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than once.
We can just re-use the one from HeaderFileInfoLookupTable.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176565 91177308-0d34-0410-b5e6-96231b3b80d8
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Previously we would return null for an out-of-date file. This inhibited ASTReader::ReadSLocEntry
from creating a FileID to recover gracefully in such a case.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176332 91177308-0d34-0410-b5e6-96231b3b80d8
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where the module was explicitly or implicitly imported in the local translation unit.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@174192 91177308-0d34-0410-b5e6-96231b3b80d8
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than DenseMaps and SmallPtrSets for module-visitation data. ~2.6%
speedup for modules.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@173081 91177308-0d34-0410-b5e6-96231b3b80d8
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This is a simpler sort, entirely automatic with the help of
llvm/utils/sort_includes.py -- no manual edits here.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@169238 91177308-0d34-0410-b5e6-96231b3b80d8
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as the include location of the main file of an imported module.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168061 91177308-0d34-0410-b5e6-96231b3b80d8
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The stat cache became essentially useless ever since we started
validating all file entries in the PCH.
But the motivating reason for removing it now is that it also affected
correctness in this situation:
-You have a header without include guards (using "#pragma once" or #import)
-When creating the PCH:
-The same header is referenced in an #include with different filename cases.
-In the PCH, of course, we record only one file entry for the header file
-But we cache in the PCH file the stat info for both filename cases
-Then the source files are updated and the header file is updated in a way that
its size and modification time are the same but its inode changes
-When using the PCH:
-We validate the headers, we check that header file and we create a file entry with its current inode
-There's another #include with a filename with different case than the previously created file entry
-In order to get its stat info we go through the cached stat info of the PCH and we receive the old inode
-because of the different inodes, we think they are different files so we go ahead and include its contents.
Removing the stat cache will potentially break clients that are attempting to use the stat cache
as a way of avoiding having the actual input files available. If that use case is important, patches are welcome
to bring it back in a way that will actually work correctly (i.e., emit a PCH that is self-contained, coping with
literal strings, line/column computations, etc.).
This fixes rdar://5502805
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@167172 91177308-0d34-0410-b5e6-96231b3b80d8
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manager block and input-file information in the control block. The
source manager entries now point back into the control block. Input
files are now lazily deserialized (if validation is disabled). Reduces
Cocoa's PCH by the ~70k I added when I introduced the redundancy in
r166251.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166429 91177308-0d34-0410-b5e6-96231b3b80d8
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block, so the input files are validated early on, before we've
committed to loading the AST file. This (accidentally) fixed a but
wherein the main file used to generate the AST file would *not* be
validated by the existing validation logic.
At the moment, this leads to some duplication of filenames between the
source manager block and input-file blocks, as well as validation
logic. This will be handled via an upcoming patch.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166251 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166229 91177308-0d34-0410-b5e6-96231b3b80d8
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module files.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166228 91177308-0d34-0410-b5e6-96231b3b80d8
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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
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of a module file.
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declarations of the current primary module.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@165046 91177308-0d34-0410-b5e6-96231b3b80d8
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delete.
It would be nice to use OwningPtr here, but DeclContextInfo is stored in a DenseMap.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154763 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149798 91177308-0d34-0410-b5e6-96231b3b80d8
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the direct serialization of the linked-list structure. Instead, use a
scheme similar to how we handle redeclarations, with redeclaration
lists on the side. This addresses several issues:
- In cases involving mixing and matching of many categories across
many modules, the linked-list structure would not be consistent
across different modules, and categories would get lost.
- If a module is loaded after the class definition and its other
categories have already been loaded, we wouldn't see any categories
in the newly-loaded module.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149112 91177308-0d34-0410-b5e6-96231b3b80d8
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generational scheme for identifiers that avoids searching the hash
tables of a given module more than once for a given
identifier. Previously, loading any new module invalidated all of the
previous lookup results for all identifiers, causing us to perform the
lookups repeatedly.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148412 91177308-0d34-0410-b5e6-96231b3b80d8
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chains, again. The prior implementation was very linked-list oriented, and
the list-splicing logic was both fairly convoluted (when loading from
multiple modules) and failed to preserve a reasonable ordering for the
redeclaration chains.
This new implementation uses a simpler strategy, where we store the
ordered redeclaration chains in an array-like structure (indexed based
on the first declaration), and use that ordering to add individual
deserialized declarations to the end of the existing chain. That way,
the chain mimics the ordering from its modules, and a bug somewhere is
far less likely to result in a broken linked list.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148222 91177308-0d34-0410-b5e6-96231b3b80d8
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chains. The previous implementation relied heavily on the declaration
chain being stored as a (circular) linked list on disk, as it is in
memory. However, when deserializing from multiple modules, the
different chains could get mixed up, leading to broken declaration chains.
The new solution keeps track of the first and last declarations in the
chain for each module file. When we load a declaration, we search all
of the module files for redeclarations of that declaration, then
splice together all of the lists into a coherent whole (along with any
redeclarations that were actually parsed).
As a drive-by fix, (de-)serialize the redeclaration chains of
TypedefNameDecls, which had somehow gotten missed previously. Add a
test of this serialization.
This new scheme creates a redeclaration table that is fairly large in
the PCH file (on the order of 400k for Cocoa.h's 12MB PCH file). The
table is mmap'd in and searched via a binary search, but it's still
quite large. A future tweak will eliminate entries for declarations
that have no redeclarations anywhere, and should
drastically reduce the size of this table.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146841 91177308-0d34-0410-b5e6-96231b3b80d8
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a standard global/local scheme, so that submodule definitions will
eventually be able to refer to submodules in other top-level
modules. We'll need this functionality soonish.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145549 91177308-0d34-0410-b5e6-96231b3b80d8
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library, since modules cut across all of the libraries. Rename
serialization::Module to serialization::ModuleFile to side-step the
annoying naming conflict. Prune a bunch of ModuleMap.h includes that
are no longer needed (most files only needed the Module type).
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145538 91177308-0d34-0410-b5e6-96231b3b80d8
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submodules. This information will eventually be used for name hiding
when dealing with submodules. For now, we only use it to ensure that
the module "key" returned when loading a module will always be a
module (rather than occasionally being a FileEntry).
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145497 91177308-0d34-0410-b5e6-96231b3b80d8
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touching anyway)
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144171 91177308-0d34-0410-b5e6-96231b3b80d8
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Introduce a FILE_SORTED_DECLS [de]serialization record that contains
a file sorted array of file-level DeclIDs in a PCH/Module.
The rationale is to allow "targeted" deserialization of decls inside
a range of a source file.
Cocoa PCH increased by 0.8%
Difference of creation time for Cocoa PCH is below the noise level.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@143238 91177308-0d34-0410-b5e6-96231b3b80d8
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array
of decl bit offsets.
This allows us to easily get at the location of a decl without deserializing it.
It increases size of Cocoa PCH by only 0.2%.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@143123 91177308-0d34-0410-b5e6-96231b3b80d8
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which will do a binary search and return a pair of iterators
for preprocessed entities in the given source range.
Source ranges of preprocessed entities are stored twice currently in
the PCH/Module file but this will be fixed in a subsequent commit.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@140058 91177308-0d34-0410-b5e6-96231b3b80d8
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-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
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The initial incentive was to fix a crash when PCH chaining categories
to an interface, but the fix was done in the "modules way" that I hear
is popular with the kids these days.
Each module stores the local chain of categories and we combine them
when the interface is loaded. We also warn if non-dependent modules
introduce duplicate named categories.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@138926 91177308-0d34-0410-b5e6-96231b3b80d8
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AST file, rather than waiting until we finish loading the top-level
AST file.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@138585 91177308-0d34-0410-b5e6-96231b3b80d8
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and .cpp files, since ASTReader.cpp was getting way too large. No
functionality change.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@138582 91177308-0d34-0410-b5e6-96231b3b80d8
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