Create a new channel as a copy of main.
Rename main to:
Delete main? This cannot be undone.
; RUN: llc -mtriple=thumb-eabi %s -o - | FileCheck %s define i32 @a(i32 %x, i32 %y) nounwind readnone { entry: %mul = mul i32 %y, %x ; <i32> [#uses=1] ret i32 %mul } ; CHECK: r0