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[Bug tree-optimization/30375] [4.3 Regression] tree-ssa-dse incorrectly removes struct initialization
- From: "rguenth at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 31 Aug 2007 14:27:00 -0000
- Subject: [Bug tree-optimization/30375] [4.3 Regression] tree-ssa-dse incorrectly removes struct initialization
- References: <bug-30375-3760@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #24 from rguenth at gcc dot gnu dot org 2007-08-31 14:26 -------
Ugh. But of course memory_address_same only checks what the name suggests.
Nowhere do we check for intermediate uses. That whole-aggregate DSE just
cannot work at all.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30375