--- Comment #4 from bernds at codesourcery dot com 2010-04-22 10:01 ---
Fixed now.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42498
--- Comment #3 from rguenth at gcc dot gnu dot org 2009-12-31 15:30 ---
This is because widening multiplication is not detected if there are
more-than-once used sub-expressions.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42498
--- Comment #2 from ramana at gcc dot gnu dot org 2009-12-29 23:21 ---
This looks like a DUP of PR29274.
*** This bug has been marked as a duplicate of 29274 ***
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ramana at gcc dot gnu dot org changed:
What|Removed |Added
--- Comment #1 from markusl dot se78 at gmail dot com 2009-12-28 17:59
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Another solution might be to have a define_insn_and_split for a 64x64-64bit
multiply allowing the combiner to do its job combining into a widening
multiplication and if this fails the insn will later be split
