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[RFC] combine: Handle zero_extend without subreg in change_zero_ext.


The attached patch deals with another type of zero_extend that is
not yet handled in change_zero_ext, i.e. (zero_extend
(pseudoreg)), without a "subreg" in between.  What do you think?
(Mostly untested yet.)

Ciao

Dominik ^_^  ^_^

-- 

Dominik Vogt
IBM Germany

Attachment: 0001-combine-Handle-zero_extend-without-subreg-in-change_.patch
Description: Text document

Attachment: 0001-ChangeLog
Description: Text document


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