immediate predecessors

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1

hi,
how to get the number of immediate predecessors for
each basic block (arguements of remarks statement at
the beginning of the basic block)

thank you
aditya

2

Hi Aditya,

how to get the number of immediate predecessors for
each basic block (arguements of remarks statement at
the beginning of the basic block)

Look at include/llvm/Support/CFG.h. It has a "pred_iterator" definition. So you can probably do something along the lines of:

  BasicBlock *BB;

  pred_iterator PI = pred_begin(BB);
  pred_iterator PE = pred_end(BB);

  for (; PI != PE; ++PI) {
    // Do something
  }

Do a search on the code base to see examples of its use.

Cheers!
-bw

3

I added this to the programmer's manual:
http://llvm.org/docs/ProgrammersManual.html#iterate_preds

-Chris