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nir/constant_expressions: flush input denorms if denorms have to be flushed

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Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/39180>
This commit is contained in:
Georg Lehmann 2026-01-14 14:52:28 +01:00 • committed by Marge Bot
parent 7e93aebbec
commit d7e88c0ccd
1 changed files with 14 additions and 5 deletions
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19
src/compiler/nir/nir_constant_expressions.py
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@ -91,6 +91,15 @@ constant_denorm_flush_to_zero(nir_const_value *value, unsigned bit_size)
}
}
static double
get_float_source(nir_const_value value, unsigned execution_mode, unsigned bit_size)
{
if (nir_is_denorm_flush_to_zero(execution_mode, bit_size))
constant_denorm_flush_to_zero(&value, bit_size);
return nir_const_value_as_float(value, bit_size);
}
/**
* Evaluate one component of packSnorm4x8.
*/
@ -455,8 +464,8 @@ struct ${type}${width}_vec {
% if input_types[j] == "int1":
/* 1-bit integers use a 0/-1 convention */
-(int1_t)_src[${j}][${k}].b,
% elif input_types[j] == "float16":
_mesa_half_to_float(_src[${j}][${k}].u16),
% elif type_base_type(input_types[j]) == "float":
get_float_source(_src[${j}][${k}], execution_mode, ${type_size(input_types[j])}),
% else:
_src[${j}][${k}].${get_const_field(input_types[j])},
% endif
@ -481,9 +490,9 @@ struct ${type}${width}_vec {
% elif input_types[j] == "int1":
/* 1-bit integers use a 0/-1 convention */
const int1_t src${j} = -(int1_t)_src[${j}][_i].b;
% elif input_types[j] == "float16":
const float src${j} =
_mesa_half_to_float(_src[${j}][_i].u16);
% elif type_base_type(input_types[j]) == "float":
const ${input_types[j]}_t src${j} =
get_float_source(_src[${j}][_i], execution_mode, ${type_size(input_types[j])});
% else:
const ${input_types[j]}_t src${j} =
_src[${j}][_i].${get_const_field(input_types[j])};