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spirv,nir: emit saturating float8 cmat convert

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Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/35434>
This commit is contained in:
Georg Lehmann 2025-06-07 20:26:38 +02:00 • committed by Marge Bot
parent d0ac1cfb0d
commit 30ec9ed1cf
2 changed files with 4 additions and 2 deletions
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2
src/compiler/nir/nir_intrinsics.py
View file

@ -1358,7 +1358,7 @@ intrinsic("cmat_load", src_comp=[-1, -1, 1], indices=[MATRIX_LAYOUT])
intrinsic("cmat_store", src_comp=[-1, -1, 1], indices=[MATRIX_LAYOUT])
intrinsic("cmat_length", src_comp=[], dest_comp=1, indices=[CMAT_DESC], bit_sizes=[32])
intrinsic("cmat_muladd", src_comp=[-1, -1, -1, -1], indices=[SATURATE, CMAT_SIGNED_MASK])
intrinsic("cmat_convert", src_comp=[-1, -1], indices=[CMAT_SIGNED_MASK])
intrinsic("cmat_convert", src_comp=[-1, -1], indices=[SATURATE, CMAT_SIGNED_MASK])
intrinsic("cmat_unary_op", src_comp=[-1, -1], indices=[ALU_OP])
intrinsic("cmat_binary_op", src_comp=[-1, -1, -1], indices=[ALU_OP])
intrinsic("cmat_scalar_op", src_comp=[-1, -1, -1], indices=[ALU_OP])

4
src/compiler/spirv/vtn_cmat.c
View file

@ -201,6 +201,7 @@ vtn_handle_cooperative_alu(struct vtn_builder *b, struct vtn_value *dest_val,
case SpvOpFConvert: {
struct vtn_type *dst_type = vtn_get_type(b, w[1]);
nir_deref_instr *src = vtn_get_cmat_deref(b, w[3]);
struct vtn_value *dest_val = vtn_untyped_value(b, w[2]);
/* The Convert operations define whether integers are interpreted
* as signed or unsigned regardless of their original type. So take
@ -210,9 +211,10 @@ vtn_handle_cooperative_alu(struct vtn_builder *b, struct vtn_value *dest_val,
(vtn_convert_op_src_type(opcode) == nir_type_int ? NIR_CMAT_A_SIGNED : 0) |
(vtn_convert_op_dst_type(opcode) == nir_type_int ? NIR_CMAT_RESULT_SIGNED : 0);
const bool saturate = vtn_has_decoration(b, dest_val, SpvDecorationSaturatedToLargestFloat8NormalConversionEXT);
nir_deref_instr *dst = vtn_create_cmat_temporary(b, dst_type->type, "cmat_convert");
nir_cmat_convert(&b->nb, &dst->def, &src->def, .cmat_signed_mask = signed_mask);
nir_cmat_convert(&b->nb, &dst->def, &src->def, .saturate = saturate, .cmat_signed_mask = signed_mask);
vtn_push_var_ssa(b, w[2], dst->var);
break;