[PATCH] D32920: Don't add DBG_VALUE instructions for static allocas in dbg.declare

[Adrian Prantl via Phabricator via llvm-commits]

aprantl added a comment.

I totally understand that it doesn't need to be tracked in the MMI table and in a DEBUG_VALUE, my question was that it sounded to my like you implied that the DWARF backend actively ignores DEBUG_VALUEs pointing to static allocas which I found really surprising (as there are legitimate reasons for allocas to be described by a DEBUG_VALUE) .

For example:

  void f(int i) {
    int x = i;
     if (x == 0)
       // DEBUG_VALUE x, const 0
       return bar();
     // DEBUG_VALUE x, FI-1
     baz(&x);
  }


https://reviews.llvm.org/D32920