[LLVMdev] dyn_cast vs. dynamic_cast

[Trevor Harmon]

LLVM has a relatively large number of proprietary replacements for  
standard C++ functions and classes. One of these is dyn_cast to  
replace dynamic_cast. The two calls appear to be semantically  
equivalent; the only difference that I can see is that dyn_cast  
reportedly works on classes that have no v-table [1]. Could someone  
please explain why I should use dyn_cast instead of dynamic_cast? (I  
thought all classes have v-tables...) Thanks,

Trevor

[1] http://llvm.org/docs/ProgrammersManual.html#isa