nir: Add nir_before/after_impl cursors
What does this MR do and why?
nir: Add nir_before/after_impl cursors
These are common enough to merit their own helpers.
Signed-off-by: Alyssa Rosenzweig alyssa@rosenzweig.io
nir: Add nir_before/after_impl cursors
These are common enough to merit their own helpers.
Signed-off-by: Alyssa Rosenzweig alyssa@rosenzweig.io