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* Fix crashers on unexpected std::initializer_list layouts. Found by inspection.Sebastian Redl2012-02-251-0/+4
| | | | llvm-svn: 151456
* Fix a stupid mistake in r151133. Reported to me by Joerg Sonnenberger.Eli Friedman2012-02-241-3/+5
| | | | llvm-svn: 151407
* Try to handle qualifiers more consistently for array InitListExprs. Fixes ↵Eli Friedman2012-02-231-4/+2
| | | | | | | | <rdar://problem/10907510>, and makes the ASTs a bit more self-consistent. (I've chosen to keep the qualifiers, but it isn't a strong preference; if anyone prefers removing them, please yell.) llvm-svn: 151229
* Make sure null initialization in arrays works correctly with ARC types. ↵Eli Friedman2012-02-221-2/+7
| | | | | | <rdar://problem/10907547>. llvm-svn: 151133
* Generate an AST for the conversion from a lambda closure type to aDouglas Gregor2012-02-221-0/+1
| | | | | | | | | | | | | | | block pointer that returns a block literal which captures (by copy) the lambda closure itself. Some aspects of the block literal are left unspecified, namely the capture variable (which doesn't actually exist) and the body (which will be filled in by IRgen because it can't be written as an AST). Because we're switching to this model, this patch also eliminates tracking the copy-initialization expression for the block capture of the conversion function, since that information is now embedded in the synthesized block literal. -1 side tables FTW. llvm-svn: 151131
* Make heap-allocation of std::initializer_list 'work'.Sebastian Redl2012-02-191-7/+5
| | | | llvm-svn: 150931
* Get recursive initializer lists to work and add a test. Codegen of ↵Sebastian Redl2012-02-191-12/+41
| | | | | | std::initializer_list is now complete. Onward to array new. llvm-svn: 150926
* Basic code generation support for std::initializer_list.Sebastian Redl2012-02-171-132/+262
| | | | | | | | | | | | | | | | | | | | | | | We now generate temporary arrays to back std::initializer_list objects initialized with braces. The initializer_list is then made to point at the array. We support both ptr+size and start+end forms, although the latter is untested. Array lifetime is correct for temporary std::initializer_lists (e.g. call arguments) and local variables. It is untested for new expressions and member initializers. Things left to do: Massively increase the amount of testing. I need to write tests for start+end init lists, temporary objects created as a side effect of initializing init list objects, new expressions, member initialization, creation of temporary objects (e.g. std::vector) for initializer lists, and probably more. Get lifetime "right" for member initializers and new expressions. Not that either are very useful. Implement list-initialization of array new expressions. llvm-svn: 150803
* Split reinterpret_casts of member pointers out from CK_BitCast; thisJohn McCall2012-02-151-0/+1
| | | | | | | | | | | | | | | | | | | | | is general goodness because representations of member pointers are not always equivalent across member pointer types on all ABIs (even though this isn't really standard-endorsed). Take advantage of the new information to teach IR-generation how to do these reinterprets in constant initializers. Make sure this works when intermingled with hierarchy conversions (although this is not part of our motivating use case). Doing this in the constant-evaluator would probably have been better, but that would require a *lot* of extra structure in the representation of constant member pointers: you'd really have to track an arbitrary chain of hierarchy conversions and reinterpretations in order to get this right. Ultimately, this seems less complex. I also wasn't quite sure how to extend the constant evaluator to handle foldings that we don't actually want to treat as extended constant expressions. llvm-svn: 150551
* Refactor lambda IRGen so AggExprEmitter::VisitLambdaExpr does the right thing.Eli Friedman2012-02-091-1/+7
| | | | llvm-svn: 150146
* A tiny bit more lambda IRGen.Eli Friedman2012-02-091-0/+1
| | | | llvm-svn: 150140
* simplify a bunch of code to use the well-known LLVM IR types computed by ↵Chris Lattner2012-02-071-2/+1
| | | | | | CodeGenModule. llvm-svn: 149943
* More dead code removal (using -Wunreachable-code)David Blaikie2012-01-201-1/+0
| | | | llvm-svn: 148577
* Some improvements to the handling of C11 atomic types:David Chisnall2012-01-161-0/+2
| | | | | | | | | | | | | | | | | | - Add atomic-to/from-nonatomic cast types - Emit atomic operations for arithmetic on atomic types - Emit non-atomic stores for initialisation of atomic types, but atomic stores and loads for every other store / load - Add a __atomic_init() intrinsic which does a non-atomic store to an _Atomic() type. This is needed for the corresponding C11 stdatomic.h function. - Enables the relevant __has_feature() checks. The feature isn't 100% complete yet, but it's done enough that we want people testing it. Still to do: - Make the arithmetic operations on atomic types (e.g. Atomic(int) foo = 1; foo++;) use the correct LLVM intrinsic if one exists, not a loop with a cmpxchg. - Add a signal fence builtin - Properly set the fenv state in atomic operations on floating point values - Correctly handle things like _Atomic(_Complex double) which are too large for an atomic cmpxchg on some platforms (this requires working out what 'correctly' means in this context) - Fix the many remaining corner cases llvm-svn: 148242
* Revert r147664; it's breaking clang regression tests.Eli Friedman2012-01-061-1/+1
| | | | llvm-svn: 147681
* Silence GCC warnings.Jakub Staszak2012-01-061-1/+1
| | | | llvm-svn: 147664
* Make EmitAggregateCopy take an alignment argument. Make EmitFinalDestCopy ↵Eli Friedman2011-12-051-6/+13
| | | | | | | | | | | pass in the correct alignment when known. The test includes a FIXME for a related case involving calls; it's a bit more complicated to fix because the RValue class doesn't keep track of alignment. <rdar://problem/10463337> llvm-svn: 145862
* Add a utility to get a RValue for a given LValue for an aggregate; switch a ↵Eli Friedman2011-12-031-3/+1
| | | | | | few places over to it. llvm-svn: 145747
* When destroying temporaries, instead of a custom cleanup use thePeter Collingbourne2011-11-271-1/+1
| | | | | | | | | | | generic pushDestroy function. This would reduce the number of useful declarations in CGTemporaries.cpp to one. Since CodeGenFunction::EmitCXXTemporary does not deserve its own file, move it to CGCleanup.cpp and delete CGTemporaries.cpp. llvm-svn: 145202
* Whenever explicitly activating or deactivating a cleanup, weJohn McCall2011-11-101-3/+12
| | | | | | | | | | need to provide a 'dominating IP' which is guaranteed to dominate the (de)activation point but which cannot be avoided along any execution path from the (de)activation point to the push-point of the cleanup. Using the entry block is bad mojo. llvm-svn: 144276
* Enter the cleanups for a block outside the enclosingJohn McCall2011-11-101-1/+3
| | | | | | | | | | | | full-expression. Naturally they're inactive before we enter the block literal expression. This restores the intended behavior that blocks belong to their enclosing scope. There's a useful -O0 / compile-time optimization that we're missing here with activating cleanups following straight-line code from their inactive beginnings. llvm-svn: 144268
* Rip out CK_GetObjCProperty.John McCall2011-11-071-2/+0
| | | | llvm-svn: 143910
* Rip the ObjCPropertyRef l-value kind out of IR-generation.John McCall2011-11-071-37/+8
| | | | llvm-svn: 143908
* Change the AST representation of operations on Objective-CJohn McCall2011-11-061-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | property references to use a new PseudoObjectExpr expression which pairs a syntactic form of the expression with a set of semantic expressions implementing it. This should significantly reduce the complexity required elsewhere in the compiler to deal with these kinds of expressions (e.g. IR generation's special l-value kind, the static analyzer's Message abstraction), at the lower cost of specifically dealing with the odd AST structure of these expressions. It should also greatly simplify efforts to implement similar language features in the future, most notably Managed C++'s properties and indexed properties. Most of the effort here is in dealing with the various clients of the AST. I've gone ahead and simplified the ObjC rewriter's use of properties; other clients, like IR-gen and the static analyzer, have all the old complexity *and* all the new complexity, at least temporarily. Many thanks to Ted for writing and advising on the necessary changes to the static analyzer. I've xfailed a small diagnostics regression in the static analyzer at Ted's request. llvm-svn: 143867
* Restore r142914 and r142915, now with missing file and apparentJohn McCall2011-10-251-1/+2
| | | | | | GCC compiler workaround. llvm-svn: 142931
* Revert r142914 and r142915, due to possibly missing file.NAKAMURA Takumi2011-10-251-2/+1
| | | | | | r142914: "Introduce a placeholder type for "pseudo object"" r142915: "Pull the pseudo-object stuff into its own file." llvm-svn: 142921
* Introduce a placeholder type for "pseudo object"John McCall2011-10-251-1/+2
| | | | | | | | | | | | | | | expressions: expressions which refer to a logical rather than a physical l-value, where the logical object is actually accessed via custom getter/setter code. A subsequent patch will generalize the AST for these so that arbitrary "implementing" sub-expressions can be provided. Right now the only client is ObjC properties, but this should be generalizable to similar language features, e.g. Managed C++'s __property methods. llvm-svn: 142914
* Initial implementation of __atomic_* (everything except __atomic_is_lock_free).Eli Friedman2011-10-111-0/+3
| | | | llvm-svn: 141632
* de-tmpify clang.Benjamin Kramer2011-09-271-2/+2
| | | | llvm-svn: 140637
* Removing a bunch of dead returns/breaks after llvm_unreachables.David Blaikie2011-09-231-1/+0
| | | | llvm-svn: 140407
* Switch assert(0/false) llvm_unreachable.David Blaikie2011-09-231-1/+1
| | | | llvm-svn: 140367
* Switch LangOptions over to a .def file that describes header of theDouglas Gregor2011-09-131-2/+2
| | | | | | | | | | 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. llvm-svn: 139605
* Rename the ARC cast kinds to start with "ARC".John McCall2011-09-101-4/+4
| | | | llvm-svn: 139466
* When converting a block pointer to an Objective-C pointer type, extendJohn McCall2011-09-101-0/+1
| | | | | | | | | | | the lifetime of the block by copying it to the heap, or else we'll get a dangling reference because the code working with the non-block-typed object will not know it needs to copy. There is some danger here, e.g. with assigning a block literal to an unsafe variable, but, well, it's an unsafe variable. llvm-svn: 139451
* Give conversions of block pointers to ObjC pointers a different cast kindJohn McCall2011-09-091-1/+2
| | | | | | | | than conversions of C pointers to ObjC pointers. In order to ensure that we've caught every case, add asserts to CastExpr that strictly determine which cast kind is used for which kind of bit cast. llvm-svn: 139352
* When performing a derived-to-base cast on the right-hand side of theDouglas Gregor2011-09-061-1/+3
| | | | | | | | | | | | | | | | synthesized move assignment within an implicitly-defined move assignment operator, be sure to treat the derived-to-base cast as an xvalue (rather than an lvalue). Otherwise, we'll end up getting the wrong constructor. Optimize a direct call to a trivial move assignment operator to an aggregate copy, as we do for trivial copy assignment operators, and update the the assertion in CodeGenFunction::EmitAggregateCopy() to cope with this optimization. Fixes PR10860. llvm-svn: 139143
* Extend the ASTContext constructor to delay the initialization ofDouglas Gregor2011-09-021-1/+1
| | | | | | | | 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). llvm-svn: 138985
* What say we document some of these AggValueSlot flags a bitJohn McCall2011-08-261-9/+10
| | | | | | better. llvm-svn: 138628
* Since the 'is aliased' bit is critical for correctness in C++, itJohn McCall2011-08-261-3/+6
| | | | | | | | | really shouldn't be optional. Fix the remaining place where a temporary was being passed as potentially-aliased memory. Fixes PR10756. llvm-svn: 138627
* Track whether an AggValueSlot is potentially aliased, and do notJohn McCall2011-08-251-21/+33
| | | | | | | | | | emit call results into potentially aliased slots. This allows us to properly mark indirect return slots as noalias, at the cost of requiring an extra memcpy when assigning an aggregate call result into a l-value. It also brings us into compliance with the x86-64 ABI. llvm-svn: 138599
* Use stronger typing for the flags on AggValueSlot and requireJohn McCall2011-08-251-12/+16
| | | | | | | creators to tell us whether something needs GC barriers. No functionality change. llvm-svn: 138581
* remove unneeded llvm:: namespace qualifiers on some core types now that ↵Chris Lattner2011-07-231-1/+1
| | | | | | | | LLVM.h imports them into the clang namespace. llvm-svn: 135852
* Convert IRBuilder::CreateGEP and IRBuilder::CreateInBoundsGEP to useJay Foad2011-07-221-1/+1
| | | | | | ArrayRef. llvm-svn: 135761
* de-constify llvm::Type, patch by David Blaikie!Chris Lattner2011-07-181-11/+11
| | | | llvm-svn: 135370
* Create a new expression node, SubstNonTypeTemplateParmExpr,John McCall2011-07-151-0/+3
| | | | | | | | to represent a fully-substituted non-type template parameter. This should improve source fidelity, as well as being generically useful for diagnostics and such. llvm-svn: 135243
* Emit partial destruction of structs with initializer lists.John McCall2011-07-111-20/+47
| | | | llvm-svn: 134913
* Fix a lot of problems with the partial destruction of arrays:John McCall2011-07-111-12/+15
| | | | | | | | | | | - an off-by-one error in emission of irregular array limits for InitListExprs - use an EH partial-destruction cleanup within the normal array-destruction cleanup - get the branch destinations right for the empty check Also some refactoring which unfortunately obscures these changes. llvm-svn: 134890
* A number of array-related IR-gen cleanups.John McCall2011-07-091-36/+123
| | | | | | | | | | | | - Emit default-initialization of arrays that were partially initialized with initializer lists with a loop, rather than emitting the default initializer N times; - support destroying VLAs of non-trivial type, although this is not yet exposed to users; and - support the partial destruction of arrays initialized with initializer lists when an initializer throws an exception. llvm-svn: 134784
* In ARC, reclaim all return values of retainable type, not just thoseJohn McCall2011-07-071-0/+1
| | | | | | | | | | | | where we have an immediate need of a retained value. As an exception, don't do this when the call is made as the immediate operand of a __bridge retain. This is more in the way of a workaround than an actual guarantee, so it's acceptable to be brittle here. rdar://problem/9504800 llvm-svn: 134605
* LValue carries a type now, so simplify the main EmitLoad/Store APIsJohn McCall2011-06-251-3/+3
| | | | | | by removing the redundant type parameter. llvm-svn: 133860
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