Ignored vs Assumed Semantics in BDE

BloombergLP::bbldc::PeriodDayCountUtil::daysDiff(BloombergLP::bdlt::Date const&, BloombergLP::bdlt::Date const&, BloombergLP::bbldc::DayCountConvention::Enum) - Assumed

0000000000404d30 <BloombergLP::bbldc::PeriodDayCountUtil::daysDiff(BloombergLP::bdlt::Date const&, BloombergLP::bdlt::Date const&, BloombergLP::bbldc::DayCountConvention::Enum)>:
M0000000000000000:	movl	(%rsi), %eax	;  2 bytes
M0000000000000002:	subl	(%rdi), %eax	;  2 bytes
M0000000000000004:	retq		;  1 bytes
M0000000000000005:	nopw	%cs:(%rax,%rax)	; 10 bytes
M000000000000000f:	nop		;  1 bytes