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[Bug rtl-optimization/17236] inefficient code for long long multiply on x86
- From: "ebotcazou at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 18 Dec 2007 08:10:09 -0000
- Subject: [Bug rtl-optimization/17236] inefficient code for long long multiply on x86
- References: <bug-17236-1008@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #10 from ebotcazou at gcc dot gnu dot org 2007-12-18 08:10 -------
> 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.
Depending on your needs, MEM_NOTRAP_P could be a good approximation.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17236