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[Bug tree-optimization/30375] [4.3 Regression] tree-ssa-dse incorrectly removes struct initialization
- From: "pinskia at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 5 Jan 2007 05:29:37 -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 #6 from pinskia at gcc dot gnu dot org 2007-01-05 05:29 -------
I am in correct in saying the problem is related to the call but instead it is
related to:
# MPT.775_180 = VDEF <MPT.775_179(D)>
info = {};
# MPT.775_181 = VDEF <MPT.775_180>
point = {};
They have the same memory tags which causes the new part of DSE to think the
first store of info to be fully redundant which is wrong.
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Severity|normal |blocker
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30375