On 2011/1/25 04:22, Wolfgang Denk wrote: > Hello, > > could you please provide some comments about the state of "-Os" > (optimising for size) in the gcc 4.5.x versions of Linaro's tool > chain? > > It appears there are a number of issues with recent versions of GCC > that get triggered when optimising for size, for example > > http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45052 > > http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44392 > > Some other projects like the Linux Foundation driven Poky (resp. > Yocto project) capitulated and stopped using -Os, see for example > here: > http://thread.gmane.org/gmane.linux.embedded.poky/2311/focus=2565 > > > On the other hand, I can see that Linaro even adds improvements for > "-Os", see for example here: > http://thread.gmane.org/gmane.linux.linaro.toolchain/367 > > > So I wonder what the state of these problems with "-Os" is in the > Linaro tool chain? Have these issues been solved, and is "-Os" > reliably working with the Linaro tool chain?
Well, a check of the ChangeLogs show that PR45052 should be fixed on the upstream 4.5 branch, which Linaro 4.5 has updated past by now. PR44392 is fixed on trunk, though not backported to 4.5 yet. Ramana, I see this was fixed by you upstream, care to backport this? (maybe on upstream gcc-4_5-branch too) Do you have any more specific cases/PRs, or is this all that's on your current list? Thanks, Chung-Lin _______________________________________________ linaro-toolchain mailing list linaro-toolchain@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-toolchain
