#include "CodeGenRegisters.h"
#include "Record.h"
#include "Support/StringExtras.h"
+#include "Support/STLExtras.h"
#include <set>
using namespace llvm;
// Loop over all of the register classes... emitting each one.
OS << "namespace { // Register classes...\n";
+ // RegClassesBelongedTo - Keep track of which register classes each reg
+ // belongs to.
+ std::multimap<Record*, const CodeGenRegisterClass*> RegClassesBelongedTo;
+
for (unsigned rc = 0, e = RegisterClasses.size(); rc != e; ++rc) {
const CodeGenRegisterClass &RC = RegisterClasses[rc];
"' included in multiple register classes!";
RegistersFound.insert(Reg);
OS << getQualifiedName(Reg) << ", ";
+
+ // Keep track of which regclasses this register is in.
+ RegClassesBelongedTo.insert(std::make_pair(Reg, &RC));
}
OS << "\n };\n\n";
<< " " << Name << "Class() : TargetRegisterClass("
<< RC.SpillSize/8 << ", " << RC.SpillAlignment << ", " << Name << ", "
<< Name << " + " << RC.Elements.size() << ") {}\n"
- << RC.MethodDefinitions
- << " } " << Name << "Instance;\n\n";
+ << RC.MethodDefinitions << " } " << Name << "Instance;\n\n";
}
OS << " const TargetRegisterClass* const RegisterClasses[] = {\n";
OS << Reg.getName() << "_AliasSet,\t";
else
OS << "Empty_AliasSet,\t";
- OS << "0, 0 },\n";
+
+ // Figure out what the size and alignment of the spill slots are for this
+ // reg. This may be explicitly declared in the register, or it may be
+ // inferred from the register classes it is part of.
+ std::multimap<Record*, const CodeGenRegisterClass*>::iterator I, E;
+ tie(I, E) = RegClassesBelongedTo.equal_range(Reg.TheDef);
+ unsigned SpillSize = Reg.DeclaredSpillSize;
+ unsigned SpillAlign = Reg.DeclaredSpillAlignment;
+ for (; I != E; ++I) { // For each reg class this belongs to.
+ const CodeGenRegisterClass *RC = I->second;
+ if (SpillSize == 0)
+ SpillSize = RC->SpillSize;
+ else if (SpillSize != RC->SpillSize)
+ throw "Spill size for regclass '" + RC->getName() +
+ "' doesn't match spill sized already inferred for register '" +
+ Reg.getName() + "'!";
+ if (SpillAlign == 0)
+ SpillAlign = RC->SpillAlignment;
+ else if (SpillAlign != RC->SpillAlignment)
+ throw "Spill alignment for regclass '" + RC->getName() +
+ "' doesn't match spill sized already inferred for register '" +
+ Reg.getName() + "'!";
+ }
+
+ OS << SpillSize << ", " << SpillAlign << " },\n";
}
OS << " };\n"; // End of register descriptors...
OS << "}\n\n"; // End of anonymous namespace...