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[Bug target/54300] [4.7/4.8 Regression] Erroneous optimization causes wrong Neon data management
- From: "rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Sat, 18 Aug 2012 08:12:11 +0000
- Subject: [Bug target/54300] [4.7/4.8 Regression] Erroneous optimization causes wrong Neon data management
- Auto-submitted: auto-generated
- References: <bug-54300-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54300
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2012-08-18
Target Milestone|--- |4.7.2
Ever Confirmed|0 |1
--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-08-18 08:12:11 UTC ---
Your testcase is quite convoluted but it looks you may be violating C
type-based aliasing rules. Thus, try -fno-strict-aliasing.