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anl_0_7
2016 Mar 04
2
PHI node to different register class vs TailDuplication
Hi,
We're having an issue with TailDuplication in our out-of-tree target and
it's this PHI-node that seems to be the cause of the trouble:
%vreg2<def> = PHI %vreg0, <BB#2>, %vreg1, <BB#3>; rN:%vreg2
aNlh_0_7:%vreg0 aNlh_rN:%vreg1
Note that the defined %vreg2 has register class "rN" while the read
%vreg0 has register class "aNlh_0_7". "rN" and "aNlh_0_7" are disjoint.
Is such a PHI node ok?
If it is, then there is a bug in TailDuplication.
Before TailDuplicat...