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Begin making more use of the FastISelEmitter class.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55093 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2008-08-21 00:19:05 +00:00
parent cb37188323
commit c7f72de3b4
3 changed files with 30 additions and 28 deletions
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2
include/llvm/CodeGen/FastISel.h
View File

@ -120,6 +120,8 @@ protected:
unsigned Op0, unsigned Op1);
private:
unsigned createResultReg(const TargetRegisterClass *RC);
bool SelectBinaryOp(Instruction *I, ISD::NodeType ISDOpcode,
DenseMap<const Value*, unsigned> &ValueMap);

50
utils/TableGen/FastISelEmitter.cpp
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@ -150,24 +150,15 @@ static std::string getLegalCName(std::string OpName) {
void FastISelEmitter::run(std::ostream &OS) {
EmitSourceFileHeader("\"Fast\" Instruction Selector for the " +
CGP.getTargetInfo().getName() + " target", OS);
const CodeGenTarget &Target = CGP.getTargetInfo();
// Get the namespace to insert instructions into. Make sure not to pick up
// "TargetInstrInfo" by accidentally getting the namespace off the PHI
// instruction or something.
std::string InstNS = Target.getInstNamespace();
Target.getName() + " target", OS);
OS << "#include \"llvm/CodeGen/FastISel.h\"\n";
OS << "\n";
OS << "namespace llvm {\n";
OS << "namespace " << InstNS << " {\n";
OS << "class FastISel;\n";
OS << "}\n";
OS << "}\n";
OS << "\n";
OS << "namespace " << InstNS.substr(0, InstNS.size() - 2) << " {\n";
OS << "\n";
if (!InstNS.empty()) InstNS += "::";
typedef std::map<MVT::SimpleValueType, InstructionMemo> TypeMap;
typedef std::map<std::string, TypeMap> OpcodeTypeMap;
typedef std::map<OperandsSignature, OpcodeTypeMap> OperandsOpcodeTypeMap;
@ -245,13 +236,8 @@ void FastISelEmitter::run(std::ostream &OS) {
}
}
OS << "#include \"llvm/CodeGen/FastISel.h\"\n";
OS << "\n";
OS << "namespace llvm {\n";
OS << "\n";
// Declare the target FastISel class.
OS << "class " << InstNS << "FastISel : public llvm::FastISel {\n";
OS << "class FastISel : public llvm::FastISel {\n";
for (OperandsOpcodeTypeMap::const_iterator OI = SimplePatterns.begin(),
OE = SimplePatterns.end(); OI != OE; ++OI) {
const OperandsSignature &Operands = OI->first;
@ -294,9 +280,8 @@ void FastISelEmitter::run(std::ostream &OS) {
OS << "\n";
// Define the target FastISel creation function.
OS << "llvm::FastISel *" << InstNS
<< "createFastISel(MachineFunction &mf) {\n";
OS << " return new " << InstNS << "FastISel(mf);\n";
OS << "llvm::FastISel *createFastISel(MachineFunction &mf) {\n";
OS << " return new FastISel(mf);\n";
OS << "}\n";
OS << "\n";
@ -320,7 +305,7 @@ void FastISelEmitter::run(std::ostream &OS) {
MVT::SimpleValueType VT = TI->first;
const InstructionMemo &Memo = TI->second;
OS << "unsigned " << InstNS << "FastISel::FastEmit_"
OS << "unsigned FastISel::FastEmit_"
<< getLegalCName(Opcode)
<< "_" << getLegalCName(getName(VT)) << "(";
Operands.PrintParameters(OS);
@ -338,7 +323,7 @@ void FastISelEmitter::run(std::ostream &OS) {
}
// Emit one function for the opcode that demultiplexes based on the type.
OS << "unsigned " << InstNS << "FastISel::FastEmit_"
OS << "unsigned FastISel::FastEmit_"
<< getLegalCName(Opcode) << "(MVT::SimpleValueType VT";
if (!Operands.empty())
OS << ", ";
@ -362,7 +347,7 @@ void FastISelEmitter::run(std::ostream &OS) {
// Emit one function for the operand signature that demultiplexes based
// on opcode and type.
OS << "unsigned " << InstNS << "FastISel::FastEmit_";
OS << "unsigned FastISel::FastEmit_";
Operands.PrintManglingSuffix(OS);
OS << "(MVT::SimpleValueType VT, ISD::NodeType Opcode";
if (!Operands.empty())
@ -387,5 +372,16 @@ void FastISelEmitter::run(std::ostream &OS) {
OS << "\n";
}
OS << "}\n";
OS << "} // namespace X86\n";
OS << "\n";
OS << "} // namespace llvm\n";
}
FastISelEmitter::FastISelEmitter(RecordKeeper &R)
: Records(R),
CGP(R),
Target(CGP.getTargetInfo()),
InstNS(Target.getInstNamespace() + "::") {
assert(InstNS.size() > 2 && "Can't determine target-specific namespace!");
}

6
utils/TableGen/FastISelEmitter.h
View File

@ -19,14 +19,18 @@
namespace llvm {
class CodeGenTarget;
/// FastISelEmitter - The top-level class which coordinates construction
/// and emission of the instruction selector.
///
class FastISelEmitter : public TableGenBackend {
RecordKeeper &Records;
CodeGenDAGPatterns CGP;
const CodeGenTarget &Target;
const std::string InstNS;
public:
explicit FastISelEmitter(RecordKeeper &R) : Records(R), CGP(R) {}
explicit FastISelEmitter(RecordKeeper &R);
// run - Output the isel, returning true on failure.
void run(std::ostream &OS);