misched: Generate IsBuffered flag for machine resources.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165602 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/llvm/MC/MCSchedule.h b/include/llvm/MC/MCSchedule.h
index 41bdb02..0504dc1 100644
--- a/include/llvm/MC/MCSchedule.h
+++ b/include/llvm/MC/MCSchedule.h
@@ -27,11 +27,18 @@
#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;
}
};
diff --git a/utils/TableGen/SubtargetEmitter.cpp b/utils/TableGen/SubtargetEmitter.cpp
index 6ffdeb4..ac833a5 100644
--- a/utils/TableGen/SubtargetEmitter.cpp
+++ b/utils/TableGen/SubtargetEmitter.cpp
@@ -623,10 +623,10 @@
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 @@
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";