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* Don't use PATH_MAX.Sean Silva2016-04-071-1/+1
| | | | | | | | | | This is a SmallVector anyway, and so the exact size doesn't matter. clang\lib\Frontend\ModuleDependencyCollector.cpp(83) : error C2065: 'PATH_MAX' : undeclared identifier clang\lib\Frontend\ModuleDependencyCollector.cpp(83) : error C2975: 'InternalLen' : invalid template argument for 'llvm::SmallString', expected compile-time constant expression llvm\include\llvm/ADT/SmallString.h(24) : see declaration of 'InternalLen' llvm-svn: 265634
* [CrashReproducer] Use toUppercase from include/clang/Basic/CharInfo.hBruno Cardoso Lopes2016-04-071-1/+2
| | | | | | Use toUppercase instead of ::toupper() llvm-svn: 265632
* [CrashReproducer] Change std::toupper to ::toupperBruno Cardoso Lopes2016-04-071-1/+1
| | | | | | Attempt to fix windows bots llvm-svn: 265630
* [CrashReproducer] Setup 'case-sensitive' in YAML files.Bruno Cardoso Lopes2016-04-071-4/+27
| | | | | | | | | The crash reproducer was not setting up case sensitivity in the VFS yaml files, which defaults to true. Make the crash reproducer explicitly set that flag based on the case sensitivity of the .cache path where vfs and modules are dumped. llvm-svn: 265622
* [CrashReproducer] Move ModuleDependencyCollector method around. NFCBruno Cardoso Lopes2016-04-071-18/+18
| | | | llvm-svn: 265621
* Revert "Set the default C standard to C99 when targeting the PS4."Sean Silva2016-04-061-8/+3
| | | | | | | | | | | | | | | | | This reverts r265359. It breaks - llvm-clang-lld-x86_64-scei-ps4-ubuntu-fast - llvm-clang-lld-x86_64-scei-ps4-windows10pro-fast Failing Tests (5): Clang :: FixIt/fixit-errors.c Clang :: Preprocessor/init.c Clang :: Sema/attr-deprecated.c Clang :: Sema/nullability.c Clang :: SemaObjC/objcbridge-attribute-arc.m llvm-svn: 265601
* [OPENMP] Parsing and Sema support for 'omp declare target' directiveDmitry Polukhin2016-04-061-0/+6
| | | | | | | | | | | | | | | | | | | | Add parsing, sema analysis for 'declare target' construct for OpenMP 4.0 (4.5 support will be added in separate patch). The declare target directive specifies that variables, functions (C, C++ and Fortran), and subroutines (Fortran) are mapped to a device. The declare target directive is a declarative directive. In Clang declare target is implemented as implicit attribute for the declaration. The syntax of the declare target directive is as follows: #pragma omp declare target declarations-definition-seq #pragma omp end declare target Based on patch from Michael Wong http://reviews.llvm.org/D15321 llvm-svn: 265530
* [CUDA] Add -fcuda-flush-denormals-to-zero.Justin Lebar2016-04-051-0/+3
| | | | | | | | | | | | | | | | | | Summary: Setting this flag causes all functions are annotated with the "nvvm-f32ftz" = "true" attribute. In addition, we annotate the module with "nvvm-reflect-ftz" set to 0 or 1, depending on whether -cuda-flush-denormals-to-zero is set. This is read by the NVVMReflect pass. Reviewers: tra, rnk Subscribers: cfe-commits Differential Revision: http://reviews.llvm.org/D18671 llvm-svn: 265435
* Add -fno-jump-tables and-fjump-tables flagsNirav Dave2016-04-051-0/+2
| | | | | | | | | | | | | Add no-jump-tables flag to disable use of jump tables when lowering switch statements Reviewers: echristo, hans Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D18407 llvm-svn: 265425
* Set the default C standard to C99 when targeting the PS4.Sunil Srivastava2016-04-041-3/+8
| | | | | | | | Patch by Douglas Yung! Differential Revision: http://reviews.llvm.org/D18708 llvm-svn: 265359
* [CrashReproducer] Add a module map callback for added headersBruno Cardoso Lopes2016-03-301-1/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current ModuleDependencyCollector has a AST listener to collect header files present in loaded modules, but this isn't enough to collect all headers needed in the crash reproducer. One of the reasons is that the AST writer doesn't write symbolic link header paths in the pcm modules, this makes the listeners on the reader only able to collect the real files. Since the module maps could contain submodules that use headers which are symbolic links, not collecting those forbid the reproducer scripts to regen the modules. For instance: usr/include/module.map: ... module pthread { header "pthread.h" export * module impl { header "pthread_impl.h" export * } } ... usr/include/pthread/pthread_impl.h usr/include/pthread_impl.h -> pthread/pthread_impl.h The AST dump for the module above: <SUBMODULE_HEADER abbrevid=6/> blob data = 'pthread_impl.h' <SUBMODULE_TOPHEADER abbrevid=7/> blob data = '/<path_to_sdk>/usr/include/pthread/pthread_impl.h' Note that we don't have "usr/include/pthread_impl.h" which is requested by the module.map in case we want to reconstruct the module in the reproducer. The reason the original symbolic link path isn't used is because the headers are kept by name and requested through the FileManager, which unique files and returns the real path only. To fix that, add a callback to be invoked everytime a header is added while parsing module maps and hook that up to the module dependecy collector. This callback is only registered when generating the reproducer. Differential Revision: http://reviews.llvm.org/D18585 rdar://problem/24499339 llvm-svn: 264971
* [CUDA] Make unattributed constexpr functions implicitly host+device.Justin Lebar2016-03-301-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | With this patch, by a constexpr function is implicitly host+device unless: a) it's a variadic function (variadic functions are not allowed on the device side), or b) it's preceeded by a __device__ overload in a system header. The restriction on overloading __host__ __device__ functions on the basis of their CUDA attributes remains in place, but we use (b) to allow us to define __device__ overloads for constexpr functions in cmath, which would otherwise be __host__ __device__ and thus not overloadable. You can disable this behavior with -fno-cuda-host-device-constexpr. Reviewers: tra, rnk, rsmith Subscribers: cfe-commits Differential Revision: http://reviews.llvm.org/D18380 llvm-svn: 264964
* For MS ABI, emit dllexport friend functions defined inline in classStephan Bergmann2016-03-301-2/+2
| | | | | | | | | | | | | | ...as that is apparently what MSVC does. This is an updated version of r263738, which had to be reverted in r263740 due to test failures. The original version had erroneously emitted functions that are defined in class templates, too (see the updated "Handle friend functions" code in EmitDeferredDecls, lib/CodeGen/ModuleBuilder.cpp). (The updated tests needed to be split out into their own dllexport-ms-friend.cpp because of the CHECK-NOTs which would have interfered with subsequent CHECK-DAGs in dllexport.cpp.) Differential Revision: http://reviews.llvm.org/D18430 llvm-svn: 264841
* [CrashReproducer] Cleanup and move functionality around in ↵Bruno Cardoso Lopes2016-03-292-24/+22
| | | | | | | | | | | ModuleDependencyCollector. NFC - Make ModuleDependencyCollector use the DependencyCollector interface - Move some methods from ModuleDependencyListener to ModuleDependencyCollector in order to share common functionality with other future possible callbacks. llvm-svn: 264808
* [CUDA] Remove three obsolete CUDA cc1 flags.Justin Lebar2016-03-291-9/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | Summary: * -fcuda-target-overloads Previously unconditionally set to true by the driver. Necessary for correct functioning of the compiler -- our CUDA headers wrapper won't compile without this. * -fcuda-disable-target-call-checks Previously unconditionally set to true by the driver. Necessary to compile almost any external CUDA code -- almost all libraries assume that host+device code can call host or device functions. * -fcuda-allow-host-calls-from-host-device No effect when target overloading is enabled. Reviewers: tra Subscribers: rsmith, cfe-commits Differential Revision: http://reviews.llvm.org/D18416 llvm-svn: 264739
* Delete dead variable.Richard Smith2016-03-251-3/+1
| | | | llvm-svn: 264464
* The time when -faltivec (or, on clang only, -maltivec) will magicallyEric Christopher2016-03-241-4/+0
| | | | | | | | | include altivec.h has come and gone. Rationale: This causes modules, rewrite-includes, etc to be sad and people should just include altivec.h in their source. llvm-svn: 264235
* NFC: clarify comment on lock-free macrosJF Bastien2016-03-241-1/+1
| | | | | | Used by both libstdc++ and libc++. llvm-svn: 264226
* clang-cl: With -fmsc-version=1900, use MSVS2015 diag formatting.Nico Weber2016-03-231-1/+9
| | | | | | | | | | | Remove tests that have neither a triple nor an explicit -fmsc-version flag, since in the absence of an -fmsc-version flag, the implicit value of the flag is 17 (MSVC2013) with MSVC triples but 0 (not set) for other triples, and the default triple is platform dependent. This relands r263974 with a test fix. llvm-svn: 264210
* clang-cl: Fix remaining bugs in interaction of /Yc and /FI /showIncludes.Nico Weber2016-03-232-30/+31
| | | | | | | | | | Instead of putting the /Yc header into ExtraDeps, give DependencyOutputOptions a dedicated field for /Yc mode, and let HeaderIncludesCallback hang on to the full DependencyOutputOptions object, not just ExtraDeps. Reverts parts of r263352 that are now no longer needed. llvm-svn: 264182
* clang-cl: Include /FI headers in /showIncludes output.Nico Weber2016-03-233-9/+16
| | | | | | | | | | | | | | | | | -H in gcc mode doesn't print -include headers, but they are included in depfiles written by MMD and friends. Since /showIncludes is what's used instead of depfiles, printing /FI there seems important (and matches cl.exe). Instead of giving HeaderIncludeGen more options, just switch on ShowAllHeaders in clang-cl mode and let clang::InitializePreprocessor() not put -include flags in the <command line> block. This changes the behavior of -E slightly, and it removes the <command line> flag from the output triggered by setting the obscure CC_PRINT_HEADERS=1 env var to true while running clang. Both of these seem ok to change. http://reviews.llvm.org/D18401 llvm-svn: 264174
* Revert r263974, "clang-cl: With -fmsc-version=1900, use MSVS2015 diag ↵NAKAMURA Takumi2016-03-211-9/+1
| | | | | | | | formatting." It seems the test wouldn't expect if default target is *-win32. llvm-svn: 264007
* Revert "Convert some ObjC msgSends to runtime calls."Pete Cooper2016-03-211-3/+0
| | | | | | | | | | | | | | This reverts commit r263607. This change caused more objc_retain/objc_release calls in the IR but those are then incorrectly optimized by the ARC optimizer. Work is going to have to be done to ensure the ARC optimizer doesn't optimize user written RR, but that should land before this change. This change will also need to be updated to take account for any changes required to ensure that user written calls to RR are distinct from those inserted by ARC. llvm-svn: 263984
* clang-cl: With -fmsc-version=1900, use MSVS2015 diag formatting.Nico Weber2016-03-211-1/+9
| | | | llvm-svn: 263974
* Reapply [2] [VFS] Add 'overlay-relative' field to YAML filesBruno Cardoso Lopes2016-03-202-2/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reapplies r261552 and r263748. Fixed testcase to reapply. The VFS overlay mapping between virtual paths and real paths is done through the 'external-contents' entries in YAML files, which contains hardcoded paths to the real files. When a module compilation crashes, headers are dumped into <name>.cache/vfs directory and are mapped via the <name>.cache/vfs/vfs.yaml. The script generated for reproduction uses -ivfsoverlay pointing to file to gather the mapping between virtual paths and files inside <name>.cache/vfs. Currently, we are only capable of reproducing such crashes in the same machine as they happen, because of the hardcoded paths in 'external-contents'. To be able to reproduce a crash in another machine, this patch introduces a new option in the VFS yaml file called 'overlay-relative'. When it's equal to 'true' it means that the provided path to the YAML file through the -ivfsoverlay option should also be used to prefix the final path for every 'external-contents'. Example, given the invocation snippet "... -ivfsoverlay <name>.cache/vfs/vfs.yaml" and the following entry in the yaml file: "overlay-relative": "true", "roots": [ ... "type": "directory", "name": "/usr/include", "contents": [ { "type": "file", "name": "stdio.h", "external-contents": "/usr/include/stdio.h" }, ... Here, a file manager request for virtual "/usr/include/stdio.h", that will map into real path "/<absolute_path_to>/<name>.cache/vfs/usr/include/stdio.h. This is a useful feature for debugging module crashes in machines other than the one where the error happened. Differential Revision: http://reviews.llvm.org/D17457 rdar://problem/24499339 llvm-svn: 263893
* Add -fnative-half-arguments-and-returnsPirama Arumuga Nainar2016-03-181-1/+6
| | | | | | | | | | | | | | | | | | Summary: r246764 handled __fp16 arguments and returns for AAPCS, but skipped this handling for OpenCL. Simlar to OpenCL, RenderScript also handles __fp16 type natively. This patch adds the -fnative-half-arguments-and-returns command line flag to allow such languages to skip this coercion of __fp16. Reviewers: srhines, olista01 Subscribers: cfe-commits Differential Revision: http://reviews.llvm.org/D18138 llvm-svn: 263795
* Revert "Reapply [VFS] Add 'overlay-relative' field to YAML files"Bruno Cardoso Lopes2016-03-172-6/+2
| | | | | | | | | Tests failing on http://bb.pgr.jp/builders/cmake-clang-x86_64-linux/builds/46102 This reverts commit a1683cd6c9e07359c09f86e98a4db6b4e1bc51fc. llvm-svn: 263750
* Reapply [VFS] Add 'overlay-relative' field to YAML filesBruno Cardoso Lopes2016-03-172-2/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reapplies r261552. The VFS overlay mapping between virtual paths and real paths is done through the 'external-contents' entries in YAML files, which contains hardcoded paths to the real files. When a module compilation crashes, headers are dumped into <name>.cache/vfs directory and are mapped via the <name>.cache/vfs/vfs.yaml. The script generated for reproduction uses -ivfsoverlay pointing to file to gather the mapping between virtual paths and files inside <name>.cache/vfs. Currently, we are only capable of reproducing such crashes in the same machine as they happen, because of the hardcoded paths in 'external-contents'. To be able to reproduce a crash in another machine, this patch introduces a new option in the VFS yaml file called 'overlay-relative'. When it's equal to 'true' it means that the provided path to the YAML file through the -ivfsoverlay option should also be used to prefix the final path for every 'external-contents'. Example, given the invocation snippet "... -ivfsoverlay <name>.cache/vfs/vfs.yaml" and the following entry in the yaml file: "overlay-relative": "true", "roots": [ ... "type": "directory", "name": "/usr/include", "contents": [ { "type": "file", "name": "stdio.h", "external-contents": "/usr/include/stdio.h" }, ... Here, a file manager request for virtual "/usr/include/stdio.h", that will map into real path "/<absolute_path_to>/<name>.cache/vfs/usr/include/stdio.h. This is a useful feature for debugging module crashes in machines other than the one where the error happened. Differential Revision: http://reviews.llvm.org/D17457 rdar://problem/24499339 llvm-svn: 263748
* Revert "For MS ABI, emit dllexport friend functions defined inline in class"Reid Kleckner2016-03-171-2/+2
| | | | | | | | | This reverts commit r263738. This appears to cause a failure in CXX/temp/temp.decls/temp.friend/p1.cpp llvm-svn: 263740
* For MS ABI, emit dllexport friend functions defined inline in classReid Kleckner2016-03-171-2/+2
| | | | | | | | | | | | Summary: ...as that is apparently what MSVC does Reviewers: rnk Patch by Stephan Bergmann Differential Revision: http://reviews.llvm.org/D15267 llvm-svn: 263738
* [VFS] Remove wrong header includeBruno Cardoso Lopes2016-03-171-1/+0
| | | | | | Follow up from r263686. Forgot to remove the wrong header file. llvm-svn: 263691
* Reapply [2]: [VFS] Add support for handling path traversalsBruno Cardoso Lopes2016-03-171-8/+73
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This was applied twice r261551 and 263617 and later reverted because: (1) Windows bot failing on unittests. Change the current behavior to do not handle path traversals on windows. (2) Windows bot failed to include llvm/Config/config.h in order to use HAVE_REALPATH. Use LLVM_ON_UNIX instead, as done in lib/Basic/FileManager.cpp. Handle ".", ".." and "./" with trailing slashes while collecting files to be dumped into the vfs overlay directory. Include the support for symlinks into components. Given the path: /install-dir/bin/../lib/clang/3.8.0/include/altivec.h, if "bin" component is a symlink, it's not safe to use `path::remove_dots` here, and `realpath` is used to get the right answer. Since `realpath` is expensive, we only do it at collecting time (which only happens during the crash reproducer) and cache the base directory for fast lookups. Overall, this makes the input to the VFS YAML file to be canonicalized to never contain traversal components. Differential Revision: http://reviews.llvm.org/D17104 rdar://problem/24499339 llvm-svn: 263686
* Revert r263617, "Reapply: [VFS] Add support for handling path traversals"NAKAMURA Takumi2016-03-161-73/+8
| | | | | | It broke standalone clang build. llvm-svn: 263636
* Revert r263622, "clang/lib/Frontend/ModuleDependencyCollector.cpp: Use ↵NAKAMURA Takumi2016-03-161-1/+1
| | | | | | | | clang/Config/config.h instead of llvm's." I'll commit better fix(es) later. "llvm/Config/config.h" shouldn't be available here. llvm-svn: 263623
* clang/lib/Frontend/ModuleDependencyCollector.cpp: Use clang/Config/config.h ↵NAKAMURA Takumi2016-03-161-1/+1
| | | | | | instead of llvm's. llvm-svn: 263622
* Reapply: [VFS] Add support for handling path traversalsBruno Cardoso Lopes2016-03-161-8/+73
| | | | | | | | | | | | | | | | | | | | | | | | | | This is originally r261551, reverted because of windows bots failing on unittests. Change the current behavior to do not handle path traversals on windows. Handle ".", ".." and "./" with trailing slashes while collecting files to be dumped into the vfs overlay directory. Include the support for symlinks into components. Given the path: /install-dir/bin/../lib/clang/3.8.0/include/altivec.h, if "bin" component is a symlink, it's not safe to use `path::remove_dots` here, and `realpath` is used to get the right answer. Since `realpath` is expensive, we only do it at collecting time (which only happens during the crash reproducer) and cache the base directory for fast lookups. Overall, this makes the input to the VFS YAML file to be canonicalized to never contain traversal components. Differential Revision: http://reviews.llvm.org/D17104 rdar://problem/24499339 llvm-svn: 263617
* Convert some ObjC msgSends to runtime calls.Pete Cooper2016-03-161-0/+3
| | | | | | | | | | | | | | It is faster to directly call the ObjC runtime for methods such as retain/release instead of sending a message to those functions. This patch adds support for converting messages to retain/release/alloc/autorelease to their equivalent runtime calls. Tests included for the positive case of applying this transformation, negative tests that we ensure we only convert "alloc" to objc_alloc, not "alloc2", and also a driver test to ensure we enable this only for supported runtime versions. Reviewed by John McCall. Differential Revision: http://reviews.llvm.org/D14737 llvm-svn: 263607
* Make it possible for AST plugins to enable themselves by defaultJohn Brawn2016-03-152-28/+38
| | | | | | | | | | | | Currently when an AST plugin is loaded it must then be enabled by passing -plugin pluginname or -add-plugin pluginname to the -cc1 command line. This patch adds a method to PluginASTAction which allows it to declare that the action happens before, instead of, or after the main AST action, plus the relevant changes to make the plugin action happen at that time automatically. Differential Revision: http://reviews.llvm.org/D17959 llvm-svn: 263546
* Restrict the hack from r263429 to asan and msan.Benjamin Kramer2016-03-151-2/+4
| | | | | | | The other sanitizers don't have backend passes that rely on value names. Avoid paying the compile time cost of names there. llvm-svn: 263541
* [ThinLTO] Clang side of renaming of function index (NFC)Teresa Johnson2016-03-151-1/+1
| | | | | | | | | This is the companion to an LLVM patch that renamed the function index data structures and files to use the more general module summary index. (Recommit after fixing LLVM side to add back missed file) llvm-svn: 263514
* Revert "[ThinLTO] Clang side of renaming of function index (NFC)"Teresa Johnson2016-03-141-1/+1
| | | | | | This reverts commit r263491. Missed a file on the LLVM side. llvm-svn: 263494
* [ThinLTO] Clang side of renaming of function index (NFC)Teresa Johnson2016-03-141-1/+1
| | | | | | | This is the companion to an LLVM patch that renamed the function index data structures and files to use the more general module summary index. llvm-svn: 263491
* [OpenMP] Replace offloading option that start with -o with -fo.Samuel Antao2016-03-141-2/+2
| | | | | | | | | | | | | | | Summary: The current offloading implementation is using -omptargets and -omp-host-ir-file-path options in the frontend. This causes the user a lot of trouble due to to the conflicts with the -o option. E.g. if the user misspells omptargets he will end up with a file with a weird name. This patches replaces these two options with -fomptargets and -fomp-host-ir-file-path to avoid these issues, and it is also more consistent with the other options like -fopenmp. Reviewers: hfinkel, carlo.bertolli, arpith-jacob, kkwli0, ABataev Subscribers: cfe-commits, caomhin, fraggamuffin Differential Revision: http://reviews.llvm.org/D18112 llvm-svn: 263442
* [Frontend] Disable value name discarding for all sanitizers.Benjamin Kramer2016-03-141-6/+7
| | | | | | | | ASan also relies on names on allocas and will emit unhelpful output if they're not present. Just force-enable value names for now. Should unbreak release builds of asan. llvm-svn: 263429
* Temporarily make discard value names depend on whether or not we'reEric Christopher2016-03-141-1/+6
| | | | | | | | | | trying to track origins in the memory sanitizer since the backend instrumentation pass currently takes names from the Instruction. Fixes all of the origin tracking tests in compiler-rt after the -discard-value-name option was added. llvm-svn: 263412
* Remove compile time PreserveName in favor of a runtime cc1 ↵Mehdi Amini2016-03-131-0/+1
| | | | | | | | | | | | | | | | | | | | -discard-value-names option Summary: This flag is enabled by default in the driver when NDEBUG is set. It is forwarded on the LLVMContext to discard all value names (but GlobalValue) for performance purpose. This an improved version of D18024 Reviewers: echristo, chandlerc Subscribers: cfe-commits Differential Revision: http://reviews.llvm.org/D18127 From: Mehdi Amini <mehdi.amini@apple.com> llvm-svn: 263394
* clang-cl: Add /Yc argument to /showIncludes output.Nico Weber2016-03-132-27/+32
| | | | | | | | | | To make this work, delay printing of ExtraDeps in HeaderIncludesCallback a bit, so that it happens after CompilerInstance::InitializeSourceManager() has run. General /FI arguments are still missing from /showIncludes output, this still needs to be fixed. llvm-svn: 263352
* Make TargetInfo store an actual DataLayout instead of a string.James Y Knight2016-03-041-2/+2
| | | | | | | | | | | | | | Use it to calculate UserLabelPrefix, instead of specifying it (often incorrectly). Note that the *actual* user label prefix has always come from the DataLayout, and is handled within LLVM. The main thing clang's TargetInfo::UserLabelPrefix did was to set the #define value. Having these be different from each-other is just silly. Differential Revision: http://reviews.llvm.org/D17183 llvm-svn: 262737
* [PGO] Change profile use cc1 option to handle IR level profilesRong Xu2016-03-022-26/+48
| | | | | | | | | | | | | | | | | | This patch changes cc1 option for PGO profile use from -fprofile-instr-use=<path> to -fprofile-instrument-use-path=<path>. -fprofile-instr-use=<path> is now a driver only option. In addition to decouple the cc1 option from the driver level option, this patch also enables IR level profile use. cc1 option handling now reads the profile header and sets CodeGenOpt ProfileUse (valid values are {None, Clang, LLVM} -- this is a common enum for -fprofile-instrument={}, for the profile instrumentation), and invoke the pipeline to enable the respective PGO use pass. Reviewers: silvas, davidxl Differential Revision: http://reviews.llvm.org/D17737 llvm-svn: 262515
* Serialize `#pragma detect_mismatch`.Nico Weber2016-03-021-5/+0
| | | | | | | This is like r262493, but for pragma detect_mismatch instead of pragma comment. The two pragmas have similar behavior, so use the same approach for both. llvm-svn: 262506
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