diff options
| author | Jose Maria Casanova Crespo <[email protected]> | 2017-07-01 07:58:26 +0200 |
|---|---|---|
| committer | Jose Maria Casanova Crespo <[email protected]> | 2017-12-06 08:57:18 +0100 |
| commit | 1f440d00d2b6ae6f74fb850ea5acec1f1b5efa58 (patch) | |
| tree | 46460eeeeeeefe82036e98926071b06ba92e441e /src/compiler/nir/nir_opcodes_c.py | |
| parent | 2af63683bc61e1efb8f634697770d314ef07c882 (diff) | |
nir: Handle fp16 rounding modes at nir_type_conversion_op
nir_type_conversion enables new operations to handle rounding modes to
convert to fp16 values. Two new opcodes are enabled nir_op_f2f16_rtne
and nir_op_f2f16_rtz.
The undefined behaviour doesn't has any effect and uses the original
nir_op_f2f16 operation.
v2: Indentation fixed (Jason Ekstrand)
v3: Use explicit case for undefined rounding and assert if
rounding mode is used for non 16-bit float conversions
(Jason Ekstrand)
Reviewed-by: Jason Ekstrand <[email protected]>
Diffstat (limited to 'src/compiler/nir/nir_opcodes_c.py')
| -rw-r--r-- | src/compiler/nir/nir_opcodes_c.py | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/src/compiler/nir/nir_opcodes_c.py b/src/compiler/nir/nir_opcodes_c.py index 02bb4738ed8..c19185534af 100644 --- a/src/compiler/nir/nir_opcodes_c.py +++ b/src/compiler/nir/nir_opcodes_c.py @@ -30,7 +30,7 @@ template = Template(""" #include "nir.h" nir_op -nir_type_conversion_op(nir_alu_type src, nir_alu_type dst) +nir_type_conversion_op(nir_alu_type src, nir_alu_type dst, nir_rounding_mode rnd) { nir_alu_type src_base = (nir_alu_type) nir_alu_type_get_base_type(src); nir_alu_type dst_base = (nir_alu_type) nir_alu_type_get_base_type(dst); @@ -64,7 +64,20 @@ nir_type_conversion_op(nir_alu_type src, nir_alu_type dst) switch (dst_bit_size) { % for dst_bits in [16, 32, 64]: case ${dst_bits}: +% if src_t == 'float' and dst_t == 'float' and dst_bits == 16: + switch(rnd) { +% for rnd_t in ['rtne', 'rtz', 'undef']: + case nir_rounding_mode_${rnd_t}: + return ${'nir_op_{0}2{1}{2}_{3}'.format(src_t[0], dst_t[0], + dst_bits, rnd_t)}; +% endfor + default: + unreachable("Invalid 16-bit nir rounding mode"); + } +% else: + assert(rnd == nir_rounding_mode_undef); return ${'nir_op_{0}2{1}{2}'.format(src_t[0], dst_t[0], dst_bits)}; +% endif % endfor default: unreachable("Invalid nir alu bit size"); |