Re: [avr-gcc-list] Most reliable version of avr-gcc?
You might find Table 1 of our recent paper interesting. The paper's here: http://www.cs.utah.edu/~regehr/papers/emsoft08-preprint.pdf There are three lines that show empirical failure rates for avr-gcc 3.4.3, 4.1.2, and 4.2.2, in terms of volatile errors and regular old miscompilations. It is interesting that the functional error rate for avr-gcc is significantly higher than x86-gcc. My guess is that the miscompilations that we are seeing are the known problems in the avr backend that are sometimes discussed on this list (last discussed in the context of the new integrated register allocator, I think). John Regehr On Wed, 17 Dec 2008, David Carr wrote: By reliability, I mean least probability of undetected errors in machine code generation. IE: The machine code conforms to the source code. Thanks, -DC Weddington, Eric wrote: -Original Message- From: avr-gcc-list-bounces+eweddington=cso.atmel@nongnu.org [mailto:avr-gcc-list-bounces+eweddington=cso.atmel@nongnu. org] On Behalf Of David Carr Sent: Wednesday, December 17, 2008 2:34 PM To: avr-gcc-list@nongnu.org Subject: [avr-gcc-list] Most reliable version of avr-gcc? If one were to compile a program for the AVR where reliability was far more important than code size or performance optimizations, what version of avr-gcc would you choose? What do you mean by 'reliability'? ___ AVR-GCC-list mailing list AVR-GCC-list@nongnu.org http://lists.nongnu.org/mailman/listinfo/avr-gcc-list ___ AVR-GCC-list mailing list AVR-GCC-list@nongnu.org http://lists.nongnu.org/mailman/listinfo/avr-gcc-list
Re: [avr-gcc-list] Most reliable version of avr-gcc?
On 17 Dec 2008 at 15:34, David Carr wrote: If one were to compile a program for the AVR where reliability was far more important than code size or performance optimizations, what version of avr-gcc would you choose? You should use more than one version. You would also need test cases so that you can check that your code produces the required result using ALL the versions that you have used to compile the code. Regards Anton Erasmus -- A J Erasmus ___ AVR-GCC-list mailing list AVR-GCC-list@nongnu.org http://lists.nongnu.org/mailman/listinfo/avr-gcc-list
Re: [avr-gcc-list] Most reliable version of avr-gcc?
You must also consider if your target MCU is supported by a particular version of GCC. If you have a target supported only in the last versions, your choice between GCC versions will narrow. Bernard David Carr wrote: By reliability, I mean least probability of undetected errors in machine code generation. IE: The machine code conforms to the source code. Thanks, -DC ___ AVR-GCC-list mailing list AVR-GCC-list@nongnu.org http://lists.nongnu.org/mailman/listinfo/avr-gcc-list
Re: [avr-gcc-list] Most reliable version of avr-gcc?
Hi, We all know, that in general not always the most recent version is the most reliable version. As of a Linux distrib, other software, automobile, wine :-) , etc. We can recently read/hear/experience about these, independently from the special test cases. I think it's the base of David 's question. Peter Anton Erasmus írta: On 17 Dec 2008 at 15:34, David Carr wrote: If one were to compile a program for the AVR where reliability was far more important than code size or performance optimizations, what version of avr-gcc would you choose? You should use more than one version. You would also need test cases so that you can check that your code produces the required result using ALL the versions that you have used to compile the code. Regards Anton Erasmus ___ AVR-GCC-list mailing list AVR-GCC-list@nongnu.org http://lists.nongnu.org/mailman/listinfo/avr-gcc-list
[avr-gcc-list] Most reliable version of avr-gcc?
If one were to compile a program for the AVR where reliability was far more important than code size or performance optimizations, what version of avr-gcc would you choose? Thanks for your insight, -DC ___ AVR-GCC-list mailing list AVR-GCC-list@nongnu.org http://lists.nongnu.org/mailman/listinfo/avr-gcc-list
RE: [avr-gcc-list] Most reliable version of avr-gcc?
-Original Message- From: avr-gcc-list-bounces+eweddington=cso.atmel@nongnu.org [mailto:avr-gcc-list-bounces+eweddington=cso.atmel@nongnu. org] On Behalf Of David Carr Sent: Wednesday, December 17, 2008 2:34 PM To: avr-gcc-list@nongnu.org Subject: [avr-gcc-list] Most reliable version of avr-gcc? If one were to compile a program for the AVR where reliability was far more important than code size or performance optimizations, what version of avr-gcc would you choose? What do you mean by 'reliability'? ___ AVR-GCC-list mailing list AVR-GCC-list@nongnu.org http://lists.nongnu.org/mailman/listinfo/avr-gcc-list
