Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

fastcc-2.ll
; RUN: llc < %s -mtriple=i686-apple-darwin -mattr=+sse2 | FileCheck %s
; CHECK: movsd
; CHECK-NOT: mov

define i32 @foo() nounwind {
entry:
	tail call fastcc void @bar( double 1.000000e+00 ) nounwind
	ret i32 0
}

declare fastcc void @bar(double)