MIR Serialization: Initial serialization of stack objects.
This commit implements the initial serialization of stack objects from the
MachineFrameInfo class. It can only serialize the ordinary stack objects
(including ordinary spill slots), but it doesn't serialize variable sized or
fixed stack objects yet.
The stack objects are serialized using a YAML sequence of YAML inline mappings.
Each mapping has the object's ID, type, size, offset and alignment. The stack
objects are a part of machine function's YAML mapping.
Reviewers: Duncan P. N. Exon Smith
llvm-svn: 241922
diff --git a/llvm/lib/CodeGen/MIRPrinter.cpp b/llvm/lib/CodeGen/MIRPrinter.cpp
index 3ca9824..8e97ce4 100644
--- a/llvm/lib/CodeGen/MIRPrinter.cpp
+++ b/llvm/lib/CodeGen/MIRPrinter.cpp
@@ -47,6 +47,8 @@
void convert(yaml::MachineFrameInfo &YamlMFI, const MachineFrameInfo &MFI);
void convert(ModuleSlotTracker &MST, yaml::MachineBasicBlock &YamlMBB,
const MachineBasicBlock &MBB);
+ void convertStackObjects(yaml::MachineFunction &MF,
+ const MachineFrameInfo &MFI);
private:
void initRegisterMaskIds(const MachineFunction &MF);
@@ -98,6 +100,7 @@
YamlMF.HasInlineAsm = MF.hasInlineAsm();
convert(YamlMF, MF.getRegInfo(), MF.getSubtarget().getRegisterInfo());
convert(YamlMF.FrameInfo, *MF.getFrameInfo());
+ convertStackObjects(YamlMF, *MF.getFrameInfo());
int I = 0;
ModuleSlotTracker MST(MF.getFunction()->getParent());
@@ -152,6 +155,28 @@
YamlMFI.HasMustTailInVarArgFunc = MFI.hasMustTailInVarArgFunc();
}
+void MIRPrinter::convertStackObjects(yaml::MachineFunction &MF,
+ const MachineFrameInfo &MFI) {
+ unsigned ID = 0;
+ for (int I = 0, E = MFI.getObjectIndexEnd(); I < E; ++I) {
+ if (MFI.isDeadObjectIndex(I))
+ continue;
+
+ yaml::MachineStackObject YamlObject;
+ YamlObject.ID = ID++;
+ YamlObject.Type = MFI.isSpillSlotObjectIndex(I)
+ ? yaml::MachineStackObject::SpillSlot
+ : yaml::MachineStackObject::DefaultType;
+ YamlObject.Offset = MFI.getObjectOffset(I);
+ YamlObject.Size = MFI.getObjectSize(I);
+ 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.
+ }
+}
+
void MIRPrinter::convert(ModuleSlotTracker &MST,
yaml::MachineBasicBlock &YamlMBB,
const MachineBasicBlock &MBB) {