[Bug rtl-optimization/17236] inefficient code for long long multiply on x86

[bonzini at gnu dot org]

------- Comment #9 from bonzini at gnu dot org  2007-12-18 08:05 -------
Uros mentioned offlist that he wanted to hijack fwprop to always propagate
stack slots into instructions.

It would be a relatively useful piece of infrastructure to have a flag in MEMs
that marks on-stack MEMs, because other MEMs definitely must not be propagated
blindly.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17236