#include "llvm/CodeGen/MachineConstantPool.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
+#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/MIRYamlMapping.h"
#include "llvm/IR/BasicBlock.h"
/// Return true if error occurred.
bool initializeMachineFunction(MachineFunction &MF);
- /// Initialize the machine basic block using it's YAML representation.
- ///
- /// Return true if an error occurred.
- bool initializeMachineBasicBlock(MachineFunction &MF, MachineBasicBlock &MBB,
- const yaml::MachineBasicBlock &YamlMBB,
- const PerFunctionMIParsingState &PFS);
+ bool initializeRegisterInfo(MachineFunction &MF,
+ const yaml::MachineFunction &YamlMF,
+ PerFunctionMIParsingState &PFS);
- bool
- initializeRegisterInfo(const MachineFunction &MF,
- MachineRegisterInfo &RegInfo,
- const yaml::MachineFunction &YamlMF,
- DenseMap<unsigned, unsigned> &VirtualRegisterSlots);
+ void inferRegisterInfo(MachineFunction &MF,
+ const yaml::MachineFunction &YamlMF);
- bool initializeFrameInfo(const Function &F, MachineFrameInfo &MFI,
+ bool initializeFrameInfo(MachineFunction &MF,
const yaml::MachineFunction &YamlMF,
- DenseMap<unsigned, int> &StackObjectSlots,
- DenseMap<unsigned, int> &FixedStackObjectSlots);
+ PerFunctionMIParsingState &PFS);
+
+ bool parseCalleeSavedRegister(MachineFunction &MF,
+ PerFunctionMIParsingState &PFS,
+ std::vector<CalleeSavedInfo> &CSIInfo,
+ const yaml::StringValue &RegisterSource,
+ int FrameIdx);
+
+ bool parseStackObjectsDebugInfo(MachineFunction &MF,
+ PerFunctionMIParsingState &PFS,
+ const yaml::MachineStackObject &Object,
+ int FrameIdx);
bool initializeConstantPool(MachineConstantPool &ConstantPool,
const yaml::MachineFunction &YamlMF,
PerFunctionMIParsingState &PFS);
private:
+ bool parseMDNode(MDNode *&Node, const yaml::StringValue &Source,
+ MachineFunction &MF, const PerFunctionMIParsingState &PFS);
+
+ bool parseMBBReference(MachineBasicBlock *&MBB,
+ const yaml::StringValue &Source, MachineFunction &MF,
+ const PerFunctionMIParsingState &PFS);
+
/// Return a MIR diagnostic converted from an MI string diagnostic.
SMDiagnostic diagFromMIStringDiag(const SMDiagnostic &Error,
SMRange SourceRange);
- /// Return a MIR diagnostic converted from an LLVM assembly diagnostic.
- SMDiagnostic diagFromLLVMAssemblyDiag(const SMDiagnostic &Error,
- SMRange SourceRange);
+ /// Return a MIR diagnostic converted from a diagnostic located in a YAML
+ /// block scalar string.
+ SMDiagnostic diagFromBlockStringDiag(const SMDiagnostic &Error,
+ SMRange SourceRange);
/// Create an empty function with the given name.
void createDummyFunction(StringRef Name, Module &M);
M = parseAssembly(MemoryBufferRef(BSN->getValue(), Filename), Error,
Context, &IRSlots);
if (!M) {
- reportDiagnostic(diagFromLLVMAssemblyDiag(Error, BSN->getSourceRange()));
+ reportDiagnostic(diagFromBlockStringDiag(Error, BSN->getSourceRange()));
return M;
}
In.nextDocument();
MF.setExposesReturnsTwice(YamlMF.ExposesReturnsTwice);
MF.setHasInlineAsm(YamlMF.HasInlineAsm);
PerFunctionMIParsingState PFS;
- if (initializeRegisterInfo(MF, MF.getRegInfo(), YamlMF,
- PFS.VirtualRegisterSlots))
- return true;
- if (initializeFrameInfo(*MF.getFunction(), *MF.getFrameInfo(), YamlMF,
- PFS.StackObjectSlots, PFS.FixedStackObjectSlots))
+ if (initializeRegisterInfo(MF, YamlMF, PFS))
return true;
if (!YamlMF.Constants.empty()) {
auto *ConstantPool = MF.getConstantPool();
return true;
}
- const auto &F = *MF.getFunction();
- for (const auto &YamlMBB : YamlMF.BasicBlocks) {
- const BasicBlock *BB = nullptr;
- const yaml::StringValue &Name = YamlMBB.Name;
- if (!Name.Value.empty()) {
- BB = dyn_cast_or_null<BasicBlock>(
- F.getValueSymbolTable().lookup(Name.Value));
- if (!BB)
- return error(Name.SourceRange.Start,
- Twine("basic block '") + Name.Value +
- "' is not defined in the function '" + MF.getName() +
- "'");
- }
- auto *MBB = MF.CreateMachineBasicBlock(BB);
- MF.insert(MF.end(), MBB);
- bool WasInserted =
- PFS.MBBSlots.insert(std::make_pair(YamlMBB.ID, MBB)).second;
- if (!WasInserted)
- return error(Twine("redefinition of machine basic block with id #") +
- Twine(YamlMBB.ID));
+ SMDiagnostic Error;
+ if (parseMachineBasicBlockDefinitions(MF, YamlMF.Body.Value.Value, PFS,
+ IRSlots, Error)) {
+ reportDiagnostic(
+ diagFromBlockStringDiag(Error, YamlMF.Body.Value.SourceRange));
+ return true;
}
- if (YamlMF.BasicBlocks.empty())
+ if (MF.empty())
return error(Twine("machine function '") + Twine(MF.getName()) +
"' requires at least one machine basic block in its body");
+ // Initialize the frame information after creating all the MBBs so that the
+ // MBB references in the frame information can be resolved.
+ if (initializeFrameInfo(MF, YamlMF, PFS))
+ return true;
// Initialize the jump table after creating all the MBBs so that the MBB
// references can be resolved.
if (!YamlMF.JumpTableInfo.Entries.empty() &&
initializeJumpTableInfo(MF, YamlMF.JumpTableInfo, PFS))
return true;
- // Initialize the machine basic blocks after creating them all so that the
- // machine instructions parser can resolve the MBB references.
- unsigned I = 0;
- for (const auto &YamlMBB : YamlMF.BasicBlocks) {
- if (initializeMachineBasicBlock(MF, *MF.getBlockNumbered(I++), YamlMBB,
- PFS))
- return true;
- }
- return false;
-}
-
-bool MIRParserImpl::initializeMachineBasicBlock(
- MachineFunction &MF, MachineBasicBlock &MBB,
- const yaml::MachineBasicBlock &YamlMBB,
- const PerFunctionMIParsingState &PFS) {
- MBB.setAlignment(YamlMBB.Alignment);
- if (YamlMBB.AddressTaken)
- MBB.setHasAddressTaken();
- MBB.setIsLandingPad(YamlMBB.IsLandingPad);
- SMDiagnostic Error;
- // Parse the successors.
- for (const auto &MBBSource : YamlMBB.Successors) {
- MachineBasicBlock *SuccMBB = nullptr;
- if (parseMBBReference(SuccMBB, SM, MF, MBBSource.Value, PFS, IRSlots,
- Error))
- return error(Error, MBBSource.SourceRange);
- // TODO: Report an error when adding the same successor more than once.
- MBB.addSuccessor(SuccMBB);
- }
- // Parse the liveins.
- for (const auto &LiveInSource : YamlMBB.LiveIns) {
- unsigned Reg = 0;
- if (parseNamedRegisterReference(Reg, SM, MF, LiveInSource.Value, PFS,
- IRSlots, Error))
- return error(Error, LiveInSource.SourceRange);
- MBB.addLiveIn(Reg);
- }
- // Parse the instructions.
- for (const auto &MISource : YamlMBB.Instructions) {
- MachineInstr *MI = nullptr;
- if (parseMachineInstr(MI, SM, MF, MISource.Value, PFS, IRSlots, Error))
- return error(Error, MISource.SourceRange);
- MBB.insert(MBB.end(), MI);
+ // Parse the machine instructions after creating all of the MBBs so that the
+ // parser can resolve the MBB references.
+ if (parseMachineInstructions(MF, YamlMF.Body.Value.Value, PFS, IRSlots,
+ Error)) {
+ reportDiagnostic(
+ diagFromBlockStringDiag(Error, YamlMF.Body.Value.SourceRange));
+ return true;
}
+ inferRegisterInfo(MF, YamlMF);
+ // FIXME: This is a temporary workaround until the reserved registers can be
+ // serialized.
+ MF.getRegInfo().freezeReservedRegs(MF);
+ MF.verify();
return false;
}
-bool MIRParserImpl::initializeRegisterInfo(
- const MachineFunction &MF, MachineRegisterInfo &RegInfo,
- const yaml::MachineFunction &YamlMF,
- DenseMap<unsigned, unsigned> &VirtualRegisterSlots) {
+bool MIRParserImpl::initializeRegisterInfo(MachineFunction &MF,
+ const yaml::MachineFunction &YamlMF,
+ PerFunctionMIParsingState &PFS) {
+ MachineRegisterInfo &RegInfo = MF.getRegInfo();
assert(RegInfo.isSSA());
if (!YamlMF.IsSSA)
RegInfo.leaveSSA();
RegInfo.invalidateLiveness();
RegInfo.enableSubRegLiveness(YamlMF.TracksSubRegLiveness);
+ SMDiagnostic Error;
// Parse the virtual register information.
for (const auto &VReg : YamlMF.VirtualRegisters) {
const auto *RC = getRegClass(MF, VReg.Class.Value);
Twine("use of undefined register class '") +
VReg.Class.Value + "'");
unsigned Reg = RegInfo.createVirtualRegister(RC);
- // TODO: Report an error when the same virtual register with the same ID is
- // redefined.
- VirtualRegisterSlots.insert(std::make_pair(VReg.ID, Reg));
+ if (!PFS.VirtualRegisterSlots.insert(std::make_pair(VReg.ID.Value, Reg))
+ .second)
+ return error(VReg.ID.SourceRange.Start,
+ Twine("redefinition of virtual register '%") +
+ Twine(VReg.ID.Value) + "'");
+ if (!VReg.PreferredRegister.Value.empty()) {
+ unsigned PreferredReg = 0;
+ if (parseNamedRegisterReference(PreferredReg, SM, MF,
+ VReg.PreferredRegister.Value, PFS,
+ IRSlots, Error))
+ return error(Error, VReg.PreferredRegister.SourceRange);
+ RegInfo.setSimpleHint(Reg, PreferredReg);
+ }
}
+
+ // Parse the liveins.
+ for (const auto &LiveIn : YamlMF.LiveIns) {
+ unsigned Reg = 0;
+ if (parseNamedRegisterReference(Reg, SM, MF, LiveIn.Register.Value, PFS,
+ IRSlots, Error))
+ return error(Error, LiveIn.Register.SourceRange);
+ unsigned VReg = 0;
+ if (!LiveIn.VirtualRegister.Value.empty()) {
+ if (parseVirtualRegisterReference(
+ VReg, SM, MF, LiveIn.VirtualRegister.Value, PFS, IRSlots, Error))
+ return error(Error, LiveIn.VirtualRegister.SourceRange);
+ }
+ RegInfo.addLiveIn(Reg, VReg);
+ }
+
+ // Parse the callee saved register mask.
+ BitVector CalleeSavedRegisterMask(RegInfo.getUsedPhysRegsMask().size());
+ if (!YamlMF.CalleeSavedRegisters)
+ return false;
+ for (const auto &RegSource : YamlMF.CalleeSavedRegisters.getValue()) {
+ unsigned Reg = 0;
+ if (parseNamedRegisterReference(Reg, SM, MF, RegSource.Value, PFS, IRSlots,
+ Error))
+ return error(Error, RegSource.SourceRange);
+ CalleeSavedRegisterMask[Reg] = true;
+ }
+ RegInfo.setUsedPhysRegMask(CalleeSavedRegisterMask.flip());
return false;
}
-bool MIRParserImpl::initializeFrameInfo(
- const Function &F, MachineFrameInfo &MFI,
- const yaml::MachineFunction &YamlMF,
- DenseMap<unsigned, int> &StackObjectSlots,
- DenseMap<unsigned, int> &FixedStackObjectSlots) {
+void MIRParserImpl::inferRegisterInfo(MachineFunction &MF,
+ const yaml::MachineFunction &YamlMF) {
+ if (YamlMF.CalleeSavedRegisters)
+ return;
+ for (const MachineBasicBlock &MBB : MF) {
+ for (const MachineInstr &MI : MBB) {
+ for (const MachineOperand &MO : MI.operands()) {
+ if (!MO.isRegMask())
+ continue;
+ MF.getRegInfo().addPhysRegsUsedFromRegMask(MO.getRegMask());
+ }
+ }
+ }
+}
+
+bool MIRParserImpl::initializeFrameInfo(MachineFunction &MF,
+ const yaml::MachineFunction &YamlMF,
+ PerFunctionMIParsingState &PFS) {
+ MachineFrameInfo &MFI = *MF.getFrameInfo();
+ const Function &F = *MF.getFunction();
const yaml::MachineFrameInfo &YamlMFI = YamlMF.FrameInfo;
MFI.setFrameAddressIsTaken(YamlMFI.IsFrameAddressTaken);
MFI.setReturnAddressIsTaken(YamlMFI.IsReturnAddressTaken);
MFI.setHasOpaqueSPAdjustment(YamlMFI.HasOpaqueSPAdjustment);
MFI.setHasVAStart(YamlMFI.HasVAStart);
MFI.setHasMustTailInVarArgFunc(YamlMFI.HasMustTailInVarArgFunc);
+ if (!YamlMFI.SavePoint.Value.empty()) {
+ MachineBasicBlock *MBB = nullptr;
+ if (parseMBBReference(MBB, YamlMFI.SavePoint, MF, PFS))
+ return true;
+ MFI.setSavePoint(MBB);
+ }
+ if (!YamlMFI.RestorePoint.Value.empty()) {
+ MachineBasicBlock *MBB = nullptr;
+ if (parseMBBReference(MBB, YamlMFI.RestorePoint, MF, PFS))
+ return true;
+ MFI.setRestorePoint(MBB);
+ }
+ std::vector<CalleeSavedInfo> CSIInfo;
// Initialize the fixed frame objects.
for (const auto &Object : YamlMF.FixedStackObjects) {
int ObjectIdx;
else
ObjectIdx = MFI.CreateFixedSpillStackObject(Object.Size, Object.Offset);
MFI.setObjectAlignment(ObjectIdx, Object.Alignment);
- // TODO: Report an error when objects are redefined.
- FixedStackObjectSlots.insert(std::make_pair(Object.ID, ObjectIdx));
+ if (!PFS.FixedStackObjectSlots.insert(std::make_pair(Object.ID.Value,
+ ObjectIdx))
+ .second)
+ return error(Object.ID.SourceRange.Start,
+ Twine("redefinition of fixed stack object '%fixed-stack.") +
+ Twine(Object.ID.Value) + "'");
+ if (parseCalleeSavedRegister(MF, PFS, CSIInfo, Object.CalleeSavedRegister,
+ ObjectIdx))
+ return true;
}
// Initialize the ordinary frame objects.
Object.Size, Object.Alignment,
Object.Type == yaml::MachineStackObject::SpillSlot, Alloca);
MFI.setObjectOffset(ObjectIdx, Object.Offset);
- // TODO: Report an error when objects are redefined.
- StackObjectSlots.insert(std::make_pair(Object.ID, ObjectIdx));
+ if (!PFS.StackObjectSlots.insert(std::make_pair(Object.ID.Value, ObjectIdx))
+ .second)
+ return error(Object.ID.SourceRange.Start,
+ Twine("redefinition of stack object '%stack.") +
+ Twine(Object.ID.Value) + "'");
+ if (parseCalleeSavedRegister(MF, PFS, CSIInfo, Object.CalleeSavedRegister,
+ ObjectIdx))
+ return true;
+ if (Object.LocalOffset)
+ MFI.mapLocalFrameObject(ObjectIdx, Object.LocalOffset.getValue());
+ if (parseStackObjectsDebugInfo(MF, PFS, Object, ObjectIdx))
+ return true;
+ }
+ MFI.setCalleeSavedInfo(CSIInfo);
+ if (!CSIInfo.empty())
+ MFI.setCalleeSavedInfoValid(true);
+
+ // Initialize the various stack object references after initializing the
+ // stack objects.
+ if (!YamlMFI.StackProtector.Value.empty()) {
+ SMDiagnostic Error;
+ int FI;
+ if (parseStackObjectReference(FI, SM, MF, YamlMFI.StackProtector.Value, PFS,
+ IRSlots, Error))
+ return error(Error, YamlMFI.StackProtector.SourceRange);
+ MFI.setStackProtectorIndex(FI);
}
return false;
}
+bool MIRParserImpl::parseCalleeSavedRegister(
+ MachineFunction &MF, PerFunctionMIParsingState &PFS,
+ std::vector<CalleeSavedInfo> &CSIInfo,
+ const yaml::StringValue &RegisterSource, int FrameIdx) {
+ if (RegisterSource.Value.empty())
+ return false;
+ unsigned Reg = 0;
+ SMDiagnostic Error;
+ if (parseNamedRegisterReference(Reg, SM, MF, RegisterSource.Value, PFS,
+ IRSlots, Error))
+ return error(Error, RegisterSource.SourceRange);
+ CSIInfo.push_back(CalleeSavedInfo(Reg, FrameIdx));
+ return false;
+}
+
+/// Verify that given node is of a certain type. Return true on error.
+template <typename T>
+static bool typecheckMDNode(T *&Result, MDNode *Node,
+ const yaml::StringValue &Source,
+ StringRef TypeString, MIRParserImpl &Parser) {
+ if (!Node)
+ return false;
+ Result = dyn_cast<T>(Node);
+ if (!Result)
+ return Parser.error(Source.SourceRange.Start,
+ "expected a reference to a '" + TypeString +
+ "' metadata node");
+ return false;
+}
+
+bool MIRParserImpl::parseStackObjectsDebugInfo(
+ MachineFunction &MF, PerFunctionMIParsingState &PFS,
+ const yaml::MachineStackObject &Object, int FrameIdx) {
+ // Debug information can only be attached to stack objects; Fixed stack
+ // objects aren't supported.
+ assert(FrameIdx >= 0 && "Expected a stack object frame index");
+ MDNode *Var = nullptr, *Expr = nullptr, *Loc = nullptr;
+ if (parseMDNode(Var, Object.DebugVar, MF, PFS) ||
+ parseMDNode(Expr, Object.DebugExpr, MF, PFS) ||
+ parseMDNode(Loc, Object.DebugLoc, MF, PFS))
+ return true;
+ if (!Var && !Expr && !Loc)
+ return false;
+ DILocalVariable *DIVar = nullptr;
+ DIExpression *DIExpr = nullptr;
+ DILocation *DILoc = nullptr;
+ if (typecheckMDNode(DIVar, Var, Object.DebugVar, "DILocalVariable", *this) ||
+ typecheckMDNode(DIExpr, Expr, Object.DebugExpr, "DIExpression", *this) ||
+ typecheckMDNode(DILoc, Loc, Object.DebugLoc, "DILocation", *this))
+ return true;
+ MF.getMMI().setVariableDbgInfo(DIVar, DIExpr, unsigned(FrameIdx), DILoc);
+ return false;
+}
+
+bool MIRParserImpl::parseMDNode(MDNode *&Node, const yaml::StringValue &Source,
+ MachineFunction &MF,
+ const PerFunctionMIParsingState &PFS) {
+ if (Source.Value.empty())
+ return false;
+ SMDiagnostic Error;
+ if (llvm::parseMDNode(Node, SM, MF, Source.Value, PFS, IRSlots, Error))
+ return error(Error, Source.SourceRange);
+ return false;
+}
+
bool MIRParserImpl::initializeConstantPool(
MachineConstantPool &ConstantPool, const yaml::MachineFunction &YamlMF,
const MachineFunction &MF,
YamlConstant.Alignment
? YamlConstant.Alignment
: M.getDataLayout().getPrefTypeAlignment(Value->getType());
- // TODO: Report an error when the same constant pool value ID is redefined.
- ConstantPoolSlots.insert(std::make_pair(
- YamlConstant.ID, ConstantPool.getConstantPoolIndex(Value, Alignment)));
+ unsigned Index = ConstantPool.getConstantPoolIndex(Value, Alignment);
+ if (!ConstantPoolSlots.insert(std::make_pair(YamlConstant.ID.Value, Index))
+ .second)
+ return error(YamlConstant.ID.SourceRange.Start,
+ Twine("redefinition of constant pool item '%const.") +
+ Twine(YamlConstant.ID.Value) + "'");
}
return false;
}
MachineFunction &MF, const yaml::MachineJumpTable &YamlJTI,
PerFunctionMIParsingState &PFS) {
MachineJumpTableInfo *JTI = MF.getOrCreateJumpTableInfo(YamlJTI.Kind);
- SMDiagnostic Error;
for (const auto &Entry : YamlJTI.Entries) {
std::vector<MachineBasicBlock *> Blocks;
for (const auto &MBBSource : Entry.Blocks) {
MachineBasicBlock *MBB = nullptr;
- if (parseMBBReference(MBB, SM, MF, MBBSource.Value, PFS, IRSlots, Error))
- return error(Error, MBBSource.SourceRange);
+ if (parseMBBReference(MBB, MBBSource.Value, MF, PFS))
+ return true;
Blocks.push_back(MBB);
}
unsigned Index = JTI->createJumpTableIndex(Blocks);
- // TODO: Report an error when the same jump table slot ID is redefined.
- PFS.JumpTableSlots.insert(std::make_pair(Entry.ID, Index));
+ if (!PFS.JumpTableSlots.insert(std::make_pair(Entry.ID.Value, Index))
+ .second)
+ return error(Entry.ID.SourceRange.Start,
+ Twine("redefinition of jump table entry '%jump-table.") +
+ Twine(Entry.ID.Value) + "'");
}
return false;
}
+bool MIRParserImpl::parseMBBReference(MachineBasicBlock *&MBB,
+ const yaml::StringValue &Source,
+ MachineFunction &MF,
+ const PerFunctionMIParsingState &PFS) {
+ SMDiagnostic Error;
+ if (llvm::parseMBBReference(MBB, SM, MF, Source.Value, PFS, IRSlots, Error))
+ return error(Error, Source.SourceRange);
+ return false;
+}
+
SMDiagnostic MIRParserImpl::diagFromMIStringDiag(const SMDiagnostic &Error,
SMRange SourceRange) {
assert(SourceRange.isValid() && "Invalid source range");
Error.getFixIts());
}
-SMDiagnostic MIRParserImpl::diagFromLLVMAssemblyDiag(const SMDiagnostic &Error,
- SMRange SourceRange) {
+SMDiagnostic MIRParserImpl::diagFromBlockStringDiag(const SMDiagnostic &Error,
+ SMRange SourceRange) {
assert(SourceRange.isValid());
// Translate the location of the error from the location in the llvm IR string
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