diff --git a/src/compiler/nir/nir_opt_algebraic.py b/src/compiler/nir/nir_opt_algebraic.py
index 072b9929480..9d2fbb55c05 100644
--- a/src/compiler/nir/nir_opt_algebraic.py
+++ b/src/compiler/nir/nir_opt_algebraic.py
@@ -129,6 +129,8 @@ optimizations = [
     '!options->lower_bitops'),
    (('irem', a, '#b(is_neg_power_of_two)'), ('irem', a, ('iabs', b)), '!options->lower_bitops'),
 
+   (('~fmul', ('fsign', a), ('ffloor', ('fadd', ('fabs', a), 0.5))), ('ftrunc', ('fadd', a, ('fmul', ('fsign', a), 0.5))), '!options->lower_ftrunc || options->lower_ffloor'),
+
    (('~fneg', ('fneg', a)), a),
    (('ineg', ('ineg', a)), a),
    (('fabs', ('fneg', a)), ('fabs', a)),