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Machine Model: Add MicroOpBufferSize and resource BufferSize.

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Replace the ill-defined MinLatency and ILPWindow properties with
with straightforward buffer sizes:
MCSchedMode::MicroOpBufferSize
MCProcResourceDesc::BufferSize

These can be used to more precisely model instruction execution if desired.

Disabled some misched tests temporarily. They'll be reenabled in a few commits.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184032 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Andrew Trick
2013-06-15 04:49:57 +00:00
parent bacb24975d
commit b86a0cdb67
23 changed files with 123 additions and 234 deletions
Download Patch File Download Diff File Expand all files Collapse all files
utils/TableGen/SubtargetEmitter.cpp
+7 -10
View File
@@ -634,16 +634,14 @@ void SubtargetEmitter::EmitProcessorResources(const CodeGenProcModel &ProcModel,
Record *SuperDef = 0;
unsigned SuperIdx = 0;
unsigned NumUnits = 0;
bool IsBuffered = true;
int BufferSize = -1;
if (PRDef->isSubClassOf("ProcResGroup")) {
RecVec ResUnits = PRDef->getValueAsListOfDefs("Resources");
for (RecIter RUI = ResUnits.begin(), RUE = ResUnits.end();
RUI != RUE; ++RUI) {
if (!NumUnits)
IsBuffered = (*RUI)->getValueAsBit("Buffered");
else if(IsBuffered != (*RUI)->getValueAsBit("Buffered"))
PrintFatalError(PRDef->getLoc(),
"Mixing buffered and unbuffered resources.");
int BuffSz = (*RUI)->getValueAsInt("BufferSize");
if (!NumUnits || (unsigned)BufferSize < (unsigned)BuffSz)
BufferSize = BuffSz;
NumUnits += (*RUI)->getValueAsInt("NumUnits");
}
}
@@ -655,7 +653,7 @@ void SubtargetEmitter::EmitProcessorResources(const CodeGenProcModel &ProcModel,
SuperIdx = ProcModel.getProcResourceIdx(SuperDef);
}
NumUnits = PRDef->getValueAsInt("NumUnits");
IsBuffered = PRDef->getValueAsBit("Buffered");
BufferSize = PRDef->getValueAsInt("BufferSize");
}
// Emit the ProcResourceDesc
if (i+1 == e)
@@ -664,7 +662,7 @@ void SubtargetEmitter::EmitProcessorResources(const CodeGenProcModel &ProcModel,
if (PRDef->getName().size() < 15)
OS.indent(15 - PRDef->getName().size());
OS << NumUnits << ", " << SuperIdx << ", "
<< IsBuffered << "}" << Sep << " // #" << i+1;
<< BufferSize << "}" << Sep << " // #" << i+1;
if (SuperDef)
OS << ", Super=" << SuperDef->getName();
OS << "\n";
@@ -1200,10 +1198,9 @@ void SubtargetEmitter::EmitProcessorModels(raw_ostream &OS) {
OS << "\n";
OS << "static const llvm::MCSchedModel " << PI->ModelName << "(\n";
EmitProcessorProp(OS, PI->ModelDef, "IssueWidth", ',');
EmitProcessorProp(OS, PI->ModelDef, "MinLatency", ',');
EmitProcessorProp(OS, PI->ModelDef, "MicroOpBufferSize", ',');
EmitProcessorProp(OS, PI->ModelDef, "LoadLatency", ',');
EmitProcessorProp(OS, PI->ModelDef, "HighLatency", ',');
EmitProcessorProp(OS, PI->ModelDef, "ILPWindow", ',');
EmitProcessorProp(OS, PI->ModelDef, "MispredictPenalty", ',');
OS << " " << PI->Index << ", // Processor ID\n";
if (PI->hasInstrSchedModel())