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Re: [Bug middle-end/23197] Improve documentation on -fprofile-generate, -fprofile-use
On Aug 2, 2005, at 10:25 AM, anton at samba dot org wrote:
------- Additional Comments From anton at samba dot org 2005-08-02
14:25 -------
Created an attachment (id=9411)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=9411&action=view)
Update profile option documentation
Document all options that -fprofile-generate/-fprofile-usr select:
-fprofile-generate selects -fspeculative-prefetching
-fprofile-use selects -fprofile-values and -fspeculative-prefetching
No use/generate does not select -fspeculative-prefetching. The code to
select it was disabled.
I noticed -fprofile-generate does select -funroll-loops but I dont
know why it
does (so didnt document it)
The reason why it turns on -funroll-loops is because unrolling happens
before profiling is done. Though that was only true in 4.0.x.
-- Pinski