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[Bug rtl-optimization/54910] ARM: Missed optimization of very simple ctz function
- From: "linux at horizon dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 29 Nov 2012 11:12:52 +0000
- Subject: [Bug rtl-optimization/54910] ARM: Missed optimization of very simple ctz function
- Auto-submitted: auto-generated
- References: <bug-54910-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54910
--- Comment #3 from George Spelvin <linux at horizon dot com> 2012-11-29 11:12:52 UTC ---
... and this particular case wouldn't arise, since Thumb-2 (ARMv7) implies the
CLZ instruction (ARMv5), and I wouldn't need this table-based implementation if
I had CLZ. :-)