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]>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/compiler/spirv/vtn_alu.c b/src/compiler/spirv/vtn_alu.c
index 7653b8acfa1..fa4dbfecddd 100644
--- a/src/compiler/spirv/vtn_alu.c
+++ b/src/compiler/spirv/vtn_alu.c
@@ -356,7 +356,7 @@ vtn_nir_alu_op_for_spirv_opcode(struct vtn_builder *b,
    case SpvOpConvertUToF:
    case SpvOpSConvert:
    case SpvOpFConvert:
-      return nir_type_conversion_op(src, dst);
+      return nir_type_conversion_op(src, dst, nir_rounding_mode_undef);
 
    /* Derivatives: */
    case SpvOpDPdx:         return nir_op_fddx;