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misched: Generate IsBuffered flag for machine resources.

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llvm-svn: 165602
This commit is contained in:
Andrew Trick 2012-10-10 05:43:04 +00:00
parent 7201b35843
commit 13b4f59560
2 changed files with 13 additions and 6 deletions
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11
include/llvm/MC/MCSchedule.h
View File

@ -27,11 +27,18 @@ struct MCProcResourceDesc {
#ifndef NDEBUG
const char *Name;
#endif
unsigned Count; // Number of resource of this kind
unsigned NumUnits; // Number of resource of this kind
unsigned SuperIdx; // Index of the resources kind that contains this kind.
// Buffered resources may be consumed at some indeterminate cycle after
// dispatch (e.g. for instructions that may issue out-of-order). Unbuffered
// resources always consume their resource some fixed number of cycles after
// dispatch (e.g. for instruction interlocking that may stall the pipeline).
bool IsBuffered;
bool operator==(const MCProcResourceDesc &Other) const {
return Count == Other.Count && SuperIdx == Other.SuperIdx;
return NumUnits == Other.NumUnits && SuperIdx == Other.SuperIdx
&& IsBuffered == Other.IsBuffered;
}
};

8
utils/TableGen/SubtargetEmitter.cpp
View File

@ -623,10 +623,10 @@ void SubtargetEmitter::EmitProcessorResources(const CodeGenProcModel &ProcModel,
raw_ostream &OS) {
char Sep = ProcModel.ProcResourceDefs.empty() ? ' ' : ',';
OS << "\n// {Name, NumUnits, SuperIdx}\n";
OS << "\n// {Name, NumUnits, SuperIdx, IsBuffered}\n";
OS << "static const llvm::MCProcResourceDesc "
<< ProcModel.ModelName << "ProcResources" << "[] = {\n"
<< " {DBGFIELD(\"InvalidUnit\") 0, 0}" << Sep << "\n";
<< " {DBGFIELD(\"InvalidUnit\") 0, 0, 0}" << Sep << "\n";
for (unsigned i = 0, e = ProcModel.ProcResourceDefs.size(); i < e; ++i) {
Record *PRDef = ProcModel.ProcResourceDefs[i];
@ -645,8 +645,8 @@ void SubtargetEmitter::EmitProcessorResources(const CodeGenProcModel &ProcModel,
OS << " {DBGFIELD(\"" << PRDef->getName() << "\") ";
if (PRDef->getName().size() < 15)
OS.indent(15 - PRDef->getName().size());
OS << PRDef->getValueAsInt("NumUnits") << ", " << SuperIdx
<< "}" << Sep << " // #" << i+1;
OS << PRDef->getValueAsInt("NumUnits") << ", " << SuperIdx << ", "
<< PRDef->getValueAsBit("Buffered") << "}" << Sep << " // #" << i+1;
if (SuperDef)
OS << ", Super=" << SuperDef->getName();
OS << "\n";