Signed-off-by: Samuel Iglesias Gonsálvez <sigles...@igalia.com>
---
src/compiler/nir/nir_lower_double_ops.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/src/compiler/nir/nir_lower_double_ops.c
b/src/compiler/nir/nir_lower_double_ops.c
index b3543bc6963..97b825d2fdb 100644
--- a/src/compiler/nir/nir_lower_double_ops.c
+++ b/src/compiler/nir/nir_lower_double_ops.c
@@ -558,6 +558,18 @@ lower_doubles_instr(nir_alu_instr *instr,
nir_lower_doubles_options options)
unreachable("unhandled opcode");
}
+ bool denorm_flush_to_zero =
+ bld.shader->info.shader_float_controls_execution_mode &
SHADER_DENORM_FLUSH_TO_ZERO_FP64;
+ if (denorm_flush_to_zero) {
+ /* TODO: add support for flushing negative denorms to -0.0 */
+ /* Flush to zero if the result value is a denorm */
+ result = nir_bcsel(&bld,
+ nir_flt(&bld, nir_fabs(&bld, result),
+ nir_imm_double(&bld,
2.22507385850720138309023271733e-308)),
+ nir_imm_double(&bld, 0.0),
+ result);
+ }
+
nir_ssa_def_rewrite_uses(&instr->dest.dest.ssa, nir_src_for_ssa(result));
nir_instr_remove(&instr->instr);
return true;
--
2.19.1
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