diff --git a/src/compiler/nir/nir_range_analysis.c b/src/compiler/nir/nir_range_analysis.c index 051eb77a8e6..a215ea0f952 100644 --- a/src/compiler/nir/nir_range_analysis.c +++ b/src/compiler/nir/nir_range_analysis.c @@ -1751,12 +1751,19 @@ get_intrinsic_uub(struct analysis_state *state, struct uub_query q, uint32_t *re case nir_intrinsic_inclusive_scan: case nir_intrinsic_exclusive_scan: { nir_op op = nir_intrinsic_reduction_op(intrin); + unsigned bit_size = q.scalar.def->bit_size; + bool exclusive = intrin->intrinsic == nir_intrinsic_exclusive_scan; + if (op == nir_op_umin || op == nir_op_umax || op == nir_op_imin || op == nir_op_imax) { if (!q.head.pushed_queries) { push_uub_query(state, nir_get_scalar(intrin->src[0].ssa, q.scalar.comp)); return; } else { *result = src[0]; + if (exclusive) { + uint32_t identity = nir_const_value_as_uint(nir_alu_binop_identity(op, bit_size), bit_size); + *result = MAX2(*result, identity); + } } } break;