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2012-10-24Move HeaderSearchOptions into the Lex library, make it intrusivelyDouglas Gregor
reference-counted, and hold a reference to it in HeaderSearch. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166583 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-24Removed an extra blank line.Mahesha S
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166571 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-23Make DiagnosticOptions intrusively reference-counted, and make sureDouglas Gregor
the various stakeholders bump up the reference count. In particular, the diagnostics engine now keeps the DiagnosticOptions object alive. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166508 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-22Fix for PR13334. This prevents crashes that result from badly formedRichard Trieu
expressions involving __has_include git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166438 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-15Teach TargetInfo to hold on to the TargetOptions with which it wasDouglas Gregor
created. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@165943 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-15Introduce the notion of excluded headers into the module mapDouglas Gregor
description. Previously, one could emulate this behavior by placing the header in an always-unavailable submodule, but Argyrios guilted me into expressing this idea properly. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@165921 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-12Sanitize the names of modules determined based on the names of headersDouglas Gregor
or directories, to make sure that they are identifiers that are not keywords in any dialect. Fixes <rdar://problem/12489495>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@165821 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-12Track which particular submodule #undef's a macro, so that the actualDouglas Gregor
#undef only occurs if that submodule is imported. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@165773 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-11Diagnose the expansion of ambiguous macro definitions. This can happenDouglas Gregor
only with modules, when two disjoint modules #define the same identifier to different token sequences. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@165746 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-11Introduce a simple "hint" scheme to eliminate the quadratic behaviorDouglas Gregor
associated with deserializing macro history for an identifier. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@165729 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-11Remove an unused bit from the serialized IdentifierInfoDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@165683 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-11Deserialize macro history when we deserialize an identifier that hasDouglas Gregor
macro history. When deserializing macro history, we arrange history such that the macros that have definitions (that haven't been #undef'd) and are visible come at the beginning of the list, which is what the preprocessor and other clients of Preprocessor::getMacroInfo() expect. If additional macro definitions become visible later, they'll be moved toward the front of the list. Note that it's possible to have ambiguities, but we don't diagnose them yet. There is a partially-implemented design decision here that, if a particular identifier has been defined or #undef'd within the translation unit, that definition (or #undef) hides any macro definitions that come from imported modules. There's still a little work to do to ensure that the right #undef'ing happens. Additionally, we'll need to scope the update records for #undefs, so they only kick in when the submodule containing that update record becomes visible. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@165682 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-09Rework the (de-)serialization of macros, as stored inDouglas Gregor
MacroInfo*. Instead of simply dumping an offset into the current file, give each macro definition a proper ID with all of the standard modules-remapping facilities. Additionally, when a macro is modified in a subsequent AST file (e.g., #undef'ing a macro loaded from another module or from a precompiled header), provide a macro update record rather than rewriting the entire macro definition. This gives us greater consistency with the way we handle declarations, and ties together macro definitions much more cleanly. Note that we're still not actually deserializing macro history (we never were), but it's far easy to do properly now. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@165560 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-05[Modules] Introduce Module::TopHeaders which is a set of top-level headersArgyrios Kyrtzidis
that are associated with a (sub)module. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@165279 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-05[preprocessing record] Have PPEntityID be independent of the size of theArgyrios Kyrtzidis
loaded entities vector, otherwise its meaning will change when a module is imported and the vector size changes. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@165278 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-02Add info in the preprocessing record whether an inclusion directiveArgyrios Kyrtzidis
resulted in an automatic module import. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@165022 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-29Move the 'find macro by spelling' infrastructure to the Preprocessor class andDmitri Gribenko
use it to suggest appropriate macro for __attribute__((deprecated)) in -Wdocumentation-deprecated-sync. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164892 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-29For PPCallbacks::InclusionDirective() add a parameter for the module, wheneverArgyrios Kyrtzidis
an inclusion directive was automatically turned into a module import, and PPCallbacks::moduleImport() for an explicit module import. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164874 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-29Add an assertion to make sure the implicitly imported moduleArgyrios Kyrtzidis
is the same as the suggested one when looking up the include filename. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164872 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-28Compatibility macro detection for the -Wimplicit-fallthrough diagnostic.Alexander Kornienko
Summary: When issuing a diagnostic message for the -Wimplicit-fallthrough diagnostics, always try to find the latest macro, defined at the point of fallthrough, which is immediately expanded to "[[clang::fallthrough]]", and use it's name instead of the actual sequence. Known issues: * uses PP.getSpelling() to compare macro definition with a string (anyone can suggest a convenient way to fill a token array, or maybe lex it in runtime?); * this can be generalized and used in other similar cases, any ideas where it should reside then? Reviewers: doug.gregor, rsmith Reviewed By: rsmith CC: cfe-commits Differential Revision: http://llvm-reviews.chandlerc.com/D50 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164858 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-27Following up on r164620, cope with symlinking from an embeddedDouglas Gregor
framework location out to a top-level framework. Such frameworks are not really embedded at all. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164774 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-27Per discussion in ↵Argyrios Kyrtzidis
http://lists.cs.uiuc.edu/pipermail/cfe-commits/Week-of-Mon-20120917/064551.html have PPCallbacks::InclusionDirective pass the character range for the filename quotes or brackets. rdar://11113134 & http://llvm.org/PR13880 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164743 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-26Revert r163022, it caused PR13924.Nico Weber
Add a test for PR13924. Do not revert the test added in r163022, it surprisingly still passes even after reverting the code changes. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164672 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-25Rename CanFitInto64Bits to alwaysFitsInto64Bits per discussion on IRC.Jordan Rose
This makes the behavior clearer concerning literals with the maximum number of digits. For a 32-bit example, 4,000,000,000 is a valid uint32_t, but 5,000,000,000 is not, so we'd have to count 10-digit decimal numbers as "unsafe" (meaning we have to check for overflow when parsing them, just as we would for numbers with 11 digits or higher). This is the same, only with 64 bits to play with. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164639 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-25Optimize NumericLiteralParser::GetIntegerValue().Dmitri Gribenko
It does a conservative estimate on the size of numbers that can fit into uint64_t. This bound is improved. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164624 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-25Under certain terrible circumstances (<rdar://problem/10805775>),Douglas Gregor
top-level frameworks can actually be symlinked over to embedded frameworks, and accessed via the top-level framework's headers. In this case, we need to determine that the framework was *actually* an embedded framework, so we can load the appropriate top-level module. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164620 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-25Macro history (de-)serialization. Deserialization currently reads only the ↵Alexander Kornienko
latest macro definition. Needs more work. Summary: Passes all tests (+ the new one with code completion), but needs a thorough review in part related to modules. Reviewers: doug.gregor Reviewed By: alexfh CC: cfe-commits, rsmith Differential Revision: http://llvm-reviews.chandlerc.com/D41 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164610 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-25Introduce builtin macros to determine whether we're building aDouglas Gregor
specific module (__building_module(modulename)) and to get the name of the current module as an identifier (__MODULE__). Used to help headers behave differently when they're being included as part of building a module. Oh, the irony. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164605 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-24StringRef'ize Preprocessor::CreateString().Dmitri Gribenko
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164555 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-24Replace raw call to snprintf() by llvm streams.Dmitri Gribenko
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164554 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-24Change the wording of the extension warning fromDmitri Gribenko
> 'long long' is an extension when C99 mode is not enabled to > 'long long' is a C++11 extension while compiling in C++98 mode. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164545 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-24Small cleanup of literal semantic analysis: hiding 'char *' pointers behindDmitri Gribenko
StringRef makes code cleaner. Also, make the temporary buffer smaller: 512 characters is unreasonably large for integer literals. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164484 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-20The keywords "true" and "false" shouldn't warn under -Wundef.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164279 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-18Remove an unused private field exposed by the recent LLVM_DELETED_FUNCTION ↵Craig Topper
changes. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164103 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-16Fix dead store found by static analyzer.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@163994 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-11[libclang] Fix getting a cursor inside an angled #include directive.Argyrios Kyrtzidis
Fixed by pointing the end location of the preprocessed entity for the #include at the closing '>', instead of the start of '<'. rdar://11113134 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@163588 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-08When a bad UTF-8 encoding or bogus escape sequence is encountered in aRichard Smith
string literal, produce a diagnostic pointing at the erroneous character range, not at the start of the literal. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@163459 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-06Dont cast away const needlessly. Found by gcc48 -Wcast-qual.Roman Divacky
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@163325 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-31Normalize line endings of r163022.Joao Matos
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@163023 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-31Emulate MSVC's preprocessor macro argument separator behavior by not ↵Joao Matos
considering commas from nested macro expansions as argument separators. Fixes parsing of VS 2012 headers. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@163022 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-31Make a bunch of methods on Lexer private.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162970 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-30Extend the "__is_pod" hack, which demotes various type trait keywordsDouglas Gregor
(__is_pod, __is_signed, etc.) to normal identifiers if they are encountered in certain places in the grammar where we know that prior versions of libstdc++ or libc++ use them, to still allow the use of these keywords as type traits. Fixes <rdar://problem/9836262> and PR10184. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162937 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-30Make preprocessor act in a GCC-compatible fashion when a macro is redefinedRichard Smith
within its own argument list. The original definition is used for the immediate expansion, but the new definition is used for any subsequent occurences within the argument list or after the expansion. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162906 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-29Fixed a problem with #pragma push_macro/pop_macro implementation.Alexander Kornienko
Summary: The problem was with the following sequence: #pragma push_macro("long") #undef long #pragma pop_macro("long") in case when "long" didn't represent a macro. Fixed crash and removed code duplication for #undef/pop_macro case. Added regression tests. Reviewers: doug.gregor, klimek Reviewed By: doug.gregor CC: cfe-commits, chapuni Differential Revision: http://llvm-reviews.chandlerc.com/D31 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162845 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-29Keep history of macro definitions and #undefsAlexander Kornienko
Summary: Summary: Keep history of macro definitions and #undefs with corresponding source locations, so that we can later find out all macros active in a specified source location. We don't save the history in PCH (no need currently). Memory overhead is about sizeof(void*)*3*<number of macro definitions and #undefs>+<in-memory size of all #undef'd macros> I've run a test on a file composed of 109 .h files from boost 1.49 on x86-64 linux. Stats before this patch: *** Preprocessor Stats: 73222 directives found: 19171 #define. 4345 #undef. #include/#include_next/#import: 5233 source files entered. 27 max include stack depth 19210 #if/#ifndef/#ifdef. 2384 #else/#elif. 6891 #endif. 408 #pragma. 14466 #if/#ifndef#ifdef regions skipped 80023/451669/1270 obj/fn/builtin macros expanded, 85724 on the fast path. 127145 token paste (##) operations performed, 11008 on the fast path. Preprocessor Memory: 5874615B total BumpPtr: 4399104 Macro Expanded Tokens: 417768 Predefines Buffer: 8135 Macros: 1048576 #pragma push_macro Info: 0 Poison Reasons: 1024 Comment Handlers: 8 Stats with this patch: ... Preprocessor Memory: 7541687B total BumpPtr: 6066176 Macro Expanded Tokens: 417768 Predefines Buffer: 8135 Macros: 1048576 #pragma push_macro Info: 0 Poison Reasons: 1024 Comment Handlers: 8 In my test increase in memory usage is about 1.7Mb, which is ~28% of initial preprocessor's memory usage and about 0.8% of clang's total VMM allocation. As for CPU overhead, it should only be noticeable when iterating over all macros, and should mostly consist of couple extra dereferences and one comparison per macro + skipping of #undef'd macros. It's less trivial to measure, though, as the preprocessor consumes a very small fraction of compilation time. Reviewers: doug.gregor, klimek, rsmith, djasper Reviewed By: doug.gregor CC: cfe-commits, chandlerc Differential Revision: http://llvm-reviews.chandlerc.com/D28 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162810 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-21Use LLVM_BUILTIN_TRAP instead of lame volatile int traps.David Blaikie
(from a todo mentioned in r159469 & originally suggested by Chandler Carruth) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162302 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-21Screw around with ObjCRuntime some more, changing theJohn McCall
diagnostics for bad deployment targets and adding a few more predicates. Includes a patch by Jonathan Schleifer to enable ARC for ObjFW. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162252 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-17Switch PTH format from a 7 byte magic number to an 8 byte one, to avoidRichard Smith
misaligned reads throughout the file. Bump PTH format version to 10. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162076 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-13c: small refactoring of checking for __attribute__(const))Fariborz Jahanian
per Richard's comment. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161786 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-13c: make __has_attribute(const) work for constFariborz Jahanian
function attribute. // rdar://10253857 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161767 91177308-0d34-0410-b5e6-96231b3b80d8
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