mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-25 04:02:41 +01:00
839f6c1a88
Most places can use PrintFatalError as the unwinding mechanism was not used for anything other than printing the error. The single exception was CodeGenDAGPatterns.cpp, where intermediate errors during type resolution were ignored to simplify incremental platform development. This use is replaced by an error flag in TreePattern and bailout earlier in various places if it is set. llvm-svn: 166712
238 lines
9.2 KiB
C++
238 lines
9.2 KiB
C++
//===- CallingConvEmitter.cpp - Generate calling conventions --------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This tablegen backend is responsible for emitting descriptions of the calling
|
|
// conventions supported by this target.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "CodeGenTarget.h"
|
|
#include "llvm/TableGen/Error.h"
|
|
#include "llvm/TableGen/Record.h"
|
|
#include "llvm/TableGen/TableGenBackend.h"
|
|
#include <cassert>
|
|
using namespace llvm;
|
|
|
|
namespace {
|
|
class CallingConvEmitter {
|
|
RecordKeeper &Records;
|
|
public:
|
|
explicit CallingConvEmitter(RecordKeeper &R) : Records(R) {}
|
|
|
|
void run(raw_ostream &o);
|
|
|
|
private:
|
|
void EmitCallingConv(Record *CC, raw_ostream &O);
|
|
void EmitAction(Record *Action, unsigned Indent, raw_ostream &O);
|
|
unsigned Counter;
|
|
};
|
|
} // End anonymous namespace
|
|
|
|
void CallingConvEmitter::run(raw_ostream &O) {
|
|
|
|
std::vector<Record*> CCs = Records.getAllDerivedDefinitions("CallingConv");
|
|
|
|
// Emit prototypes for all of the CC's so that they can forward ref each
|
|
// other.
|
|
for (unsigned i = 0, e = CCs.size(); i != e; ++i) {
|
|
O << "static bool " << CCs[i]->getName()
|
|
<< "(unsigned ValNo, MVT ValVT,\n"
|
|
<< std::string(CCs[i]->getName().size()+13, ' ')
|
|
<< "MVT LocVT, CCValAssign::LocInfo LocInfo,\n"
|
|
<< std::string(CCs[i]->getName().size()+13, ' ')
|
|
<< "ISD::ArgFlagsTy ArgFlags, CCState &State);\n";
|
|
}
|
|
|
|
// Emit each calling convention description in full.
|
|
for (unsigned i = 0, e = CCs.size(); i != e; ++i)
|
|
EmitCallingConv(CCs[i], O);
|
|
}
|
|
|
|
|
|
void CallingConvEmitter::EmitCallingConv(Record *CC, raw_ostream &O) {
|
|
ListInit *CCActions = CC->getValueAsListInit("Actions");
|
|
Counter = 0;
|
|
|
|
O << "\n\nstatic bool " << CC->getName()
|
|
<< "(unsigned ValNo, MVT ValVT,\n"
|
|
<< std::string(CC->getName().size()+13, ' ')
|
|
<< "MVT LocVT, CCValAssign::LocInfo LocInfo,\n"
|
|
<< std::string(CC->getName().size()+13, ' ')
|
|
<< "ISD::ArgFlagsTy ArgFlags, CCState &State) {\n";
|
|
// Emit all of the actions, in order.
|
|
for (unsigned i = 0, e = CCActions->getSize(); i != e; ++i) {
|
|
O << "\n";
|
|
EmitAction(CCActions->getElementAsRecord(i), 2, O);
|
|
}
|
|
|
|
O << "\n return true; // CC didn't match.\n";
|
|
O << "}\n";
|
|
}
|
|
|
|
void CallingConvEmitter::EmitAction(Record *Action,
|
|
unsigned Indent, raw_ostream &O) {
|
|
std::string IndentStr = std::string(Indent, ' ');
|
|
|
|
if (Action->isSubClassOf("CCPredicateAction")) {
|
|
O << IndentStr << "if (";
|
|
|
|
if (Action->isSubClassOf("CCIfType")) {
|
|
ListInit *VTs = Action->getValueAsListInit("VTs");
|
|
for (unsigned i = 0, e = VTs->getSize(); i != e; ++i) {
|
|
Record *VT = VTs->getElementAsRecord(i);
|
|
if (i != 0) O << " ||\n " << IndentStr;
|
|
O << "LocVT == " << getEnumName(getValueType(VT));
|
|
}
|
|
|
|
} else if (Action->isSubClassOf("CCIf")) {
|
|
O << Action->getValueAsString("Predicate");
|
|
} else {
|
|
Action->dump();
|
|
PrintFatalError("Unknown CCPredicateAction!");
|
|
}
|
|
|
|
O << ") {\n";
|
|
EmitAction(Action->getValueAsDef("SubAction"), Indent+2, O);
|
|
O << IndentStr << "}\n";
|
|
} else {
|
|
if (Action->isSubClassOf("CCDelegateTo")) {
|
|
Record *CC = Action->getValueAsDef("CC");
|
|
O << IndentStr << "if (!" << CC->getName()
|
|
<< "(ValNo, ValVT, LocVT, LocInfo, ArgFlags, State))\n"
|
|
<< IndentStr << " return false;\n";
|
|
} else if (Action->isSubClassOf("CCAssignToReg")) {
|
|
ListInit *RegList = Action->getValueAsListInit("RegList");
|
|
if (RegList->getSize() == 1) {
|
|
O << IndentStr << "if (unsigned Reg = State.AllocateReg(";
|
|
O << getQualifiedName(RegList->getElementAsRecord(0)) << ")) {\n";
|
|
} else {
|
|
O << IndentStr << "static const uint16_t RegList" << ++Counter
|
|
<< "[] = {\n";
|
|
O << IndentStr << " ";
|
|
for (unsigned i = 0, e = RegList->getSize(); i != e; ++i) {
|
|
if (i != 0) O << ", ";
|
|
O << getQualifiedName(RegList->getElementAsRecord(i));
|
|
}
|
|
O << "\n" << IndentStr << "};\n";
|
|
O << IndentStr << "if (unsigned Reg = State.AllocateReg(RegList"
|
|
<< Counter << ", " << RegList->getSize() << ")) {\n";
|
|
}
|
|
O << IndentStr << " State.addLoc(CCValAssign::getReg(ValNo, ValVT, "
|
|
<< "Reg, LocVT, LocInfo));\n";
|
|
O << IndentStr << " return false;\n";
|
|
O << IndentStr << "}\n";
|
|
} else if (Action->isSubClassOf("CCAssignToRegWithShadow")) {
|
|
ListInit *RegList = Action->getValueAsListInit("RegList");
|
|
ListInit *ShadowRegList = Action->getValueAsListInit("ShadowRegList");
|
|
if (ShadowRegList->getSize() >0 &&
|
|
ShadowRegList->getSize() != RegList->getSize())
|
|
PrintFatalError("Invalid length of list of shadowed registers");
|
|
|
|
if (RegList->getSize() == 1) {
|
|
O << IndentStr << "if (unsigned Reg = State.AllocateReg(";
|
|
O << getQualifiedName(RegList->getElementAsRecord(0));
|
|
O << ", " << getQualifiedName(ShadowRegList->getElementAsRecord(0));
|
|
O << ")) {\n";
|
|
} else {
|
|
unsigned RegListNumber = ++Counter;
|
|
unsigned ShadowRegListNumber = ++Counter;
|
|
|
|
O << IndentStr << "static const uint16_t RegList" << RegListNumber
|
|
<< "[] = {\n";
|
|
O << IndentStr << " ";
|
|
for (unsigned i = 0, e = RegList->getSize(); i != e; ++i) {
|
|
if (i != 0) O << ", ";
|
|
O << getQualifiedName(RegList->getElementAsRecord(i));
|
|
}
|
|
O << "\n" << IndentStr << "};\n";
|
|
|
|
O << IndentStr << "static const uint16_t RegList"
|
|
<< ShadowRegListNumber << "[] = {\n";
|
|
O << IndentStr << " ";
|
|
for (unsigned i = 0, e = ShadowRegList->getSize(); i != e; ++i) {
|
|
if (i != 0) O << ", ";
|
|
O << getQualifiedName(ShadowRegList->getElementAsRecord(i));
|
|
}
|
|
O << "\n" << IndentStr << "};\n";
|
|
|
|
O << IndentStr << "if (unsigned Reg = State.AllocateReg(RegList"
|
|
<< RegListNumber << ", " << "RegList" << ShadowRegListNumber
|
|
<< ", " << RegList->getSize() << ")) {\n";
|
|
}
|
|
O << IndentStr << " State.addLoc(CCValAssign::getReg(ValNo, ValVT, "
|
|
<< "Reg, LocVT, LocInfo));\n";
|
|
O << IndentStr << " return false;\n";
|
|
O << IndentStr << "}\n";
|
|
} else if (Action->isSubClassOf("CCAssignToStack")) {
|
|
int Size = Action->getValueAsInt("Size");
|
|
int Align = Action->getValueAsInt("Align");
|
|
|
|
O << IndentStr << "unsigned Offset" << ++Counter
|
|
<< " = State.AllocateStack(";
|
|
if (Size)
|
|
O << Size << ", ";
|
|
else
|
|
O << "\n" << IndentStr << " State.getTarget().getDataLayout()"
|
|
"->getTypeAllocSize(EVT(LocVT).getTypeForEVT(State.getContext())), ";
|
|
if (Align)
|
|
O << Align;
|
|
else
|
|
O << "\n" << IndentStr << " State.getTarget().getDataLayout()"
|
|
"->getABITypeAlignment(EVT(LocVT).getTypeForEVT(State.getContext()))";
|
|
if (Action->isSubClassOf("CCAssignToStackWithShadow"))
|
|
O << ", " << getQualifiedName(Action->getValueAsDef("ShadowReg"));
|
|
O << ");\n" << IndentStr
|
|
<< "State.addLoc(CCValAssign::getMem(ValNo, ValVT, Offset"
|
|
<< Counter << ", LocVT, LocInfo));\n";
|
|
O << IndentStr << "return false;\n";
|
|
} else if (Action->isSubClassOf("CCPromoteToType")) {
|
|
Record *DestTy = Action->getValueAsDef("DestTy");
|
|
O << IndentStr << "LocVT = " << getEnumName(getValueType(DestTy)) <<";\n";
|
|
O << IndentStr << "if (ArgFlags.isSExt())\n"
|
|
<< IndentStr << IndentStr << "LocInfo = CCValAssign::SExt;\n"
|
|
<< IndentStr << "else if (ArgFlags.isZExt())\n"
|
|
<< IndentStr << IndentStr << "LocInfo = CCValAssign::ZExt;\n"
|
|
<< IndentStr << "else\n"
|
|
<< IndentStr << IndentStr << "LocInfo = CCValAssign::AExt;\n";
|
|
} else if (Action->isSubClassOf("CCBitConvertToType")) {
|
|
Record *DestTy = Action->getValueAsDef("DestTy");
|
|
O << IndentStr << "LocVT = " << getEnumName(getValueType(DestTy)) <<";\n";
|
|
O << IndentStr << "LocInfo = CCValAssign::BCvt;\n";
|
|
} else if (Action->isSubClassOf("CCPassIndirect")) {
|
|
Record *DestTy = Action->getValueAsDef("DestTy");
|
|
O << IndentStr << "LocVT = " << getEnumName(getValueType(DestTy)) <<";\n";
|
|
O << IndentStr << "LocInfo = CCValAssign::Indirect;\n";
|
|
} else if (Action->isSubClassOf("CCPassByVal")) {
|
|
int Size = Action->getValueAsInt("Size");
|
|
int Align = Action->getValueAsInt("Align");
|
|
O << IndentStr
|
|
<< "State.HandleByVal(ValNo, ValVT, LocVT, LocInfo, "
|
|
<< Size << ", " << Align << ", ArgFlags);\n";
|
|
O << IndentStr << "return false;\n";
|
|
} else if (Action->isSubClassOf("CCCustom")) {
|
|
O << IndentStr
|
|
<< "if (" << Action->getValueAsString("FuncName") << "(ValNo, ValVT, "
|
|
<< "LocVT, LocInfo, ArgFlags, State))\n";
|
|
O << IndentStr << IndentStr << "return false;\n";
|
|
} else {
|
|
Action->dump();
|
|
PrintFatalError("Unknown CCAction!");
|
|
}
|
|
}
|
|
}
|
|
|
|
namespace llvm {
|
|
|
|
void EmitCallingConv(RecordKeeper &RK, raw_ostream &OS) {
|
|
emitSourceFileHeader("Calling Convention Implementation Fragment", OS);
|
|
CallingConvEmitter(RK).run(OS);
|
|
}
|
|
|
|
} // End llvm namespace
|