tree 17dfe3d641def9bc9f8d5cd473c64ad013275d96
parent 60432109a5cb0687d255cd0d022ae7711e6340f5
author Azat Khuzhin <a3at.mail@gmail.com> 1434086439 +0300
committer Christopher Li <sparse@chrisli.org> 1434273098 -0700

sparse, llvm: compile: skip function prototypes to avoid SIGSEGV

You can't pass function to LLVMConstNull(), according to
Constant::getNullValue, and sparse-llvm already handle functions differently
(i.e. there will be no call to LLVMConstNull(), but this is not true for
function prototypes, because of how linearize_fn() works:
```
static struct entrypoint *linearize_fn(...)
{
  ...
  if (!base_type->stmt)
    return NULL;
  ...
}
```

```
Constant *Constant::getNullValue(Type *Ty) {
  switch (Ty->getTypeID()) {
  ...
  default:
    // Function, Label, or Opaque type?
    llvm_unreachable("Cannot create a null constant of that type!");
  }
}
```

Signed-off-by: Azat Khuzhin <a3at.mail@gmail.com>
Signed-off-by: Christopher Li <sparse@chrisli.org>