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2011-06-29Add ARC support for the GNUstep runtime.David Chisnall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@134065 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-29We don't pass classes with a copy-constructor or destructor byval, so the ↵Eli Friedman
address takes up an integer register (if one is available). Make sure the x86-64 ABI implementation takes that into account properly. The fixed implementation is compatible with the implementation both gcc and llvm-gcc use. rdar://9686430 . (This is the issue that was reported in the thread "[LLVMdev] Segfault calling LLVM libs from a clang-compiled executable".) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@134059 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-29SubtargetFeature.h has been moved to MC.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@134050 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-28Under a compiler flag, -freset-local-blocks,Fariborz Jahanian
wipe out stack blocks when they go out of scope. // rdar://9227352 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@134045 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-28Split out logic for valid clobbers and valid inline asm registers.Eric Christopher
Fixes rdar://9281377 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@134016 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-28Eliminate most uses of ShallowCollectObjCIvars which requiresFariborz Jahanian
a vector for collection. Use iterators where needed instead. // rdar://6817577 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@134015 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-27Fix PR10204 in a better way.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133943 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-27Revert parts of r133860 to fix a crash. Add a test.Nico Weber
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133931 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-25Cleanup cast IRGen a bit; no intended functionality change.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133864 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-25Do not apply the ARC move optimization to 'const'-qualified xvalues.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133861 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-25LValue carries a type now, so simplify the main EmitLoad/Store APIsJohn McCall
by removing the redundant type parameter. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133860 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-25Mark the multiply which occurs as part of performing pointerJohn McCall
arithmetic on a VLA as 'nsw', per discussion with djg, and implement pointer arithmetic (other than array accesses) and pointer subtraction for VLA types. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133855 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-24Honor objc_precise_lifetime in GC mode by feeding the valueJohn McCall
in the variable to an inline asm which gets run when the variable goes out of scope. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133840 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-24Revert "Shorten some ARM builtin names by removing unnecessary "neon" prefix."Bob Wilson
Sorry, this was a bad idea. Within clang these builtins are in a separate "ARM" namespace, but the actual builtin names should clearly distinguish tha they are target specific. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133833 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-24Fix struct member's scope. Patch by Xi Wang.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133829 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-24Change the IR-generation of VLAs so that we capture bounds,John McCall
not sizes; so that we use well-typed allocas; and so that we properly recurse through the full set of variably-modified types. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133827 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-24Shorten some ARM builtin names by removing unnecessary "neon" prefix.Bob Wilson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133826 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-23Support for catching objc pointer objects in c++ catch-statementFariborz Jahanian
in fragile abi mode and some other cleanups. // rdar://8940528 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133747 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-22Alloa catching Objective-C id's being thrown with C++ throwFariborz Jahanian
in Darwin's fragile abi mode. // rdar://8940528 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133639 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-22Try to silence GCC warningDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133623 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-22Implement the C++0x move optimization for Automatic Reference CountingDouglas Gregor
objects, so that we steal the retain count of a temporary __strong pointer (zeroing out that temporary), eliding a retain/release pair. Addresses <rdar://problem/9364932>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133621 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-22When binding a reference to an Automatic Reference Counting temporary,Douglas Gregor
retain/release the temporary object appropriately. Previously, we would only perform the retain/release operations when the reference would extend the lifetime of the temporary, but this does the wrong thing across calls. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133620 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-22Replace the existing forms of ConstantArray::get() with a single formJay Foad
that takes an ArrayRef. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133615 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-22Emit @finally blocks completely lazily instead of forcing theirJohn McCall
existence by always threading an edge from the catchall. Not doing this was previously causing a crash in the very extreme case where neither the normal cleanup nor the EH catchall was actually reachable: we would delete the catchall entry block, which would cause us to delete the entry block of the finally cleanup as well because the cleanup logic would merge the blocks, which in turn triggered an assert because later blocks in the finally would still be using values from the entry. Laziness turns out to be the most elegant solution to the problem. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133601 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-21IRgen: Add a -fuse-register-sized-bitfield-access option, for testing.Daniel Dunbar
- Changes bit-field access policy to try to use (aligned) register sized accesses. The idea here is that by using larger accesses we expose more coalescing potential to the backend when we have situations like adjacent bit-fields in the same structure (which is common), and that the backend should be smart enough to narrow the accesses down when no coalescing is done or when it is shown not to be profitable. -- $ clang -m32 -O3 -S -o - t.c _f0: ## @f0 pushl %ebp movl %esp, %ebp movl 8(%ebp), %eax movb (%eax), %cl andb $-128, %cl orb $1, %cl movb %cl, (%eax) movb 1(%eax), %cl andb $-128, %cl orb $1, %cl movb %cl, 1(%eax) movb 2(%eax), %cl andb $-128, %cl orb $1, %cl movb %cl, 2(%eax) movb 3(%eax), %cl andb $-128, %cl orb $1, %cl movb %cl, 3(%eax) popl %ebp ret $ clang -m32 -O3 -S -o - t.c -Xclang -fuse-register-sized-bitfield-access _f0: ## @f0 pushl %ebp movl %esp, %ebp movl 8(%ebp), %eax movl $-2139062144, %ecx ## imm = 0xFFFFFFFF80808080 andl (%eax), %ecx orl $16843009, %ecx ## imm = 0x1010101 movl %ecx, (%eax) popl %ebp ret -- git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133532 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-21IRgen: Add CGOptions to CGTypes.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133530 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-21A few tweaks to MaterializeTemporaryExpr suggested by John.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133528 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-21Introduce a new AST node describing reference binding to temporaries.Douglas Gregor
MaterializeTemporaryExpr captures a reference binding to a temporary value, making explicit that the temporary value (a prvalue) needs to be materialized into memory so that its address can be used. The intended AST invariant here is that a reference will always bind to a glvalue, and MaterializeTemporaryExpr will be used to convert prvalues into glvalues for that binding to happen. For example, given const int& r = 1.0; The initializer of "r" will be a MaterializeTemporaryExpr whose subexpression is an implicit conversion from the double literal "1.0" to an integer value. IR generation benefits most from this new node, since it was previously guessing (badly) when to materialize temporaries for the purposes of reference binding. There are likely more refactoring and cleanups we could perform there, but the introduction of MaterializeTemporaryExpr fixes PR9565, a case where IR generation would effectively bind a const reference directly to a bitfield in a struct. Addresses <rdar://problem/9552231>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133521 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-21De-Unicode-ify in comments.NAKAMURA Takumi
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133501 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-21Add support for -Wa,--noexecstack when building from a non-assembly file. ForNick Lewycky
an assembly file it worked correctly, while for a .c file it would given an error about how --noexecstack is not a supported argument to -Wa. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133489 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-21Canonicalize register names properly.Eric Christopher
Fixes rdar://9425559 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133486 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-20llvm-gcc treats a tentative definition with a previousFariborz Jahanian
(or follow up) extern declaration with weak_import as an actual definition. make clang follows this behavior. // rdar://9538608 llvm-gcc treats an extern declaration with weak_import git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133450 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-20Change how PHINodes store their operands.Jay Foad
Change PHINodes to store simple pointers to their incoming basic blocks, instead of full-blown Uses. Note that this loses an optimization in SplitCriticalEdge(), because we can no longer walk the use list of a BasicBlock to find phi nodes. See the comment I removed starting "However, the foreach loop is slow for blocks with lots of predecessors". Extend replaceAllUsesWith() on a BasicBlock to also update any phi nodes in the block's successors. This mimics what would have happened when PHINodes were proper Users of their incoming blocks. (Note that this only works if OldBB->replaceAllUsesWith(NewBB) is called when OldBB still has a terminator instruction, so it still has some successors.) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133435 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-20Remove more unnecessary #include <llvm/ADT/SmallVector.h>Francois Pichet
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133418 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-20Update to match mainline ConstantStruct::get API change. Also, use Chris Lattner
ConvertType on InitListExprs as they are being converted. This is needed for a forthcoming patch, and improves the IR generated anyway (see additional type names in testcases). This patch also converts a bunch of std::vector's in CGObjCMac to use C arrays. There are a ton more that should be converted as well. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133413 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-18update for api change.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133365 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-18Remove dead variables.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133346 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-1880 cols.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133345 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-17When emitting a compound literal of POD type, continue to emit aDouglas Gregor
separate aggregate temporary and then memcpy it over to the destination. This fixes a regression I introduced with r133235, where the compound literal on the RHS of an assignment makes use of the structure on the LHS of the assignment. I'm deeply suspicious of AggExprEmitter::VisitBinAssign()'s optimization where it emits the RHS of an aggregate assignment directly into the LHS lvalue without checking whether there is any aliasing between the LHS/RHS. However, I'm not in a position to revisit this now. Big thanks to Eli for finding the regression! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133261 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-17Perform an acquire memory barrier on the fast path of a thread-safeJohn McCall
static initializer check, as required by the Itanium ABI. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133250 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-17Objective-C fast enumeration loop variables are not retained in ARC, butJohn McCall
they should still be officially __strong for the purposes of errors, block capture, etc. Make a new bit on variables, isARCPseudoStrong(), and set this for 'self' and these enumeration-loop variables. Change the code that was looking for the old patterns to look for this bit, and change IR generation to find this bit and treat the resulting variable as __unsafe_unretained for the purposes of init/destroy in the two places it can come up. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133243 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-17Implement proper support for generating code for compound literals inDouglas Gregor
C++, which means: - binding the temporary as needed in Sema, so that we generate the appropriate call to the destructor, and - emitting the compound literal into the appropriate location for the aggregate, rather than trying to emit it as a temporary and memcpy() it. Fixes PR10138 / <rdar://problem/9615901>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133235 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-17Check the specific target to figure out if a constraint is a validEric Christopher
register constraint. Note that we're not checking if the register itself is valid for the constraint. Fixes rdar://9382985 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133226 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-16Move computation of __private_extern__ visibilty toFariborz Jahanian
getLVForNamespaceScopeDecl(). // rdar://9609649 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133182 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-16Set the visibility to 'hidden' when previousFariborz Jahanian
declaration of global var is __private_extern__. // rdar://9609649 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133157 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-16Restore correct use of GC barriers.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133144 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-15Suppress a warning in -Asserts builds.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133110 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-15Automatic Reference Counting.John McCall
Language-design credit goes to a lot of people, but I particularly want to single out Blaine Garst and Patrick Beard for their contributions. Compiler implementation credit goes to Argyrios, Doug, Fariborz, and myself, in no particular order. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133103 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-15Per Chris's suggestion, simplify code using llvm::getOrEnforceKnownAlignment.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133095 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-15Use isAnyComplexType here so we don't pass complex numbers into the ↵Eli Friedman
aggregate handling code; found by inspection. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133070 91177308-0d34-0410-b5e6-96231b3b80d8
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