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2011-09-15Comment what's going on when we compile a moduleDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139837 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-15Detect cyclic module dependencies in a manner that is rather moreDouglas Gregor
graceful than running out of stack space. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139833 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-15Eliminate the list of modules from the preprocessor options. This wasDouglas Gregor
used back when we had an -import-module command-line option, but it's no longer used (or useful). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139829 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-15Eliminate the unused -create-module cc1-level optionDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139827 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-15When we load the first module, make sure that we wire up the ASTConsumer to ↵Douglas Gregor
the newly-created ASTReader. This makes sure that CodeGen sees the declarations it is interested in git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139824 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-15[PCH] Overhaul how preprocessed entities are [de]serialized.Argyrios Kyrtzidis
-Use an array of offsets for all preprocessed entities -Get rid of the separate array of offsets for just macro definitions; for references to macro definitions use an index inside the preprocessed entities array. -Deserialize each preprocessed entity lazily, at first request; not in bulk. Paves the way for binary searching of preprocessed entities that will offer efficiency and will simplify things on the libclang side a lot. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139809 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-14Make -E work with module importsDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139750 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-14Encode the module hash in base-36, to reduce the length of the strings a bitDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139696 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-13Assert that the module hash produced after stripping away non-modular ↵Douglas Gregor
options is the same as the module hash before stripping those options. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139663 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-13For modules, use a hash of the compiler version, language options, andDouglas Gregor
target triple to separate modules built under different conditions. The hash is used to create a subdirectory in the module cache path where other invocations of the compiler (with the same version, language options, etc.) can find the precompiled modules. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139662 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-13When building a module on-demand, clear out the "non-modular" languageDouglas Gregor
and preprocessor options (such as macro definitions) first. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139638 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-13Switch LangOptions over to a .def file that describes header of theDouglas Gregor
language options. Use that .def file to declare the LangOptions class and initialize all of its members, eliminating a source of annoying initialization bugs. AST serialization changes are next up. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139605 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-13When compiling a module on-demand, re-use the diagnostics clientDouglas Gregor
already provided. This required a little bit of clean-up in the way that VerifyDiagnosticsClient managed ownership of its underlying "primary" client, because now it will no longer always take ownership. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139570 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-12When an import statement fails to find a module in the module cache,Douglas Gregor
but there is a corresponding umbrella header in a framework, build the module on-the-fly so it can be immediately loaded at the import statement. This is very much proof-of-concept code, with details to be fleshed out over time. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139558 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-12Introduce a cc1-level option to provide the path to the module cache,Douglas Gregor
where the compiler will look for module files. Eliminates the egregious hack where we looked into the header search paths for modules. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139538 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-12[libclang] In ASTUnit::Parse copy the CompilerInvocation object instead ofArgyrios Kyrtzidis
modifying directly for the preamble. This avoids an awful, hard to find, bug where "PreprocessorOpts.DisablePCHValidation = true" would be persistent for subsequent reparses of the translation unit which would result in defines, present in command-line but not in the PCH, being ignored. Fixes rdar://9615399. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139512 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-12Only predefine the __EXCEPTIONS macro if C++ exceptions are turned on.Douglas Gregor
Only predefine the OBJC_ZEROCOST_EXCEPTIONS macro if Objective-C exceptions are turned on. Fixes PR10910. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139496 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-10Kill of the Decl::PCHLevel field entirely. We now only need to knowDouglas Gregor
whether a Decl was deserialized from an AST file (any AST file). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139438 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-09Treat the weak export of block runtime symbols as a deployment-targetJohn McCall
feature akin to the ARC runtime checks. Removes a terrible hack where IR gen needed to find the declarations of those symbols in the translation unit. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139404 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-07Extract the emission of the diagnostic's location into a separateChandler Carruth
function. This is really the beginning of the second phase of refactorings here. The end goal is to have (roughly) three interfaces: 1) Base class to format a single diagnostic suitable for display on the console. 2) Extension of the base class which also displays a caret diagnostic suitable for display on the console. 3) An adaptor that implements the DiagnosticClient by delegating to #1 and/or #2 as appropriate. Once we have these, things like libclang's formatDiagnostic can use #1 and #2 to provide really well formatted (and consistently formatted!) textual formatting of diagnostics. Getting there is going to be quite a bit of shuffling. I'm basically sketching out where the interface boundaries can be drawn for #1 and #2 within the existing classes. That lets me shuffle with a minimum of fuss and delta. Once that's done, and any of the related interfaces that need to change are updated, I'll hoist these into separate headers and re-implement libclang in terms of their interfaces. Long WIP, but comments at each step welcome. =D git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139228 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-07Move the HilightRange method from TextDiagnosticPrinter down toChandler Carruth
CaretDiagnostic. It's completely generic, with nothing to do with the diagnostic client or info APIs. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139227 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-07Hoist the tab expansion into a helper function.Chandler Carruth
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139226 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-07Don't compute the same line number in two places, once inside a loop.Chandler Carruth
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139225 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-07Switch the CharSourceRange array to a small vector. The array wasChandler Carruth
a stack array of a magical size with an assert() that we never overflowed it. That seems incredibly risky. We also have a very nice API for bundling up a vector we expect to usually have a small size without loss of functionality or security if the size is excessive. The fallout is to remove the last pointer+size parameter pair that are traced through the recursive caret diagnostic emission. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139217 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-06Remove the doxyment for this now defunct parameter.Chandler Carruth
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139197 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-06Don't recompute the presumed loc twice in 5 lines of code... Spotted byChandler Carruth
inspection. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139196 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-06Use ArrayRef for the fixit hint array rather than a pointer and a size.Chandler Carruth
Clean up loops over the hints to use the more idiomatic iterator form in LLVM and Clang. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139195 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-06Hoist the construction of the FixItHint line into a member function withChandler Carruth
a defined interface. This isn't as nice as the previous one, but should get better as I push through better data types in all these functions. Also, I'm hoping to pull some aspects of this out into a common routine (such as tab expansion). Again, WIP, comments welcome as I'm going through. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139190 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-06Add missing dependencyPeter Collingbourne
Spotted by Ninja. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139129 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-04Fix Lexer::ComputePreamble when MaxLines parameter is non-zero.Argyrios Kyrtzidis
The function was only counting lines that included tokens and not empty lines, but MaxLines (mainly initiated to the line where the code-completion point resides) is a count of overall lines (even empty ones). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139085 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-02Hoist the emission of parseable fixits into a helper method, simplifyingChandler Carruth
and reducing indentation through the clever use of early exits. ;] git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139001 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-02Always construct an ASTReader with a non-NULL ASTContext andDouglas Gregor
Preprocessor, eliminating the constructor that was used by ASTUnit (which didn't provide an ASTContext or Prepreprocessor). Ensuring that both objects are non-NULL will simplify module loading (but none of that is done yet). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@138986 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-02Extend the ASTContext constructor to delay the initialization ofDouglas Gregor
builtin types (When requested). This is another step toward making ASTUnit build the ASTContext as needed when loading an AST file, rather than doing so after the fact. No actual functionality change (yet). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@138985 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-01Allow the preprocessor to be constructed without performing target-Douglas Gregor
and language-specific initialization. Use this to allow ASTUnit to create a preprocessor object *before* loading the AST file. No actual functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@138983 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-01Teach ASTContext and Preprocessor to hold on to references to the sameDouglas Gregor
LangOptions, rather than making distinct copies of LangOptions. Granted, LangOptions doesn't actually get modified, but this will eventually make it easier to construct ASTContext and Preprocessor before we know all of the LangOptions. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@138959 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-01Modules hide macro definitions by default, so that silly things likeDouglas Gregor
include guards don't show up as macro definitions in every translation unit that imports a module. Macro definitions can, however, be exported with the intentionally-ugly #__export_macro__ directive. Implement this feature by not even bothering to serialize non-exported macros to a module, because clients of that module need not (should not) know that these macros even exist. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@138943 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-31Create a CaretDiagnostic class to hold the logic for emittingChandler Carruth
(unsurprisingly) caret diagnostics. This is designed to bring some organization to the monstrous EmitCaretDiagnostic function, and allow factoring it more easily and with less mindless parameter passing. Currently this just lifts the existing function into a method, and splits off the obviously invariant arguments to be class members. No functionality is changed, and there are still lots of warts to let existing code continue functioning as-is. Definitely WIP, more cleanups to follow. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@138921 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-31Sink all of the include stack printing logic into its member function.Chandler Carruth
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@138920 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-31Switch the "no module found" default-fatal warning to a default-fatal error.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@138909 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-30Change err_pp_file_not_found back to an Error; when it's a Warning, we ↵Eli Friedman
suppress it in system headers. And it is not a good idea to suppress it in system headers. (This was originally changed in r134996 to implement -MG.) Fixes <rdar://10041960>. And also brings down the number of warnings without a flag by one :) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@138842 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-29Some minor updates to the Linux search path handling for Slackware. Patch ↵Eli Friedman
by Will Dietz. PR10692. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@138753 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-27objective-c: Treat top-level objective-c declarationsFariborz Jahanian
, such as list of forward @class decls, in a DeclGroup node. Deal with its consequence throught clang. This is in preparation for more Sema work ahead. // rdar://8843851. Feel free to reverse if it breaks something important and I am unavailable. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@138709 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-27Remove the -import-module option. It's no longer usefulDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@138681 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-26Introduce support for a simple module import declaration, whichDouglas Gregor
loads the named module. The syntax itself is intentionally hideous and will be replaced at some later point with something more palatable. For now, we're focusing on the semantics: - Module imports are handled first by the preprocessor (to get macro definitions) and then the same tokens are also handled by the parser (to get declarations). If both happen (as in normal compilation), the second one is redundant, because we currently have no way to hide macros or declarations when loading a module. Chris gets credit for this mad-but-workable scheme. - The Preprocessor now holds on to a reference to a module loader, which is responsible for loading named modules. CompilerInstance is the only important module loader: it now knows how to create and wire up an AST reader on demand to actually perform the module load. - We search for modules in the include path, using the module name with the suffix ".pcm" (precompiled module) for the file name. This is a temporary hack; we hope to improve the situation in the future. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@138679 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-26[driver] Add -mglobal-merge/-mno-global-merge machine options to ↵Chad Rosier
enable/disable merging of globals during codegen. Fixes <rdar://problem/10017909>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@138612 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-25Eliminate the -chained-pch flag and all of the frontend and libclang options ↵Douglas Gregor
associated with it. Chained PCH is the only way to build a PCH file that includes another PCH file git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@138597 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-25Remove the Chaining argument from the PCH/module generator. It's no longer usedDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@138596 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-25Introduce a -cc1 option "-emit-module", that creates a binary moduleDouglas Gregor
from the given source. -emit-module behaves similarly to -emit-pch, except that Sema is somewhat more strict about the contents of -emit-module. In the future, there are likely to be more interesting differences. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@138595 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-25Make Lexer::ComputePreamble accept a LangOptions parameter, otherwise it may beArgyrios Kyrtzidis
out-of-sync how a file is compiled. Patch by Matthias Kleine! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@138580 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-24Reset FirstID (first diagnostic's file ID) to allow for invocations of the ↵Axel Naumann
VerifyDiagnosticsClient on several input files. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@138434 91177308-0d34-0410-b5e6-96231b3b80d8