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2011-04-21PR9214: Convert Metadata API to use ArrayRef.Jay Foad
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@129929 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-15fix a bunch of comment typos found by codespell. Patch byChris Lattner
Luis Felipe Strano Moraes! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@129559 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-05Fix copy-and-paste bug that I introduced while tidying up the code.David Chisnall
Does anyone want to buy me a new brain? git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@128890 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-30Remove PHINode::reserveOperandSpace(). Instead, add a parameter toJay Foad
PHINode::Create() giving the (known or expected) number of operands. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@128538 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-30(Almost) always call reserveOperandSpace() on newly created PHINodes.Jay Foad
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@128534 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-26Reformatted doc comments so that they are now difficult to edit in any ↵David Chisnall
editor that doesn't have explicit doxygen support, as per LLVM style guidelines. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@128335 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-25Added some doc comments.David Chisnall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@128275 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-25Continuing work on ObjC tidyup:David Chisnall
- Moved the CGObjCRuntime functions out of CGObjCMac.cpp into CGObjCRuntime.cpp - Added generic functions in CGObjCRuntime for emitting @try and @synchronize blocks, usable by any runtime that uses DWARF exceptions. - Made the GNU runtimes use these functions. It should now be possible to replace the equivalent functions in CGObjCNonFragileABIMac with simple calls to these two functions, providing the runtime functions as arguments. I'll post a diff to the list for review before making any changes to the Mac runtime stuff. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@128274 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-23Fixed type error in last commit (forgot that now that selectors are notDavid Chisnall
accessed via the indirect pointer, they don't need to be pointers to pointers). Finished moving the message lookup code into separate subclasses for each runtime. Also performed a few smallish related tidies. We're now bitcasting the result of the message lookup functions, rather than casting the lookup functions themselves, so the messages.m test needed updating to reflect this. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@128180 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-23Revert r128156 because of CodeGenObjC/messages.m and Coverage/codegen-gnu.m.Andrew Trick
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@128157 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-23Remove the redundant loads / stores to globals that we were generating for ↵David Chisnall
selectors (GNU runtimes). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@128156 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-23Initial work on refactoring GNU runtime code (long overdue - it's quite obviousDavid Chisnall
that I hadn't used C++ for several years before writing most of this code). Still lots more to do. This set of changes includes: - Remove the distinction between typed and untyped selectors. More accurately reflect what the runtime does, by using typed selectors everywhere, with an empty type field if the types are unknown. Now we just store a small list of types for each selector (in theory, this should always be exactly one, but this constraint was not enforced back in 1986 when it should have been). - Add some consistency to how runtime functions are created. These are all generated via the LazyRuntimeFunction class (which might be useful outside CGObjCGNU - feel free to move it into a header if it is). This function stores the types of a function, looks it up the first time it's used, and caches the result. This means that we're now not wasting time constructing the llvm::FunctionType every time some of the functions are looked up, but also not inserting references to runtime functions into the module if they're not actually used. - Started separating out the fragile and non-fragile ABI behaviours into two subclasses of CGObjCGNU: CGObjCGCC for the legacy GCC runtime ABI and CGObjCGNUstep for the new GNUstep ABI. Not all of the differences in behaviour are factored out yet, but they will be in future commits. - Removed all of the CodeGen:: things: we've been using namespace CodeGen in this file for ages, so having explicit namespace specifiers is just a bit confusing. - Added a few more comments. - Used llvm::StringRef instead of std::string in a few places. - Finally got around to storing the module path in the module structure. The ABI says that the compiler should do this, although it's not used in the runtime or exposed outside the runtime, so it's pretty useless. Still to do: - We currently have two code paths for generating try blocks, one for ObjC and one for ObjC++. Not only are these substantially similar, they are also very similar to the CGObjCMac version. These need factoring out into a single parameterised implementation, either in CGObjCRuntime or CodeGenFunction. The EmitObjCXXTryStmt() function was added so that the changes to fix a bug in time for the 2.9 release would be self-contained and reduce the chances of breaking anything else, but these should be done properly as soon as possible. - Split up some large functions (e.g. GenerateClass()) into smaller functions for generating the various data structures. - The method lookup code into the two subclasses, removing the conditionals in the message send functions. - Add doxygen comments on the remaining undocumented functions. - We seem to be generating global pointer variables for selectors, then storing a pointer to the selector, then generating a load of this pointer (and then a load of the real selector later) every time a static selector is used. I can only assume I was asleep or drunk when I did this - we should just be referencing the selectors directly in the selector array. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@128152 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-22Make the ivar offset always be a ptrdiff_t, because stuff in CGObjC.cpp ↵David Chisnall
expects this. Actually, it expects a long, but that's a bug that will be fixed in the next commit... git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@128102 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-20Fix Objective-C++ exceptions (GNU runtime).David Chisnall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127980 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-16Fix foreign exception handling (GNU runtime).David Chisnall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127736 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-14Fix incorrect linkage specifiers for selectors.David Chisnall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127580 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-23Fix type mismatch between property function that CGObjCGNU was returning and ↵David Chisnall
the one CGObjC was calling. Fixes bug r9294. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126312 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-21The instance size of a metaclass should be the size of a class. This is ↵David Chisnall
not, in fact, 0, even for very small classes. (GNU runtime) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126161 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-09Convert RecordLayout::Size to CharUnits from bits. No changes toKen Dyck
functionality intended. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125156 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-07A few more tweaks to the blocks AST representation: John McCall
- BlockDeclRefExprs always store VarDecls - BDREs no longer store copy expressions - BlockDecls now store a list of captured variables, information about how they're captured, and a copy expression if necessary With that in hand, change IR generation to use the captures data in blocks instead of walking the block independently. Additionally, optimize block layout by emitting fields in descending alignment order, with a heuristic for filling in words when alignment of the end of the block header is insufficient for the most aligned field. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125005 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-28Move all the cleanups framework code into a single file.John McCall
Pure motion. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@124484 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-26Add support for GNU runtime property set / get structure functions. Minor ↵David Chisnall
refactoring of Mac runtime (returns the same function for both, as the Mac runtimes currently only provide a single entry point for setting and getting struct properties, although this will presumably be fixed at some point). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122569 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-09Remove the use of aliases in outputted code from ObjC (GNU runtime).David Chisnall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@118498 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-03Some fixes for synthesized ivar metadata (GNU runtime).David Chisnall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@118172 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-15Death to blocks, or at least the word "block" in one particular obnoxiouslyJohn McCall
ambiguous context. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@116567 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-11Fixes an obscure bug in importd block variable layoutFariborz Jahanian
information when imported variable is used more than once. Originally though to be a bug in importing block varibles. Fixes radar 8417746. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@113675 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-17Convert all uses of StringLiteral::getStrData() to StringLiteral::getString()Benjamin Kramer
and remove getStrData(). Patch by Peter Davies (with some tweaks). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111229 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-04Some early work for providing block layout info. Fariborz Jahanian
for objective-c/c++ blocks (NeXt runtime). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110213 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-24Support catching Objective C pointers in C++ under the non-fragile NeXT runtime.John McCall
Diagnose attempts to do this under the GNU or fragile NeXT runtimes. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109298 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-23Revise cleanup IR generation to fix a major bug with cleanups (PR7686)John McCall
as well as some significant asymptotic inefficiencies with threading multiple jumps through deep cleanups. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109274 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-21Don't crash when sending a message inside a block with the non-fragile ABI ↵David Chisnall
(GNU runtime). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109012 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-21Mark the load after calling objc_msg_lookup_sender() so that it doesn't get ↵David Chisnall
optimised away (GNU runtime). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109010 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-21Rename LazyCleanup -> Cleanup. No functionality change for these last threeJohn McCall
commits. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109000 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-21Convert the ObjC @synchronized cleanups to laziness. This is not actuallyJohn McCall
a big deal, except that I want to eliminate the shared-code EH cleanups in preparation for a significant algorithmic fix. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@108973 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-20Adopt objc_assign_threadlocal() for __thread variables of GC types.Fariborz Jahanian
Implements radar 8203301. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@108917 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-13Teach IR generation how to lazily emit cleanups. This has a lot of advantages,John McCall
mostly in avoiding unnecessary work at compile time but also in producing more sensible block orderings. Move the destructor cleanups for local variables over to use lazy cleanups. Eventually all cleanups will do this; for now we have some awkward code duplication. Tell IR generation just to never produce landing pads in -fno-exceptions. This is a much more comprehensive solution to a problem which previously was half-solved by checks in most cleanup-generation spots. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@108270 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-06Validated by nightly-test runs on x86 and x86-64 darwin, including afterJohn McCall
self-host. Hopefully these results hold up on different platforms. I tried to keep the GNU ObjC runtime happy, but it's hard for me to test. Reimplement how clang generates IR for exceptions. Instead of creating new invoke destinations which sequentially chain to the previous destination, push a more semantic representation of *why* we need the cleanup/catch/filter behavior, then collect that information into a single landing pad upon request. Also reorganizes how normal cleanups (i.e. cleanups triggered by non-exceptional control flow) are generated, since it's actually fairly closely tied in with the former. Remove the need to track which cleanup scope a block is associated with. Document a lot of previously poorly-understood (by me, at least) behavior. The new framework implements the Horrible Hack (tm), which requires every landing pad to have a catch-all so that inlining will work. Clang no longer requires the Horrible Hack just to make exceptions flow correctly within a function, however. The HH is an unfortunate requirement of LLVM's EH IR. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107631 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-17Objective-c++ IRGen. Support for @selector expression asFariborz Jahanian
an lvalue. Fixes PR7390. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106235 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-16Give Type::isIntegralType() an ASTContext parameter, so that itDouglas Gregor
provides C "integer type" semantics in C and C++ "integral type" semantics in C++. Note that I still need to update isIntegerType (and possibly other predicates) using the same approach I've taken for isIntegralType(). The two should have the same meaning, but currently don't (!). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106074 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-15Patch adds support for copying of thoseFariborz Jahanian
objective-c++ class objects which have GC'able objc object pointers and need to use ObjC's objc_memmove_collectable API (radar 8070772). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106061 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-22Push a return-value slot throughout ObjC message-send codegen. Will beJohn McCall
critical for ObjC++ correctness; hard to test independently of various required Sema changes, though. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104422 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-20Fix my inability to spell 'continue' and a case where message sends ↵David Chisnall
returning non-pointer-sized things were generating invalid IR inside @try blocks. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104222 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-17Clean up some more uses of getAs<ObjCInterfaceType>() that Fariborz pointedJohn McCall
out. The remaining ones are okay. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103973 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-15Substantially alter the design of the Objective C type AST by introducingJohn McCall
ObjCObjectType, which is basically just a pair of one of {primitive-id, primitive-Class, user-defined @class} with a list of protocols. An ObjCObjectPointerType is therefore just a pointer which always points to one of these types (possibly sugared). ObjCInterfaceType is now just a kind of ObjCObjectType which happens to not carry any protocols. Alter a rather large number of use sites to use ObjCObjectType instead of ObjCInterfaceType. Store an ObjCInterfaceType as a pointer on the decl rather than hashing them in a FoldingSet. Remove some number of methods that are no longer used, at least after this patch. By simplifying ObjCObjectPointerType, we are now able to easily remove and apply pointers to Objective-C types, which is crucial for a certain kind of ObjC++ metaprogramming common in WebKit. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103870 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-09Tweaked selector mangling again (GNU runtime).David Chisnall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103368 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-08Fixed linkage problem from last commit (GNU runtime).David Chisnall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103355 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-08Tweaked selector generation (GNU runtime). Removed the use of GlobalAliases ↵David Chisnall
in the generated bitcode. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103353 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-02As per Chris' request, return the Instruction from EmitCall and add the ↵David Chisnall
metadata in the caller. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102862 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-01Attach message send metadata to the lookup as well as to the call (GNU runtime).David Chisnall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102839 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-01Make super message lookups cacheable (GNUstep Runtime)David Chisnall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102837 91177308-0d34-0410-b5e6-96231b3b80d8
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