search for: astrecordlayout

Hi! LLVM has a class, ConstantExpr, that is very handy for compile-time evaluation of const expressions. Unfortunately I cannot find any methods in it that would be helpful in evaluation of expressions similar to this: (uintptr_t)(&(*(TYPE*)0).FIELD), which is basically the implementation of the offsetof(TYPE, FIELD) macro. Specifically, there seem to be no provisions for dereferencing a

...this sort of expressions? >> Obviously, clang does it somehow, but so far I was not able to locate the >> relevant bit of code. Any pointers would be appreciated! >> > > Clang handles record types in a very abstract way, it doesn't rely on LLVM > IR at any level. An ASTRecordLayout is built for a record type and the > ASTRecordLayout::getFieldIndex method is used to determine the offset for a > particular field. > So it handles all const expression evaluation in the front-end? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http:...