aco: implement 16-bit nir_op_fsat
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com> Reviewed-by: Daniel Schürmann <daniel@schuermann.dev> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4452>
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@ -1816,11 +1816,15 @@ void visit_alu_instr(isel_context *ctx, nir_alu_instr *instr)
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}
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}
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case nir_op_fsat: {
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case nir_op_fsat: {
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Temp src = get_alu_src(ctx, instr->src[0]);
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Temp src = get_alu_src(ctx, instr->src[0]);
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if (dst.size() == 1) {
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if (dst.regClass() == v2b) {
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Temp one = bld.copy(bld.def(s1), Operand(0x3c00u));
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Temp tmp = bld.vop3(aco_opcode::v_med3_f16, bld.def(v1), Operand(0u), one, src);
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bld.pseudo(aco_opcode::p_split_vector, Definition(dst), bld.def(v2b), tmp);
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} else if (dst.regClass() == v1) {
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bld.vop3(aco_opcode::v_med3_f32, Definition(dst), Operand(0u), Operand(0x3f800000u), src);
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bld.vop3(aco_opcode::v_med3_f32, Definition(dst), Operand(0u), Operand(0x3f800000u), src);
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/* apparently, it is not necessary to flush denorms if this instruction is used with these operands */
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/* apparently, it is not necessary to flush denorms if this instruction is used with these operands */
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// TODO: confirm that this holds under any circumstances
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// TODO: confirm that this holds under any circumstances
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} else if (dst.size() == 2) {
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} else if (dst.regClass() == v2) {
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Instruction* add = bld.vop3(aco_opcode::v_add_f64, Definition(dst), src, Operand(0u));
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Instruction* add = bld.vop3(aco_opcode::v_add_f64, Definition(dst), src, Operand(0u));
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VOP3A_instruction* vop3 = static_cast<VOP3A_instruction*>(add);
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VOP3A_instruction* vop3 = static_cast<VOP3A_instruction*>(add);
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vop3->clamp = true;
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vop3->clamp = true;
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