[PATCH] D21317: [sanitizer] Allow sanitize coverage w/o sanitizers.

[Evgeniy Stepanov via cfe-commits]

eugenis added a comment.

In http://reviews.llvm.org/D21317#457784, @kcc wrote:

> Can you at least add a compiler-rt test where we ensure that this flag can not be used such that it wil compile but fail to link?
>
> E.g.
>
>   clang -fsanitize-coverage=edge x.c 
>
> should compile *and* link (and run)


http://reviews.llvm.org/D21339


Repository:
  rL LLVM

http://reviews.llvm.org/D21317