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authorKenneth Graunke <[email protected]>2015-09-19 04:40:07 -0700
committerKenneth Graunke <[email protected]>2015-09-23 11:00:00 -0700
commitfbaa1b19d7accc5de95d6804525aad5b95abba72 (patch)
tree721f69fb7c82f57c7588baa7f860f20ac17e7d4d /src/glsl/nir/nir.h
parent6560838703431f89c47d68822758bc76fd34c355 (diff)
nir/cf: Fix dominance metadata in the dead control flow pass.
The NIR control flow modification API churns the block structure, splitting blocks, stitching them back together, and so on. Preserving information about block dominance is hard (and probably not worthwhile). This patch makes nir_cf_extract() throw away all metadata, like we do when adding/removing jumps. We then make the dead control flow pass compute dominance information right before it uses it. This is necessary because earlier work by the pass may have invalidated it. Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Connor Abbott <[email protected]> Reviewed-by: Jason Ekstrand <[email protected]>
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