Displaying 1 result from an estimated 1 matches for "renameindependentsubregs".
2020 Nov 19
1
Problems with undef subranges in identity copies
...2B-phi 1 at 96r 2 at 16r
L0000000000000003 [32B,80B:0) 0 at 32B-phi // sub0
This remaining [32B,80B:0) across %bb.1 is a fake phi-only segment. If
I freshly recompute LiveIntervals, the subrange is empty as it should
be. The verifier doesn't care about this, however it does end up
confusing RenameIndependentSubregs. After RenameIndependentSubregs,
this becomes
%0 [24r,24d:0)[104r,104d:1) 0 at 24r 1 at 104r L0000000000000003
[24r,24d:1)[104r,104d:2) which fails the verifier with "Multiple
connected components in live interval".
I'm able to hack this segment out in simple situations when the
ide...