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2011-06-21^cat^cast^Fariborz Jahanian
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133529 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
2011-06-21Add comment before CheckObjCARCConversion is called onFariborz Jahanian
Expr value not getting changed by this call. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133527 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-21Switch the order of the notes for the parentheses suggested in the caseChandler Carruth
of: a + b ? x : y. In our testing of this flag we've yet to hit a single case where the existing precedence was correct, so we should suggest grouping the ?: first. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133526 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-21objc-arc: CodeGen part of unbridged cast of CF types.Fariborz Jahanian
// rdar://9474349 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133525 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-21Fix a crash when a pointer-to-member function is called in the conditionChandler Carruth
expression of '?:'. Add a test case for this pattern, and also test the code that led to the crash in a "working" case as well. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133523 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
2011-06-21Make more use of llvm::StringRef in various APIs. In particular, don'tJay Foad
use the deprecated forms of llvm::StringMap::GetOrCreateValue(). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133515 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-21Fix typo. From Damjan Marion.Joerg Sonnenberger
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133511 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
2011-06-21Driver/Darwin: Honor -Xarch_FOO when the arch matches either the toolchain orDaniel Dunbar
the architecture being bound. - Fixes things like -Xarch_armv7. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133490 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
2011-06-21Move additional register names to their own lookup, separate fromEric Christopher
register aliases. Fixes unnecessary renames of clobbers. Fixes part of rdar://9425559 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133485 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-20[arcmt] Always add '__bridge' cast when 'self' is cast to a C pointer. ↵Argyrios Kyrtzidis
rdar://9644061 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133480 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-20[analyzer] Finish size argument checking for strncat (and strncpy).Jordy Rose
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133472 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-20objc-arc: allow explicit unbridged casts if the source of the cast is aFariborz Jahanian
message sent to an objc method (or property access) // rdar://9474349 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133469 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-20[arcmt] Find out whether there is an ARC runtime directly from the triple, ↵Argyrios Kyrtzidis
avoid hacky delegation to the driver for that. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133464 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-20Warn for un-parenthesized '&' inside '|' (a & b | c), rdar://9553326.Argyrios Kyrtzidis
Patch by Henry Mason with tweaks by me. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133453 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
2011-06-20Define va_copy when in C++0x mode; C++0x picked it up from C99.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133438 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-20Define __cplusplus to 201103L when in (non-GNU) C++0x mode.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133437 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
2011-06-20Fix a problem with the diagnostics of invalid arithmetic with functionChandler Carruth
pointers I found while working on the NULL arithmetic warning. We here always assuming the LHS was the pointer, instead of using the selected pointer expression. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133428 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-20Move away from the poor "abstraction" I added to Type. John arguedChandler Carruth
effectively that this abstraction simply doesn't exist. That is highlighted by the fact that by using it we were papering over a more serious error in this warning: the fact that we warned for *invalid* constructs involving member pointers and block pointers. I've fixed the obvious issues with the warning here, but this is confirming an original suspicion that this warning's implementation is flawed. I'm looking into how we can implement this more reasonably. WIP on that front. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133425 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
2011-06-20[analyzer] Replace stream-built error message with constant string. No ↵Jordy Rose
functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133410 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-20[analyzer] Re-enable checking for strncpy, along with a new validation of ↵Jordy Rose
the size argument. strncat is not yet up-to-date, but I'm leaving it enabled for now (there shouldn't be any false positives, at least...) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133408 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-20[analyzer] Eliminate "byte string function" from CStringChecker's ↵Jordy Rose
diagnostics, and make it easier to provide custom messages for overflow checking, in preparation for re-enabling strncpy checking. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133406 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-20Restructure the API in Type based on a conversation with Richard Smith.Chandler Carruth
This makes 'isPointerLikeType' a little less confusing, and pulls the decay check into a separate interface that is much more clear and concrete. Also, just implement these as logical wrappers around other predicates. Having a switch based implementation isn't likely to be necessary. We can try to optimize them later if they show up on a profile. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133405 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-19Add test cases for false positives on -Wnull-arithmetic from RichardChandler Carruth
Trieu, and fix them by checking for array and function types as well as pointer types. I've added a predicate method on Type to bundle together the logic we're using here: isPointerLikeType(). I'd welcome better names for this predicate, this is the best I came up with. It's implemented as a switch to be a touch lighter weight than all the chained isa<...> casts that would result otherwise. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133383 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-19Handle decltype keyword in Parser::isDeclarationSpecifier.Francois Pichet
Fixes PR10154. Found by parsing MFC 2010 code with clang. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133380 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
2011-06-18Accept no-return stripping conversions for pointer type arguments afterChandler Carruth
deducing template parameter types. Recently Clang began enforcing the more strict checking that the argument type and the deduced function parameter type (after substitution) match, but that only consideres qualification conversions. One problem with this patch is that we check noreturn conversions and qualification conversions independently. If a valid conversion would require *both*, perhaps interleaved with each other, it will be rejected. If this actually occurs (I'm not yet sure it does) and is in fact a problem (I'm not yet sure it is), there is a FIXME to implement more intelligent conversion checking. However, this step at least allows Clang to resume accepting valid code we're seeing in the wild. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133327 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-18[arcmt] Fix the ARC migrator. -arcmt-modify requires running before the ↵Argyrios Kyrtzidis
initialization of SourceManager because it is going to modify the input file. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133323 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-18[arcmt] Const'ify.Argyrios Kyrtzidis
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133322 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-17[arcmt] Remove '-arcmt-modify-in-memory', it turned out less useful than we ↵Argyrios Kyrtzidis
hoped it would be. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133315 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-17Fix regression with @encode string. rdar://9624314.Argyrios Kyrtzidis
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133312 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-17Objective-C++ ARC: eliminate the utterly unjustified loophole thatDouglas Gregor
silently dropped ownership qualifiers that were being applied to ownership-qualified, substituted type that was *not* a substituted template type parameter. We now provide a diagnostic in such cases, and recover by dropping the added qualifiers. Document this behavior in the ARC specification. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133309 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-17Objective-C++ ARC: do not mangle __unsafe_unretained lifetimeDouglas Gregor
qualifiers, so that an __unsafe_unretained-qualified type T in ARC code will have the same mangling as T in non-ARC code, improving ABI interoperability. This works now because we infer or require a lifetime qualifier everywhere one can appear in an external interface. Another part of <rdar://problem/9595486>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133306 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-17Objective-ARC++: infer template type arguments ofDouglas Gregor
ownership-unqualified retainable object type as __strong. This allows us to write, e.g., std::vector<id> and we'll infer that the vector's element types have __strong ownership semantics, which is far nicer than requiring: std::vector<__strong id> Note that we allow one to override the ownership qualifier of a substituted template type parameter, e.g., given template<typename T> struct X { typedef __weak T type; }; X<id> is treated the same as X<__strong id>. At instantiation type, the __weak in "__weak T" overrides the (inferred or specified) __strong on the template argument type, so that we can still provide metaprogramming transformations. This is part of <rdar://problem/9595486>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133303 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-17Only accept __bridge_retain in system headers, as Doug suggested.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133300 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-17As a hopefully temporary workaround for a header mistake, treatJohn McCall
__bridge_retain as a synonym for __bridge_retained. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133295 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-17Add a minor hack to avoid using isNullPointerConstant on a hot path. Fixes ↵Eli Friedman
-O0 compile-time regressions from r133196. rdar://9629775 . git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133290 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-17Don't emit 'unavailable' errors inside an unavailable function. rdar://9623855.Argyrios Kyrtzidis
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133264 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
2011-06-17Fix refactoro, silencing an MSVC warning. Thanks, Francois.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133257 91177308-0d34-0410-b5e6-96231b3b80d8
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