[PATCH] D124878: [Bitcode] Include indirect users of BlockAddresses in bitcode

[Wende Tan via Phabricator via llvm-commits]

twd2 added a comment.

FYI, before the patch:

  $ cat repro.c
  void f(long);
  
  __attribute__((noinline)) static void fun(long x) {
    f(x + 1);
  }
  
  void repro(void) {
    fun(({
      label:
        (long)&&label;
    }));
  }
  $ clang -O2 -flto -c repro.c -o repro.i
  $ llvm-bcanalyzer -dump repro.i | grep USER                         
  $ ld.lld repro.i

After the patch:

  $ clang -O2 -flto -c repro.c -o repro.i
  $ llvm-bcanalyzer -dump repro.i | grep USER                         
      <BLOCKADDR_USERS op0=1/>
                        1        28                    BLOCKADDR_USERS
  $ ld.lld repro.i
  ld.lld: warning: cannot find entry symbol _start; not setting start address


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D124878/new/

https://reviews.llvm.org/D124878