MIR Serialization: Serialize the 'debug-use' register operand flag.

llvm-svn: 244071

4 files changed, 11 insertions, 2 deletions

diff --git a/llvm/lib/CodeGen/MIRParser/MILexer.cpp b/llvm/lib/CodeGen/MIRParser/MILexer.cpp
index 624ef664620..5134da9d455 100644
--- a/llvm/lib/CodeGen/MIRParser/MILexer.cpp
+++ b/llvm/lib/CodeGen/MIRParser/MILexer.cpp
@@ -146,6 +146,7 @@ static MIToken::TokenKind getIdentifierKind(StringRef Identifier) {
       .Case("dead", MIToken::kw_dead)
       .Case("killed", MIToken::kw_killed)
       .Case("undef", MIToken::kw_undef)
+      .Case("debug-use", MIToken::kw_debug_use)
       .Case("frame-setup", MIToken::kw_frame_setup)
       .Case("debug-location", MIToken::kw_debug_location)
       .Case(".cfi_offset", MIToken::kw_cfi_offset)
diff --git a/llvm/lib/CodeGen/MIRParser/MILexer.h b/llvm/lib/CodeGen/MIRParser/MILexer.h
index f72897a5217..9a403496351 100644
--- a/llvm/lib/CodeGen/MIRParser/MILexer.h
+++ b/llvm/lib/CodeGen/MIRParser/MILexer.h
@@ -47,6 +47,7 @@ struct MIToken {
     kw_dead,
     kw_killed,
     kw_undef,
+    kw_debug_use,
     kw_frame_setup,
     kw_debug_location,
     kw_cfi_offset,
@@ -118,7 +119,8 @@ public:
 
   bool isRegisterFlag() const {
     return Kind == kw_implicit || Kind == kw_implicit_define ||
-           Kind == kw_dead || Kind == kw_killed || Kind == kw_undef;
+           Kind == kw_dead || Kind == kw_killed || Kind == kw_undef ||
+           Kind == kw_debug_use;
   }
 
   bool isMemoryOperandFlag() const { return Kind == kw_volatile; }
diff --git a/llvm/lib/CodeGen/MIRParser/MIParser.cpp b/llvm/lib/CodeGen/MIRParser/MIParser.cpp
index 149e4dd1b61..7b9e45ea7f5 100644
--- a/llvm/lib/CodeGen/MIRParser/MIParser.cpp
+++ b/llvm/lib/CodeGen/MIRParser/MIParser.cpp
@@ -490,6 +490,9 @@ bool MIParser::parseRegisterFlag(unsigned &Flags) {
   case MIToken::kw_undef:
     Flags |= RegState::Undef;
     break;
+  case MIToken::kw_debug_use:
+    Flags |= RegState::Debug;
+    break;
   // TODO: report an error when we specify the same flag more than once.
   // TODO: parse the other register flags.
   default:
@@ -532,7 +535,7 @@ bool MIParser::parseRegisterOperand(MachineOperand &Dest, bool IsDef) {
   Dest = MachineOperand::CreateReg(
       Reg, Flags & RegState::Define, Flags & RegState::Implicit,
       Flags & RegState::Kill, Flags & RegState::Dead, Flags & RegState::Undef,
-      /*isEarlyClobber=*/false, SubReg);
+      /*isEarlyClobber=*/false, SubReg, Flags & RegState::Debug);
   return false;
 }
 
@@ -882,6 +885,7 @@ bool MIParser::parseMachineOperand(MachineOperand &Dest) {
   case MIToken::kw_dead:
   case MIToken::kw_killed:
   case MIToken::kw_undef:
+  case MIToken::kw_debug_use:
   case MIToken::underscore:
   case MIToken::NamedRegister:
   case MIToken::VirtualRegister:
diff --git a/llvm/lib/CodeGen/MIRPrinter.cpp b/llvm/lib/CodeGen/MIRPrinter.cpp
index fb5a36ce9a7..2eb5cbfc6ce 100644
--- a/llvm/lib/CodeGen/MIRPrinter.cpp
+++ b/llvm/lib/CodeGen/MIRPrinter.cpp
@@ -529,6 +529,8 @@ void MIPrinter::print(const MachineOperand &Op, const TargetRegisterInfo *TRI) {
       OS << "killed ";
     if (Op.isUndef())
       OS << "undef ";
+    if (Op.isDebug())
+      OS << "debug-use ";
     printReg(Op.getReg(), OS, TRI);
     // Print the sub register.
     if (Op.getSubReg() != 0)