On Apr 21, 2010, at 11:11 AM, Vladimir Makarov wrote: >> >> This is definitely interesting, but you're also comparing apples and oranges >> here (for both compile time and performance). Can you get numbers showing >> GCC -O3 and dragonegg with LTO to get a better comparison? >> >> > Dragonegg does not work with -flto. It generates assembler code on which gas > complaints (a lot of non-assembler code like target data-layout which are not > in comments).
Ok, I didn't know that didn't get wired up. I'm not familiar with dragonegg, it might require gold with the llvm lto gold plugin or something. > So I'll do gcc -O3 without -flto. I don't think it will change average > SPECINT2000 rate significantly (although it can change separte benchmark > significantly) but it will make gcc compiler much faster (may be 2 times > because I did not use -fwhole-program). I'll post the results in an hour. Sounds good, thanks! I suspect the gcc build times will improve. -Chris
