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Extract a method.

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llvm-svn: 146374
This commit is contained in:
Jakob Stoklund Olesen 2011-12-12 16:16:24 +00:00
parent f91dda4a1a
commit bc03793434
2 changed files with 26 additions and 14 deletions
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35
utils/TableGen/CodeGenRegisters.cpp
View File

@ -582,6 +582,23 @@ void CodeGenRegBank::addToMaps(CodeGenRegisterClass *RC) {
Key2RC.insert(std::make_pair(K, RC));
}
// Create a synthetic sub-class if it is missing.
CodeGenRegisterClass*
CodeGenRegBank::getOrCreateSubClass(const CodeGenRegisterClass *RC,
const CodeGenRegister::Set *Members,
StringRef Name) {
// Synthetic sub-class has the same size and alignment as RC.
CodeGenRegisterClass::Key K(Members, RC->SpillSize, RC->SpillAlignment);
RCKeyMap::const_iterator FoundI = Key2RC.find(K);
if (FoundI != Key2RC.end())
return FoundI->second;
// Sub-class doesn't exist, create a new one.
CodeGenRegisterClass *NewRC = new CodeGenRegisterClass(Name, K);
addToMaps(NewRC);
return NewRC;
}
CodeGenRegisterClass *CodeGenRegBank::getRegClass(Record *Def) {
if (CodeGenRegisterClass *RC = Def2RC[Def])
return RC;
@ -778,21 +795,11 @@ void CodeGenRegBank::computeInferredRegisterClasses() {
RC.setSubClassWithSubReg(SubIdx, &RC);
continue;
}
// This is a real subset. See if we have a matching class.
CodeGenRegisterClass::Key K(&I->second, RC.SpillSize, RC.SpillAlignment);
RCKeyMap::const_iterator FoundI = Key2RC.find(K);
if (FoundI != Key2RC.end()) {
RC.setSubClassWithSubReg(SubIdx, FoundI->second);
continue;
}
// Class doesn't exist.
CodeGenRegisterClass *NewRC =
new CodeGenRegisterClass(RC.getName() + "_with_" +
I->first->getName(), K);
addToMaps(NewRC);
RC.setSubClassWithSubReg(SubIdx, NewRC);
CodeGenRegisterClass *SubRC =
getOrCreateSubClass(&RC, &I->second,
RC.getName() + "_with_" + I->first->getName());
RC.setSubClassWithSubReg(SubIdx, SubRC);
}
}
}

5
utils/TableGen/CodeGenRegisters.h
View File

@ -237,6 +237,11 @@ namespace llvm {
// Add RC to *2RC maps.
void addToMaps(CodeGenRegisterClass*);
// Create a synthetic sub-class if it is missing.
CodeGenRegisterClass *getOrCreateSubClass(const CodeGenRegisterClass *RC,
const CodeGenRegister::Set *Membs,
StringRef Name);
// Infer missing register classes.
void computeInferredRegisterClasses();