Le 23/09/2015 00:34, Scott Wood a écrit :
On Tue, 2015-09-22 at 22:57 +0200, Christophe Leroy wrote:
>Here is what I get in asm. First one is with "if (i) mb();". We see gcc
>puts a beqlr. This is the form that is closest to what we had in the
>former misc_32.S
>Second one if with "mb()". Here we get a branch to sync for a useless sync
I was more concerned with keeping the code simple than the asm output.
Right, but is that so complicated to say: if we did nothing in the loop,
no need to sync ?
Christophe
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