mirror of
https://github.com/verilator/verilator.git
synced 2025-01-22 22:34:04 +00:00
123 lines
4.0 KiB
C++
123 lines
4.0 KiB
C++
// -*- mode: C++; c-file-style: "cc-mode" -*-
|
|
//*************************************************************************
|
|
// DESCRIPTION: Verilator: Emit C++ for tree
|
|
//
|
|
// Code available from: https://verilator.org
|
|
//
|
|
//*************************************************************************
|
|
//
|
|
// Copyright 2003-2022 by Wilson Snyder. This program is free software; you
|
|
// can redistribute it and/or modify it under the terms of either the GNU
|
|
// Lesser General Public License Version 3 or the Perl Artistic License
|
|
// Version 2.0.
|
|
// SPDX-License-Identifier: LGPL-3.0-only OR Artistic-2.0
|
|
//
|
|
//*************************************************************************
|
|
|
|
#include "config_build.h"
|
|
#include "verilatedos.h"
|
|
|
|
#include "V3EmitC.h"
|
|
#include "V3EmitCConstInit.h"
|
|
#include "V3File.h"
|
|
#include "V3Global.h"
|
|
#include "V3String.h"
|
|
#include "V3Stats.h"
|
|
|
|
#include <algorithm>
|
|
#include <cinttypes>
|
|
|
|
//######################################################################
|
|
// Const pool emitter
|
|
|
|
class EmitCConstPool final : public EmitCConstInit {
|
|
// MEMBERS
|
|
uint32_t m_outFileCount = 0;
|
|
int m_outFileSize = 0;
|
|
VDouble0 m_tablesEmitted;
|
|
VDouble0 m_constsEmitted;
|
|
|
|
// METHODS
|
|
VL_DEBUG_FUNC; // Declare debug()
|
|
|
|
V3OutCFile* newOutCFile() const {
|
|
const string fileName = v3Global.opt.makeDir() + "/" + topClassName() + "__ConstPool_"
|
|
+ cvtToStr(m_outFileCount) + ".cpp";
|
|
newCFile(fileName, /* slow: */ true, /* source: */ true);
|
|
V3OutCFile* const ofp = new V3OutCFile(fileName);
|
|
ofp->putsHeader();
|
|
ofp->puts("// DESCRIPTION: Verilator output: Constant pool\n");
|
|
ofp->puts("//\n");
|
|
ofp->puts("\n");
|
|
ofp->puts("#include \"verilated.h\"\n");
|
|
return ofp;
|
|
}
|
|
|
|
void maybeSplitCFile() {
|
|
if (v3Global.opt.outputSplit() && m_outFileSize < v3Global.opt.outputSplit()) return;
|
|
// Splitting file, so using parallel build.
|
|
v3Global.useParallelBuild(true);
|
|
// Close current file
|
|
VL_DO_DANGLING(delete m_ofp, m_ofp);
|
|
// Open next file
|
|
m_outFileSize = 0;
|
|
++m_outFileCount;
|
|
m_ofp = newOutCFile();
|
|
}
|
|
|
|
void emitVars(const AstConstPool* poolp) {
|
|
std::vector<const AstVar*> varps;
|
|
for (AstNode* nodep = poolp->modp()->stmtsp(); nodep; nodep = nodep->nextp()) {
|
|
if (const AstVar* const varp = VN_CAST(nodep, Var)) { varps.push_back(varp); }
|
|
}
|
|
|
|
if (varps.empty()) return; // Constant pool is empty, so we are done
|
|
|
|
stable_sort(varps.begin(), varps.end(), [](const AstVar* ap, const AstVar* bp) { //
|
|
return ap->name() < bp->name();
|
|
});
|
|
|
|
m_ofp = newOutCFile();
|
|
|
|
for (const AstVar* varp : varps) {
|
|
maybeSplitCFile();
|
|
const string nameProtect = topClassName() + "__ConstPool__" + varp->nameProtect();
|
|
puts("\n");
|
|
puts("extern const ");
|
|
puts(varp->dtypep()->cType(nameProtect, false, false));
|
|
puts(" = ");
|
|
iterate(varp->valuep());
|
|
puts(";\n");
|
|
// Keep track of stats
|
|
if (VN_IS(varp->dtypep(), UnpackArrayDType)) {
|
|
++m_tablesEmitted;
|
|
} else {
|
|
++m_constsEmitted;
|
|
}
|
|
}
|
|
|
|
VL_DO_DANGLING(delete m_ofp, m_ofp);
|
|
}
|
|
|
|
// VISITORS
|
|
virtual void visit(AstConst* nodep) override {
|
|
m_outFileSize += nodep->num().isString() ? 10 : nodep->isWide() ? nodep->widthWords() : 1;
|
|
EmitCConstInit::visit(nodep);
|
|
}
|
|
|
|
public:
|
|
explicit EmitCConstPool(AstConstPool* poolp) {
|
|
emitVars(poolp);
|
|
V3Stats::addStatSum("ConstPool, Tables emitted", m_tablesEmitted);
|
|
V3Stats::addStatSum("ConstPool, Constants emitted", m_constsEmitted);
|
|
}
|
|
};
|
|
|
|
//######################################################################
|
|
// EmitC static functions
|
|
|
|
void V3EmitC::emitcConstPool() {
|
|
UINFO(2, __FUNCTION__ << ": " << endl);
|
|
EmitCConstPool(v3Global.rootp()->constPoolp());
|
|
}
|