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* Merging r313675:Tom Stellard2017-11-131-0/+8
| | | | | | | | | | | | | | | | | | ------------------------------------------------------------------------ r313675 | rcraik | 2017-09-19 14:04:23 -0700 (Tue, 19 Sep 2017) | 9 lines [OpenMP] fix seg-faults printing diagnostics with invalid ordered(n) values When the value specified for n in ordered(n) is larger than the number of loops a segmentation fault can occur in one of two ways when attempting to print out a diagnostic for an associated depend(sink : vec): 1) The iteration vector vec contains less than n items 2) The iteration vector vec contains a variable that is not a loop control variable This patch addresses both of these issues. Differential Revision: https://reviews.llvm.org/D38049 ------------------------------------------------------------------------ git-svn-id: https://llvm.org/svn/llvm-project/cfe/branches/release_50@318116 91177308-0d34-0410-b5e6-96231b3b80d8
* Merging r312296:Tom Stellard2017-11-131-1/+1
| | | | | | | | | | ------------------------------------------------------------------------ r312296 | abataev | 2017-08-31 16:34:33 -0700 (Thu, 31 Aug 2017) | 1 line [OPENMP] Fix the test, NFC. ------------------------------------------------------------------------ git-svn-id: https://llvm.org/svn/llvm-project/cfe/branches/release_50@318114 91177308-0d34-0410-b5e6-96231b3b80d8
* Merging r312292:Tom Stellard2017-11-1321-20/+32
| | | | | | | | | | | | | | | | | ------------------------------------------------------------------------ r312292 | abataev | 2017-08-31 16:06:52 -0700 (Thu, 31 Aug 2017) | 8 lines [OPENMP] Fix for PR34398: assert with random access iterator if the step>1. If the loop is a loot with random access iterators and the iteration construct is represented it += n, then the compiler crashed because of reusing of the same MaterializedTemporaryExpr around N. Patch fixes it by using the expression as written, without any special kind of wrappings. ------------------------------------------------------------------------ git-svn-id: https://llvm.org/svn/llvm-project/cfe/branches/release_50@318113 91177308-0d34-0410-b5e6-96231b3b80d8
* Merging r311777:Tom Stellard2017-11-131-0/+18
| | | | | | | | | | | | | | ------------------------------------------------------------------------ r311777 | abataev | 2017-08-25 08:43:55 -0700 (Fri, 25 Aug 2017) | 5 lines [OPENMP] Fix for PR34321: ustom OpenMP reduction in C++ template causes SEGFAULT at compile time Compiler crashed when tried to rebuild non-template expression in dependent context. ------------------------------------------------------------------------ git-svn-id: https://llvm.org/svn/llvm-project/cfe/branches/release_50@318107 91177308-0d34-0410-b5e6-96231b3b80d8
* Merging r311013:Tom Stellard2017-11-131-0/+1
| | | | | | | | | | | | | | | | ------------------------------------------------------------------------ r311013 | abataev | 2017-08-16 08:58:46 -0700 (Wed, 16 Aug 2017) | 7 lines [OPENMP] Fix for PR28581: OpenMP linear clause - wrong results. If worksharing construct has at least one linear item, an implicit synchronization point must be emitted to avoid possible conflict with the loading/storing values to the original variables. Added implicit barrier if the linear item is found before actual start of the worksharing construct. ------------------------------------------------------------------------ git-svn-id: https://llvm.org/svn/llvm-project/cfe/branches/release_50@318105 91177308-0d34-0410-b5e6-96231b3b80d8
* Merging r309288:Tom Stellard2017-11-131-0/+46
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ------------------------------------------------------------------------ r309288 | erichkeane | 2017-07-27 09:28:20 -0700 (Thu, 27 Jul 2017) | 32 lines Fix double destruction of objects when OpenMP construct is canceled When an omp for loop is canceled the constructed objects are being destructed twice. It looks like the desired code is: { Obj o; If (cancelled) branch-through-cleanups to cancel.exit. } [cleanups] cancel.exit: __kmpc_for_static_fini br cancel.cont (*) cancel.cont: __kmpc_barrier return The problem seems to be the branch to cancel.cont is currently also going through the cleanups calling them again. This change just does a direct branch instead. Patch By: michael.p.rice@intel.com Differential Revision: https://reviews.llvm.org/D35854 ------------------------------------------------------------------------ git-svn-id: https://llvm.org/svn/llvm-project/cfe/branches/release_50@318099 91177308-0d34-0410-b5e6-96231b3b80d8
* Merging r308455:Hans Wennborg2017-07-191-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | ------------------------------------------------------------------------ r308455 | hans | 2017-07-19 05:31:01 -0700 (Wed, 19 Jul 2017) | 16 lines Revert r308441 "Recommit r308327: Add a warning for missing '#pragma pack (pop)' and suspicious uses of '#pragma pack' in included files" This seems to have broken the sanitizer-x86_64-linux buildbot. Reverting until it's fixed, especially since this landed just before the 5.0 branch. > This commit adds a new -Wpragma-pack warning. It warns in the following cases: > > - When a translation unit is missing terminating #pragma pack (pop) directives. > - When entering an included file if the current alignment value as determined > by '#pragma pack' directives is different from the default alignment value. > - When leaving an included file that changed the state of the current alignment > value. > > rdar://10184173 > > Differential Revision: https://reviews.llvm.org/D35484 ------------------------------------------------------------------------ git-svn-id: https://llvm.org/svn/llvm-project/cfe/branches/release_50@308457 91177308-0d34-0410-b5e6-96231b3b80d8
* Recommit r308327: Add a warning for missing '#pragma pack (pop)'Alex Lorenz2017-07-191-1/+1
| | | | | | | | | | | | | | | | | | | and suspicious uses of '#pragma pack' in included files This commit adds a new -Wpragma-pack warning. It warns in the following cases: - When a translation unit is missing terminating #pragma pack (pop) directives. - When entering an included file if the current alignment value as determined by '#pragma pack' directives is different from the default alignment value. - When leaving an included file that changed the state of the current alignment value. rdar://10184173 Differential Revision: https://reviews.llvm.org/D35484 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@308441 91177308-0d34-0410-b5e6-96231b3b80d8
* [OPENMP] Initial support for 'task_reduction' clause.Alexey Bataev2017-07-183-2/+318
| | | | | | Parsing/sema analysis of the 'task_reduction' clause. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@308352 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r308327Alex Lorenz2017-07-181-1/+1
| | | | | | | I forgot to test clang-tools-extra which is now failing. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@308328 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a warning for missing '#pragma pack (pop)' and suspicious usesAlex Lorenz2017-07-181-1/+1
| | | | | | | | | | | | | | | | | | | of '#pragma pack' in included files This commit adds a new -Wpragma-pack warning. It warns in the following cases: - When a translation unit is missing terminating #pragma pack (pop) directives. - When entering an included file if the current alignment value as determined by '#pragma pack' directives is different from the default alignment value. - When leaving an included file that changed the state of the current alignment value. rdar://10184173 Differential Revision: https://reviews.llvm.org/D35484 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@308327 91177308-0d34-0410-b5e6-96231b3b80d8
* [OPENMP] Pacify windows buildbots, NFC.Alexey Bataev2017-07-182-74/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@308243 91177308-0d34-0410-b5e6-96231b3b80d8
* [clang] Remove redundant check-prefix=CHECK from tests. NFC.Mandeep Singh Grang2017-07-172-2/+2
| | | | | | | | | | | | Reviewers: t.p.northover, mstorsjo, rsmith, mcrosier Reviewed By: mstorsjo, mcrosier Subscribers: mcrosier, javed.absar, cfe-commits Differential Revision: https://reviews.llvm.org/D35465 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@308192 91177308-0d34-0410-b5e6-96231b3b80d8
* [OPENMP] Fix reduction combiner testAlexey Bataev2017-07-172-2/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@308183 91177308-0d34-0410-b5e6-96231b3b80d8
* [OPENMP] Further fixes of the reduction codegen testsAlexey Bataev2017-07-172-140/+140
| | | | git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@308182 91177308-0d34-0410-b5e6-96231b3b80d8
* [OPENMP] Further test fixes.Alexey Bataev2017-07-172-116/+116
| | | | git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@308178 91177308-0d34-0410-b5e6-96231b3b80d8
* [OPENMP] Rework tests to pacify buildbots.Alexey Bataev2017-07-172-6/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@308176 91177308-0d34-0410-b5e6-96231b3b80d8
* [OPENMP] Codegen for reduction clauses in 'taskloop' directives.Alexey Bataev2017-07-1712-34/+504
| | | | | | Adds codegen for taskloop-based directives. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@308174 91177308-0d34-0410-b5e6-96231b3b80d8
* [OPENMP] Fix reduction tests, NFC.Alexey Bataev2017-07-132-10/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@307916 91177308-0d34-0410-b5e6-96231b3b80d8
* [OPENMP] Fix reduction tests, NFC.Alexey Bataev2017-07-132-2/+0
| | | | git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@307915 91177308-0d34-0410-b5e6-96231b3b80d8
* [OPENMP] Further reduction test fix, NFC.Alexey Bataev2017-07-132-18/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@307914 91177308-0d34-0410-b5e6-96231b3b80d8
* [OPENMP] Fix reduction tests, NFC.Alexey Bataev2017-07-132-12/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@307912 91177308-0d34-0410-b5e6-96231b3b80d8
* [OPENMP] Fix reduction tests, NFC.Alexey Bataev2017-07-132-8/+10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@307911 91177308-0d34-0410-b5e6-96231b3b80d8
* [OPENMP] Generalization of codegen for reduction clauses.Alexey Bataev2017-07-132-14/+15
| | | | | | | Reworked codegen for reduction clauses for future support of reductions in task-based directives. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@307910 91177308-0d34-0410-b5e6-96231b3b80d8
* [OPENMP] Emit implicit taskgroup block around taskloop directives.Alexey Bataev2017-07-122-2/+10
| | | | | | | | | If taskloop directive has no associated nogroup clause, it must emitted inside implicit taskgroup block. Runtime supports it, but we need to generate implicit taskgroup block explicitly to support future reductions codegen. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@307822 91177308-0d34-0410-b5e6-96231b3b80d8
* [OPENMP] Add restriction for reduction clause in taskloop directives.Alexey Bataev2017-07-114-8/+670
| | | | | | | | Added checks for the reduction clauses in the taskloop directives: 1. Only addressable items must be used in reduction clauses. 2. Reduction clauses cannot be used with nogroup clauses. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@307693 91177308-0d34-0410-b5e6-96231b3b80d8
* [OpenMP] Fix mapping of scalars for combined directivesJonas Hahnfeld2017-07-011-0/+26
| | | | | | | | | | | | | | | | Combined directives like 'target parallel' have two captured statements. Sema has to check the right one from the right direction. Previously, Sema::IsOpenMPCapturedByRef would return false for mapped scalars on combined directives. This results in a wrong signature of the outlined function which triggers an assertion: void llvm::CallInst::init(llvm::FunctionType *, llvm::Value *, ArrayRef<llvm::Value *>, ArrayRef<OperandBundleDef>, const llvm::Twine &): Assertion `(i >= FTy->getNumParams() || FTy->getParamType(i) == Args[i]->getType()) && "Calling a function with a bad signature!"' failed. Fixes PR30975 (and PR31985). New function was taken from clang-ykt. Differential Revision: https://reviews.llvm.org/D34888 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@306956 91177308-0d34-0410-b5e6-96231b3b80d8
* [OPENMP] Initial support for taskloop reductions.Alexey Bataev2017-06-302-16/+16
| | | | | | Add sema/parsupping ort for taskloop [simd] reductions. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@306825 91177308-0d34-0410-b5e6-96231b3b80d8
* [OPENMP][DEBUG] Generate second function with correct arg types.Alexey Bataev2017-06-2913-1452/+1541
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, if the some of the parameters are captured by value, this argument is converted to uintptr_t type and thus we loosing the debug info about real type of the argument (captured variable): ``` void @.outlined_function.(uintptr %par); ... %a = alloca i32 %a.casted = alloca uintptr %cast = bitcast uintptr* %a.casted to i32* %a.val = load i32, i32 *%a store i32 %a.val, i32 *%cast %a.casted.val = load uintptr, uintptr* %a.casted call void @.outlined_function.(uintptr %a.casted.val) ... ``` To resolve this problem, in debug mode a speciall external wrapper function is generated, that calls the outlined function with the correct parameters types: ``` void @.wrapper.(uintptr %par) { %a = alloca i32 %cast = bitcast i32* %a to uintptr* store uintptr %par, uintptr *%cast %a.val = load i32, i32* %a call void @.outlined_function.(i32 %a) ret void } void @.outlined_function.(i32 %par); ... %a = alloca i32 %a.casted = alloca uintptr %cast = bitcast uintptr* %a.casted to i32* %a.val = load i32, i32 *%a store i32 %a.val, i32 *%cast %a.casted.val = load uintptr, uintptr* %a.casted call void @.wrapper.(uintptr %a.casted.val) ... ``` git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@306697 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert "Revert r301742 which made ExprConstant checking apply to all ↵Diana Picus2017-06-1312-36/+24
| | | | | | | | | full-exprs." This reverts commit r305239 because it broke the buildbots (the diag-flags.cpp test is failing). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@305287 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r301742 which made ExprConstant checking apply to all full-exprs.Nick Lewycky2017-06-1212-24/+36
| | | | | | | This patch also exposed pre-existing bugs in clang, see PR32864 and PR33140#c3 . git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@305239 91177308-0d34-0410-b5e6-96231b3b80d8
* [OPENMP] Allow 'use_device_ptr' clause in 'target data' alone.Alexey Bataev2017-05-307-7/+7
| | | | | | | | According to OpenMP 5.0 at least one 'map' or 'use_device_ptr' clause must be specified for 'target data' construct. Patch adds support for this feature. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@304216 91177308-0d34-0410-b5e6-96231b3b80d8
* [OpenMP] Create COMDAT group for OpenMP offload registration code to avoid ↵George Rokos2017-05-2710-111/+137
| | | | | | | | | | | multiple copies Thanks to Sergey Dmitriev for submitting the patch. Differential Revision: https://reviews.llvm.org/D33509 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@304056 91177308-0d34-0410-b5e6-96231b3b80d8
* [OPENMP] Allow value of thread local variables in target regions.Alexey Bataev2017-05-241-18/+21
| | | | | | | | | If the variable is marked as TLS variable and target device does not support TLS, the error is emitted for the variable even if it is not used in target regions. Patch fixes this and allows to use the values of the TLS variables in target regions. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@303768 91177308-0d34-0410-b5e6-96231b3b80d8
* [OPENMP] Check DSA for variables captured by value.Alexey Bataev2017-05-151-0/+18
| | | | | | | | Currently clang checks for default data sharing attributes only for variables captured in OpenMP regions by reference. Patch adds checks for variables captured by value. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@303077 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix bugs checking va_start in lambdas and erroneous contextsReid Kleckner2017-05-041-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | Summary: First, getCurFunction looks through blocks and lambdas, which is wrong. Inside a lambda, va_start should refer to the lambda call operator prototype. This fixes PR32737. Second, we shouldn't use any of the getCur* methods, because they look through contexts that we don't want to look through (EnumDecl, CapturedStmtDecl). We can use CurContext directly as the calling context. Finally, this code assumed that CallExprs would never appear outside of code contexts (block, function, obj-c method), which is wrong. Struct member initializers are an easy way to create and parse exprs in a non-code context. Reviewers: rsmith Subscribers: cfe-commits Differential Revision: https://reviews.llvm.org/D32761 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@302188 91177308-0d34-0410-b5e6-96231b3b80d8
* [OpenMP] Extended parse for 'always' map modifierCarlo Bertolli2017-05-032-2/+63
| | | | | | | | | | | https://reviews.llvm.org/D32807 This patch allows the map modifier 'always' to be separated by the map type (to, from, tofrom) only by a whitespace, rather than strictly by a comma as in current trunk. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@302031 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove Sema::CheckForIntOverflow, and instead check all full-expressions.Nick Lewycky2017-04-2912-36/+24
| | | | | | | | | CheckForIntOverflow used to implement a whitelist of top-level expressions to send to the constant expression evaluator, which handled many more expressions than the CheckForIntOverflow whitelist did. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@301742 91177308-0d34-0410-b5e6-96231b3b80d8
* [OPENMP] Fix failing test.Alexey Bataev2017-04-261-2/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@301417 91177308-0d34-0410-b5e6-96231b3b80d8
* [OPENMP] Fix handling of OpenMP code during template instantiation.Alexey Bataev2017-04-261-0/+31
| | | | | | | | | If some function template is instantiated during handling of OpenMP code, currently it may cause crash of compiler because of trying of capturing variables in non-capturing function scopes. Patch fixes this bug. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@301416 91177308-0d34-0410-b5e6-96231b3b80d8
* Minor fix for distribute_parallel_for_num_threads_codegen on AARCH64Carlo Bertolli2017-04-251-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@301348 91177308-0d34-0410-b5e6-96231b3b80d8
* Recommit ofCarlo Bertolli2017-04-257-0/+4235
| | | | | | | | | | | | | | | | [OpenMP] Initial implementation of code generation for pragma 'distribute parallel for' on host https://reviews.llvm.org/D29508 This patch makes the following additions: It abstracts away loop bound generation code from procedures associated with pragma 'for' and loops in general, in such a way that the same procedures can be used for 'distribute parallel for' without the need for a full re-implementation. It implements code generation for 'distribute parallel for' and adds regression tests. It includes tests for clauses. It is important to notice that most of the clauses are implemented as part of existing procedures. For instance, firstprivate is already implemented for 'distribute' and 'for' as separate pragmas. As the implementation of 'distribute parallel for' is based on the same procedures, then we automatically obtain implementation for such clauses without the need to add new code. However, this requires regression tests that verify correctness of produced code. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@301340 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r301223Carlo Bertolli2017-04-247-4235/+0
| | | | git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@301233 91177308-0d34-0410-b5e6-96231b3b80d8
* [OpenMP] Initial implementation of code generation for pragma 'distribute ↵Carlo Bertolli2017-04-247-0/+4235
| | | | | | | | | | | | | | | | | | | | parallel for' on host https://reviews.llvm.org/D29508 This patch makes the following additions: 1. It abstracts away loop bound generation code from procedures associated with pragma 'for' and loops in general, in such a way that the same procedures can be used for 'distribute parallel for' without the need for a full re-implementation. 2. It implements code generation for 'distribute parallel for' and adds regression tests. It includes tests for clauses. It is important to notice that most of the clauses are implemented as part of existing procedures. For instance, firstprivate is already implemented for 'distribute' and 'for' as separate pragmas. As the implementation of 'distribute parallel for' is based on the same procedures, then we automatically obtain implementation for such clauses without the need to add new code. However, this requires regression tests that verify correctness of produced code. Looking forward to comments. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@301223 91177308-0d34-0410-b5e6-96231b3b80d8
* [OpenMP] Prepare sema to support combined constructs with omp distribute and ↵Carlo Bertolli2017-04-202-1/+154
| | | | | | | | | | | | omp for https://reviews.llvm.org/D32237 This patch prepares sema with additional fields to support all those composite and combined constructs of OpenMP that include pragma 'distribute' and 'for', such as 'distribute parallel for'. It also extends the regression tests for 'distribute parallel for' and adds a new one. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@300802 91177308-0d34-0410-b5e6-96231b3b80d8
* [OPENMP] Fix for PR32333: Crash in call of outlined Function.Alexey Bataev2017-04-101-0/+22
| | | | | | | | | If the type of the captured variable is a pointer(s) to variably modified type, this type was not processed correctly. Need to drill into the type, find the innermost variably modified array type and convert it to canonical parameter type. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@299868 91177308-0d34-0410-b5e6-96231b3b80d8
* [test] Unbreak OpenMP/linking.c with arch-specific libdirJonas Hahnfeld2017-03-081-8/+8
| | | | | | | After rL296927, -rpath gets added after linking the OpenMP runtime. That's why -lgcc does not immediately follow -lomp or -lgomp. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@297264 91177308-0d34-0410-b5e6-96231b3b80d8
* [OpenMP] Generate better diagnostics for cancel and cancellation pointJonas Hahnfeld2017-02-222-0/+16
| | | | | | | | | | | | | | | checkNestingOfRegions uses CancelRegion to determine whether cancel and cancellation point are valid in the given nesting. This leads to unuseful diagnostics if CancelRegion is invalid. The given test case has produced: region cannot be closely nested inside 'parallel' region As a solution, introduce checkCancelRegion and call it first to get the expected error: one of 'for', 'parallel', 'sections' or 'taskgroup' is expected Differential Revision: https://reviews.llvm.org/D30135 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@295808 91177308-0d34-0410-b5e6-96231b3b80d8
* [OpenMP] Fix cancellation point in task with no cancelJonas Hahnfeld2017-02-171-0/+15
| | | | | | | | | With tasks, the cancel may happen in another task. This has a different region info which means that we can't find it here. Differential Revision: https://reviews.llvm.org/D30091 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@295474 91177308-0d34-0410-b5e6-96231b3b80d8
* [OpenMP] Remove barriers at cancel and cancellation pointJonas Hahnfeld2017-02-172-20/+4
| | | | | | | | | | | | | | | | This resolves a deadlock with the cancel directive when there is no explicit cancellation point. In that case, the implicit barrier acts as cancellation point. After removing the barrier after cancel, the now unmatched barrier for the explicit cancellation point has to go as well. This has probably worked before rL255992: With the calls for the explicit barrier, it was sure that all threads passed a barrier before exiting. Reported by Simon Convent and Joachim Protze! Differential Revision: https://reviews.llvm.org/D30088 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@295473 91177308-0d34-0410-b5e6-96231b3b80d8
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