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[Bug tree-optimization/37573] [4.4 Regression] gcc-4.4 regression: incorrect code generation with -O1 -ftree-vectorize
- 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: 19 Sep 2008 17:52:31 -0000
- Subject: [Bug tree-optimization/37573] [4.4 Regression] gcc-4.4 regression: incorrect code generation with -O1 -ftree-vectorize
- References: <bug-37573-15165@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 2008-09-19 17:52 -------
The data dependence on the previous loop is clearly not considered, the loop is
vectorized as if c on the rhs and c on the lhs were different non-overlapping
arrays.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37573