MIR Serialization: Start serializing the CFI operands with .cfi_def_cfa_offset.
This commit begins serialization of the CFI index machine operands by
serializing one kind of CFI instruction - the .cfi_def_cfa_offset instruction.
Reviewers: Duncan P. N. Exon Smith
llvm-svn: 242845
diff --git a/llvm/lib/CodeGen/MIRPrinter.cpp b/llvm/lib/CodeGen/MIRPrinter.cpp
index 9413a7e..08eafb6 100644
--- a/llvm/lib/CodeGen/MIRPrinter.cpp
+++ b/llvm/lib/CodeGen/MIRPrinter.cpp
@@ -17,6 +17,7 @@
#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"
@@ -103,6 +104,8 @@
void printMBBReference(const MachineBasicBlock &MBB);
void printStackObjectReference(int FrameIndex);
void print(const MachineOperand &Op, const TargetRegisterInfo *TRI);
+
+ void print(const MCCFIInstruction &CFI);
};
} // end anonymous namespace
@@ -347,6 +350,8 @@
assert(TRI && "Expected target register info");
const auto *TII = SubTarget.getInstrInfo();
assert(TII && "Expected target instruction info");
+ if (MI.isCFIInstruction())
+ assert(MI.getNumOperands() == 1 && "Expected 1 operand in CFI instruction");
unsigned I = 0, E = MI.getNumOperands();
for (; I < E && MI.getOperand(I).isReg() && MI.getOperand(I).isDef() &&
@@ -448,12 +453,32 @@
llvm_unreachable("Can't print this machine register mask yet.");
break;
}
+ case MachineOperand::MO_CFIIndex: {
+ const auto &MMI = Op.getParent()->getParent()->getParent()->getMMI();
+ print(MMI.getFrameInstructions()[Op.getCFIIndex()]);
+ break;
+ }
default:
// TODO: Print the other machine operands.
llvm_unreachable("Can't print this machine operand at the moment");
}
}
+void MIPrinter::print(const MCCFIInstruction &CFI) {
+ switch (CFI.getOperation()) {
+ case MCCFIInstruction::OpDefCfaOffset:
+ OS << ".cfi_def_cfa_offset ";
+ if (CFI.getLabel())
+ OS << "<mcsymbol> ";
+ OS << CFI.getOffset();
+ break;
+ default:
+ // TODO: Print the other CFI Operations.
+ OS << "<unserializable cfi operation>";
+ break;
+ }
+}
+
void llvm::printMIR(raw_ostream &OS, const Module &M) {
yaml::Output Out(OS);
Out << const_cast<Module &>(M);