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From: bugzilla-daemon@libre-riscv.org
To: libre-riscv-dev@lists.libre-riscv.org
Subject: [libre-riscv-dev] [Bug 267] The efficiency of adder/subtractor
Date: Tue, 07 Apr 2020 05:23:01 +0000
Message-ID: <bug-267-13-nOqZq7IP0p@http.bugs.libre-riscv.org/> (raw)
In-Reply-To: <bug-267-13@http.bugs.libre-riscv.org/>

http://bugs.libre-riscv.org/show_bug.cgi?id=267

--- Comment #2 from Jock Tanner <tanner.of.kha@gmail.com> ---
Another thing that is slightly bugging me here is lookahead carry units. Should
we reconfigure them "on the fly" together with adders/subtractors? Is that
viable? Multiplexers can introduce enough delay to make the whole looking-ahead
thing inefficient comparing to simple serial carry propagation.

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  parent reply index

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-26 22:05 [libre-riscv-dev] [Bug 267] New: " bugzilla-daemon
2020-03-26 23:10 ` [libre-riscv-dev] [Bug 267] " bugzilla-daemon
2020-04-07  5:23 ` bugzilla-daemon [this message]
2020-04-07  9:48 ` bugzilla-daemon
2020-04-07 11:39 ` bugzilla-daemon
2020-04-07 11:48 ` bugzilla-daemon
2020-04-07 13:15 ` bugzilla-daemon
2020-04-07 13:36 ` bugzilla-daemon
2020-04-07 13:38 ` bugzilla-daemon
2020-04-07 14:44 ` bugzilla-daemon
2020-04-07 15:14   ` whygee
2020-04-07 15:25     ` Jacob Lifshay
2020-04-07 15:46       ` whygee

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