Create a new channel as a copy of main.
Rename main to:
Delete main? This cannot be undone.
; RUN: llc < %s -march=avr | FileCheck %s declare i16 @llvm.bswap.i16(i16) define i16 @foo(i16) { ; CHECK-LABEL: foo: entry-block: %1 = tail call i16 @llvm.bswap.i16(i16 %0) ret i16 %1 }