src/simd/archsimd/_gen/simdgen/gen_simdGenericOps.go

// Copyright 2025 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package main

import (
	"bytes"
	"simd/archsimd/_gen/sgutil"
)

// writeSIMDGenericOps generates the generic ops for the current architecture,
// merges them with existing ops from other architectures, and returns the
// result as a buffer ready for writing.
func writeSIMDGenericOps(buffer *bytes.Buffer, ops []Operation, genericOpsFilePath string) {
	// Generate fresh ops for the current target, keyed by GoTypeArch (see its doc
	// in arch.go for why the shared-file merge must not key on Arch).
	currentArch := CurrentArch().GoTypeArch
	var newOps []sgutil.GenericOpsData
	for _, op := range ops {
		if op.NoGenericOps != nil && *op.NoGenericOps == "true" {
			continue
		}
		if op.SkipMaskedMethod() {
			continue
		}
		_, _, _, immType, gOp, _ := op.shape()

		newOps = append(newOps, sgutil.GenericOpsData{
			OpName: gOp.GenericName(),
			// An implicit-all-true predicate is a machine-op input only; the
			// generic op is unpredicated, so exclude it from the arg count.
			OpInLen: len(gOp.In) - gOp.implicitPredCount(),
			Comm:    op.Commutative,
			HasAux:  immType == VarImm || immType == VarImmLim || immType == ConstVarImm,
			Archs:   []string{currentArch},
		})
	}

	buf := sgutil.MergeSIMDGenericOps(newOps, genericOpsFilePath, currentArch)
	buffer.Write(buf.Bytes())
}