There's probably still significant padding waste on x86-64 UNIXen, but
the difference in 32-bit compiles should be significant.
There are a lot of Expr nodes left that could lose a word this way.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@117359 91177308-0d34-0410-b5e6-96231b3b80d8
slot. The easiest way to do that was to bundle up the information
we care about for aggregate slots into a new structure which demands
that its creators at least consider the question.
I could probably be convinced that the ObjC 'needs GC' bit should
be rolled into this structure.
Implement generalized copy elision. The main obstacle here is that
IR-generation must be much more careful about making sure that exactly
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@113962 91177308-0d34-0410-b5e6-96231b3b80d8
For large floats/integers, APFloat/APInt will allocate memory from the heap to represent these numbers.
Unfortunately, when we use a BumpPtrAllocator to allocate IntegerLiteral/FloatingLiteral nodes the memory associated with
the APFloat/APInt values will never get freed.
I introduce the class 'APNumericStorage' which uses ASTContext's allocator for memory allocation and is used internally by FloatingLiteral/IntegerLiteral.
Fixes rdar://7637185
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112361 91177308-0d34-0410-b5e6-96231b3b80d8
an lvalue of another, compatible Objective-C object type (e.g., a
subclass). Introduce a new initialization sequence step kind to
describe this binding, along with a new cast kind. Fixes PR7741.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110513 91177308-0d34-0410-b5e6-96231b3b80d8
This takes some trickery since CastExpr has subclasses (and indeed,
is abstract).
Also, smoosh the CastKind into the bitfield from Expr.
Drops two words of storage from Expr in the common case of expressions
which don't need inheritance paths. Avoids a separate allocation and
another word of overhead in cases needing inheritance paths. Also has
the advantage of not leaking memory, since destructors for AST nodes are
never run.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110507 91177308-0d34-0410-b5e6-96231b3b80d8
reinterpret_casts (possibly indirectly via C-style/functional casts)
on values, e.g.,
int i;
reinterpret_cast<short&>(i);
The IR generated for this is essentially the same as for
*reinterpret_cast<short*>(&i).
Fixes PR6437, PR7593, and PR7344.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@108294 91177308-0d34-0410-b5e6-96231b3b80d8
strip cv-qualifiers from the expression's type when the language calls
for it: in C, that's all the time, while C++ only does it for
non-class types.
Centralized the computation of the call expression type in
QualType::getCallResultType() and some helper functions in other nodes
(FunctionDecl, ObjCMethodDecl, FunctionType), and updated all relevant
callers of getResultType() to getCallResultType().
Fixes PR7598 and PR7463, along with a bunch of getResultType() call
sites that weren't stripping references off the result type (nothing
stripped cv-qualifiers properly before this change).
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@108234 91177308-0d34-0410-b5e6-96231b3b80d8
As a bonus, fix the warning for || and && operators; it was emitted even if one of the operands had side effects, e.g:
x || test_logical_foo1();
emitted a bogus "expression result unused" for 'x'.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107274 91177308-0d34-0410-b5e6-96231b3b80d8
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
in C++ that involve both integral and enumeration types. Convert all
of the callers to Type::isIntegralType() that are meant to work with
both integral and enumeration types over to
Type::isIntegralOrEnumerationType(), to prepare to eliminate
enumeration types as integral types.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106071 91177308-0d34-0410-b5e6-96231b3b80d8
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
value-dependent if their initializers are value-dependent; my recent
tweak to these dependent rules overstepped by taking away this
value-dependents. Fixes a Boost.GIL regression.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103476 91177308-0d34-0410-b5e6-96231b3b80d8
of the current instantiation is value-dependent. The C++ standard
fails to enumerate this case and, therefore, we missed it. Chandler
did all of the hard work of reducing the last remaining
Boost.PtrContainer failure (which had to do with static initialization
in the Serialization library) down to this simple little test.
While I'm at it, clean up the dependence rules for template arguments
that are declarations, and implement the dependence rules for template
argument packs.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103464 91177308-0d34-0410-b5e6-96231b3b80d8
except it only skips implicit casts.
Also fix ObjCImplicitGetterSetterRefExpr's child_begin to skip the base expression
if it's actually a type reference (which you get with static property references).
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103132 91177308-0d34-0410-b5e6-96231b3b80d8
Ted Kremenek
Argyrios Kyrtzidis
Chris Lattner
John McCall
Abramo Bagnara
Fariborz Jahanian
Sebastian Redl
Eli Friedman
Douglas Gregor