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Add immediate sub-registers.

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llvm-svn: 37738
This commit is contained in:
Evan Cheng 2007-06-26 20:59:16 +00:00
parent 5506831e5b
commit ac10d44736
2 changed files with 30 additions and 0 deletions
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9
include/llvm/Target/MRegisterInfo.h
View File

@ -48,6 +48,7 @@ struct TargetRegisterDesc {
const char *Name; // Assembly language name for the register
const unsigned *AliasSet; // Register Alias Set, described above
const unsigned *SubRegs; // Sub-register set, described above
const unsigned *ImmSubRegs; // Immediate sub-register set, described above
const unsigned *SuperRegs; // Super-register set, described above
};
@ -326,6 +327,14 @@ public:
return get(RegNo).SubRegs;
}
/// getImmediateSubRegisters - Return the set of registers that are immediate
/// sub-registers of the specified register, or a null list of there are none.
/// The list returned is zero terminated.
///
const unsigned *getImmediateSubRegisters(unsigned RegNo) const {
return get(RegNo).ImmSubRegs;
}
/// getSuperRegisters - Return the set of registers that are super-registers
/// of the specified register, or a null list of there are none. The list
/// returned is zero terminated.

21
utils/TableGen/RegisterInfoEmitter.cpp
View File

@ -359,6 +359,7 @@ void RegisterInfoEmitter::run(std::ostream &OS) {
OS << " };\n";
// Emit register sub-registers / super-registers, aliases...
std::map<Record*, std::set<Record*> > RegisterImmSubRegs;
std::map<Record*, std::set<Record*> > RegisterSubRegs;
std::map<Record*, std::set<Record*> > RegisterSuperRegs;
std::map<Record*, std::set<Record*> > RegisterAliases;
@ -397,6 +398,7 @@ void RegisterInfoEmitter::run(std::ostream &OS) {
cerr << "Warning: register " << getQualifiedName(SubReg)
<< " specified as a sub-register of " << getQualifiedName(R)
<< " multiple times!\n";
RegisterImmSubRegs[R].insert(SubReg);
addSubSuperReg(R, SubReg, RegisterSubRegs, RegisterSuperRegs,
RegisterAliases, *this);
}
@ -434,6 +436,21 @@ void RegisterInfoEmitter::run(std::ostream &OS) {
OS << "0 };\n";
}
if (!RegisterImmSubRegs.empty())
OS << "\n\n // Register Immediate Sub-registers Sets...\n";
// Loop over all of the registers which have sub-registers, emitting the
// sub-registers list to memory.
for (std::map<Record*, std::set<Record*> >::iterator
I = RegisterImmSubRegs.begin(), E = RegisterImmSubRegs.end();
I != E; ++I) {
OS << " const unsigned " << I->first->getName() << "_ImmSubRegsSet[] = { ";
for (std::set<Record*>::iterator ASI = I->second.begin(),
E = I->second.end(); ASI != E; ++ASI)
OS << getQualifiedName(*ASI) << ", ";
OS << "0 };\n";
}
if (!RegisterSuperRegs.empty())
OS << "\n\n // Register Super-registers Sets...\n";
@ -472,6 +489,10 @@ void RegisterInfoEmitter::run(std::ostream &OS) {
OS << Reg.getName() << "_SubRegsSet,\t";
else
OS << "Empty_SubRegsSet,\t";
if (RegisterImmSubRegs.count(Reg.TheDef))
OS << Reg.getName() << "_ImmSubRegsSet,\t";
else
OS << "Empty_SubRegsSet,\t";
if (RegisterSuperRegs.count(Reg.TheDef))
OS << Reg.getName() << "_SuperRegsSet },\n";
else