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[Bug tree-optimization/18463] [4.0 Regression] suboptimal use of fancy x86 addressing modes
- From: "rakdver at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 19 Sep 2005 15:19:26 -0000
- Subject: [Bug tree-optimization/18463] [4.0 Regression] suboptimal use of fancy x86 addressing modes
- References: <20041113170938.18463.steven@gcc.gnu.org>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From rakdver at gcc dot gnu dot org 2005-09-19 15:19 -------
Another patch that improves the code on i686:
http://gcc.gnu.org/ml/gcc-patches/2005-09/msg01159.html
(with -O2 -fomit-frame-pointer:)
.L4:
movl (%ebp,%edx,4), %eax
movl %eax, (%esi,%edx,4)
movl (%edi,%edx,4), %eax
movl %eax, (%ebx,%edx,4)
incl %edx
cmpl %edx, %ecx
jne .L4
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18463