[Bug target/19922] xor is enclosed in loop, and exectuted on each iteration of for statement

[gj at pointblue dot com dot pl]

------- 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