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[Bug target/48941] [arm gcc] NEON: Stack pointer operations performed even tho stack is not accessed at all in function.
- From: "eric.batut at allegorithmic dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 27 Jan 2012 14:11:34 +0000
- Subject: [Bug target/48941] [arm gcc] NEON: Stack pointer operations performed even tho stack is not accessed at all in function.
- Auto-submitted: auto-generated
- References: <bug-48941-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48941
Eric Batut <eric.batut at allegorithmic dot com> changed:
What |Removed |Added
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CC| |eric.batut at allegorithmic
| |dot com, Greta.Yorsh at arm
| |dot com
--- Comment #8 from Eric Batut <eric.batut at allegorithmic dot com> 2012-01-27 14:11:34 UTC ---
Any chance of seeing the work on this restart ?
I found this bug while looking for something that would help (I raised bug
51980 for the same kind of issue, still seen on trunk), but the patch attached
to this bug does not solve the issue for code that is rich with zip/uzp/trn
intrinsics.
This is a major limitation of arm-gcc with respect to performance-critical Neon
code in my opinion.