Now that we're using LLVM 2.5, we can stop always running the CFGSimplification pass. The pass was originally added as a workaround for a LLVM 2.4 bug where debug info would reference labels that have been optimized away.

template toInt(char[4] arg)
{
	const uint toInt = (cast(uint[]) arg)[0];
	}
	 
	 void main()
	 {
	   auto i = toInt!("abcd");
	   }