[Bug target/39137] [4.4 Regression] -mpreferred-stack-boundary=2 causes lots of dynamic realign

[hjl dot tools at gmail dot com]

------- Comment #4 from hjl dot tools at gmail dot com  2009-02-09 15:21 -------
(In reply to comment #3)
> How can #1 cause a problem with -ftree-vectorize (especially when it hasn't

I don't believe "-mpreferred-stack-boundary=2 -ftree-vectorize" works
well in gcc 4.3.

> been problem in 4.3 and earlier)?  We'd do realignment for V[1248]* modes, just
> not for DImode/DFmode...
> 

Xuepeng, Joey, can you verify align DImode/DFmode to 4 bytes on stack,
when "-Os -mpreferred-stack-boundary=2" is used, won't cause prolems with
-ftree-vectorize?


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39137