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Re: [Qemu-devel] [PATCH 2/2] tcg/arm: Implement movcond_i32


From: Richard Henderson
Subject: Re: [Qemu-devel] [PATCH 2/2] tcg/arm: Implement movcond_i32
Date: Thu, 27 Sep 2012 07:32:38 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:15.0) Gecko/20120911 Thunderbird/15.0.1

On 09/26/2012 11:33 PM, Paolo Bonzini wrote:
> Should you make tcg/optimize.c prefer "movcond a, a, b" to "movcond a,
> b, a", similar to commit c2b0e2f (tcg/optimize: prefer the "op a, a, b"
> form for commutative ops, 2012-09-19)?

I explicitly went with "a, b, a" because I find it is easier to
reason with positive logic (move-if-true) than negative logic.


r~



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