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Re: [avr-gcc-list] [AVR] RTL prologue/epilogue ver.3


From: Georg-Johann Lay
Subject: Re: [avr-gcc-list] [AVR] RTL prologue/epilogue ver.3
Date: Fri, 14 Oct 2011 09:50:47 +0200
User-agent: Thunderbird 2.0.0.24 (X11/20100302)

Boyapati, Anitha schrieb:

>> I am completely in line with Eric: Your debugger will have to get smarter
>> and  not the compiler get dumb again.
>> 
>> Johann
> 
> As it was put, it is more of a performance question than about the 
> correctness of it. I am not sure what exactly the issue is, but you are 
> right that one cannot rely on rcall/ret matching sequences.

You mean the performance of the *debugger* ???
Shouldn't be an issue as the code just has to be scanned once (statically).

> At first glance it appeared that the although we are achieving both 
> performance and size gain using rcall for stack allocation, the code looked
> very misleading.

Optimized code is to perform nicely, not to win beauty contest ;-)

Johann

> 
> Anitha
> 




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