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[Bug target/50856] ARM: suboptimal code for absolute difference calculation
- From: "rearnsha at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 24 Oct 2011 17:13:14 +0000
- Subject: [Bug target/50856] ARM: suboptimal code for absolute difference calculation
- Auto-submitted: auto-generated
- References: <bug-50856-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50856
Richard Earnshaw <rearnsha at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |arm
Priority|P3 |P4
Status|UNCONFIRMED |NEW
Last reconfirmed| |2011-10-24
Ever Confirmed|0 |1
--- Comment #1 from Richard Earnshaw <rearnsha at gcc dot gnu.org> 2011-10-24 17:13:14 UTC ---
Confirmed. With the second case we get quite close to getting it right (having
detected that there is an ABS expression, but we fail to merge it with the
original subtract.