Create a new channel as a copy of main.
Rename main to:
Delete main? This cannot be undone.
; RUN: not llvm-as < %s 2>&1 | FileCheck %s ; CHECK: invalid cast opcode for cast from '<4 x i64>' to '<3 x i8>' define <3 x i8> @foo(<4 x i64> %x) { %y = trunc <4 x i64> %x to <3 x i8> ret <3 x i8> %y }