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Use run-length encoding to represent identical adjacent cells in the pressure
and interval table. Reduces output HTML file sizes by ~80% in my test cases. Also fix access of private member type by << operator. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108823 91177308-0d34-0410-b5e6-96231b3b80d8
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Lang Hames
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@ -571,6 +571,17 @@ namespace llvm {
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return Dead;
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}
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RenderMachineFunction::PressureState
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RenderMachineFunction::getPressureStateAt(const TargetRegisterClass *trc,
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SlotIndex i) const {
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if (trei.getPressureAtSlot(trc, i) == 0) {
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return Zero;
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} else if (trei.classOverCapacityAtSlot(trc, i)){
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return High;
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}
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return Low;
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}
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/// \brief Render a machine instruction.
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template <typename OStream>
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void RenderMachineFunction::renderMachineInstr(OStream &os,
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@ -623,14 +634,14 @@ namespace llvm {
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<< indent + s(2) << "table.code td { font-family: monospace; "
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"border-width: 0px; border-style: solid; "
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"border-bottom: 1px solid #dddddd; white-space: nowrap; }\n"
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<< indent + s(2) << "table.code td.s-zp { background-color: #000000; }\n"
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<< indent + s(2) << "table.code td.s-up { background-color: #00ff00; }\n"
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<< indent + s(2) << "table.code td.s-op { background-color: #ff0000; }\n"
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<< indent + s(2) << "table.code td.l-na { background-color: #ffffff; }\n"
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<< indent + s(2) << "table.code td.l-def { background-color: #ff0000; }\n"
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<< indent + s(2) << "table.code td.l-use { background-color: #ffff00; }\n"
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<< indent + s(2) << "table.code td.l-sar { background-color: #000000; }\n"
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<< indent + s(2) << "table.code td.l-sas { background-color: #770000; }\n"
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<< indent + s(2) << "table.code td.p-z { background-color: #000000; }\n"
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<< indent + s(2) << "table.code td.p-l { background-color: #00ff00; }\n"
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<< indent + s(2) << "table.code td.p-h { background-color: #ff0000; }\n"
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<< indent + s(2) << "table.code td.l-n { background-color: #ffffff; }\n"
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<< indent + s(2) << "table.code td.l-d { background-color: #ff0000; }\n"
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<< indent + s(2) << "table.code td.l-u { background-color: #ffff00; }\n"
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<< indent + s(2) << "table.code td.l-r { background-color: #000000; }\n"
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<< indent + s(2) << "table.code td.l-s { background-color: #770000; }\n"
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<< indent + s(2) << "table.code th { border-width: 0px; "
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"border-style: solid; }\n"
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<< indent << "</style>\n";
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@ -674,17 +685,54 @@ namespace llvm {
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<< indent << "</table>\n";
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}
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template <typename OStream, typename CellType>
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void RenderMachineFunction::renderCellsWithRLE(
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const Spacer &indent, OStream &os,
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const std::pair<CellType, unsigned> &rleAccumulator,
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const std::map<CellType, std::string> &cellTypeStrs) const {
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if (rleAccumulator.second == 0)
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return;
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typename std::map<CellType, std::string>::const_iterator ctsItr =
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cellTypeStrs.find(rleAccumulator.first);
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assert(ctsItr != cellTypeStrs.end() && "No string for given cell type.");
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os << indent + s(4) << "<td class=\"" << ctsItr->second << "\"";
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if (rleAccumulator.second > 1)
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os << " colspan=" << rleAccumulator.second;
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os << "></td>\n";
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}
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template <typename OStream>
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void RenderMachineFunction::renderCodeTablePlusPI(const Spacer &indent,
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OStream &os) const {
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std::map<LiveState, std::string> lsStrs;
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lsStrs[Dead] = "l-n";
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lsStrs[Defined] = "l-d";
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lsStrs[Used] = "l-u";
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lsStrs[AliveReg] = "l-r";
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lsStrs[AliveStack] = "l-s";
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std::map<PressureState, std::string> psStrs;
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psStrs[Zero] = "p-z";
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psStrs[Low] = "p-l";
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psStrs[High] = "p-h";
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// Open the table...
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os << indent << "<table cellpadding=0 cellspacing=0 class=\"code\">\n"
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<< indent + s(2) << "<tr>\n"
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<< indent + s(4) << "<th>index</th>\n"
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<< indent + s(2) << "<tr>\n";
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// Render the header row...
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os << indent + s(4) << "<th>index</th>\n"
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<< indent + s(4) << "<th>instr</th>\n";
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// Header row:
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// Render class names if necessary...
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if (!ro.regClasses().empty()) {
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for (MFRenderingOptions::RegClassSet::const_iterator
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rcItr = ro.regClasses().begin(),
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@ -701,6 +749,7 @@ namespace llvm {
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if (!ro.regClasses().empty() && !ro.intervals().empty())
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os << indent + s(4) << "<th> </th>\n";
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// Render interval numbers if necessary...
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if (!ro.intervals().empty()) {
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for (MFRenderingOptions::IntervalSet::const_iterator
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liItr = ro.intervals().begin(),
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@ -716,14 +765,18 @@ namespace llvm {
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os << indent + s(2) << "</tr>\n";
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// End header row, start with the data rows...
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MachineInstr *mi = 0;
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// Data rows:
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for (SlotIndex i = sis->getZeroIndex(); i != sis->getLastIndex();
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i = i.getNextSlot()) {
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// Render the slot column.
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os << indent + s(2) << "<tr>\n";
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os << indent + s(2) << "<tr height=6ex>\n";
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// Render the code column.
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if (i.getSlot() == SlotIndex::LOAD) {
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MachineBasicBlock *mbb = sis->getMBBFromIndex(i);
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mi = sis->getInstructionFromIndex(i);
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@ -739,7 +792,7 @@ namespace llvm {
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os << indent + s(6) << " ";
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renderMachineInstr(os, mi);
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} else {
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os << indent + s(6) << " \n";
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// Empty interval - leave blank.
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}
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os << indent + s(4) << "</td>\n";
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} else {
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@ -748,25 +801,25 @@ namespace llvm {
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}
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}
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// Render the class columns.
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if (!ro.regClasses().empty()) {
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std::pair<PressureState, unsigned> psRLEAccumulator(Zero, 0);
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for (MFRenderingOptions::RegClassSet::const_iterator
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rcItr = ro.regClasses().begin(),
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rcEnd = ro.regClasses().end();
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rcItr != rcEnd; ++rcItr) {
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const TargetRegisterClass *trc = *rcItr;
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PressureState newPressure = getPressureStateAt(trc, i);
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os << indent + s(4) << "<td class=\"";
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if (trei.getPressureAtSlot(trc, i) == 0) {
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os << "s-zp";
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} else if (trei.classOverCapacityAtSlot(trc, i)){
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os << "s-op";
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if (newPressure == psRLEAccumulator.first) {
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++psRLEAccumulator.second;
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} else {
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os << "s-up";
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renderCellsWithRLE(indent + s(4), os, psRLEAccumulator, psStrs);
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psRLEAccumulator.first = newPressure;
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psRLEAccumulator.second = 1;
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}
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os << "\"></td>\n";
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}
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renderCellsWithRLE(indent + s(4), os, psRLEAccumulator, psStrs);
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}
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// FIXME: Is there a nicer way to insert space between columns in HTML?
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@ -774,22 +827,23 @@ namespace llvm {
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os << indent + s(4) << "<td width=2em></td>\n";
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if (!ro.intervals().empty()) {
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std::pair<LiveState, unsigned> lsRLEAccumulator(Dead, 0);
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for (MFRenderingOptions::IntervalSet::const_iterator
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liItr = ro.intervals().begin(),
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liEnd = ro.intervals().end();
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liItr != liEnd; ++liItr) {
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const LiveInterval *li = *liItr;
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os << indent + s(4) << "<td class=\"";
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switch (getLiveStateAt(li, i)) {
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case Dead: os << "l-na"; break;
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case Defined: os << "l-def"; break;
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case Used: os << "l-use"; break;
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case AliveReg: os << "l-sar"; break;
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case AliveStack: os << "l-sas"; break;
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default: assert(false && "Unrecognised live state."); break;
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LiveState newLiveness = getLiveStateAt(li, i);
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if (newLiveness == lsRLEAccumulator.first) {
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++lsRLEAccumulator.second;
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} else {
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renderCellsWithRLE(indent + s(4), os, lsRLEAccumulator, lsStrs);
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lsRLEAccumulator.first = newLiveness;
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lsRLEAccumulator.second = 1;
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}
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os << "\"></td>\n";
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}
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renderCellsWithRLE(indent + s(4), os, lsRLEAccumulator, lsStrs);
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}
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os << indent + s(2) << "</tr>\n";
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}
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@ -223,6 +223,11 @@ namespace llvm {
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const char *renderSuffix = 0);
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private:
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class Spacer;
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template <typename OStream>
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friend OStream& operator<<(OStream &os, const Spacer &s);
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std::string fqn;
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@ -238,9 +243,12 @@ namespace llvm {
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// Utilities.
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typedef enum { Dead, Defined, Used, AliveReg, AliveStack } LiveState;
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LiveState getLiveStateAt(const LiveInterval *li, SlotIndex i) const;
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typedef enum { Zero, Low, High } PressureState;
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PressureState getPressureStateAt(const TargetRegisterClass *trc,
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SlotIndex i) const;
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// ---------- Rendering methods ----------
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/// For inserting spaces when pretty printing.
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@ -286,6 +294,14 @@ namespace llvm {
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void renderPressureTableLegend(const Spacer &indent,
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OStream &os) const;
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/// \brief Render a consecutive set of HTML cells of the same class using
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/// the colspan attribute for run-length encoding.
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template <typename OStream, typename CellType>
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void renderCellsWithRLE(
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const Spacer &indent, OStream &os,
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const std::pair<CellType, unsigned> &rleAccumulator,
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const std::map<CellType, std::string> &cellTypeStrs) const;
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/// \brief Render code listing, potentially with register pressure
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/// and live intervals shown alongside.
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template <typename OStream>
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