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2011-11-30Teach the preprocessor how to handle module import declarations thatDouglas Gregor
involve submodules (e.g., importing std.vector), rather than always importing the top-level module. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145478 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-30Switch the module-loading interfaces and parser from a simpleDouglas Gregor
top-level module name to a module path (e.g., std.vector). We're still missing a number of pieces for this actually to do something. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145462 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-29Escape strings when printing module maps, for silly operating systemsDouglas Gregor
that use \ as a separator. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145439 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-29Switch on-demand module building over to use module maps, always. WhenDouglas Gregor
we infer the module map, we'll just print the module map to a temporary file and generate the module using that. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145436 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-29Teach the module import mechanism how to rebuild modules expressed viaDouglas Gregor
module map, rather than assuming that there is an umbrella header. This allows us to automatically build umbrella-less modules. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145415 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-29Expose the printing of module maps as part of the ModuleMap::ModuleDouglas Gregor
interface. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145411 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-28When attempting to load a module that is not in the module cache,Douglas Gregor
return the module itself (in the module map) rather than returning the umbrella header used to build the module. While doing this, make sure that we're inferring modules for frameworks to build that module. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145310 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-23Remove an assertion that is not valid if we cancel parsing.Argyrios Kyrtzidis
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145108 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-22Remove assert from hot code path and add a clarifying comment.Benjamin Kramer
The assert wasn't adding much value but slowed down Release+Asserts builds. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145082 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-22Lexer: Don't throw away the hard work SSE did to find a slash.Benjamin Kramer
We can reuse the information and avoid looping over all the bytes again. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145070 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-22implement __has_feature(address_sanitizer); also use ↵Kostya Serebryany
LangOpts.AddressSanitizer instead of CodeGenOpts.AddressSanitizer git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145054 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-20Allow preprocessor callbacks to recover from a "file not found" error,Douglas Gregor
from Jason Haslam! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145012 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-17When making a suggestion regarding which module to load rather thanDouglas Gregor
preprocess/parse a header, report back with an actual module (which may be a submodule) rather than just the name of the module. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144925 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-17Add the notion of "framework" modules to module maps. FrameworkDouglas Gregor
modules (obviously) describe frameworks, and understand the header layout of frameworks. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144921 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-17Actually free memory for the module mapsDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144880 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-17When we're loading a framework header, first try to turn the frameworkDouglas Gregor
into a module. This module can either be loaded from a module map in the framework directory (which isn't quite working yet) or inferred from an umbrella header (which does work, and replaces the existing hack). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144877 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-16A module with an umbrella header assumes that all of the headers inDouglas Gregor
the umbrella header's directory and its subdirectories are part of the module (that's why it's an umbrella). Make sure that these headers are considered to be part of the module for lookup purposes. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144859 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-16Add support for building a module from a module map to the -cc1Douglas Gregor
interface. This is currently limited to modules with umbrella headers. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144736 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14Fix a regression in wide character codegen. See PR11369.Nico Weber
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144521 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-13Silence unused variable warning.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144500 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-12Implement a minor optimization when loading module maps to satisfy aDouglas Gregor
module import: don't re-check for a loaded module unless we've actually loaded a new module map file. Already-loaded module map files aren't interesting. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144435 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-12When searching for a module, speculatively load module maps to see ifDouglas Gregor
the module is described in one of the module maps in a search path or in a subdirectory off the search path that has the same name as the module we're looking for. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144433 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-11Teach the search for modules to consider modules described by a moduleDouglas Gregor
map, so long as they have an umbrella header. This makes it possible to introduce a module map + umbrella header for a given set of headers, to turn it into a module. There are two major deficiencies here: first, we don't go hunting for module map files when we just see a module import (so we won't know about the modules described therein). Second, we don't yet have a way to build modules that don't have umbrella headers, or have incomplete umbrella headers. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144424 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-11Wire up the mapping from header files mentioned in module maps over toDouglas Gregor
the corresponding (top-level) modules. This isn't actually useful yet, because we don't yet have a way to build modules out of module maps. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144410 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-11Resolve the header files named in module map "header" and "umbrella"Douglas Gregor
declarations to actual files. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144408 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-11Introduce basic support for parsing module map files.Douglas Gregor
Module map files provide a way to map between headers and modules, so that we can layer a module system on top of existing headers without changing those headers at all. This commit introduces the module map file parser and the module map that it generates, and wires up the module map file parser so that we'll automatically find module map files as part of header search. Note that we don't yet use the information stored in the module map. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144402 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-11I predict that HeaderSearch will need the ability to generateDouglas Gregor
diagnostics in the future. Make it so. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144347 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-05Fix one last place where we weren't writing into a string literal consistently.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@143769 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-02Use native endianness for writing out character escapes to the result buffer ↵Eli Friedman
for string literal parsing. No functional change on little-endian architectures; should fix test failures on PPC. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@143585 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-01Perform proper conversion for strings encoded in the source file as UTF-8. ↵Eli Friedman
(For now, we are assuming the source character set is always UTF-8; this can be easily extended if necessary.) Tests will be coming up in a subsequent commit. Patch by Seth Cantrell. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@143416 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-01Add __has_feature(cxx_raw_string_literals) andDouglas Gregor
__has_feature(cxx_unicode_literals), from Michel Morin! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@143412 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-01Add __has_feature(cxx_defaulted_functions) for querying "defaultedDouglas Gregor
functions", from Michel Morin! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@143411 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-27Make the loading of information attached to an IdentifierInfo from anDouglas Gregor
AST file more lazy, so that we don't eagerly load that information for all known identifiers each time a new AST file is loaded. The eager reloading made some sense in the context of precompiled headers, since very few identifiers were defined before PCH load time. With modules, however, a huge amount of code can get parsed before we see an @import, so laziness becomes important here. The approach taken to make this information lazy is fairly simple: when we load a new AST file, we mark all of the existing identifiers as being out-of-date. Whenever we want to access information that may come from an AST (e.g., whether the identifier has a macro definition, or what top-level declarations have that name), we check the out-of-date bit and, if it's set, ask the AST reader to update the IdentifierInfo from the AST files. The update is a merge, and we now take care to merge declarations before/after imports with declarations from multiple imports. The results of this optimization are fairly dramatic. On a small application that brings in 14 non-trivial modules, this takes modules from being > 3x slower than a "perfect" PCH file down to 30% slower for a full rebuild. A partial rebuild (where the PCH file or modules can be re-used) is down to 7% slower. Making the PCH file just a little imperfect (e.g., adding two smallish modules used by a bunch of .m files that aren't in the PCH file) tips the scales in favor of the modules approach, with 24% faster partial rebuilds. This is just a first step; the lazy scheme could possibly be improved by adding versioning, so we don't search into modules we already searched. Moreover, we'll need similar lazy schemes for all of the other lookup data structures, such as DeclContexts. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@143100 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-25[PCH] When visiting preprocessed entities, make it possible to avoid ↵Argyrios Kyrtzidis
deserializing preprocessed entities that are #included in the range that we are interested. This is useful when we are interested in preprocessed entities of a specific file, e.g when we are annotating tokens. There is also an optimization where we cache the last result of PreprocessingRecord::getPreprocessedEntitiesInRange and we re-use it if there is a call with the same range as before. rdar://10313365 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@142887 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-18Add a __has_feature check for arc_cf_code_audited.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@142423 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-18Argyrios says this change is required for safety under PTH.John McCall
Me, I believe him. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@142327 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-18Fix several bugs with #pragma clang arc_cf_code_audited and macros.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@142324 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-17Move about 20 random diagnostics under -W flags. Patch by Ahmed Charles!Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@142284 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-17For modules, all macros that aren't include guards are implicitlyDouglas Gregor
public. Add a __private_macro__ directive to hide a macro, similar to the __module_private__ declaration specifier. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@142188 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-15-Wc++98-compat warnings for the lexer.Richard Smith
This also adds a -Wc++98-compat-pedantic for warning on constructs which would be diagnosed by -std=c++98 -pedantic (that is, it warns even on C++11 features which we enable by default, with no warning, in C++98 mode). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@142034 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-14Add c_alignas and cxx_alignas featuresPeter Collingbourne
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@142020 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-14Add a preprocessor callback that is invoked every time the 'defined'Douglas Gregor
operator is seen, from Jason Haslam! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@141926 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-12Implement built-in macro '__has_warning', which allows one to query if a ↵Ted Kremenek
warning flag is valid. Fixes <rdar://problem/10263428>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@141802 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-12We do parse hexfloats in C++11; make it actually work.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@141798 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-12Handle the case where preprocessor entities are not received in order,Argyrios Kyrtzidis
fixes http://llvm.org/PR11120 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@141788 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-12Handle Perforce-style conflict markers like normal conflict markers. PerforceRichard Smith
swaps over the <<<< and >>>> markers, and uses shorter markers than traditional tools. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@141751 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-11Add a -Wc++0x-compat warning for C++11 keywords used as identifiers when inRichard Smith
C++98 mode. Only the first occurrence of each keyword will produce a warning. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@141700 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-11For the FileChanged Preprocessor callback, when exiting a file, pass its FileID.Argyrios Kyrtzidis
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@141681 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-10A couple random preprocessor changes that got ported from C99 to C++11.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@141596 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-03Fixed exapnsion range for # and ##.Abramo Bagnara
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@141012 91177308-0d34-0410-b5e6-96231b3b80d8
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