Commit Graph

673 Commits

Author SHA1 Message Date
John McCall a729c62b81 Whether an argument is required (in contrast with being an
optional argument passed through the variadic ellipsis)
potentially affects how we need to lower it.  Propagate
this information down to the various getFunctionInfo(...)
overloads on CodeGenTypes.  Furthermore, rename those
overloads to clarify their distinct purposes, and make
sure we're calling the right one in the right place.
This has a nice side-effect of making it easier to construct
a function type, since the 'variadic' bit is no longer
separable.

This shouldn't really change anything for our existing
platforms, with one minor exception --- we should now call
variadic ObjC methods with the ... in the "right place"
(see the test case), which I guess matters for anyone
running GNUStep on MIPS.  Mostly it's just a substantial
clean-up.

llvm-svn: 150788
2012-02-17 03:33:10 +00:00
Dan Gohman 515a60daff Teach clang to add metadata tags to calls and invokes in ObjC with
-fno-objc-arc-exceptions. This will allow the optimizer to perform
optimizations which are only safe under that flag.

This is a part of rdar://10803830.

llvm-svn: 150644
2012-02-16 00:57:37 +00:00
Richard Smith 6331c408b5 Deal with a horrible C++11 special case. If a non-literal type has a constexpr
constructor, and that constructor is used to initialize an object of static
storage duration such that all members and bases are initialized by constant
expressions, constant initialization is performed. In this case, the object
can still have a non-trivial destructor, and if it does, we must emit a dynamic
initializer which performs no initialization and instead simply registers that
destructor.

llvm-svn: 150419
2012-02-13 22:16:19 +00:00
Chris Lattner ece0409a1a simplify a bunch of code to use the well-known LLVM IR types computed by CodeGenModule.
llvm-svn: 149943
2012-02-07 00:39:47 +00:00
Chris Lattner 02cb1715ec build wide strings with ConstantDataArray, just because we can.
llvm-svn: 149928
2012-02-06 22:52:04 +00:00
Chris Lattner 00a10caeb6 improve the code that handles IR generation of byte-sized string literals to avoid
allocating an std::string.

llvm-svn: 149924
2012-02-06 22:47:00 +00:00
Chris Lattner 3def9aeaff use cheaper llvm APIs for various bits of IR generation.
llvm-svn: 149916
2012-02-06 22:16:34 +00:00
Chris Lattner 9c81833c8d reapply the patches reverted in r149477, which enable ConstantDataArray.
llvm-svn: 149801
2012-02-05 02:30:40 +00:00
Dylan Noblesmith 2c1dd2716a Basic: import SmallString<> into clang namespace
(I was going to fix the TODO about DenseMap too, but
that would break self-host right now. See PR11922.)

llvm-svn: 149799
2012-02-05 02:13:05 +00:00
Alexander Potapenko ef41fd31d4 Move the code that sets the AddressSafety
attribute into CodeGenModule::SetLLVMFunctionAttributesForDefinition().

Previously it resided in CodeGenModule::GetOrCreateLLVMFunction, which
for some reason wasn't called for ObjC class methods, see
http://code.google.com/p/address-sanitizer/issues/detail?id=33

llvm-svn: 149605
2012-02-02 11:49:28 +00:00
Argyrios Kyrtzidis a11b35a9b0 Revert r149363 which was part a series of commits that were reverted in llvm
commit 149470. This fixes test/CodeGen/PR3589-freestanding-libcalls.c.

Original log:

    ConstantArray::get() (for strings) is going away, use
    ConstantDataArray::getString instead.

    Many instances of ConstantArray::get() could be moved to
    use more efficient ConstantDataArray methods that avoid a ton
    of intermediate Constant*'s for each element (e.g.
    GetConstantArrayFromStringLiteral).  I don't plan on doing this
    in the short-term though.

llvm-svn: 149477
2012-02-01 06:36:49 +00:00
David Chisnall 92d436b49a Support @compatibility_alias at run time (GNUstep Runtime)
Patch by Niels Grewe!

llvm-svn: 149401
2012-01-31 18:59:20 +00:00
Chris Lattner f4a4bec3a0 ConstantArray::get() (for strings) is going away, use
ConstantDataArray::getString instead.

Many instances of ConstantArray::get() could be moved to 
use more efficient ConstantDataArray methods that avoid a ton
of intermediate Constant*'s for each element (e.g. 
GetConstantArrayFromStringLiteral).  I don't plan on doing this
in the short-term though.

llvm-svn: 149363
2012-01-31 06:13:55 +00:00
Kostya Serebryany 588d6abf7d The following patch adds __attribute__((no_address_safety_analysis)) which will allow to disable
address safety analysis (such as e.g. AddressSanitizer or SAFECode) for a specific function.

When building with AddressSanitizer, add AddressSafety function attribute to every generated function
except for those that have __attribute__((no_address_safety_analysis)).

With this patch we will be able to
1. disable AddressSanitizer for a particular function
2. disable AddressSanitizer-hostile optimizations (such as some cases of load widening) when AddressSanitizer is on.

llvm-svn: 148842
2012-01-24 19:25:38 +00:00
David Blaikie e4d798f078 More dead code removal (using -Wunreachable-code)
llvm-svn: 148577
2012-01-20 21:50:17 +00:00
Seth Cantrell c9196651fc test svn commit access
llvm-svn: 148388
2012-01-18 12:11:32 +00:00
Nick Lewycky 9ed5b156a2 Fix a string over-run detected by ASAN.
llvm-svn: 148375
2012-01-18 03:41:19 +00:00
Nick Lewycky 72cd229398 Fix special king of typo.
llvm-svn: 148368
2012-01-18 01:50:13 +00:00
Douglas Gregor ec9fd13c77 De-virtualize getPreviousDecl() and getMostRecentDecl() when we know
we have a redeclarable type, and only use the new virtual versions
(getPreviousDeclImpl() and getMostRecentDeclImpl()) when we don't have
that type information. This keeps us from penalizing users with strict
type information (and is the moral equivalent of a "final" method).

Plus, settle on the names getPreviousDecl() and getMostRecentDecl()
throughout.

llvm-svn: 148187
2012-01-14 16:38:05 +00:00
Richard Smith dafff94759 constexpr irgen: Add irgen support for APValue::Struct, APValue::Union,
APValue::Array and APValue::MemberPointer. All APValue values can now be emitted
as constants.

Add new CGCXXABI entry point for emitting an APValue MemberPointer. The other
entrypoints dealing with constant member pointers are no longer necessary and
will be removed in a later change.

Switch codegen from using EvaluateAsRValue/EvaluateAsLValue to
VarDecl::evaluateValue. This performs caching and deals with the nasty cases in
C++11 where a non-const object's initializer can refer indirectly to
previously-initialized fields within the same object.

Building the intermediate APValue object incurs a measurable performance hit on
pathological testcases with huge initializer lists, so we continue to build IR
directly from the Expr nodes for array and record types outside of C++11.

llvm-svn: 148178
2012-01-14 04:30:29 +00:00
Bill Wendling 86131f2c8d The `-fwritable-strings' flag doesn't make the backing store strings of all
CFStrings writable.

The strings (both Unicode and ASCII) should reside in a read-only section. E.g.,
__TEXT,__cstring instead of __DATA,__data. This is done by making the global
variable created for the strings constant despite the value of that flag.
<rdar://problem/10657500>

llvm-svn: 147845
2012-01-10 08:46:39 +00:00
Douglas Gregor f610267581 Eliminate ObjCForwardProtocolDecl, which is redundant now that
ObjCProtocolDecl modules forward declarations properly.

llvm-svn: 147415
2012-01-01 21:23:57 +00:00
Douglas Gregor deafd0b2a4 Eliminate ObjCClassDecl, which is redundant now that ObjCInterfaceDecl
covers both declarations (@class) and definitions (@interface) of an
Objective-C class.

llvm-svn: 147299
2011-12-27 22:43:10 +00:00
Rafael Espindola 4fdc1759ca Extend the fix for PR9614 to handle inline asm in the outer decl and
the inner decl being a builtin. This is needed to support the glibc headers
in fedora 16 (2.14).

llvm-svn: 146867
2011-12-19 14:41:01 +00:00
Douglas Gregor ba34552e79 Introduce a module import declaration, so that we properly represent, e.g.,
__import_module__ std.vector;

in the AST.

llvm-svn: 145725
2011-12-02 23:23:56 +00:00