lib/cfg/cfg-parsers/clang.ts

// Copyright (c) 2023, Compiler Explorer Authors
// All rights reserved.
//
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import _ from 'underscore';

import {ResultLine} from '../../../types/resultline/resultline.interfaces';
import * as utils from '../../utils';

import {BaseCFGParser} from './base';

export class ClangCFGParser extends BaseCFGParser {
    static override get key() {
        return 'clang';
    }

    override filterData(assembly: ResultLine[]) {
        const jmpLabelRegex = /\.LBB\d+_\d+:/;
        const isCode = x => x && x.text && (x.source !== null || jmpLabelRegex.test(x.text) || this.isFunctionName(x));

        const removeComments = (x: ResultLine) => {
            const pos_x86 = x.text.indexOf('# ');
            const pos_arm = x.text.indexOf('// ');
            if (pos_x86 !== -1) x.text = utils.trimRight(x.text.substring(0, pos_x86));
            if (pos_arm !== -1) x.text = utils.trimRight(x.text.substring(0, pos_arm));
            return x;
        };

        return this.filterTextSection(assembly).map(_.clone).filter(isCode).map(removeComments);
    }

    override extractNodeName(inst: string) {
        return inst.match(/\.LBB\d+_\d+/) + ':';
    }
}