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[Bug middle-end/42505] [4.4 / 4.5 regression] loop canonicalization causes a lot of unnecessary temporary variables
- From: "rearnsha at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 7 Jan 2010 11:45:25 -0000
- Subject: [Bug middle-end/42505] [4.4 / 4.5 regression] loop canonicalization causes a lot of unnecessary temporary variables
- References: <bug-42505-17572@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #3 from rearnsha at gcc dot gnu dot org 2010-01-07 11:45 -------
(In reply to comment #2)
> 1. Yes, the flags used are "-mthumb -Os -march=armv5te".
> 4c: e8bd41f0 pop {r4, r5, r6, r7, r8, lr}
> 50: e12fff1e bx lr
>
This looks more like a return sequence for v4t than v5te -- why isn't the PC
popped directly?
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42505