13 Mar
2018
13 Mar
'18
3:31 a.m.
https://bugs.freedesktop.org/show_bug.cgi?id=102905
--- Comment #3 from Roland Scheidegger sroland@vmware.com --- (In reply to iive from comment #2)
The problem that causes this bug is when the first half of the above code, changes the condition check in the second. Something that will not happen, if "cndge" is executed as a single VLIW. Aka I have "cndge r0.xy, r0.xx, |r2|, r3" that is turned into: mov r12.x, |r2| cndge r0.x, r0.x, r12, r3 mov r12.y, |r2| cndge r0.y, r0.x, r12, r3
I think that we should copy the whole register first. The generated code should looks like this:
mov r12, |r2| cndge r0.xy, r1, r12, r3
That analysis looks spot on. I've just sent a patch to mesa-dev which should fix this, can you verify it works?
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