shithub: femtolisp

ref: 18e53e22e72b527843fa60e4063ef42fbc9fa569
dir: /plan9_builtins_amd64.s/

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TEXT __builtin_clz(SB),1,$0
	BYTE $0x0F; BYTE $0xBD; BYTE $0xC5 /* BSRL RARG, AX */
	XORL $31, AX
	RET