[LLVMdev] Named Register Implementation

[Krzysztof Parzyszek]

On 3/28/2014 11:09 AM, Renato Golin wrote:
> On 28 March 2014 15:56, Krzysztof Parzyszek <kparzysz at codeaurora.org> wrote:
>> How are you going to represent the side-effects of such builtins?
>
> Do you mean the possible adverse effects they can have on the program
> if you write to the wrong register at the wrong time? I don't think we
> should represent it at all.

I mean how do you make sure that the "write" builtin does not look like 
dead code, and at the same time it's not treated as something that 
"changes everything".  Do you expect a read of "sp" to have a dependency 
with a write of "ax"?  If not, how is that going to be communicated to 
the optimizer?

-K

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