[Bug target/42498] GCC can't use smull to compute int * int --> long long

[rguenth at gcc dot gnu dot org]

------- 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