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MIR Serialization: Serialize MachineFrameInfo's callee saved information.

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This commit serializes the callee saved information from the class
'MachineFrameInfo'. This commit extends the YAML mappings for the fixed and
the ordinary stack objects and adds an optional 'callee-saved-register'
attribute. This attribute is used to serialize the callee save information.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@243173 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Alex Lorenz
2015-07-24 22:22:50 +00:00
parent 5136ca2c6d
commit 3a8b87d9ce
5 changed files with 255 additions and 16 deletions
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53
lib/CodeGen/MIRParser/MIRParser.cpp
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@@ -107,10 +107,15 @@ public:
const yaml::MachineFunction &YamlMF,
PerFunctionMIParsingState &PFS);
bool initializeFrameInfo(const Function &F, MachineFrameInfo &MFI,
bool initializeFrameInfo(MachineFunction &MF, MachineFrameInfo &MFI,
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 initializeConstantPool(MachineConstantPool &ConstantPool,
const yaml::MachineFunction &YamlMF,
@@ -273,8 +278,7 @@ bool MIRParserImpl::initializeMachineFunction(MachineFunction &MF) {
PerFunctionMIParsingState PFS;
if (initializeRegisterInfo(MF, MF.getRegInfo(), YamlMF, PFS))
return true;
if (initializeFrameInfo(*MF.getFunction(), *MF.getFrameInfo(), YamlMF,
PFS.StackObjectSlots, PFS.FixedStackObjectSlots))
if (initializeFrameInfo(MF, *MF.getFrameInfo(), YamlMF, PFS))
return true;
if (!YamlMF.Constants.empty()) {
auto *ConstantPool = MF.getConstantPool();
@@ -401,11 +405,11 @@ bool MIRParserImpl::initializeRegisterInfo(MachineFunction &MF,
return false;
}
bool MIRParserImpl::initializeFrameInfo(
const Function &F, MachineFrameInfo &MFI,
const yaml::MachineFunction &YamlMF,
DenseMap<unsigned, int> &StackObjectSlots,
DenseMap<unsigned, int> &FixedStackObjectSlots) {
bool MIRParserImpl::initializeFrameInfo(MachineFunction &MF,
MachineFrameInfo &MFI,
const yaml::MachineFunction &YamlMF,
PerFunctionMIParsingState &PFS) {
const Function &F = *MF.getFunction();
const yaml::MachineFrameInfo &YamlMFI = YamlMF.FrameInfo;
MFI.setFrameAddressIsTaken(YamlMFI.IsFrameAddressTaken);
MFI.setReturnAddressIsTaken(YamlMFI.IsReturnAddressTaken);
@@ -422,6 +426,7 @@ bool MIRParserImpl::initializeFrameInfo(
MFI.setHasVAStart(YamlMFI.HasVAStart);
MFI.setHasMustTailInVarArgFunc(YamlMFI.HasMustTailInVarArgFunc);
std::vector<CalleeSavedInfo> CSIInfo;
// Initialize the fixed frame objects.
for (const auto &Object : YamlMF.FixedStackObjects) {
int ObjectIdx;
@@ -432,7 +437,10 @@ bool MIRParserImpl::initializeFrameInfo(
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));
PFS.FixedStackObjectSlots.insert(std::make_pair(Object.ID, ObjectIdx));
if (parseCalleeSavedRegister(MF, PFS, CSIInfo, Object.CalleeSavedRegister,
ObjectIdx))
return true;
}
// Initialize the ordinary frame objects.
@@ -457,8 +465,29 @@ bool MIRParserImpl::initializeFrameInfo(
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));
PFS.StackObjectSlots.insert(std::make_pair(Object.ID, ObjectIdx));
if (parseCalleeSavedRegister(MF, PFS, CSIInfo, Object.CalleeSavedRegister,
ObjectIdx))
return true;
}
MFI.setCalleeSavedInfo(CSIInfo);
if (!CSIInfo.empty())
MFI.setCalleeSavedInfoValid(true);
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;
}