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[Bug debug/44694] [4.5/4.6 Regression] Long var tracking compile time of GiNaC tests
- From: "jakub at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 29 Jun 2010 06:28:52 -0000
- Subject: [Bug debug/44694] [4.5/4.6 Regression] Long var tracking compile time of GiNaC tests
- References: <bug-44694-176@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #5 from jakub at gcc dot gnu dot org 2010-06-29 06:28 -------
The extremely long location lists are caused mainly by reverse_op created
equivalences. Wonder whether we shouldn't on RHS replace sp and sp + const_int
with framep and framep + const_int even outside of memory addresses and of
course not do reverse_op if the register is framep - the framep is always
computable, so it isn't useful to reverse it.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44694