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[Bug tree-optimization/21596] [4.0/4.1/4.2/4.3 Regression] extra temporaries when using global register variables
- From: "amacleod at redhat dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 6 Mar 2007 15:01:58 -0000
- Subject: [Bug tree-optimization/21596] [4.0/4.1/4.2/4.3 Regression] extra temporaries when using global register variables
- References: <bug-21596-119@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #9 from amacleod at redhat dot com 2007-03-06 15:01 -------
actually, mainline isn't working either. A closer examination shows the code
generated has an extra offset of -4 in the compare that shouldn't be there.
This patch triggers a bug in rtl's fwprop pass.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21596