---
src/compiler/nir/nir_opt_algebraic.py | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/src/compiler/nir/nir_opt_algebraic.py
b/src/compiler/nir/nir_opt_algebraic.py
index 6c767501a51..f0861c4411d 100644
--- a/src/compiler/nir/nir_opt_algebraic.py
+++ b/src/compiler/nir/nir_opt_algebraic.py
@@ -436,6 +436,7 @@ optimizations = [
(('imul', ('b2i', a), ('b2i', b)), ('b2i', ('iand', a, b))),
(('fmul', ('b2f', a), ('b2f', b)), ('b2f', ('iand', a, b))),
(('fsat', ('fadd', ('b2f', a), ('b2f', b))), ('b2f', ('ior', a, b))),
+ (('iand', ('ineg', ('b2i', a)), '1.0@32'), ('b2f', a),
'!options->lower_b2f'),
# True/False are ~0 and 0 in NIR. b2i of True is 1, and -1 is ~0 (True).
(('flt', ('fneg', ('b2f', a)), 0), a), # Generated by TGSI KILL_IF.
(('flt', ('fsub', 0.0, ('b2f', a)), 0), a), # Generated by TGSI KILL_IF.
@@ -914,6 +915,9 @@ late_optimizations = [
# we do these late so that we don't get in the way of creating ffmas
(('fmin', ('fadd(is_used_once)', '#c', a), ('fadd(is_used_once)', '#c',
b)), ('fadd', c, ('fmin', a, b))),
(('fmax', ('fadd(is_used_once)', '#c', a), ('fadd(is_used_once)', '#c',
b)), ('fadd', c, ('fmax', a, b))),
+
+ # Lowered for backends without a dedicated b2f instruction
+ (('b2f@32', a), ('bcsel', a, 1.0, 0.0), 'options->lower_b2f'),
]
print(nir_algebraic.AlgebraicPass("nir_opt_algebraic", optimizations).render())
--
2.19.1
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