Bug 8615 – Unused lazy arguments generate redundant code in empty inlined functions

% cat test.d void foo(lazy ulong x) {} void main(string[] args) { foo(args.length); } admin@poita ~% dmd -inline -O -release test.d admin@poita ~% otool -tV test | grep __Dmain: -A 9 __Dmain: 0000000100000dac pushq %rbp 0000000100000dad movq %rsp,%rbp 0000000100000db0 subq $0x10,%rsp 0000000100000db4 movq %rdi,0xf0(%rbp) 0000000100000db8 movq %rsi,0xf8(%rbp) 0000000100000dbc xorl %eax,%eax 0000000100000dbe movq %rbp,%rsp 0000000100000dc1 popq %rbp 0000000100000dc2 ret Notice the redundant movq's. They aren't there when the parameter isn't lazy. Ideally, this empty function would have no effect on the generated code. Tested using DMD 2.060

fixed see, https://godbolt.org/z/3P_PtD