Also regarding ARM, PR31849 (http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31849 <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31849>) is a show stopper, at least for some embedded bare metal targets, i.e. arm-elf and arm-none-eabi.

Until size optimization at least matches gcc 4.2, gcc 4.3 will have very limited audience there. I'm not aware of gcc internals in order to help with a fix, but I'm available to help testing, should anyone requires that.

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