From: Sergei Shtylyov <sergei.shtyl...@cogentembedded.com> Date: Sun, 13 Aug 2017 00:03:06 +0300
> Looks like gcc isn't always able to figure out that 3 *if* branches in > of_phy_register_fixed_link() calling fixed_phy_register() at their ends > are similar enough and thus can be merged. The "manual" merge saves 40 > bytes of the object code (AArch64 gcc 4.8.5), and still saves 12 bytes > even if gcc was able to merge the branch tails (ARM gcc 4.8.5)... > > Signed-off-by: Sergei Shtylyov <sergei.shtyl...@cogentembedded.com> Applied, but if two instances of the "same" compiler just with different targets changes the optimization, it could be because of a tradeoff which is specific to parameters expressed in that target's backend. So in the future we should probably back away from trying to "help" the compiler in this way.
