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-rw-r--r--src/glsl/nir/nir_opt_algebraic.py5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/glsl/nir/nir_opt_algebraic.py b/src/glsl/nir/nir_opt_algebraic.py
index 42846e1202b..9c62b283634 100644
--- a/src/glsl/nir/nir_opt_algebraic.py
+++ b/src/glsl/nir/nir_opt_algebraic.py
@@ -106,6 +106,11 @@ optimizations = [
(('fpow', a, 1.0), a),
(('fpow', a, 2.0), ('fmul', a, a)),
(('fpow', 2.0, a), ('fexp2', a)),
+ # Division and reciprocal
+ (('fdiv', 1.0, a), ('frcp', a)),
+ (('frcp', ('frcp', a)), a),
+ (('frcp', ('fsqrt', a)), ('frsq', a)),
+ (('frcp', ('frsq', a)), ('fsqrt', a)),
# This one may not be exact
(('feq', ('fadd', a, b), 0.0), ('feq', a, ('fneg', b))),