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[PATCH 0/6] Getting rid of some zero_ext* patterns


This series teaches combine to behave a bit better, and then takes
advantage of that in the rs6000 backend.

I'll test the combine patches on x86_64-linux before committing,
and will wait a bit for comments anyway.


Segher


 gcc/combine.c               |  146 +++-
 gcc/config/rs6000/rs6000.c  |    4 +-
 gcc/config/rs6000/rs6000.md | 1606 ++++---------------------------------------
 3 files changed, 281 insertions(+), 1475 deletions(-)

-- 
1.8.1.4


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