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[Bug target/19922] xor is enclosed in loop, and exectuted on each iteration of for statement
- From: "gj at pointblue dot com dot pl" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 12 Feb 2005 15:46:19 -0000
- Subject: [Bug target/19922] xor is enclosed in loop, and exectuted on each iteration of for statement
- References: <20050212140734.19922.gj@pointblue.com.pl>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From gj at pointblue dot com dot pl 2005-02-12 15:46 -------
I thought that -mtune=pentium3 should get him enough hints to use sse. Some
warning would be great than if what you say is true about -ftree-vectorize!
Besides, -msse doesn't turn on vectorization here either. But it should
probably. That would do 2 doubles cleared at one shot, rather than using
integer twice it could be cleared using mmx or sse registers.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19922