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* call __asan_load_cxx_array_cookie when loading array cookie in asan mode.Kostya Serebryany2014-08-291-5/+14
| | | | | | | | | | | | | | | | | | Summary: The current implementation of asan cookie is incorrect: we add nosanitize metadata to the cookie load, but the metadata may be lost and we will instrument the load from poisoned memory. This change replaces the load with a call to __asan_load_cxx_array_cookie (r216692) Reviewers: rsmith Reviewed By: rsmith Subscribers: cfe-commits Differential Revision: http://reviews.llvm.org/D5111 llvm-svn: 216702
* Better codegen support for DLL attributes being dropped after the first ↵Hans Wennborg2014-08-291-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | declaration (PR20792) For the following code: __declspec(dllimport) int f(int x); int user(int x) { return f(x); } int f(int x) { return 1; } Clang will drop the dllimport attribute in the AST, but CodeGen would have already put it on the LLVM::Function, and that would never get updated. (The same thing happens for global variables.) This makes Clang check dropped DLL attribute case each time the LLVM object is referenced. This isn't perfect, because we will still get it wrong if the function is never referenced by codegen after the attribute is dropped, but this handles the common cases and makes us not fail in the verifier. llvm-svn: 216699
* Don't create a null reference in ASTUnit::LoadFromCommandLine.Alexey Samsonov2014-08-281-2/+3
| | | | | | | | | This change is the last in the pack of five commits (also see r216691, r216694, r216695, and r216696) that reduces the number of test failures in "check-clang" invocation in UBSan bootstrap from 2443 down to 5. llvm-svn: 216697
* Don't load invalid enum value in Sema::LazilyCreateBuiltin.Alexey Samsonov2014-08-281-10/+8
| | | | | | This bug was reported by UBSan. llvm-svn: 216696
* Don't create a null reference to NestedNameSpecifier.Alexey Samsonov2014-08-281-1/+2
| | | | | | This bug was reported by UBSan. llvm-svn: 216691
* Call powerpc-darwin external tools with -arch ppc.Rafael Espindola2014-08-282-12/+4
| | | | | | | | | | With this patch we call external tools for powerpc-darwin with "-arch ppc" instead of "-arch powerpc", so as to be compatible with the cctools assembler and ld64 linker. Patch by Stephen Drake! llvm-svn: 216687
* Reverting r216675. This breaks some bots. Before this can be committed ↵Aaron Ballman2014-08-284-58/+7
| | | | | | again, I have to explore runtime ABI requirements with libc++abi. llvm-svn: 216677
* Objective-C IRGen. Fixes an assertion crash caused by inconsistentFariborz Jahanian2014-08-281-2/+1
| | | | | | | | linkage related to generation of OBJC_SELECTOR_REFERENCES symbol needed in generation of call to 'super' in a class method. // rdar://18150301 llvm-svn: 216676
* Throw a std::bad_array_new_length exception when the expression (or ↵Aaron Ballman2014-08-284-7/+58
| | | | | | constant-expression) passed to operator new[] results in overflow in conformance with [expr.new]p7. Fixes PR11644. llvm-svn: 216675
* arm_acle: Fix error in ROR implementationYi Kong2014-08-281-4/+4
| | | | | | | | The logic in calculating the rotate amount was flawed. Thanks Pasi Parviainen for pointing out! llvm-svn: 216669
* [CMake] clangStaticAnalyzerFrontend: Add clangLex, corresponding to r216550.NAKAMURA Takumi2014-08-281-0/+1
| | | | llvm-svn: 216664
* [ARM] Change default ABI for AArch32 to be "aapcs" (was "apcs-gnu")Oliver Stannard2014-08-281-2/+1
| | | | | | | | | | | | | | The current default abi when no environment is given is "apcs-gnu", which is obsolete. This patch changes the default to "aapcs". "aapcs" has both hard- and soft-float variants, so the -mhard-float, -msoft-float and -mfloat-abi= options now all behave as expected when no environment is specified in the triple. While writing this I also noticed that a preprocessor test claims to be checking darwin, but is actually checking the defaults, which are different for darwin. llvm-svn: 216662
* arm_acle: Implement data processing intrinsicsYi Kong2014-08-281-0/+74
| | | | | | | | | | | | | | | | | Summary: ACLE 2.0 section 9.2 defines the following "miscellaneous data processing intrinsics": `__clz`, `__cls`, `__ror`, `__rev`, `__rev16`, `__revsh` and `__rbit`. `__clz` has already been implemented in the arm_acle.h header file. The rest are not supported yet. This patch completes ACLE data processing intrinsics. Reviewers: t.p.northover, rengolin Reviewed By: rengolin Subscribers: aemerson, mroth, llvm-commits Differential Revision: http://reviews.llvm.org/D4983 llvm-svn: 216658
* [modules] When completing the redecl chain for an anonymous declaration in aRichard Smith2014-08-281-4/+14
| | | | | | | merged context, pull in the lexical decls in that context, since one of them may complete the redecl chain. llvm-svn: 216652
* [C++11] Support for capturing of variable length arrays in lambda expression.Alexey Bataev2014-08-2815-30/+135
| | | | | | Differential Revision: http://reviews.llvm.org/D4368 llvm-svn: 216649
* During cross field uninitialized checking, when processing an assignment,Richard Trieu2014-08-281-29/+43
| | | | | | | | | | | | | | | | | | | | | | don't mark the field as initialized until the next initializer instead of instantly. Since this checker is AST based, statements are processed in tree order instead of following code flow. This can result in different warnings from just reordering the code. Also changed to use one checker per constructor instead of creating a new checker per field. class T { int x, y; // Already warns T(bool b) : x(!b ? (1 + y) : (y = 5)) {} // New warning added here, previously (1 + y) comes after (y = 5) in the AST // preventing the warning. T(bool b) : x(b ? (y = 5) : (1 + y)) {} }; llvm-svn: 216641
* [modules] Number anonymous declarations that are lexically within mergeableRichard Smith2014-08-286-20/+138
| | | | | | contexts, so that we can merge them when we merge the surrounding context. llvm-svn: 216639
* Properly handle multiple nonnull attributes in CodeGenAlexey Samsonov2014-08-281-15/+25
| | | | llvm-svn: 216638
* Kill one of EmitCallArgs overloads. NFC.Alexey Samsonov2014-08-284-54/+38
| | | | llvm-svn: 216635
* [modules] Add an assert that we properly manage the IsCompleteDefinition flagRichard Smith2014-08-273-3/+9
| | | | | | | | on CXXRecordDecls when merging definitions, and make it pass by not trying to save and restore this flag across AST serialization/deserialization. For CXXRecordDecls, we have a separate mechanism to manage this. llvm-svn: 216633
* PR20769: Fix confusion when checking whether a prior default argument was inRichard Smith2014-08-272-6/+13
| | | | | | scope when checking for conflicts. llvm-svn: 216628
* More -Wuninitialized updatesRichard Trieu2014-08-273-11/+43
| | | | | | | | | | | Fix r216438 to catch more complicated self-initialized in std::move. For instance, "Foo f = std::move(cond ? OtherFoo : (UNUSED_VALUE, f));" Make sure that BinaryConditionalOperator, ConditionalOperator, BinaryOperator with comma operator, and OpaqueValueExpr perform the correct usage forwarding across the three uninitialized value checkers. llvm-svn: 216627
* Query CompilationDatabase right before running each compilation.Alexander Kornienko2014-08-271-49/+44
| | | | | | | | | | | | | | | | | Summary: Query CompilationDatabase right before running each compilation. This allows supporting compilation databases that change external state required for successful compilation. Reviewers: klimek, djasper Reviewed By: djasper Subscribers: klimek, cfe-commits Differential Revision: http://reviews.llvm.org/D5086 llvm-svn: 216620
* Allow adding dll attributes on certain redecls with a warning if the decl ↵Hans Wennborg2014-08-271-6/+23
| | | | | | | | | | | | hasn't been used yet (PR20746) This shouldn't really be allowed, but it comes up in real code (see PR). As long as the decl hasn't been used there's no technical difficulty in supporting it, so downgrade the error to a warning. Differential Revision: http://reviews.llvm.org/D5087 llvm-svn: 216619
* Overload SourceManager::overrideFileContents so that unconditionally passing ↵David Blaikie2014-08-276-8/+8
| | | | | | | | | | ownership is explicitly done using unique_ptr. Only those callers who are dynamically passing ownership should need the 3 argument form. Those accepting the default ("do pass ownership") should do so explicitly with a unique_ptr now. llvm-svn: 216614
* Objective-C. Change to method lookup rules to lookFariborz Jahanian2014-08-271-12/+15
| | | | | | | | | | into primary class's named categories before looking into their protocols. This is because categories are part of the public interface and , just as primary class, preference should be given to them before class (and category) protocols. // rdar://18013929 llvm-svn: 216610
* Update for LLVM api change.Rafael Espindola2014-08-2715-51/+53
| | | | llvm-svn: 216585
* Update for llvm API change.Rafael Espindola2014-08-272-2/+2
| | | | llvm-svn: 216576
* Fix regression in r216520: don't apply nonnull to non-pointer functionRichard Smith2014-08-271-2/+11
| | | | | | parameters in the IR. llvm-svn: 216574
* Fix PR20773 which I introduced with a silly edit mistake in r216531.Chandler Carruth2014-08-271-1/+1
| | | | | | | Trivial fix, and I've made the gentoo tests more representative. With the changes, they would have caught this failure. llvm-svn: 216572
* clang-format: Address review comments of r216501.Daniel Jasper2014-08-271-2/+1
| | | | llvm-svn: 216565
* Call ResolveExceptionSpec for non-OdrUsed functions.Nico Weber2014-08-271-6/+9
| | | | | | | | In C++11, instantiation of exception specs is deferred. The instantiation is done in MarkFunctionReferenced(), which wasn't called for non-OdrUsed functions, which then caused an assert in codegen. Fixes PR19190, see the bug for details. llvm-svn: 216562
* Objective-C. When multiple nullary selectors are found inFariborz Jahanian2014-08-271-1/+11
| | | | | | | | | | global pool in the course of method selection for a messaging expression, select one with the most general return type of 'id'. This is to remove type-mismatch warning (which is useless) as result of random selection of method with more restrictive return type. rdar://18095772 llvm-svn: 216560
* Allow __fp16 as a function arg or return type for AArch64Oliver Stannard2014-08-277-29/+53
| | | | | | | | | | | ACLE 2.0 allows __fp16 to be used as a function argument or return type. This enables this for AArch64. This also fixes an existing bug that causes clang to not allow homogeneous floating-point aggregates with a base type of __fp16. This is valid for AAPCS64, but not for AAPCS-VFP. llvm-svn: 216558
* Add support for the static analyzer to synthesize function implementations ↵Ted Kremenek2014-08-2716-37/+348
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | from external model files. Currently the analyzer lazily models some functions using 'BodyFarm', which constructs a fake function implementation that the analyzer can simulate that approximates the semantics of the function when it is called. BodyFarm does this by constructing the AST for such definitions on-the-fly. One strength of BodyFarm is that all symbols and types referenced by synthesized function bodies are contextual adapted to the containing translation unit. The downside is that these ASTs are hardcoded in Clang's own source code. A more scalable model is to allow these models to be defined as source code in separate "model" files and have the analyzer use those definitions lazily when a function body is needed. Among other things, it will allow more customization of the analyzer for specific APIs and platforms. This patch provides the initial infrastructure for this feature. It extends BodyFarm to use an abstract API 'CodeInjector' that can be used to synthesize function bodies. That 'CodeInjector' is implemented using a new 'ModelInjector' in libFrontend, which lazily parses a model file and injects the ASTs into the current translation unit. Models are currently found by specifying a 'model-path' as an analyzer option; if no path is specified the CodeInjector is not used, thus defaulting to the current behavior in the analyzer. Models currently contain a single function definition, and can be found by finding the file <function name>.model. This is an initial starting point for something more rich, but it bootstraps this feature for future evolution. This patch was contributed by Gábor Horváth as part of his Google Summer of Code project. Some notes: - This introduces the notion of a "model file" into FrontendAction and the Preprocessor. This nomenclature is specific to the static analyzer, but possibly could be generalized. Essentially these are sources pulled in exogenously from the principal translation. Preprocessor gets a 'InitializeForModelFile' and 'FinalizeForModelFile' which could possibly be hoisted out of Preprocessor if Preprocessor exposed a new API to change the PragmaHandlers and some other internal pieces. This can be revisited. FrontendAction gets a 'isModelParsingAction()' predicate function used to allow a new FrontendAction to recycle the Preprocessor and ASTContext. This name could probably be made something more general (i.e., not tied to 'model files') at the expense of losing the intent of why it exists. This can be revisited. - This is a moderate sized patch; it has gone through some amount of offline code review. Most of the changes to the non-analyzer parts are fairly small, and would make little sense without the analyzer changes. - Most of the analyzer changes are plumbing, with the interesting behavior being introduced by ModelInjector.cpp and ModelConsumer.cpp. - The new functionality introduced by this change is off-by-default. It requires an analyzer config option to enable. llvm-svn: 216550
* clang-format: Fix regression in formatting of braced initializers.Daniel Jasper2014-08-271-1/+3
| | | | | | | | | | | | Before: Node n{1, Node{1000}, // 2}; After: Node n{1, Node{1000}, // 2}; llvm-svn: 216540
* Move some ARM-specific code from CGCall.cpp to TargetInfo.cppOliver Stannard2014-08-272-55/+45
| | | | | | | | | This tidies up some ARM-specific code added by r208417 to move it out of the target-independent parts of clang into TargetInfo.cpp. This also has the advantage that we can now flatten struct arguments to variadic AAPCS functions. llvm-svn: 216535
* [asan] Restore asan-rt name on linux back to pre-r216380.Evgeniy Stepanov2014-08-271-2/+1
| | | | | | | | | | There is no reason to have different library names for shared and static cases on linux. It also breaks Android where we install the shared asan-rt library into the system and should keep the old name. This change reverts most of r216380 limiting it to win32 targets only. llvm-svn: 216533
* Significantly fix Clang's header search for Ubuntu (and possibly otherChandler Carruth2014-08-272-28/+44
| | | | | | | | | | | | | | | | | | | | | | | | | | modern Debian-based distributions) due to on-going multiarch madness. It appears that when the multiarch heeader search support went into the clang driver, it went in in a quite bad state. The order of includes completely failed to match the order exhibited by GCC, and in a specific case -- when the GCC triple and the multiarch triple don't match as with i686-linux-gnu and i386-linux-gnu -- we would absolutely fail to find the libstdc++ target-specific header files. I assume that folks who have been using Clang on Ubuntu 32-bit systems have been applying weird patches to hack around this. I can't imagine how else it could have worked. This was originally reported by a 64-bit operating system user who had a 32-bit crosscompiler installed. We tried to use that rather than the bi-arch support of the 64-bit compiler, but failed due to the triple differences. I've corrected all the wrong orderings in the existing tests and added a specific test for the multiarch triple strings that are different in a significant way. This should significantly improve the usability of Clang when checked out vanilla from upstream onto Ubuntu machines with an i686 GCC installation for whatever reason. llvm-svn: 216531
* Simplify creation of a bunch of ArrayRefs by using None, makeArrayRef or ↵Craig Topper2014-08-2721-66/+56
| | | | | | just letting them be implicitly created. llvm-svn: 216528
* Fix some cases were ArrayRefs were being passed by reference.Craig Topper2014-08-273-11/+11
| | | | llvm-svn: 216527
* Refactor one of the larger functions for Type Diffing into smaller functions.Richard Trieu2014-08-271-185/+215
| | | | | | No functionality change. llvm-svn: 216526
* Fix representation of __attribute__((nonnull)) to support correctly modelingRichard Smith2014-08-273-41/+64
| | | | | | | | | | | | | | | the no-arguments case. Don't expand this to an __attribute__((nonnull(A, B, C))) attribute, since that does the wrong thing for function templates and varargs functions. In passing, fix a grammar error in the diagnostic, a crash if __attribute__((nonnull(N))) is applied to a varargs function, a bug where the same null argument could be diagnosed multiple times if there were multiple nonnull attributes referring to it, and a bug where nonnull attributes would not be accumulated correctly across redeclarations. llvm-svn: 216520
* Change a few methods to static methods. No functionality change.Richard Trieu2014-08-271-12/+15
| | | | llvm-svn: 216519
* PR20760: Don't assert (and produce better diagnostics) if a default initializerRichard Smith2014-08-272-20/+30
| | | | | | contains an unmatched closing bracket token. llvm-svn: 216518
* Refactor the diagnostic DeclContext printing. No functionality change.Richard Trieu2014-08-271-10/+6
| | | | llvm-svn: 216517
* Re-apply r216491 (Win64 ABI shouldn't extend integer type arguments.)Julien Lerouge2014-08-271-1/+4
| | | | | | | | | This time though, preserve the extension for bool types since that's compatible with what MSVC expects. See http://reviews.llvm.org/D4380 llvm-svn: 216507
* [modules] Don't assert when merging virtual functions that override otherRichard Smith2014-08-261-5/+12
| | | | | | | functions. Also don't needlessly pull in non-canonical declarations of the overridden virtual functions. llvm-svn: 216503
* clang-format: Don't butcher __asm blocks.Daniel Jasper2014-08-261-0/+15
| | | | | | | | Instead completely cop out of formatting them for now. This fixes llvm.org/PR20618. llvm-svn: 216501
* Revert 216491, it breaks CodeGenCXX/microsoft-abi-member-pointers.cppJulien Lerouge2014-08-261-0/+3
| | | | llvm-svn: 216496
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