> Honza, > > At the Cauldron meeting last week I mentioned that I wasn't able to compile > our "small" weather forecasting program with LTO. > > In the mean time I have read some bug reports with "multiple prevailing ..." > errors, which made me try linking with the 'gold' linker - that worked. > > So the only things building the software that I changed were adding -flto > and -fuse-ld=gold. > > Some statistics of the source code: > > 3902 files totaling 1081944 lines. > > The result works flawlessly. > > Over the weekend I will study the LTO diagnostics to see what decisions were > made with respect to inlining and other optimizations.
Great to hear, thanks! I wonder if it would be possible to have -flto-report -fmem-report -Q output of the link. I am just trying to get more agressive type merging to work but it is C++ only (because i can make use of the ODR rule here) and I wonder how many types you get in other languages (hope is that C++ is the type heaviest of them all) I would be interested if performance looks good, too! Honza > > Thanks ! > > -- > Toon Moene - e-mail: t...@moene.org - phone: +31 346 214290 > Saturnushof 14, 3738 XG Maartensdijk, The Netherlands > At home: http://moene.org/~toon/; weather: http://moene.org/~hirlam/ > Progress of GNU Fortran: http://gcc.gnu.org/wiki/GFortran#news
