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2013-04-18[libclang] Report parameter array types as written in source, not decayed to ↵Argyrios Kyrtzidis
pointer types. Patch by Doug. rdar://13684618 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179769 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-18[analyzer] "Force" LazyCompoundVals on bind when they are simple enough.Jordan Rose
The analyzer uses LazyCompoundVals to represent rvalues of aggregate types, most importantly structs and arrays. This allows us to efficiently copy around an entire struct, rather than doing a memberwise load every time a struct rvalue is encountered. This can also keep memory usage down by allowing several structs to "share" the same snapshotted bindings. However, /lookup/ through LazyCompoundVals can be expensive, especially since they can end up chaining back to the original value. While we try to reuse LazyCompoundVals whenever it's safe, and cache information about this transitivity, the fact is it's sometimes just not a good idea to perpetuate LazyCompoundVals -- the tradeoffs just aren't worth it. This commit changes RegionStore so that binding a LazyCompoundVal to struct will do a memberwise copy if the struct is simple enough. Today's definition of "simple enough" is "up to N scalar members" (see below), but that could easily be changed in the future. This is enough to bring the test case in PR15697 back down to a manageable analysis time (within 20% of its original time, in an unfair test where the new analyzer is not compiled with LTO). The actual value of "N" is controlled by a new -analyzer-config option, 'region-store-small-struct-limit'. It defaults to "2", meaning structs with zero, one, or two scalar members will be considered "simple enough" for this code path. It's worth noting that a more straightforward implementation would do this on load, not on bind, and make use of the structure we already have for this: CompoundVal. A long time ago, this was actually how RegionStore modeled aggregate-to-aggregate copies, but today it's only used for compound literals. Unfortunately, it seems that we've special-cased LazyCompoundVal in certain places (such as liveness checks) but failed to similarly special-case CompoundVal in all of them. Until we're confident that CompoundVal is handled properly everywhere, this solution is safer, since the entire optimization is just an implementation detail of RegionStore. <rdar://problem/13599304> git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179767 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-18[analyzer] Don't crash if we cache out after making a temporary region.Jordan Rose
A C++ overloaded operator may be implemented as an instance method, and that instance method may be called on an rvalue object, which has no associated region. The analyzer handles this by creating a temporary region just for the evaluation of this call; however, it is possible that /by creating the region/, the analyzer ends up in a previously-explored state. In this case we don't need to continue along this path. This doesn't actually show any behavioral change now, but it starts being used with the next commit and prevents an assertion failure there. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179766 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-18Reject asm output constraints that consist of modifiers only.Benjamin Kramer
Fixes PR15759. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179756 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-18[Parser] Handle #pragma pack/align inside C structs.Argyrios Kyrtzidis
Fixes PR13580. Patch by Serge Pavlov! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179743 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-18Switch the note order for -Woverloaded-shift-op-parentheses so that the noteRichard Trieu
with the silence fix-it comes first. This is more consistent with the rest of the warnings in -Wparentheses. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179742 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-18Update the -Wparentheses tests to check that fix-its are in the correct place.Richard Trieu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179740 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-18[analyzer] Tweak getDerefExpr more to track DeclRefExprs to references.Anna Zaks
In the committed example, we now see a note that tells us when the pointer was assumed to be null. This is the only case in which getDerefExpr returned null (failed to get the dereferenced expr) throughout our regression tests. (There were multiple occurrences of this one.) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179736 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-17[analyzer] Improve dereferenced expression tracking for MemberExpr with a ↵Anna Zaks
dot and non-reference base git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179734 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-17[analyzer] Gain more precision retrieving the right SVal by specifying the ↵Anna Zaks
type of the expression. Thanks to Jordan for suggesting the fix. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179732 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-17[analyzer] Allow TrackConstraintBRVisitor to work when the value it’s ↵Anna Zaks
tracking is not live in the last node of the path We always register the visitor on a node in which the value we are tracking is live and constrained. However, the visitation can restart at a node, later on the path, in which the value is under constrained because it is no longer live. Previously, we just silently stopped tracking in that case. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179731 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-17Add support for gcc's spelling of -fcolor-diagnostics.Nico Weber
See http://gcc.gnu.org/onlinedocs/gcc/Language-Independent-Options.html git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179728 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-17[tests] Only include stdint.h if we are in freestanding mode.Daniel Dunbar
- We shouldn't even try to include stdint.h in hosted mode, as the dependency on even parsing a platforms stdint.h might fail for some targets. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179723 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-17[document parsing]: When tag declaration (but not definition!) Fariborz Jahanian
is part of the decl-specifier-seq of some other declaration, it doesn't get comment. // rdar://12390371 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179722 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-17Test cases for r179719.Chad Rosier
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179720 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-17Fix off-by-one error in #pragma clang system_header.Jordan Rose
The system_header pragma (from GCC) is implemented using line notes in the source manager. However, a line note's line number specifies the number not for the current line, but for the next line. This was making all line numbers appear off by one after the pragma. Reported by Andy Gibbs, uncovered during r179677. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179709 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-17PR15755: don't drop parameter packs when dropping parameters with defaultRichard Smith
arguments in the formation of a candidate set of inheriting constructors. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179708 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-17[analyzer] Don't warn for returning void expressions in void blocks.Jordan Rose
This was slightly tricky because BlockDecls don't currently store an inferred return type. However, we can rely on the fact that blocks with inferred return types will have return statements that match the inferred type. <rdar://problem/13665798> git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179699 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-17Revert r179671 and just pass a triple to the test for a platform with knownEric Christopher
TLS support. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179692 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-17DR974: Lambdas can have default arguments.Richard Smith
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179688 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-17Implemented #pragma GCC warning/error in the same mould as #pragma message.Andy Gibbs
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179687 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-17Set SRet flags properly in '-cxx-abi microsoft'.Timur Iskhodzhanov
Also, - abstract out the indirect/in memory/in registers decisions into the CGCXXABI - fix handling of empty struct arguments for '-cxx-abi microsoft' - add/fix tests git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179681 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-17Fix PR15291: noreturn adjustment in overload resolution for function ↵Douglas Gregor
templates, from Alexander Zinenko! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179680 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-17Extended VerifyDiagnosticConsumer to also verify source file for diagnostic.Andy Gibbs
VerifyDiagnosticConsumer previously would not check that the diagnostic and its matching directive referenced the same source file. Common practice was to create directives that referenced other files but only by line number, and this led to problems such as when the file containing the directive didn't have enough lines to match the location of the diagnostic in the other file, leading to bizarre file formatting and other oddities. This patch causes VerifyDiagnosticConsumer to match source files as well as line numbers. Therefore, a new syntax is made available for directives, for example: // expected-error@file:line {{diagnostic message}} This extends the @line feature where "file" is the file where the diagnostic is generated. The @line syntax is still available and uses the current file for the diagnostic. "file" can be specified either as a relative or absolute path - although the latter has less usefulness, I think! The #include search paths will be used to locate the file and if it is not found an error will be generated. The new check is not optional: if the directive is in a different file to the diagnostic, the file must be specified. Therefore, a number of test-cases have been updated with regard to this. This closes out PR15613. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179677 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-17Add a bit of a hack to deal with a failing testcase on darwin10 bots.Eric Christopher
We currently emit an error message when you try to use thread local storage on targets that don't support it and testing C++11 thread locals will trip this. We don't want to xfail the test for all darwin hosts so add a quick hack to check for darwin10 and disable the test based on that. Only checking darwin10 because anything earlier is really old and I don't have a list of what other hosts don't support tls handy. Alternate suggestions welcome! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179671 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-17Remove dead option.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179670 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-17Add warning group -Woverloaded-shift-op-parentheses to -Wparentheses. ThisRichard Trieu
will fire on code such as: cout << x == 0; which the compiler will intrepret as (cout << x) == 0; This warning comes with two fixits attached to notes, one for parentheses to silence the warning, and another to evaluate the comparison first. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179662 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-17Correct the range returned by ParmVarDecl::getSourceRange(), for parameters ↵Argyrios Kyrtzidis
in ObjC methods with postfix types. For a parameter in a method like this: -(int)methodWithFn:(void (*)(int *p))fn; we would return the source range of the type and not include the parameter name. Fixes rdar://13668626. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179660 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-17Test cases for r179655.Chad Rosier
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179656 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-17Use the extra info in global method pool to speed up looking for ObjC ↵Argyrios Kyrtzidis
overridden methods. When we are in a implementation, we check the global method pool whether there were category methods with the same selector. If there were none (common case) we don't need to do lookups for overridden methods again. Note that for an interface method (if we don't encounter its implementation), it is considered that it overrides methods that were declared before it, not for category methods introduced after it. This is tradeoff in favor of performance, since it is expensive to do lookups in case there was a category, and moving the global method pool to ASTContext (so we can check it) would increase complexity. rdar://13508196 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179654 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-16Don't put too much thought into whether or not to capture aJohn McCall
type-dependent intermediate result in a postfix ++ pseudo- object operation. Test case by Tong Shen. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179637 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-16Make test portable.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179635 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-16[analyzer] Add experimental option "leak-diagnostics-reference-allocation".Ted Kremenek
This is an opt-in tweak for leak diagnostics to reference the allocation site if the diagnostic consumer only wants a pithy amount of information, and not the entire path. This is a strawman enhancement that I expect to see some experimentation with over the next week, and can go away if we don't want it. Currently it is only used by RetainCountChecker, but could be used by MallocChecker if and when we decide this should stay in. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179634 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-16objc_autoreleasePoolPop() can throw if a -dealloc does.John McCall
Model it as throwing so that the exception can be caught. This is generally not expected to have significant code-size impact because the contents of the @autoreleasepool block are very likely to contain a call, very likely at the same cleanup level as the @autoreleasepool itself. rdar://13660038 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179630 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-16Trying fixing test to make buildbot happy again.Fariborz Jahanian
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179629 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-16Sema for Captured StatementsTareq A. Siraj
Add CapturedDecl to be the DeclContext for CapturedStmt, and perform semantic analysis. Currently captures all variables by reference. TODO: templates Author: Ben Langmuir <ben.langmuir@intel.com> Differential Revision: http://llvm-reviews.chandlerc.com/D433 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179618 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-16rewrite-includes: Rewrite __has_include(_next) to get rid of a host dependency.Benjamin Kramer
This broke e.g. compiling a crash report from a glibc system on Darwin. Sadly, the implementation had to game the lexer a lot as we're not using a real preprocessor here. It also doesn't handle special cases like arbitrary macros in __has_include, but since this macro isn't common outside of clang's headers we can get away with that. Fixes PR14422. Differential Revision: http://llvm-reviews.chandlerc.com/D594 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179616 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-16Parser support for #pragma clang __debug capturedTareq A. Siraj
This patch implements parsing ‘#pragma clang __debug’ as a first step for implementing captured statements. Captured statements are a mechanism for doing outlining in the AST. see http://lists.cs.uiuc.edu/pipermail/cfe-dev/2013-January/027540.html. Currently returns StmtEmpty Author: Andy Zhang <andy.zhang@intel.com> Differential Revision: http://llvm-reviews.chandlerc.com/D369 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179614 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-16[Modules] Convert module specific -fno-modules-autolink into -fno-autolink.Daniel Dunbar
- There is no reason to have a modules specific flag for disabling autolinking. Instead, convert the existing flag into -fno-autolink (which should cover other autolinking code generation paths like #pragmas if and when we support them). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179612 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-16modify test to try to make buildbot happy.Fariborz Jahanian
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179606 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-16Remove setjmp.h header file from Sema/return.c test and include necessaryJyotsna Verma
declarations explicitly in the test. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179604 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-16Fix PR4296: Add parser detection/error recovery for nested functions, from ↵Douglas Gregor
Serve Pavlov! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179603 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-16Use -emit-llvm for the following tests to stop them from failing for Hexagon:Jyotsna Verma
CodeGenCXX/vtable-debug-info.cpp Driver/objc++-cpp-output.mm Driver/objc-cpp-output.m git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179602 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-16Fix handling of atomic shift operations, from Serge Pavlov.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179600 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-16Objective-C IRGen. Use llvm::WeakVHFariborz Jahanian
for caching couple of global symbols used for generation of CF/NS string meta-data so they are not released prematuely in certain corner cases. // rdar:// 13598026. Reviewed by John M. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179599 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-16Suppress unused warning on static inline function template specializations.Rafael Espindola
Patch by Halfdan Ingvarsson! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179598 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-16Add support for sparcv9 targets.Jakob Stoklund Olesen
The SPARC v8 and SPARC v8 architectures are very similar, so use a base class to share most information between them. Include operating systems with known SPARC v9 ports. Also fix two issues with the SPARC v8 data layout string: SPARC v8 is a big endian target with a 64-bit aligned stack. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179596 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-16Basic support for Microsoft property declarations andJohn McCall
references thereto. Patch by Tong Shen! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179585 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-16Correctly propagate the storage class to function template instantiations.Rafael Espindola
This fixes pr15753. This is another case of the fuzzy definition of the "as written" storage class of an instantiation. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179581 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-16[analyzer] Improve the malloc checker stack hint messageAnna Zaks
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179580 91177308-0d34-0410-b5e6-96231b3b80d8
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