Wraps the expansions of TYPE_SWITCH and COMPOSITE_TYPE_SWITCH in
the constexpr interpreter with "do { ... } while (0)" so that these
macros can be used like this:
if (llvm::Optional<PrimType> T = Ctx.classify(FieldTy))
TYPE_SWITCH(*T, Ok &= ReturnValue<T>(FP.deref<T>(), Value));
else
Ok &= Composite(FieldTy, FP, Value);
This bug was found while testing D116316. See also review comment:
https://reviews.llvm.org/D64146?id=208520#inline-584131
Also cleaned up the macro definitions by removing the superfluous
do-while statements and removed the unused INT_TPYE_SWITCH macro.
Differential Revision: https://reviews.llvm.org/D117301
7cd441ff53