e4ed6aab669214ae25443204 and commit b78d19c287b6e4a9abc9fb0545de9a3106d38d3d which causes slower build times by initializing the AddressSanitizer on every function run. The corresponding revisions are https://reviews.llvm.org/D52814 and https://reviews.llvm.org/D52739. llvm-svn: 345433
* [PassManager/Sanitizer] Enable usage of ported AddressSanitizer passes with ↵Leonard Chan2018-10-171-0/+11
| | | | | | | | | | | | | -fsanitize=address Enable usage of `AddressSanitizer` and `AddressModuleSanitizer` ported from the legacy to the new PassManager. This patch depends on https://reviews.llvm.org/D52739. Differential Revision: https://reviews.llvm.org/D52814 llvm-svn: 344699
* Add a flag to remap manglings when reading profile data information.Richard Smith2018-10-101-5/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | This can be used to preserve profiling information across codebase changes that have widespread impact on mangled names, but across which most profiling data should still be usable. For example, when switching from libstdc++ to libc++, or from the old libstdc++ ABI to the new ABI, or even from a 32-bit to a 64-bit build. The user can provide a remapping file specifying parts of mangled names that should be treated as equivalent (eg, std::__1 should be treated as equivalent to std::__cxx11), and profile data will be treated as applying to a particular function if its name is equivalent to the name of a function in the profile data under the provided equivalences. See the documentation change for a description of how this is configured. Remapping is supported for both sample-based profiling and instruction profiling. We do not support remapping indirect branch target information, but all other profile data should be remapped appropriately. Support is only added for the new pass manager. If someone wants to also add support for this for the old pass manager, doing so should be straightforward. llvm-svn: 344199
* [MSan] add KMSAN support to Clang driverAlexander Potapenko2018-09-071-3/+21
| | | | | | | | | | | | | | | Boilerplate code for using KMSAN instrumentation in Clang. We add a new command line flag, -fsanitize=kernel-memory, with a corresponding SanitizerKind::KernelMemory, which, along with SanitizerKind::Memory, maps to the memory_sanitizer feature. KMSAN is only supported on x86_64 Linux. It's incompatible with other sanitizers, but supports code coverage instrumentation. llvm-svn: 341641
* [LTO] Fix -save-temps with LTO and unnamed globals.Eli Friedman2018-08-241-2/+4
| | | | | | | | | If all LLVM passes are disabled, we can't emit a summary because there could be unnamed globals in the IR. Differential Revision: https://reviews.llvm.org/D51198 llvm-svn: 340640
* [AArch64] Add Tiny Code Model for AArch64David Green2018-08-221-0/+1
| | | | | | | | Adds a tiny code model to Clang along side rL340397. Differential Revision: https://reviews.llvm.org/D49674 llvm-svn: 340398
* [InstrProf] Use atomic profile counter updates for TSanVedant Kumar2018-08-161-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | Thread sanitizer instrumentation fails to skip all loads and stores to profile counters. This can happen if profile counter updates are merged: %.sink = phi i64* ... %pgocount5 = load i64, i64* %.sink %27 = add i64 %pgocount5, 1 %28 = bitcast i64* %.sink to i8* call void @__tsan_write8(i8* %28) store i64 %27, i64* %.sink To suppress TSan diagnostics about racy counter updates, make the counter updates atomic when TSan is enabled. If there's general interest in this mode it can be surfaced as a clang/swift driver option. Testing: check-{llvm,clang,profile} rdar://40477803 Differential Revision: https://reviews.llvm.org/D50867 llvm-svn: 339955
* Re-land r337333, "Teach Clang to emit address-significance tables.",Peter Collingbourne2018-07-181-0/+1
| | | | | | | | | | | | | | | | | | | | | which was reverted in r337336. The problem that required a revert was fixed in r337338. Also added a missing "REQUIRES: x86-registered-target" to one of the tests. Original commit message: > Teach Clang to emit address-significance tables. > > By default, we emit an address-significance table on all ELF > targets when the integrated assembler is enabled. The emission of an > address-significance table can be controlled with the -faddrsig and > -fno-addrsig flags. > > Differential Revision: https://reviews.llvm.org/D48155 llvm-svn: 337339
* Revert r337333, "Teach Clang to emit address-significance tables."Peter Collingbourne2018-07-171-1/+0
| | | | | | | | | Causing multiple failures on sanitizer bots due to TLS symbol errors, e.g. /usr/bin/ld: __msan_origin_tls: TLS definition in /home/buildbots/ppc64be-clang-test/clang-ppc64be/stage1/lib/clang/7.0.0/lib/linux/libclang_rt.msan-powerpc64.a(msan.cc.o) section .tbss.__msan_origin_tls mismatches non-TLS reference in /tmp/lit_tmp_0a71tA/mallinfo-3ca75e.o llvm-svn: 337336
* Teach Clang to emit address-significance tables.Peter Collingbourne2018-07-171-0/+1
| | | | | | | | | | | By default, we emit an address-significance table on all ELF targets when the integrated assembler is enabled. The emission of an address-significance table can be controlled with the -faddrsig and -fno-addrsig flags. Differential Revision: https://reviews.llvm.org/D48155 llvm-svn: 337333
* Restore "[ThinLTO] Ensure we always select the same function copy to import"Teresa Johnson2018-07-161-3/+2
| | | | | | | This reverts commit r337082, restoring r337051, since the LLVM side patch has been restored. llvm-svn: 337185
* Revert "[ThinLTO] Ensure we always select the same function copy to import"Teresa Johnson2018-07-141-2/+3
| | | | | | This reverts commit r337051. llvm-svn: 337082
* [ThinLTO] Ensure we always select the same function copy to importTeresa Johnson2018-07-131-3/+2
| | | | | | | Clang change to reflect the FunctionsToImportTy type change in the llvm changes for D48670. llvm-svn: 337051
* Re-land "[LTO] Enable module summary emission by default for regular LTO"Tobias Edler von Koch2018-06-221-12/+31
| | | | | | | | | | | | Since we are now producing a summary also for regular LTO builds, we need to run the NameAnonGlobals pass in those cases as well (the summary cannot handle anonymous globals). See https://reviews.llvm.org/D34156 for details on the original change. This reverts commit 6c9ee4a4a438a8059aacc809b2dd57128fccd6b3. llvm-svn: 335385
* Revert "[LTO] Enable module summary emission by default for regular LTO"Tobias Edler von Koch2018-06-211-28/+10
| | | | | | | | | | | This is breaking a couple of buildbots. We need to run the NameAnonGlobal pass for regular LTO now as well (since we're producing a summary). I'll post a separate patch for review to make this happen and then re-commit. This reverts commit c0759b7b1f4a81ff9021b952aa38a222d5fa4dfd. llvm-svn: 335291
* [LTO] Enable module summary emission by default for regular LTOTobias Edler von Koch2018-06-211-10/+28
| | | | | | | | | | | | | | | | | | | Summary: With D33921, we gained the ability to have module summaries in regular LTO modules without triggering ThinLTO compilation. Module summaries in regular LTO allow garbage collection (dead stripping) before LTO compilation and thus open up additional optimization opportunities. This patch enables summary emission in regular LTO for all targets except ld64-based ones (which use the legacy LTO API). Reviewers: pcc, tejohnson, mehdi_amini Subscribers: inglorion, eraman, cfe-commits Differential Revision: https://reviews.llvm.org/D34156 llvm-svn: 335284
* Use SmallPtrSet instead of SmallSet in places where we iterate over the set.Craig Topper2018-06-091-1/+1
| | | | | | | | SmallSet forwards to SmallPtrSet for pointer types. SmallPtrSet supports iteration, but a normal SmallSet doesn't. So if it wasn't for the forwarding, this wouldn't work. These places were found by hiding the begin/end methods in the SmallSet forwarding. llvm-svn: 334339
* IRGen: Write .dwo files when -split-dwarf-file is used together with ↵Peter Collingbourne2018-05-311-0/+1
| | | | | | | | -fthinlto-index. Differential Revision: https://reviews.llvm.org/D47597 llvm-svn: 333677
* Reland r332885, "CodeGen, Driver: Start using direct split dwarf emission in ↵Peter Collingbourne2018-05-221-26/+49
| | | | | | | | | clang." As well as two follow-on commits r332906, r332911 with a fix for test clang/test/CodeGen/split-debug-filename.c. llvm-svn: 333013
* Revert "CodeGen, Driver: Start using direct split dwarf emission in clang."Amara Emerson2018-05-221-48/+26
| | | | | | This reverts commit r332885 as it broke several greendragon buildbots. llvm-svn: 332973
* Revert "Fix another make_unique ambiguity."Amara Emerson2018-05-221-2/+1
| | | | | | This reverts commit r332906 as a dependency to revert r332885. llvm-svn: 332972
* Fix another make_unique ambiguity.Peter Collingbourne2018-05-211-1/+2
| | | | llvm-svn: 332906
* CodeGen, Driver: Start using direct split dwarf emission in clang.Peter Collingbourne2018-05-211-26/+48
| | | | | | | | Fixes PR37466. Differential Revision: https://reviews.llvm.org/D47093 llvm-svn: 332885
* CodeGen: Add a dwo output file argument to addPassesToEmitFile and hook it ↵Peter Collingbourne2018-05-211-1/+1
| | | | | | | | | | up to dwo output. Part of PR37466. Differential Revision: https://reviews.llvm.org/D47089 llvm-svn: 332881
* [ThinLTO] Support opt remarks options with distributed ThinLTO backendsTeresa Johnson2018-05-051-1/+3
| | | | | | | | | | | | | | | | | Summary: Passes down the necessary code ge options to the LTO Config to enable -fdiagnostics-show-hotness and -fsave-optimization-record in the ThinLTO backend for a distributed build. Also, remove warning about not having PGO when the input is IR. Reviewers: pcc Subscribers: mehdi_amini, inglorion, eraman, cfe-commits Differential Revision: https://reviews.llvm.org/D46464 llvm-svn: 331592
* Fix build break due to content moving from Scalar.h to InstCombine.h in LLVMDavid Blaikie2018-04-241-0/+1
| | | | llvm-svn: 330671
* Use special new Clang flag 'FrontendTimesIsEnabled' instead of ↵Andrew V. Tischenko2018-04-231-2/+2
| | | | | | | | 'llvm::TimePassesIsEnabled' inside -ftime-report feature. Differential Revision: https://reviews.llvm.org/D45619 llvm-svn: 330571
* [ThinLTO] Pass -save-temps to LTO backend for distributed ThinLTO buildsTeresa Johnson2018-04-171-0/+9
| | | | | | | | | | | | | | | | | | | | | | | Summary: The clang driver option -save-temps was not passed to the LTO config, so when invoking the ThinLTO backends via clang during distributed builds there was no way to get LTO to save temp files. Getting this to work with ThinLTO distributed builds also required changing the driver to avoid a separate compile step to emit unoptimized bitcode when the input was already bitcode under -save-temps. Not only is this unnecessary in general, it is problematic for ThinLTO backends since the temporary bitcode file to the backend would not match the module path in the combined index, leading to incorrect ThinLTO backend index-based optimizations. Reviewers: pcc Subscribers: mehdi_amini, inglorion, eraman, cfe-commits Differential Revision: https://reviews.llvm.org/D45217 llvm-svn: 330194
* hwasan: add -fsanitize=kernel-hwaddress flagAndrey Konovalov2018-04-131-5/+17
| | | | | | | | | This patch adds -fsanitize=kernel-hwaddress flag, that essentially enables -hwasan-kernel=1 -hwasan-recover=1 -hwasan-match-all-tag=0xff. Differential Revision: https://reviews.llvm.org/D45046 llvm-svn: 330044
* Remove -cc1 option "-backend-option".Eli Friedman2018-04-121-2/+0
| | | | | | | | | It means the same thing as -mllvm; there isn't any reason to have two options which do the same thing. Differential Revision: https://reviews.llvm.org/D45109 llvm-svn: 329965
* Fix typos in clangAlexander Kornienko2018-04-061-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Found via codespell -q 3 -I ../clang-whitelist.txt Where whitelist consists of: archtype cas classs checkk compres definit frome iff inteval ith lod methode nd optin ot pres statics te thru Patch by luzpaz! (This is a subset of D44188 that applies cleanly with a few files that have dubious fixes reverted.) Differential revision: https://reviews.llvm.org/D44188 llvm-svn: 329399
* [Coroutines] Schedule coro-split before asanBrian Gesiak2018-04-011-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Summary: The docs for the LLVM coroutines intrinsic `@llvm.coro.id` state that "The second argument, if not null, designates a particular alloca instruction to be a coroutine promise." However, if the address sanitizer pass is run before the `@llvm.coro.id` intrinsic is lowered, the `alloca` instruction passed to the intrinsic as its second argument is converted, as per the https://github.com/google/sanitizers/wiki/AddressSanitizerAlgorithm docs, to an `inttoptr` instruction that accesses the address of the promise. On optimization levels `-O1` and above, the `-asan` pass is run after `-coro-early`, `-coro-split`, and `-coro-elide`, and before `-coro-cleanup`, and so there is no issue. At `-O0`, however, `-asan` is run in between `-coro-early` and `-coro-split`, which causes an assertion to be hit when the `inttoptr` instruction is forcibly cast to an `alloca`. Rearrange the passes such that the coroutine passes are registered before the sanitizer passes. Test Plan: Compile a simple C++ program that uses coroutines in `-O0` with `-fsanitize-address`, and confirm no assertion is hit: `clang++ coro-example.cpp -fcoroutines-ts -g -fsanitize=address -fno-omit-frame-pointer`. Reviewers: GorNishanov, lewissbaker, EricWF Reviewed By: GorNishanov Subscribers: cfe-commits Differential Revision: https://reviews.llvm.org/D43927 llvm-svn: 328951
* Fix for LLVM header changesDavid Blaikie2018-03-281-0/+1
| | | | llvm-svn: 328718
* Change for an LLVM header file moveDavid Blaikie2018-03-231-1/+1
| | | | llvm-svn: 328380
* [Driver] Pass -f[no-]emulated-tls and set up ExplicitEmulatedTLSChih-Hung Hsieh2018-03-011-0/+1
| | | | | | | | | | Since LLVM r326341, default EmulatedTLS mode is decided in backend according to target triple. Any front-end should pass -f[no]-emulated-tls to backend and set up ExplicitEmulatedTLS only when the flags are used. Differential Revision: https://reviews.llvm.org/D43965 llvm-svn: 326499
* [ThinLTO] Allow indexing to request backend to ignore the moduleVitaly Buka2018-02-161-5/+17
| | | | | | | | | | | | | | | | | | Summary: Gold plugin does not add pass to ThinLTO modules without useful symbols. In this case ThinLTO can't create corresponding index file and some features, like CFI, cannot be processes by backed correctly without index. Given that we don't need the backed output we can request it to avoid processing the module. This is implemented by this patch using new "SkipModuleByDistributedBackend" flag. Reviewers: pcc, tejohnson Subscribers: mehdi_amini, inglorion, eraman, cfe-commits Differential Revision: https://reviews.llvm.org/D42995 llvm-svn: 325411
* [ThinLTO] Ignore object files with no ThinLTO modules if -fthinlto-index= is setVitaly Buka2018-02-161-5/+11
| | | | | | | | | | | | | | | | | Summary: ThinLTO compilation may decide not to split module and keep at as regular LTO. In this can this module already processed during indexing and already a part of merged object file. So here we can just skip it. Reviewers: pcc, tejohnson Reviewed By: tejohnson Subscribers: mehdi_amini, inglorion, eraman, cfe-commits Differential Revision: https://reviews.llvm.org/D42680 llvm-svn: 325410
* Update for llvm change. NFC.Rafael Espindola2018-02-141-2/+2
| | | | llvm-svn: 325156
* NewPM: Improve/fix GCOV - which needs to run early in the pass pipeline.David Blaikie2018-01-231-3/+7
| | | | | | | Using a new extension point in the new PM, register GCOV at the start of the pipeline rather than the end. llvm-svn: 323167
* Use an enum value instead of a string.Rafael Espindola2018-01-181-17/+2
| | | | | | | | The old StringSwitch use was also broken. It assumed that a StringSwitch returns Optional<T> instead of T and was missing a .Default. llvm-svn: 322792
* Wire up GCOV to the new pass managerDavid Blaikie2018-01-091-15/+24
| | | | | | | | | | GCOV in the old pass manager also strips debug info (if debug info is disabled/only produced for profiling anyway) after the GCOV pass runs. I think the strip pass hasn't been ported to the new pass manager, so it might take me a little while to wire that up. llvm-svn: 322126
OpenPOWER on IntegriCloud