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// Copyright (c) 2018, Compiler Explorer Authors
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
import _ from 'underscore';
import {ParseFilters} from '../../types/features/filters.interfaces';
import * as utils from '../utils';
// Note(jeremy-rifkin):
// For now this filters out a bunch of metadata we aren't interested in
// Maybe at a later date we'll want to allow user-controllable filters
// It'd be helpful to better display annotations about branch weights
// and parse debug info too at some point.
export class LlvmPrintAfterAllParser {
filters: RegExp[];
lineFilters: RegExp[];
irDumpAfterHeader: RegExp;
defineLine: RegExp;
label: RegExp;
instruction: RegExp;
constructor(compilerProps) {
//this.maxIrLines = 5000;
//if (compilerProps) {
// this.maxIrLines = compilerProps('maxLinesOfAsm', this.maxIrLines);
//}
this.filters = [
/^; ModuleID = '.+'$/, // module id line
/^(source_filename|target datalayout|target triple) = ".+"$/, // module metadata
/^; Function Attrs: .+$/, // function attributes
/^\s+call void @llvm.dbg.value.+$/, // dbg calls
/^\s+call void @llvm.dbg.declare.+$/, // dbg calls
/^declare .+$/, // declare directives
/^(!\d+) = (?:distinct )?!DI([A-Za-z]+)\(([^)]+?)\)/, // meta
/^(!\d+) = !{.*}/, // meta
/^(![.A-Z_a-z-]+) = !{.*}/, // meta
/^attributes #\d+ = { .+ }$/, // attributes directive
];
this.lineFilters = [
/,? ![\dA-Za-z]+((?=( {)?$))/, // debug annotation
/,? #\d+((?=( {)?$))/, // attribute annotation
];
this.irDumpAfterHeader = /^\*{3} (.+) \*{3}$/;
this.defineLine = /^define .+ @(\w+)\(.+$/;
this.label = /^\d+:(\s+;.+)?$/;
this.instruction = /^\s+.+$/;
}
getOutput(ir: {text: string}[]) {
return ir;
}
process(ir: {text: string}[], _: ParseFilters) {
let last_item: string | null = null; // awful impurity to used to filter adjacent blank lines
// Filter a lot of junk before processing
const preprocessed_lines = ir
.filter(line => this.filters.every(re => line.text.match(re) === null)) // apply filters
.filter(line => {
// Filter duplicate blank lines
const b = line.text === '' && last_item === '';
last_item = line.text;
return !b;
})
.map(_line => {
let line = _line.text;
// eslint-disable-next-line no-constant-condition
while (true) {
let newLine = line;
for (const re of this.lineFilters) {
newLine = newLine.replace(re, '');
}
if (newLine === line) {
break;
} else {
line = newLine;
}
}
_line.text = line;
return _line;
});
return this.getOutput(preprocessed_lines);
}
}
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