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[Bug tree-optimization/71437] [7 regression] Performance regression after r235817
- From: "amker at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 17 Jan 2017 19:44:27 +0000
- Subject: [Bug tree-optimization/71437] [7 regression] Performance regression after r235817
- Auto-submitted: auto-generated
- References: <bug-71437-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71437
--- Comment #10 from amker at gcc dot gnu.org ---
(In reply to amker from comment #9)
> Root cause should be in VRP, looks like the iterative algorithm depends on
> order of ssa operands and computes different range.
Testing a patch, though is kind of a workaround.