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MIR Serialization: Serialize the frame index machine operands.

Browse Source 
Reviewers: Duncan P. N. Exon Smith


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242487 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Alex Lorenz
2015-07-16 23:37:45 +00:00
parent 1dd3d83c5e
commit ed2032f17a
10 changed files with 307 additions and 20 deletions
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68
lib/CodeGen/MIRPrinter.cpp
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@@ -32,11 +32,34 @@ using namespace llvm;
namespace {
/// This structure describes how to print out stack object references.
struct FrameIndexOperand {
std::string Name;
unsigned ID;
bool IsFixed;
FrameIndexOperand(StringRef Name, unsigned ID, bool IsFixed)
: Name(Name.str()), ID(ID), IsFixed(IsFixed) {}
/// Return an ordinary stack object reference.
static FrameIndexOperand create(StringRef Name, unsigned ID) {
return FrameIndexOperand(Name, ID, /*IsFixed=*/false);
}
/// Return a fixed stack object reference.
static FrameIndexOperand createFixed(unsigned ID) {
return FrameIndexOperand("", ID, /*IsFixed=*/true);
}
};
/// This class prints out the machine functions using the MIR serialization
/// format.
class MIRPrinter {
raw_ostream &OS;
DenseMap<const uint32_t *, unsigned> RegisterMaskIds;
/// Maps from stack object indices to operand indices which will be used when
/// printing frame index machine operands.
DenseMap<int, FrameIndexOperand> StackObjectOperandMapping;
public:
MIRPrinter(raw_ostream &OS) : OS(OS) {}
@@ -63,14 +86,18 @@ class MIPrinter {
raw_ostream &OS;
ModuleSlotTracker &MST;
const DenseMap<const uint32_t *, unsigned> &RegisterMaskIds;
const DenseMap<int, FrameIndexOperand> &StackObjectOperandMapping;
public:
MIPrinter(raw_ostream &OS, ModuleSlotTracker &MST,
const DenseMap<const uint32_t *, unsigned> &RegisterMaskIds)
: OS(OS), MST(MST), RegisterMaskIds(RegisterMaskIds) {}
const DenseMap<const uint32_t *, unsigned> &RegisterMaskIds,
const DenseMap<int, FrameIndexOperand> &StackObjectOperandMapping)
: OS(OS), MST(MST), RegisterMaskIds(RegisterMaskIds),
StackObjectOperandMapping(StackObjectOperandMapping) {}
void print(const MachineInstr &MI);
void printMBBReference(const MachineBasicBlock &MBB);
void printStackObjectReference(int FrameIndex);
void print(const MachineOperand &Op, const TargetRegisterInfo *TRI);
};
@@ -182,7 +209,7 @@ void MIRPrinter::convertStackObjects(yaml::MachineFunction &MF,
continue;
yaml::FixedMachineStackObject YamlObject;
YamlObject.ID = ID++;
YamlObject.ID = ID;
YamlObject.Type = MFI.isSpillSlotObjectIndex(I)
? yaml::FixedMachineStackObject::SpillSlot
: yaml::FixedMachineStackObject::DefaultType;
@@ -192,8 +219,8 @@ void MIRPrinter::convertStackObjects(yaml::MachineFunction &MF,
YamlObject.IsImmutable = MFI.isImmutableObjectIndex(I);
YamlObject.IsAliased = MFI.isAliasedObjectIndex(I);
MF.FixedStackObjects.push_back(YamlObject);
// TODO: Store the mapping between fixed object IDs and object indices to
// print the fixed stack object references correctly.
StackObjectOperandMapping.insert(
std::make_pair(I, FrameIndexOperand::createFixed(ID++)));
}
// Process ordinary stack objects.
@@ -203,7 +230,7 @@ void MIRPrinter::convertStackObjects(yaml::MachineFunction &MF,
continue;
yaml::MachineStackObject YamlObject;
YamlObject.ID = ID++;
YamlObject.ID = ID;
if (const auto *Alloca = MFI.getObjectAllocation(I))
YamlObject.Name.Value =
Alloca->hasName() ? Alloca->getName() : "<unnamed alloca>";
@@ -217,8 +244,8 @@ void MIRPrinter::convertStackObjects(yaml::MachineFunction &MF,
YamlObject.Alignment = MFI.getObjectAlignment(I);
MF.StackObjects.push_back(YamlObject);
// TODO: Store the mapping between object IDs and object indices to print
// the stack object references correctly.
StackObjectOperandMapping.insert(std::make_pair(
I, FrameIndexOperand::create(YamlObject.Name.Value, ID++)));
}
}
@@ -233,7 +260,8 @@ void MIRPrinter::convert(ModuleSlotTracker &MST,
Entry.ID = ID++;
for (const auto *MBB : Table.MBBs) {
raw_string_ostream StrOS(Str);
MIPrinter(StrOS, MST, RegisterMaskIds).printMBBReference(*MBB);
MIPrinter(StrOS, MST, RegisterMaskIds, StackObjectOperandMapping)
.printMBBReference(*MBB);
Entry.Blocks.push_back(StrOS.str());
Str.clear();
}
@@ -257,7 +285,8 @@ void MIRPrinter::convert(ModuleSlotTracker &MST,
for (const auto *SuccMBB : MBB.successors()) {
std::string Str;
raw_string_ostream StrOS(Str);
MIPrinter(StrOS, MST, RegisterMaskIds).printMBBReference(*SuccMBB);
MIPrinter(StrOS, MST, RegisterMaskIds, StackObjectOperandMapping)
.printMBBReference(*SuccMBB);
YamlMBB.Successors.push_back(StrOS.str());
}
// Print the live in registers.
@@ -274,7 +303,7 @@ void MIRPrinter::convert(ModuleSlotTracker &MST,
std::string Str;
for (const auto &MI : MBB) {
raw_string_ostream StrOS(Str);
MIPrinter(StrOS, MST, RegisterMaskIds).print(MI);
MIPrinter(StrOS, MST, RegisterMaskIds, StackObjectOperandMapping).print(MI);
YamlMBB.Instructions.push_back(StrOS.str());
Str.clear();
}
@@ -327,6 +356,20 @@ void MIPrinter::printMBBReference(const MachineBasicBlock &MBB) {
}
}
void MIPrinter::printStackObjectReference(int FrameIndex) {
auto ObjectInfo = StackObjectOperandMapping.find(FrameIndex);
assert(ObjectInfo != StackObjectOperandMapping.end() &&
"Invalid frame index");
const FrameIndexOperand &Operand = ObjectInfo->second;
if (Operand.IsFixed) {
OS << "%fixed-stack." << Operand.ID;
return;
}
OS << "%stack." << Operand.ID;
if (!Operand.Name.empty())
OS << '.' << Operand.Name;
}
void MIPrinter::print(const MachineOperand &Op, const TargetRegisterInfo *TRI) {
switch (Op.getType()) {
case MachineOperand::MO_Register:
@@ -350,6 +393,9 @@ void MIPrinter::print(const MachineOperand &Op, const TargetRegisterInfo *TRI) {
case MachineOperand::MO_MachineBasicBlock:
printMBBReference(*Op.getMBB());
break;
case MachineOperand::MO_FrameIndex:
printStackObjectReference(Op.getIndex());
break;
case MachineOperand::MO_JumpTableIndex:
OS << "%jump-table." << Op.getIndex();
// TODO: Print target flags.