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From: "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com>
Newsgroups: comp.arch
Subject: Re: Arm ldaxr / stxr loop question
Date: Thu, 14 Nov 2024 14:21:32 -0800
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On 11/14/2024 1:23 AM, aph@littlepinkcloud.invalid wrote:
> Kent Dickey <kegs@provalid.com> wrote:
> 
>> Even better, let's look at the actual words for Pick Basic Dependency:
>>
>> ---
>> Pick Basic Dependency:
>>         There is a Pick Basic dependency from an effect E1 to an effect
>>         E2 if one of the following applies:
>>         1) One of the following applies:
>>                 a) E1 is an Explicit Memory Read effect
>>                 b) E1 is a Register Read effect
>>         2) One of the following applies:
>>                 a) There is a Pick dependency through registers and memory
>>                         from E1 to E2
>>                 b) E1 and E2 are the same effect
> 
> I don't understand this. However, here are the actual words:
> 
> Pick Basic dependency
> 
>      A Pick Basic dependency from a read Register effect or read Memory
>      effect R1 to a Register effect or Memory effect E2 exists if one
>      of the following applies:
> 
>        • There is a Dependency through registers and memory from R1 to E2.
>        • There is an Intrinsic Control dependency from R1 to E2.
>        • There is a Pick Basic dependency from R1 to an Effect E3 and
>          there is a Pick Basic dependency from E3 to E2.
> 
> Seems reasonable enough in context, no? It's either a data dependency,
> a control dependency, or any transitive combination of them.

data dependencies as in stronger than a Dec Alpha does not not honor 
data dependent loads?