GCC vs Keil code generation

RE: GCC vs Keil code generation

Krzysztof Zaraska — Wed, 04 Oct 2017 23:24:23 GMT

Once I've hit the 32KB limit I've spent two weeks evaluating gcc-based solutions... and ended up buying Keil. It's not about the compiler, it's about the debugger.

RE: GCC vs Keil code generation

endnode — Wed, 04 Oct 2017 19:15:22 GMT

I personally prefer GCC because of free use and openness but both Keil and IAR are very good commercial products with strengths and I've seen projects where investment into their license was justified by size or performance constrains (although GCC guys are doing a lot in past 5 years so gap is getting closer and closer). Until you fit into 32kB Keil is good option (if you can survive the IDE, it drives me absolutely crazy:) Cheers

RE: GCC vs Keil code generation

alikob — Wed, 04 Oct 2017 19:11:29 GMT

Thanks endnode, and you indeed had a valid point in there. for now I am very happy with Keil, till I hit the 32K mark, Cheers :)

RE: GCC vs Keil code generation

endnode — Wed, 04 Oct 2017 19:08:42 GMT

(if you set decent optimizations modern compilers aren't so far either;)

RE: GCC vs Keil code generation

alikob — Wed, 04 Oct 2017 19:04:47 GMT

well, there are pretty close: link text

RE: GCC vs Keil code generation

endnode — Wed, 04 Oct 2017 18:33:55 GMT

Come on, this is well known: different compiler/linker makes different product including different performance and size! Read the blog post from Nordic (and many many more on the internet).

(It's like buying Mercedes Benz and Audi cars and being surprised that their engines accelerate differently;)

RE: GCC vs Keil code generation

Krzysztof Zaraska — Wed, 04 Oct 2017 17:58:25 GMT

In gcc -Os tells the compiler to optimize for size.