Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

2007-01-13-ExtCompareMiscompile.ll
; RUN: opt < %s -passes=instcombine -S | grep "icmp ugt"
; PR1107
; PR1940

define i1 @test(i8 %A, i8 %B) {
	%a = zext i8 %A to i32
	%b = zext i8 %B to i32
	%c = icmp sgt i32 %a, %b
	ret i1 %c
}