search for: cast_convert_val

...sses, both of which support dyn_cast. In order to use dyn_cast on A, I need to do a bunch of extra work: 1) Since dyn_cast uses reinterpret_cast rather than static_cast, the pointer value won't get adjusted by the cast operation, making the pointer invalid. I end up having to redefine "cast_convert_val" and other parts of the casting machinery for my type, so that it uses static_cast. 2) In every class B which derives from A, it seems like I have to have 4 overloads of 'classof': One for B, one for A, and one for each of A's top-most ancestors. Otherwise I get ambiguity erro...

...These occur pretty much only in Support/Casting.h and llvm/Use.h. They may occur elsewhere but these are the only ones I've found so far. A case in point: /proj/work/llvm/include/Support/Casting.h: In static member function `static typename llvm::cast_retty<To, From>::ret_type llvm::cast_convert_val<To, FromTy, FromTy>::doit(const FromTy&)': /proj/work/llvm/include/Support/Casting.h:181: warning: use of old-style cast The offending code looks like: template<class To, class FromTy> struct cast_convert_val<To,FromTy,FromTy> { // This _is_ a simple type, just cast...

Moving to LLVM dev to discuss the possibility of extending the cast infrastructure to handle this. On Tue, Nov 20, 2012 at 5:51 PM, John McCall <rjmccall at apple.com> wrote: > On Nov 18, 2012, at 5:05 PM, David Blaikie <dblaikie at gmail.com> wrote: >> TypeLoc casting looks bogus. >> >> TypeLoc derived types return true from classof when the dynamic type >>

...pename std::enable_if<!std::is_same<Y, typename simplify_type<Y>::SimpleType>::value>::type> inline typename cast_retty<X, Y>::ret_type cast(const Y &Val) { assert(isa<X>(Val) && "cast<Ty>() argument of incompatible type!"); return cast_convert_val<X, Y, typename simplify_type<Y>::SimpleType>::doit(Val); } +template <class X, class Y, class S = typename std::enable_if<std::is_same<Y, typename simplify_type<Y>::SimpleType>::value>::type> +inline typename cast_retty<X, Y>::...

I was poking through the black magic in Casting.h, and I see this interesting struct/function: template<class To, class FromTy> struct cast_convert_val<To,FromTy,FromTy> { // This _is_ a simple type, just cast it. static typename cast_retty<To, FromTy>::ret_type doit(const FromTy &Val) { typename cast_retty<To, FromTy>::ret_type Res2 = (typename cast_retty<To, FromTy>::ret_type)const_cast<FromTy&>...

> On 2015-Jan-19, at 12:38, Frédéric Riss <friss at apple.com> wrote: > > >> On Jan 19, 2015, at 12:04 PM, Christian Schafmeister <chris.schaf at verizon.net> wrote: >> >> >> I forgot to mention this in my initial email. >> >> The build of LLVM that I was using was commit a0d5d7aed8e177cea381b3d054d80c212ece9f2c >> The date on the