Allow functions to be marked "implicit return zero" and so mark main().
Codegen by initializing the return value with its LLVM type's null value.

llvm-svn: 77288
3 files changed
tree: e336a4878c6a1a184c04f0791b82d193ee628ff8
  1. clang/
  2. compiler-rt/
  3. llvm/