On 05 Oct 2008, at 11:35, Vincent Snijders wrote:
Jonas Maebe schreef:
On 05 Oct 2008, at 11:09, Vincent Snijders wrote:
If I look at http://svn.freepascal.org/cgi-bin/viewvc.cgi/tags/release_2_2_0/compiler/x86_64/cpuinfo.pas?view=markup
it seems that in fpc 2.2.0 regvars are not enabled. Why not?
Because they didn't work properly with x86_64 at first. It was
fixed later, but enabling them by default is not a fix so it was
not merged to the fixes branch (and since you can explicitly enable
them using -Ooregvar, it's even less required to merge this change
back).
In fpc 2.2.0, a first release on the fixes_2_2 branch, do regvars
properly or not?
I know they work fine in 2.3.1:
http://www.freepascal.org/testsuite/cgi-bin/testsuite.cgi?action=1&run1id=30179&run2id=30188&noskipped=1&failedonly=1
The only difference is that apparently profiling doesn't work with
regvars on.
I'm not aware of any related fixes which have not been merged to the
fixes branch, but I don't know whether all of those fixes were merged
back before 2.2.0. I guess they should work fine there, though.
Your answer seems to indicate they do, but that they were not
enabled by default (yet).
They're not enabled by default in 2.2.2 either, for that matter.
Jonas
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