bifrost: Add lowering for b2i32

Since the bool representation is 0/~0, we can convert to int
just by &1.

Signed-off-by: Chris Forbes <chrisforbes@google.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6079>

diff --git a/src/panfrost/bifrost/bifrost_nir_algebraic.py b/src/panfrost/bifrost/bifrost_nir_algebraic.py
index d28c82d401ab41555f74c9890501baf50fa9c11a..6f3f6eee1a901fe5a214322ac2b9549f973267ed 100644 (file)
--- a/src/panfrost/bifrost/bifrost_nir_algebraic.py
+++ b/src/panfrost/bifrost/bifrost_nir_algebraic.py
@@ -87,7 +87,8 @@ for op in SPECIAL:
         converts += [((op + '@16', a), ('f2f16', (op, ('f2f32', a))))]
 
 converts += [(('f2b32', a), ('fne32', a, 0.0)),
-             (('i2b32', a), ('ine32', a, 0))]
+             (('i2b32', a), ('ine32', a, 0)),
+             (('b2i32', a), ('iand', 'a@32', 1))]
 
 def main():
     parser = argparse.ArgumentParser()