------- Additional Comments From pinskia at gcc dot gnu dot org 2005-07-18
06:49 -------
(In reply to comment #2)
> I have tested gcc snapshot 'gcc version 4.1.0 20050716 (experimental)',
> with 'gcc -O2 -ftree-vectorize -msse2' and it still produces code with both %
> eax and %edx used.
>
> Andrew, which gcc version and compile flags have you used to produce your asm
> code?
Oh, I have a local patch which will cause this, woops:
Index: config/i386/i386.c
===============================================================
====
RCS file: /cvs/gcc/gcc/gcc/config/i386/i386.c,v
retrieving revision 1.842
diff -u -p -r1.842 i386.c
--- config/i386/i386.c 14 Jul 2005 07:46:16 -0000 1.842
+++ config/i386/i386.c 18 Jul 2005 06:48:33 -0000
@@ -5044,6 +5044,10 @@ ix86_address_cost (rtx x)
/* More complex memory references are better. */
if (parts.disp && parts.disp != const0_rtx)
cost--;
+
+ if (parts.scale != 1)
+ cost--;
+
if (parts.seg != SEG_DEFAULT)
cost--;
--
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed| |1
Last reconfirmed|0000-00-00 00:00:00 |2005-07-18 06:49:26
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22497
