[Issue 12971] DMD inline asm outputs wrong AND instruction

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=12971

--- Comment #2 from safety0ff.bugz <safety0ff.bugz at gmail.com> ---
SIL is broken beyond recognition:
SHR SIL, 1; // DMD outputs SHR DH, 1
movzx CX, SIL; // movzbw CX, DH

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