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[Bug tree-optimization/17064] -falias-noargument-global doesn't eliminate dead stores/loads
- From: "dje 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 Jan 2006 00:49:19 -0000
- Subject: [Bug tree-optimization/17064] -falias-noargument-global doesn't eliminate dead stores/loads
- References: <bug-17064-6527@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #14 from dje at gcc dot gnu dot org 2006-01-31 00:49 -------
The parameter is considered global because it is marked DECL_EXTERNAL. And it
is marked EXTERNAL in tree-ssa-structalias.c:
heapvar = create_tmp_var_raw (TREE_TYPE (TREE_TYPE (t)), PARM_NOALIAS");
DECL_EXTERNAL (heapvar) = 1;
Should the temp variable always be marked external?
--
dje at gcc dot gnu dot org changed:
What |Removed |Added
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CC| |dje at gcc dot gnu dot org,
| |dberlin at gcc dot gnu dot
| |org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17064