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2013-01-23[PCH] Temporarily disable the "ambiguous macro" warning that is currently ↵Argyrios Kyrtzidis
bogus with a PCH that redefined a macro without undef'ing it first. Proper reconstruction of the macro info history from modules will properly fix this in subsequent commits. rdar://13016031 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@173281 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-17Add a comment for DanielDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@172695 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-17[IRgen] Update modules autolink metadata to use module flags (as now specifiedDaniel Dunbar
in the LangRef). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@172692 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-17clang/test/Modules/compiler_builtins.m: Mark this as XFAIL:win32 for now. ↵NAKAMURA Takumi
Investigating. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@172689 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-17Treat hidden Objective-C protocol definitions as if they wereDouglas Gregor
undefined, and don't find methods or protocols within those protocol definitions. This completes <rdar://problem/10634711>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@172686 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-16Rework the traversal of Objective-C categories and extensions toDouglas Gregor
consider (sub)module visibility. The bulk of this change replaces myriad hand-rolled loops over the linked list of Objective-C categories/extensions attached to an interface declaration with loops using one of the four new category iterator kinds: visible_categories_iterator: Iterates over all visible categories and extensions, hiding any that have their "hidden" bit set. This is by far the most commonly used iterator. known_categories_iterator: Iterates over all categories and extensions, ignoring the "hidden" bit. This tends to be used for redeclaration-like traversals. visible_extensions_iterator: Iterates over all visible extensions, hiding any that have their "hidden" bit set. known_extensions_iterator: Iterates over all extensions, whether they are visible to normal name lookup or not. The effect of this change is that any uses of the visible_ iterators will respect module-import visibility. See the new tests for examples. Note that the old accessors for categories and extensions are gone; there are *Raw() forms for some of them, for those (few) areas of the compiler that have to manipulate the linked list of categories directly. This is generally discouraged. Part two of <rdar://problem/10634711>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@172665 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-16Teach global selector lookup to ignore hidden methods, which occurDouglas Gregor
when the methods are declared in a submodule that has not yet been imported. Part of <rdar://problem/10634711>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@172635 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-16Add -fmodules-autolink/-fno-modules-autolink (defaults to on) so thatDouglas Gregor
users can explicitly enable/disable modules autolinking. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@172592 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-14Topologically sort the link options generated for modules based onDouglas Gregor
module-import dependencies, so we'll get the link order correct for those silly linkers that need it. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@172459 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-14When forming the link options for an imported module, also include theDouglas Gregor
link options for the modules it imports. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@172448 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-14Switch autolinking metadata format over to actual linker options, e.g.,Douglas Gregor
!0 = metadata !{metadata !"-lautolink"} !1 = metadata !{metadata !"-framework", metadata !"autolink_framework"} referenced from llvm.module.linkoptions, e.g., !llvm.module.linkoptions = !{!0, !1, !2, !3} This conceptually moves the logic for figuring out the syntax the linker will accept from LLVM into Clang. Moreover, it makes it easier to support MSVC's #pragma comment(linker, "some option") in the future, should anyone care to do so. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@172441 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-14Infer "link" lines for top-level frameworks. Essentially, a frameworkDouglas Gregor
will have a shared library with the same name as its framework (and no suffix!) within its .framework directory. Detect this both when inferring the whole top-level framework and when parsing a module map. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@172439 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-14Implement parsing, AST, (de-)serialization, and placeholder globalDouglas Gregor
metadata for linking against the libraries/frameworks for imported modules. The module map language is extended with a new "link" directive that specifies what library or framework to link against when a module is imported, e.g., link "clangAST" or link framework "MyFramework" Importing the corresponding module (or any of its submodules) will eventually link against the named library/framework. For now, I've added some placeholder global metadata that encodes the imported libraries/frameworks, so that we can test that this information gets through to the IR. The format of the data is still under discussion. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@172437 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-12Provide Decl::getOwningModule(), which determines the (sub)module inDouglas Gregor
which a particular declaration resides. Use this information to customize the "definition of 'blah' must be imported from another module" diagnostic with the module the user actually has to import. Additionally, recover by importing that module, so we don't complain about other names in that module. Still TODO: coming up with decent Fix-Its for these cases, and expand this recovery approach for other name lookup failures. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@172290 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-09When name lookup for a redeclaration finds declarations that are knownDouglas Gregor
(because they are part of some module) but have not been made visible (because they are in a submodule that wasn't imported), filter out those declarations unless both the old declaration and the new declaration have external linkage. When one or both has internal linkage, there should be no conflict unless both are imported. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@171925 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-04Add the module name to the 'incomplete umbrella header' warning.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@171497 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-04Remove -Wmodule-build; it was a dumb idea anyway. <rdar://problem/12957525>Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@171478 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-12clang/test: Suppress two tests on win32 for now, since, not sure, in r169829 ↵NAKAMURA Takumi
to r169831. "ansi-escape-sequences" is easy convenient to exclude win32. Please be patient. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@169945 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-11Don't use 'touch' in this test; it may be the cause of Windows-related failures.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@169922 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-11Use @import rather than @__experimental_modules_import, since theDouglas Gregor
latter is rather a mess to type. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@169919 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-05Fix an egregiously broken test. This pattern doesn't work:Richard Smith
RUN: a RUN: b || true lit expands it to a && b || true, and the || true applies to both commands (thus ignoring failures in 'a')! This is PR10867 again. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@169434 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-05test/Modules/build-fail-notes.m: Tweak to unbreak Win32 hosts to relax ↵NAKAMURA Takumi
expressions, for now. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@169375 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-05PR14049: Don't say "expanded from macro 'foo'" when 'foo' just happens to beRichard Smith
the LHS of a token paste. Use "expanded from here" instead when we're not sure it's actually a macro. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@169373 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-30Fix test for Windows path separatorsDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@169058 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-30Teach the serialized diagnostic writer to clone() itself, sharingDouglas Gregor
state so that all of the various clones end up rendering their diagnostics into the same serialized-diagnostics file. This is important when we actually want failures during module build to be reported back to the translation unit that tried to import the not-yet-built or out-of-date module. <rdar://problem/12565727> git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@169057 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-30When we're emitting a diagnostic with a source location in an importedDouglas Gregor
module, provide a module import stack similar to what we would get for an include stack, e.g., In module 'DependsOnModule' imported from build-fail-notes.m:4: In module 'Module' imported from DependsOnModule.framework/Headers/DependsOnModule.h:1: Inputs/Module.framework/Headers/Module.h:15:12: note: previous definition is here @interface Module <rdar://problem/12696425> git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@169042 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-30When an error occurs while building a module on demand, provide "WhileDouglas Gregor
building module 'Foo' imported from..." notes (the same we we provide "In file included from..." notes) in the diagnostic, so that we know how this module got included in the first place. This is part of <rdar://problem/12696425>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@169021 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-29Keep track of modules that have failed to build. If we encounter anDouglas Gregor
import of that module elsewhere, don't try to build the module again: it won't work, and the experience is quite dreadful. We track this information somewhat globally, shared among all of the related CompilerInvocations used to build modules on-the-fly, so that a particular Clang instance will only try to build a given module once. Fixes <rdar://problem/12552849>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168961 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-15If an excluded header does not exist, just ignore itDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168077 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-07When loading a module fails because it is out of date, rebuild thatDouglas Gregor
module in place. <rdar://problem/10138913> git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@167539 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-06Introduce inferred framework modules into the module map file,Douglas Gregor
allowing a module map to be placed one level above the '.framework' directories to specify that all .frameworks within that directory can be inferred as framework modules. One can also specifically exclude frameworks known not to work. This makes explicit (and more restricted) behavior modules have had "forever", where *any* .framework was assumed to be able to be built as a module. That's not necessarily true, so we white-list directories (with exclusions) when those directories have been audited. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@167482 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-05Have the parser initialize Sema before it consumes the firstDouglas Gregor
token. This is important because the first token could actually be after an #include that triggers a module import, which might use either Sema or the AST consumer before it would have been initialized. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@167423 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-05Make cpuid.h actually work with -std=c99 <rdar://problem/12552716>.Douglas Gregor
While we're here, extend the module map to cover most of the newly-added instrinsic headers. Only wmmintrin.h is missing, because it needs to be split into AES/PCLMUL subheaders (as a separate commit). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@167398 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-25Correct test inovocations to use %clang_cc1 rather than direct invocation ↵David Tweed
(so that it can have additional options set when trying to debug issues causing regressions). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166681 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-19Prior to adding the new "expected-no-diagnostics" directive to ↵Andy Gibbs
VerifyDiagnosticConsumer, make the necessary adjustment to 580 test-cases which will henceforth require this new directive. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166280 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
2012-10-12Add missing header from 165821Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@165822 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
2012-10-11Deserialize 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
2012-10-09When we load a function or method body from an AST file, we checkDouglas Gregor
whether that function/method already has a body (loaded from some other AST file), as introduced in r165137. Delay this check until after the redeclaration chains have been wired up. While I'm here, make the loading of method bodies lazy. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@165513 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-02Add redecls into their lexical DeclContext: this is what they assert on, and ↵Axel Naumann
the merging should have set it correctly. This is especially relevant for templatedDecls that might be injected (and thus have their DeclContext set to) somewhere completely different. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@165005 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-02Only those InterestingDecls that got added to the AST should be passed to ↵Axel Naumann
the ASTConsumer. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@165001 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-02Merge pending instantiations instead of overwriting existing ones.Axel Naumann
Check whether a pending instantiation needs to be instantiated (or whether an instantiation already exists). Verify the size of the PendingInstantiations record (was only checking size of existing PendingInstantiations). Migrate Obj-C++ part of redecl-merge into separate test, now that this is growing. templates.mm: test that CodeGen has seen exactly one definition of template instantiations. redecl-merge.m: use "@" specifier for expected-diagnostics. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164993 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-01The Redeclarable part of named decls is read before their name.Axel Naumann
Lookup can nevertheless find them due to the serialized lookup table. For instance when reading a template decl's templatedDecl, it will search for existing decls that it could be a redeclaration of, and find the half-read template decl. Thus there is no point in asserting the names of decls. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164932 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-01Also merge template redeclarations.Axel Naumann
Don't require specializations (of existing and read template) to be unique. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164931 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-01Bring ASTReader and Writer into sync for the case where a canonical template ↵Axel Naumann
specialization was written, which is non-canonical at the time of reading: force the reading of the ClassTemplateDecl if it was written. The easiest way out is to store whether the decl was canonical at the time of writing. Add test. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164927 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
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