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Question regarding "patch to remove temporary clobbers in LRA"


Hello Vlad,

Back in October, you added a patch to remove extra clobbers introduced by LRA:
http://gcc.gnu.org/ml/gcc-patches/2012-10/msg02531.html

This also disables some -frename-registers opportunities (a few 100 on
x86-64 for my collection of cc1-i files).

Do you think it's be possible (and worth the effort) to implement
something that keeps clobbers for registers that are live above the
clobber after removing the clobber?

Ciao!
Steven


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