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llvm-project/llvm/lib/CodeGen/RenderMachineFunction.cpp

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//===-- llvm/CodeGen/RenderMachineFunction.cpp - MF->HTML -----s-----------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#define DEBUG_TYPE "rendermf"
#include "RenderMachineFunction.h"
#include "VirtRegMap.h"
#include "llvm/Function.h"
#include "llvm/Module.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/CodeGen/LiveIntervalAnalysis.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Target/TargetMachine.h"
#include <sstream>
using namespace llvm;
char RenderMachineFunction::ID = 0;
static RegisterPass<RenderMachineFunction>
X("rendermf", "Render machine functions (and related info) to HTML pages");
static cl::opt<std::string>
outputFileSuffix("rmf-file-suffix",
cl::desc("Appended to function name to get output file name "
"(default: \".html\")"),
cl::init(".html"), cl::Hidden);
static cl::opt<std::string>
machineFuncsToRender("rmf-funcs",
cl::desc("Coma seperated list of functions to render"
", or \"*\"."),
cl::init(""), cl::Hidden);
static cl::opt<std::string>
pressureClasses("rmf-classes",
cl::desc("Register classes to render pressure for."),
cl::init(""), cl::Hidden);
static cl::opt<std::string>
showIntervals("rmf-intervals",
cl::desc("Live intervals to show alongside code."),
cl::init(""), cl::Hidden);
static cl::opt<bool>
showEmptyIndexes("rmf-empty-indexes",
cl::desc("Render indexes not associated with instructions or "
"MBB starts."),
cl::init(false), cl::Hidden);
static cl::opt<bool>
useFancyVerticals("rmf-fancy-verts",
cl::desc("Use SVG for vertical text."),
cl::init(true), cl::Hidden);
static cl::opt<bool>
prettyHTML("rmf-pretty-html",
cl::desc("Pretty print HTML. For debugging the renderer only.."),
cl::init(false), cl::Hidden);
namespace llvm {
bool MFRenderingOptions::renderingOptionsProcessed;
std::set<std::string> MFRenderingOptions::mfNamesToRender;
bool MFRenderingOptions::renderAllMFs = false;
std::set<std::string> MFRenderingOptions::classNamesToRender;
bool MFRenderingOptions::renderAllClasses = false;
std::set<std::pair<unsigned, unsigned> >
MFRenderingOptions::intervalNumsToRender;
unsigned MFRenderingOptions::intervalTypesToRender = ExplicitOnly;
template <typename OutputItr>
void MFRenderingOptions::splitComaSeperatedList(const std::string &s,
OutputItr outItr) {
std::string::const_iterator curPos = s.begin();
std::string::const_iterator nextComa = std::find(curPos, s.end(), ',');
while (nextComa != s.end()) {
std::string elem;
std::copy(curPos, nextComa, std::back_inserter(elem));
*outItr = elem;
++outItr;
curPos = llvm::next(nextComa);
nextComa = std::find(curPos, s.end(), ',');
}
if (curPos != s.end()) {
std::string elem;
std::copy(curPos, s.end(), std::back_inserter(elem));
*outItr = elem;
++outItr;
}
}
void MFRenderingOptions::processOptions() {
if (!renderingOptionsProcessed) {
processFuncNames();
processRegClassNames();
processIntervalNumbers();
renderingOptionsProcessed = true;
}
}
void MFRenderingOptions::processFuncNames() {
if (machineFuncsToRender == "*") {
renderAllMFs = true;
} else {
splitComaSeperatedList(machineFuncsToRender,
std::inserter(mfNamesToRender,
mfNamesToRender.begin()));
}
}
void MFRenderingOptions::processRegClassNames() {
if (pressureClasses == "*") {
renderAllClasses = true;
} else {
splitComaSeperatedList(pressureClasses,
std::inserter(classNamesToRender,
classNamesToRender.begin()));
}
}
void MFRenderingOptions::processIntervalNumbers() {
std::set<std::string> intervalRanges;
splitComaSeperatedList(showIntervals,
std::inserter(intervalRanges,
intervalRanges.begin()));
std::for_each(intervalRanges.begin(), intervalRanges.end(),
processIntervalRange);
}
void MFRenderingOptions::processIntervalRange(
const std::string &intervalRangeStr) {
if (intervalRangeStr == "*") {
intervalTypesToRender |= All;
} else if (intervalRangeStr == "virt*") {
intervalTypesToRender |= VirtPlusExplicit;
} else if (intervalRangeStr == "phys*") {
intervalTypesToRender |= PhysPlusExplicit;
} else {
std::istringstream iss(intervalRangeStr);
unsigned reg1, reg2;
if ((iss >> reg1 >> std::ws)) {
if (iss.eof()) {
intervalNumsToRender.insert(std::make_pair(reg1, reg1 + 1));
} else {
char c;
iss >> c;
if (c == '-' && (iss >> reg2)) {
intervalNumsToRender.insert(std::make_pair(reg1, reg2 + 1));
} else {
dbgs() << "Warning: Invalid interval range \""
<< intervalRangeStr << "\" in -rmf-intervals. Skipping.\n";
}
}
} else {
dbgs() << "Warning: Invalid interval number \""
<< intervalRangeStr << "\" in -rmf-intervals. Skipping.\n";
}
}
}
void MFRenderingOptions::setup(MachineFunction *mf,
const TargetRegisterInfo *tri,
LiveIntervals *lis) {
this->mf = mf;
this->tri = tri;
this->lis = lis;
clear();
}
void MFRenderingOptions::clear() {
regClassesTranslatedToCurrentFunction = false;
regClassSet.clear();
intervalsTranslatedToCurrentFunction = false;
intervalSet.clear();
}
void MFRenderingOptions::resetRenderSpecificOptions() {
intervalSet.clear();
intervalsTranslatedToCurrentFunction = false;
}
bool MFRenderingOptions::shouldRenderCurrentMachineFunction() const {
processOptions();
return (renderAllMFs ||
mfNamesToRender.find(mf->getFunction()->getName()) !=
mfNamesToRender.end());
}
const MFRenderingOptions::RegClassSet& MFRenderingOptions::regClasses() const{
translateRegClassNamesToCurrentFunction();
return regClassSet;
}
const MFRenderingOptions::IntervalSet& MFRenderingOptions::intervals() const {
translateIntervalNumbersToCurrentFunction();
return intervalSet;
}
bool MFRenderingOptions::renderEmptyIndexes() const {
return showEmptyIndexes;
}
bool MFRenderingOptions::fancyVerticals() const {
return useFancyVerticals;
}
void MFRenderingOptions::translateRegClassNamesToCurrentFunction() const {
if (!regClassesTranslatedToCurrentFunction) {
processOptions();
for (TargetRegisterInfo::regclass_iterator rcItr = tri->regclass_begin(),
rcEnd = tri->regclass_end();
rcItr != rcEnd; ++rcItr) {
const TargetRegisterClass *trc = *rcItr;
if (renderAllClasses ||
classNamesToRender.find(trc->getName()) !=
classNamesToRender.end()) {
regClassSet.insert(trc);
}
}
regClassesTranslatedToCurrentFunction = true;
}
}
void MFRenderingOptions::translateIntervalNumbersToCurrentFunction() const {
if (!intervalsTranslatedToCurrentFunction) {
processOptions();
// If we're not just doing explicit then do a copy over all matching
// types.
if (intervalTypesToRender != ExplicitOnly) {
for (LiveIntervals::iterator liItr = lis->begin(), liEnd = lis->end();
liItr != liEnd; ++liItr) {
if ((TargetRegisterInfo::isPhysicalRegister(liItr->first) &&
(intervalTypesToRender & PhysPlusExplicit)) ||
(TargetRegisterInfo::isVirtualRegister(liItr->first) &&
(intervalTypesToRender & VirtPlusExplicit))) {
intervalSet.insert(liItr->second);
}
}
}
// If we need to process the explicit list...
if (intervalTypesToRender != All) {
for (std::set<std::pair<unsigned, unsigned> >::const_iterator
regRangeItr = intervalNumsToRender.begin(),
regRangeEnd = intervalNumsToRender.end();
regRangeItr != regRangeEnd; ++regRangeItr) {
const std::pair<unsigned, unsigned> &range = *regRangeItr;
for (unsigned reg = range.first; reg != range.second; ++reg) {
if (lis->hasInterval(reg)) {
intervalSet.insert(&lis->getInterval(reg));
}
}
}
}
intervalsTranslatedToCurrentFunction = true;
}
}
// ---------- TargetRegisterExtraInformation implementation ----------
TargetRegisterExtraInfo::TargetRegisterExtraInfo()
: mapsPopulated(false) {
}
void TargetRegisterExtraInfo::setup(MachineFunction *mf,
MachineRegisterInfo *mri,
const TargetRegisterInfo *tri,
LiveIntervals *lis) {
this->mf = mf;
this->mri = mri;
this->tri = tri;
this->lis = lis;
}
void TargetRegisterExtraInfo::reset() {
if (!mapsPopulated) {
initWorst();
//initBounds();
initCapacity();
mapsPopulated = true;
}
resetPressureAndLiveStates();
}
void TargetRegisterExtraInfo::clear() {
prWorst.clear();
vrWorst.clear();
capacityMap.clear();
pressureMap.clear();
//liveStatesMap.clear();
mapsPopulated = false;
}
void TargetRegisterExtraInfo::initWorst() {
assert(!mapsPopulated && prWorst.empty() && vrWorst.empty() &&
"Worst map already initialised?");
// Start with the physical registers.
for (unsigned preg = 1; preg < tri->getNumRegs(); ++preg) {
WorstMapLine &pregLine = prWorst[preg];
for (TargetRegisterInfo::regclass_iterator rcItr = tri->regclass_begin(),
rcEnd = tri->regclass_end();
rcItr != rcEnd; ++rcItr) {
const TargetRegisterClass *trc = *rcItr;
unsigned numOverlaps = 0;
for (TargetRegisterClass::iterator rItr = trc->begin(),
rEnd = trc->end();
rItr != rEnd; ++rItr) {
unsigned trcPReg = *rItr;
if (tri->regsOverlap(preg, trcPReg))
++numOverlaps;
}
pregLine[trc] = numOverlaps;
}
}
// Now the register classes.
for (TargetRegisterInfo::regclass_iterator rc1Itr = tri->regclass_begin(),
rcEnd = tri->regclass_end();
rc1Itr != rcEnd; ++rc1Itr) {
const TargetRegisterClass *trc1 = *rc1Itr;
WorstMapLine &classLine = vrWorst[trc1];
for (TargetRegisterInfo::regclass_iterator rc2Itr = tri->regclass_begin();
rc2Itr != rcEnd; ++rc2Itr) {
const TargetRegisterClass *trc2 = *rc2Itr;
unsigned worst = 0;
for (TargetRegisterClass::iterator trc1Itr = trc1->begin(),
trc1End = trc1->end();
trc1Itr != trc1End; ++trc1Itr) {
unsigned trc1Reg = *trc1Itr;
unsigned trc1RegWorst = 0;
for (TargetRegisterClass::iterator trc2Itr = trc2->begin(),
trc2End = trc2->end();
trc2Itr != trc2End; ++trc2Itr) {
unsigned trc2Reg = *trc2Itr;
if (tri->regsOverlap(trc1Reg, trc2Reg))
++trc1RegWorst;
}
if (trc1RegWorst > worst) {
worst = trc1RegWorst;
}
}
if (worst != 0) {
classLine[trc2] = worst;
}
}
}
}
unsigned TargetRegisterExtraInfo::getWorst(
unsigned reg,
const TargetRegisterClass *trc) const {
const WorstMapLine *wml = 0;
if (TargetRegisterInfo::isPhysicalRegister(reg)) {
PRWorstMap::const_iterator prwItr = prWorst.find(reg);
assert(prwItr != prWorst.end() && "Missing prWorst entry.");
wml = &prwItr->second;
} else {
const TargetRegisterClass *regTRC = mri->getRegClass(reg);
VRWorstMap::const_iterator vrwItr = vrWorst.find(regTRC);
assert(vrwItr != vrWorst.end() && "Missing vrWorst entry.");
wml = &vrwItr->second;
}
WorstMapLine::const_iterator wmlItr = wml->find(trc);
if (wmlItr == wml->end())
return 0;
return wmlItr->second;
}
void TargetRegisterExtraInfo::initCapacity() {
assert(!mapsPopulated && capacityMap.empty() &&
"Capacity map already initialised?");
for (TargetRegisterInfo::regclass_iterator rcItr = tri->regclass_begin(),
rcEnd = tri->regclass_end();
rcItr != rcEnd; ++rcItr) {
const TargetRegisterClass *trc = *rcItr;
unsigned capacity = std::distance(trc->allocation_order_begin(*mf),
trc->allocation_order_end(*mf));
if (capacity != 0)
capacityMap[trc] = capacity;
}
}
unsigned TargetRegisterExtraInfo::getCapacity(
const TargetRegisterClass *trc) const {
CapacityMap::const_iterator cmItr = capacityMap.find(trc);
assert(cmItr != capacityMap.end() &&
"vreg with unallocable register class");
return cmItr->second;
}
void TargetRegisterExtraInfo::resetPressureAndLiveStates() {
pressureMap.clear();
//liveStatesMap.clear();
// Iterate over all slots.
// Iterate over all live intervals.
for (LiveIntervals::iterator liItr = lis->begin(),
liEnd = lis->end();
liItr != liEnd; ++liItr) {
LiveInterval *li = liItr->second;
const TargetRegisterClass *liTRC;
if (TargetRegisterInfo::isPhysicalRegister(li->reg))
continue;
liTRC = mri->getRegClass(li->reg);
// For all ranges in the current interal.
for (LiveInterval::iterator lrItr = li->begin(),
lrEnd = li->end();
lrItr != lrEnd; ++lrItr) {
LiveRange *lr = &*lrItr;
// For all slots in the current range.
for (SlotIndex i = lr->start; i != lr->end; i = i.getNextSlot()) {
// Record increased pressure at index for all overlapping classes.
for (TargetRegisterInfo::regclass_iterator
rcItr = tri->regclass_begin(),
rcEnd = tri->regclass_end();
rcItr != rcEnd; ++rcItr) {
const TargetRegisterClass *trc = *rcItr;
if (trc->allocation_order_begin(*mf) ==
trc->allocation_order_end(*mf))
continue;
unsigned worstAtI = getWorst(li->reg, trc);
if (worstAtI != 0) {
pressureMap[i][trc] += worstAtI;
}
}
}
}
}
}
unsigned TargetRegisterExtraInfo::getPressureAtSlot(
const TargetRegisterClass *trc,
SlotIndex i) const {
PressureMap::const_iterator pmItr = pressureMap.find(i);
if (pmItr == pressureMap.end())
return 0;
const PressureMapLine &pmLine = pmItr->second;
PressureMapLine::const_iterator pmlItr = pmLine.find(trc);
if (pmlItr == pmLine.end())
return 0;
return pmlItr->second;
}
bool TargetRegisterExtraInfo::classOverCapacityAtSlot(
const TargetRegisterClass *trc,
SlotIndex i) const {
return (getPressureAtSlot(trc, i) > getCapacity(trc));
}
// ---------- MachineFunctionRenderer implementation ----------
void RenderMachineFunction::Spacer::print(raw_ostream &os) const {
if (!prettyHTML)
return;
for (unsigned i = 0; i < ns; ++i) {
os << " ";
}
}
RenderMachineFunction::Spacer RenderMachineFunction::s(unsigned ns) const {
return Spacer(ns);
}
raw_ostream& operator<<(raw_ostream &os, const RenderMachineFunction::Spacer &s) {
s.print(os);
return os;
}
template <typename Iterator>
std::string RenderMachineFunction::escapeChars(Iterator sBegin, Iterator sEnd) const {
std::string r;
for (Iterator sItr = sBegin; sItr != sEnd; ++sItr) {
char c = *sItr;
switch (c) {
case '<': r.append("&lt;"); break;
case '>': r.append("&gt;"); break;
case '&': r.append("&amp;"); break;
case ' ': r.append("&nbsp;"); break;
case '\"': r.append("&quot;"); break;
default: r.push_back(c); break;
}
}
return r;
}
RenderMachineFunction::LiveState
RenderMachineFunction::getLiveStateAt(const LiveInterval *li,
SlotIndex i) const {
const MachineInstr *mi = sis->getInstructionFromIndex(i);
if (li->liveAt(i)) {
if (mi == 0) {
if (vrm == 0 ||
(vrm->getStackSlot(li->reg) == VirtRegMap::NO_STACK_SLOT)) {
return AliveReg;
} else {
return AliveStack;
}
} else {
if (i.getSlot() == SlotIndex::DEF &&
mi->definesRegister(li->reg, tri)) {
return Defined;
} else if (i.getSlot() == SlotIndex::USE &&
mi->readsRegister(li->reg)) {
return Used;
} else {
if (vrm == 0 ||
(vrm->getStackSlot(li->reg) == VirtRegMap::NO_STACK_SLOT)) {
return AliveReg;
} else {
return AliveStack;
}
}
}
}
return Dead;
}
RenderMachineFunction::PressureState
RenderMachineFunction::getPressureStateAt(const TargetRegisterClass *trc,
SlotIndex i) const {
if (trei.getPressureAtSlot(trc, i) == 0) {
return Zero;
} else if (trei.classOverCapacityAtSlot(trc, i)){
return High;
}
return Low;
}
/// \brief Render a machine instruction.
void RenderMachineFunction::renderMachineInstr(raw_ostream &os,
const MachineInstr *mi) const {
std::string s;
raw_string_ostream oss(s);
oss << *mi;
os << escapeChars(oss.str());
}
template <typename T>
void RenderMachineFunction::renderVertical(const Spacer &indent,
raw_ostream &os,
const T &t) const {
if (ro.fancyVerticals()) {
os << indent << "<object\n"
<< indent + s(2) << "class=\"obj\"\n"
<< indent + s(2) << "type=\"image/svg+xml\"\n"
<< indent + s(2) << "width=\"14px\"\n"
<< indent + s(2) << "height=\"55px\"\n"
<< indent + s(2) << "data=\"data:image/svg+xml,\n"
<< indent + s(4) << "<svg xmlns='http://www.w3.org/2000/svg'>\n"
<< indent + s(6) << "<text x='-55' y='10' "
"font-family='Courier' font-size='12' "
"transform='rotate(-90)' "
"text-rendering='optimizeSpeed' "
"fill='#000'>" << t << "</text>\n"
<< indent + s(4) << "</svg>\">\n"
<< indent << "</object>\n";
} else {
std::ostringstream oss;
oss << t;
std::string tStr(oss.str());
os << indent;
for (std::string::iterator tStrItr = tStr.begin(), tStrEnd = tStr.end();
tStrItr != tStrEnd; ++tStrItr) {
os << *tStrItr << "<br/>";
}
os << "\n";
}
}
void RenderMachineFunction::insertCSS(const Spacer &indent,
raw_ostream &os) const {
os << indent << "<style type=\"text/css\">\n"
<< indent + s(2) << "body { font-color: black; }\n"
<< indent + s(2) << "table.code td { font-family: monospace; "
"border-width: 0px; border-style: solid; "
"border-bottom: 1px solid #dddddd; white-space: nowrap; }\n"
<< indent + s(2) << "table.code td.p-z { background-color: #000000; }\n"
<< indent + s(2) << "table.code td.p-l { background-color: #00ff00; }\n"
<< indent + s(2) << "table.code td.p-h { background-color: #ff0000; }\n"
<< indent + s(2) << "table.code td.l-n { background-color: #ffffff; }\n"
<< indent + s(2) << "table.code td.l-d { background-color: #ff0000; }\n"
<< indent + s(2) << "table.code td.l-u { background-color: #ffff00; }\n"
<< indent + s(2) << "table.code td.l-r { background-color: #000000; }\n"
<< indent + s(2) << "table.code td.l-s { background-color: #770000; }\n"
<< indent + s(2) << "table.code th { border-width: 0px; "
"border-style: solid; }\n"
<< indent << "</style>\n";
}
void RenderMachineFunction::renderFunctionSummary(
const Spacer &indent, raw_ostream &os,
const char * const renderContextStr) const {
os << indent << "<h1>Function: " << mf->getFunction()->getName()
<< "</h1>\n"
<< indent << "<h2>Rendering context: " << renderContextStr << "</h2>\n";
}
void RenderMachineFunction::renderPressureTableLegend(
const Spacer &indent,
raw_ostream &os) const {
os << indent << "<h2>Rendering Pressure Legend:</h2>\n"
<< indent << "<table class=\"code\">\n"
<< indent + s(2) << "<tr>\n"
<< indent + s(4) << "<th>Pressure</th><th>Description</th>"
"<th>Appearance</th>\n"
<< indent + s(2) << "</tr>\n"
<< indent + s(2) << "<tr>\n"
<< indent + s(4) << "<td>No Pressure</td>"
"<td>No physical registers of this class requested.</td>"
"<td class=\"p-z\">&nbsp;&nbsp;</td>\n"
<< indent + s(2) << "</tr>\n"
<< indent + s(2) << "<tr>\n"
<< indent + s(4) << "<td>Low Pressure</td>"
"<td>Sufficient physical registers to meet demand.</td>"
"<td class=\"p-l\">&nbsp;&nbsp;</td>\n"
<< indent + s(2) << "</tr>\n"
<< indent + s(2) << "<tr>\n"
<< indent + s(4) << "<td>High Pressure</td>"
"<td>Potentially insufficient physical registers to meet demand.</td>"
"<td class=\"p-h\">&nbsp;&nbsp;</td>\n"
<< indent + s(2) << "</tr>\n"
<< indent << "</table>\n";
}
template <typename CellType>
void RenderMachineFunction::renderCellsWithRLE(
const Spacer &indent, raw_ostream &os,
const std::pair<CellType, unsigned> &rleAccumulator,
const std::map<CellType, std::string> &cellTypeStrs) const {
if (rleAccumulator.second == 0)
return;
typename std::map<CellType, std::string>::const_iterator ctsItr =
cellTypeStrs.find(rleAccumulator.first);
assert(ctsItr != cellTypeStrs.end() && "No string for given cell type.");
os << indent + s(4) << "<td class=\"" << ctsItr->second << "\"";
if (rleAccumulator.second > 1)
os << " colspan=" << rleAccumulator.second;
os << "></td>\n";
}
void RenderMachineFunction::renderCodeTablePlusPI(const Spacer &indent,
raw_ostream &os) const {
std::map<LiveState, std::string> lsStrs;
lsStrs[Dead] = "l-n";
lsStrs[Defined] = "l-d";
lsStrs[Used] = "l-u";
lsStrs[AliveReg] = "l-r";
lsStrs[AliveStack] = "l-s";
std::map<PressureState, std::string> psStrs;
psStrs[Zero] = "p-z";
psStrs[Low] = "p-l";
psStrs[High] = "p-h";
// Open the table...
os << indent << "<table cellpadding=0 cellspacing=0 class=\"code\">\n"
<< indent + s(2) << "<tr>\n";
// Render the header row...
os << indent + s(4) << "<th>index</th>\n"
<< indent + s(4) << "<th>instr</th>\n";
// Render class names if necessary...
if (!ro.regClasses().empty()) {
for (MFRenderingOptions::RegClassSet::const_iterator
rcItr = ro.regClasses().begin(),
rcEnd = ro.regClasses().end();
rcItr != rcEnd; ++rcItr) {
const TargetRegisterClass *trc = *rcItr;
os << indent + s(4) << "<th>\n";
renderVertical(indent + s(6), os, trc->getName());
os << indent + s(4) << "</th>\n";
}
}
// FIXME: Is there a nicer way to insert space between columns in HTML?
if (!ro.regClasses().empty() && !ro.intervals().empty())
os << indent + s(4) << "<th>&nbsp;&nbsp;</th>\n";
// Render interval numbers if necessary...
if (!ro.intervals().empty()) {
for (MFRenderingOptions::IntervalSet::const_iterator
liItr = ro.intervals().begin(),
liEnd = ro.intervals().end();
liItr != liEnd; ++liItr) {
const LiveInterval *li = *liItr;
os << indent + s(4) << "<th>\n";
renderVertical(indent + s(6), os, li->reg);
os << indent + s(4) << "</th>\n";
}
}
os << indent + s(2) << "</tr>\n";
// End header row, start with the data rows...
MachineInstr *mi = 0;
// Data rows:
for (SlotIndex i = sis->getZeroIndex(); i != sis->getLastIndex();
i = i.getNextSlot()) {
// Render the slot column.
os << indent + s(2) << "<tr height=6ex>\n";
// Render the code column.
if (i.getSlot() == SlotIndex::LOAD) {
MachineBasicBlock *mbb = sis->getMBBFromIndex(i);
mi = sis->getInstructionFromIndex(i);
if (i == sis->getMBBStartIdx(mbb) || mi != 0 ||
ro.renderEmptyIndexes()) {
os << indent + s(4) << "<td rowspan=4>" << i << "&nbsp;</td>\n"
<< indent + s(4) << "<td rowspan=4>\n";
if (i == sis->getMBBStartIdx(mbb)) {
os << indent + s(6) << "BB#" << mbb->getNumber() << ":&nbsp;\n";
} else if (mi != 0) {
os << indent + s(6) << "&nbsp;&nbsp;";
renderMachineInstr(os, mi);
} else {
// Empty interval - leave blank.
}
os << indent + s(4) << "</td>\n";
} else {
i = i.getStoreIndex(); // <- Will be incremented to the next index.
continue;
}
}
// Render the class columns.
if (!ro.regClasses().empty()) {
std::pair<PressureState, unsigned> psRLEAccumulator(Zero, 0);
for (MFRenderingOptions::RegClassSet::const_iterator
rcItr = ro.regClasses().begin(),
rcEnd = ro.regClasses().end();
rcItr != rcEnd; ++rcItr) {
const TargetRegisterClass *trc = *rcItr;
PressureState newPressure = getPressureStateAt(trc, i);
if (newPressure == psRLEAccumulator.first) {
++psRLEAccumulator.second;
} else {
renderCellsWithRLE(indent + s(4), os, psRLEAccumulator, psStrs);
psRLEAccumulator.first = newPressure;
psRLEAccumulator.second = 1;
}
}
renderCellsWithRLE(indent + s(4), os, psRLEAccumulator, psStrs);
}
// FIXME: Is there a nicer way to insert space between columns in HTML?
if (!ro.regClasses().empty() && !ro.intervals().empty())
os << indent + s(4) << "<td width=2em></td>\n";
if (!ro.intervals().empty()) {
std::pair<LiveState, unsigned> lsRLEAccumulator(Dead, 0);
for (MFRenderingOptions::IntervalSet::const_iterator
liItr = ro.intervals().begin(),
liEnd = ro.intervals().end();
liItr != liEnd; ++liItr) {
const LiveInterval *li = *liItr;
LiveState newLiveness = getLiveStateAt(li, i);
if (newLiveness == lsRLEAccumulator.first) {
++lsRLEAccumulator.second;
} else {
renderCellsWithRLE(indent + s(4), os, lsRLEAccumulator, lsStrs);
lsRLEAccumulator.first = newLiveness;
lsRLEAccumulator.second = 1;
}
}
renderCellsWithRLE(indent + s(4), os, lsRLEAccumulator, lsStrs);
}
os << indent + s(2) << "</tr>\n";
}
os << indent << "</table>\n";
if (!ro.regClasses().empty())
renderPressureTableLegend(indent, os);
}
void RenderMachineFunction::renderFunctionPage(
raw_ostream &os,
const char * const renderContextStr) const {
os << "<html>\n"
<< s(2) << "<head>\n"
<< s(4) << "<title>" << fqn << "</title>\n";
insertCSS(s(4), os);
os << s(2) << "<head>\n"
<< s(2) << "<body >\n";
renderFunctionSummary(s(4), os, renderContextStr);
os << s(4) << "<br/><br/><br/>\n";
//renderLiveIntervalInfoTable(" ", os);
os << s(4) << "<br/><br/><br/>\n";
renderCodeTablePlusPI(s(4), os);
os << s(2) << "</body>\n"
<< "</html>\n";
}
void RenderMachineFunction::getAnalysisUsage(AnalysisUsage &au) const {
au.addRequired<SlotIndexes>();
au.addRequired<LiveIntervals>();
au.setPreservesAll();
MachineFunctionPass::getAnalysisUsage(au);
}
bool RenderMachineFunction::runOnMachineFunction(MachineFunction &fn) {
mf = &fn;
mri = &mf->getRegInfo();
tri = mf->getTarget().getRegisterInfo();
lis = &getAnalysis<LiveIntervals>();
sis = &getAnalysis<SlotIndexes>();
trei.setup(mf, mri, tri, lis);
ro.setup(mf, tri, lis);
fqn = mf->getFunction()->getParent()->getModuleIdentifier() + "." +
mf->getFunction()->getName().str();
return false;
}
void RenderMachineFunction::releaseMemory() {
trei.clear();
ro.clear();
}
void RenderMachineFunction::renderMachineFunction(
const char *renderContextStr,
const VirtRegMap *vrm,
const char *renderSuffix) {
if (!ro.shouldRenderCurrentMachineFunction())
return;
this->vrm = vrm;
trei.reset();
std::string rpFileName(mf->getFunction()->getName().str() +
(renderSuffix ? renderSuffix : "") +
outputFileSuffix);
std::string errMsg;
raw_fd_ostream outFile(rpFileName.c_str(), errMsg, raw_fd_ostream::F_Binary);
renderFunctionPage(outFile, renderContextStr);
ro.resetRenderSpecificOptions();
}
std::string RenderMachineFunction::escapeChars(const std::string &s) const {
return escapeChars(s.begin(), s.end());
}
}
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