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2009-04-27add an abbreviation for common PARM_VAR_DECL. All but 9 of the Chris Lattner
parm var decls in leopard cocoa.h end up using this abbreviation, which shrinks the bitcode file by about 50K: 7217736->7167120. Before: Block ID #12 (DECLS_BLOCK): Num Instances: 1 Total Size: 2.23595e+07b/2.79494e+06B/698736W % of file: 38.7233 Num SubBlocks: 0 Num Abbrevs: 0 Num Records: 139387 % Abbrev Recs: 0 After: Block ID #12 (DECLS_BLOCK): Num Instances: 1 Total Size: 2.02405e+07b/2.53006e+06B/632516W % of file: 35.301 Num SubBlocks: 0 Num Abbrevs: 1 Num Records: 139387 % Abbrev Recs: 19.2902 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70199 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-27Load most of the source manager's information lazily from the PCHDouglas Gregor
file. In particular, only eagerly load source location entries for files and for the predefines buffer. Other buffers and macro-instantiation source location entries are loaded lazily. With the Cocoa-prefixed "Hello, World", we only load 815/26555 source location entities. This halves the amount of user time we spend in this "Hello, World" program with -fsyntax-only (down to .007s). This optimization is part 1 of 2 for the source manager. This eliminates most of the user time in loading a PCH file. We still spend too much time initialize File structures (especially in the calls to stat), so we need to either make the loading of source location entries for files lazy or import the stat cache from the PTH implementation. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70196 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-27unclone SavedStreamPositionChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70192 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-27read all decls (and attributes and stmts/exprs referenced by the decl)Chris Lattner
from the DeclsCursor. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70190 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-27rename GetStmt -> GetDeclStmt to make it clear that the stmt readChris Lattner
is part of a decl. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70189 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-27change the interface to ReadStmt to force clients to pass a cursor in to ↵Chris Lattner
read from. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70188 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-27split decl reading out to its own PCHReaderDecl.cpp file.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70187 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-27split stmt/expr deserialization out to PCHReaderStmt.cppChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70186 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-27Set up DeclsCursor.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70173 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-27fix a comment by starting stmts/exprs after types and decls.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70171 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-26make llvm-bcanalyzer dump out PCH files symbolically. We should probablyChris Lattner
eventually get an option to turn this off, but it is nice for looking at statistics. For example, the types block now prints: Block ID #11 (TYPES_BLOCK_ID): Num Instances: 1 Total Size: 895100b/111888B/27971.9W % of file: 1.55801 Num SubBlocks: 0 Num Abbrevs: 0 Num Records: 14899 % Abbrev Recs: 0 Code Histogram: 5478 TYPE_FUNCTION_PROTO 2683 TYPE_TYPEDEF 2460 TYPE_POINTER 2047 TYPE_ENUM 1553 TYPE_RECORD 283 TYPE_CONSTANT_ARRAY 274 TYPE_OBJC_INTERFACE 76 TYPE_INCOMPLETE_ARRAY 10 TYPE_VECTOR 9 TYPE_OBJC_QUALIFIED_ID 5 TYPE_FUNCTION_NO_PROTO 5 TYPE_EXT_QUAL 3 TYPE_TYPEOF_EXPR git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70166 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-26Some fixes for PCH (de-)serialization of Objective-C AST nodes:Douglas Gregor
- Deal with the Receiver/ClassInfo shared storage in ObjCMessageExpr - Implement PCH support for ImplicitParamDecl - Fix the handling of the body of an ObjCMethodDecl - Several cast -> cast_or_null fixes - Make Selector::getIdentifierInfoForSlot work for 1-argument, NULL selectors. - Make Selector::getAsString() work with NULL selectors. - Fix the names of VisitObjCAtCatchStmt and VisitObjCAtFinallyStmt in the PCH reader and writer; these were never getting called. At this point, all of the pch-test tests pass for C and Objective-C. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70163 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-26Adjust to LLVM API changes that went into r70157.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70158 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-26Add PCH read/write support for ObjC statements.Steve Naroff
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70143 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-26When writing a PCH file, write multiple type and declaration blocks asDouglas Gregor
necessary and iterate until all types and declarations have been written. This reduces the Cocoa.h PCH file size by about 4% (since we don't write types we don't need), and fixes problems where writing a declaration generates a new type. This doesn't seem to have any impact on performance either way. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70109 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-26implement PCH support for the rest of ExprObjC.h, includingChris Lattner
the missing bits of ObjCMessageExpr. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70100 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-26Don't read all of the records in the PCH file's preprocessor block,Douglas Gregor
most of which are ignored. Instead, move the __COUNTER__ value out to a PCH-level record (since it is handled eagerly) and move the header file information into the SourceManager block (which is also, currently, loaded eagerly). This results in another 17% performance improvement in the Cocoa-prefixed "Hello, World" with PCH. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70097 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-25Lazily load the controlling macros for all of the headers known in theDouglas Gregor
PCH file. In the Cocoa-prefixed "Hello, World" benchmark, this takes us from reading 503 identifiers down to 37 and from 470 macros down to 4. It also results in an 8% performance improvement. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70094 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-25Revert my changes that try to avoid creating StringMap entries forDouglas Gregor
identifiers. They don't yet work, but will inhibit future optimizations. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70071 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-25Start implementing the PTH IdentifierInfo-saving trick in PCH,Douglas Gregor
allocating IdentifierInfos with a pointer into the string data stored in the PCH file rather than having an entry in the identifier table's string map. However, we don't actually get these savings at the moment, because we go through the IdentifierTable when loading identifiers from the on-disk hash table. This commit is for record-keeping purposes only. I'll be reverting this change (and the PCH layout tweak that preceded it) because it appears that implementing this optimization will collide with another, future optimization to reduce the size of the on-disk hash table for identifiers. That optimization is likely to provide more benefit (with less voodoo). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70070 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-25Write the identifier offsets array into the PCH file as a blob, soDouglas Gregor
that the PCH reader does not have to decode the VBR encoding at PCH load time. Also, reduce the size of the identifier offsets from 64 bits down to 32 bits. The identifier table itself isn't going to grow to more than 4GB :) Overall, this results in a 13% speedup in the Cocoa-prefixed "Hello, World" benchmark. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70063 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-25Write the declaration and type offset arrays into the bitstream asDouglas Gregor
blobs, so that we don't need to do any work to get these arrays into memory at PCH load time. This gives another 19% performance improvement to the Cocoa-prefixed "Hello, World!". git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70059 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-25Load the selector table lazily from the PCH file. Douglas Gregor
This results in a 10% speedup on the Cocoa-prefixed "Hello, World!", all of which is (not surprisingly) user time. There was a tiny reduction in the size of the PCH file for Cocoa.h, because certain selectors aren't being written twice. I'm using two new tricks here that I'd like to replicate elsewhere: (1) The selectors not used in the global method pool are packed into the blob after the global method pool's on-disk hash table and stored as keys, so that all selectors are in the same blob. (2) We record the offsets of each selector key when we write it into the global method pool (or after it, in the same blob). The offset table is written as a blob, so that we don't need to pack/unpack a SmallVector with its contents. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70055 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-25Add PCH support for ObjCMessageExpr (needed to build Mail).Steve Naroff
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70044 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-25Make sure that the consumer sees all interested decls. This fixes PreviewDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70007 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-24PCH support for the global method pool (= instance and factory methodDouglas Gregor
pools, combined). The methods in the global method pool are lazily loaded from an on-disk hash table when Sema looks into its version of the hash tables. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69989 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-24Add PCH support for #import.Steve Naroff
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69987 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-23PCH support for all of the predefined Objective-C types, such as id,Douglas Gregor
SEL, Class, Protocol, CFConstantString, and __objcFastEnumerationState. With this, we can now run the Objective-C methods and properties PCH tests. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69932 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-23Add PCH read/write support for Objective-C Selectors.Steve Naroff
Note: This support is non-lazy. Once we get "Cocoa.h" humming, we can optimize this. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69884 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-22Add PCH statistics for the number/percent of lexical/visible declcontexts readDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69835 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-22Support locally-declared external declarations in PCH filesDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69833 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-22Support tentative definitions in precompiled headers. This isn't likelyDouglas Gregor
to happen (ever), but at least we'll do the right thing when it does. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69829 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-22Eliminate some FIXMEs in the PCH reader that were either already fixed or ↵Douglas Gregor
aren't actually things to fix git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69827 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-22Minimize the number and kind of "external definitions" that the PCHDouglas Gregor
file needs to store. CodeGen needs to see these definitions (via HandleTopLevelDecl), otherwise it won't be able to generate code for them. This patch notifies the consumer (e.g., CodeGen) about function definitions and variable definitions when the corresponding declarations are deserialized. Hence, we don't eagerly deserialize the declarations for every variable or function that has a definition in the PCH file. This gives another 5% speedup for the Carbon-prefixed "Hello, World!", and brings our PCH statistics down to something far more reasonable: *** PCH Statistics: 13/20693 types read (0.062823%) 17/59230 declarations read (0.028702%) 54/44914 identifiers read (0.120230%) 0/32954 statements read (0.000000%) 5/6187 macros read (0.080815%) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69820 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-22Lazy loading of builtins for precompiled headers.Douglas Gregor
PCH files now contain complete information about builtins, including any declarations that have been synthesized as part of building the PCH file. When using a PCH file, we do not initialize builtins at all; when needed, they'll be found in the PCH file. This optimization translations into a 9% speedup for "Hello, World!" with Carbon.h as a prefix header and roughly a 5% speedup for 403.gcc with its prefix header. We're also reading less of the PCH file for "Hello, World!": *** PCH Statistics: 286/20693 types read (1.382110%) 1630/59230 declarations read (2.751984%) 764/44914 identifiers read (1.701029%) 1/32954 statements read (0.003035%) 5/6187 macros read (0.080815%) down from *** PCH Statistics: 411/20693 types read (1.986179%) 2553/59230 declarations read (4.310316%) 1093/44646 identifiers read (2.448148%) 1/32954 statements read (0.003035%) 21/6187 macros read (0.339421%) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69815 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-22ObjCQualifiedClass is dead, remove it.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69783 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-22pch support for protocol qualified id's.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69781 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-22add three new objc expression types. @selector doesn't work because we have no Chris Lattner
way to serialize selectors yet. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69780 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-22implement serialization support for @encode,Chris Lattner
fix a couple of bugs in reader support for ObjCInterfaceDecl, and add support for reading ObjCInterfaceType. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69779 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-21Lazy deserialization of macro definitions for precompiled headers.Douglas Gregor
This optimization improves performance on the Carbon-prefixed "Hello, World!" example by 57%. For reference, we're now about 2.25x faster than GCC PCH. We're also pulling in far less of the PCH file: *** PCH Statistics: 411/20693 types read (1.986179%) 2553/59230 declarations read (4.310316%) 1093/44646 identifiers read (2.448148%) 1/32954 statements read (0.003035%) 21/6187 macros read (0.339421%) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69755 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-21Lazy deserialization of the declaration chains associated withDouglas Gregor
identifiers from a precompiled header. This patch changes the primary name lookup method for entities within a precompiled header. Previously, we would load all of the names of declarations at translation unit scope into a large DenseMap (inside the TranslationUnitDecl's DeclContext), and then perform a special "last resort" lookup into this DeclContext when we knew there was a PCH file (see Sema::LookupName). Now, when we see an identifier named for the first time, we load all of the declarations with that name that are visible from the translation unit into the IdentifierInfo's chain of declarations. Thus, the explicit "look into the translation unit's DeclContext" code is gone, and Sema effectively uses the same IdentifierInfo-based name lookup mechanism whether we are using a PCH file or not. This approach should help PCH scale with the size of the input program rather than the size of the PCH file. The "Hello, World!" application with Carbon.h as a PCH file now loads 20% of the identifiers in the PCH file rather than 85% of the identifiers. 90% of the 20% of identifiers loaded are actually loaded when we deserialize the preprocessor state. The next step is to make the preprocessor load macros lazily, which should drastically reduce the number of types, declarations, and identifiers loaded for "Hello, World". git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69737 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-21Add pch reader/writer support for most of DeclObjC.h. Very close to ↵Steve Naroff
reading/writing all ObjC AST nodes that we will encounter in header files (still a few FIXME's). Once selector support is in place, we should be able to take this for a spin (and add test cases). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69674 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-21Split preprocessor initialization logic out of clang-cc intoChris Lattner
libfrontend. Patch by Alexei Svitkine! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69664 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-20Write the identifier table into the PCH file as an on-disk hash tableDouglas Gregor
that also includes the contents of the IdentifierInfo itself (the various fields and flags, along with the chain of identifiers visible at the top level that have that name). We don't make any use of the hash table yet, except that our identifier ID -> string mapping points into the hash table now. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69625 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-20Add pch reader/writer support for ObjCContainerDecl, ObjCInterfaceDecl, & ↵Steve Naroff
ObjCIvarDecl. Next step: Add selector support to PCHWriter::AddDeclarationName(). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69619 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-20Introduce the notion of a SemaConsumer, which is an ASTConsumer thatDouglas Gregor
also gets access to the Sema object performing semantic analysis. This will be used by the PCH writer to serialize Sema state. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69595 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-20Add pch reader/writer support for ObjCMethodDecl.Steve Naroff
Test will be enabled with ObjCInterfaceDecl is added. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69594 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-19implement compiler support for -fno-diagnostics-fixit-info,Chris Lattner
rdar://6805442 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69525 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-18Store the type ID for __builtin_va_list in the PCH file, so that theDouglas Gregor
AST context's __builtin_va_list type will be set when the PCH file is loaded. This fixes the crash when CodeGen'ing a va_arg expression pulled in from a PCH file. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69421 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-18Lazy deserialization of function bodies for PCH files. For the CarbonDouglas Gregor
"Hello, World!", this takes us from deserializing 6469 statements/expressions down to deserializing 1 statement/expression. It only translated into a 1% improvement on the Carbon-prefixed 403.gcc, but (a) it's the right thing to do, and (b) we expect this to matter more once we lazily deserialize identifiers. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69407 91177308-0d34-0410-b5e6-96231b3b80d8
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