llvm dev - Nov 2002 - [LLVMdev] how can I identify external functions?

On Fri, 22 Nov 2002, Juan Nicolas Ruiz wrote:
> It is valid that a function returns without using an Instruction::Ret
> as the last instruction?
No: http://llvm.cs.uiuc.edu/docs/LangRef.html#terminators

All basic blocks must have a terminator.
> If so, can we assume that a BasicBlock with
> no successors is an exit BB?
Yes, but you don't want to do this.  Just do:
if (isa<ReturnInst>(BB->getTerminator()))
  and be done with it, that's much more explicit.

-Chris

-- 
http://llvm.cs.uiuc.edu/
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How do I recognize that the callee function for a Instruction::Call is
external? I have:

CallInst *CI = cast<CallInst>(Inst);
Function *G = CI->getCalledFunction();

nicolas

G->isExternal(), sorry.

On Fri, 22 Nov 2002, Juan Nicolas Ruiz wrote:
> How do I recognize that the callee function for a Instruction::Call is
> external? I have:
>
> CallInst *CI = cast<CallInst>(Inst);
> Function *G = CI->getCalledFunction();
>
> nicolas
>
>
>
 Juan Nicolas Ruiz | Dept. of Computer Science
                   |     Univ. of Illinois
                   | #213 CSL, +1-217-244-1134