MIR Serialization: Serialize the machine basic block live in registers.

llvm-svn: 242204

1 files changed, 8 insertions, 0 deletions

diff --git a/llvm/lib/CodeGen/MIRParser/MIRParser.cpp b/llvm/lib/CodeGen/MIRParser/MIRParser.cpp
index bfec6c59164..16b0e165589 100644
--- a/llvm/lib/CodeGen/MIRParser/MIRParser.cpp
+++ b/llvm/lib/CodeGen/MIRParser/MIRParser.cpp
@@ -321,6 +321,14 @@ bool MIRParserImpl::initializeMachineBasicBlock(
     // 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;