[LLVMdev] Why shouldn't function entry blocks have predecessors?

Félix Cloutier felixcca at yahoo.ca
Wed Jul 7 23:16:46 PDT 2010

The title says it all. verifyFunction checks it (Verifier.cpp, line 728).

Why can't BasicBlocks that serve as a function's entry point also have predecessors? What keeps a function from looping back to its beginning?

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