Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

2003-05-12-MinIntProblem.ll
; RUN: llvm-as < %s | llvm-dis | grep -- -2147483648
; RUN: verify-uselistorder %s

define i32 @foo() {
        ret i32 -2147483648
}