MIR Serialization: Serialize the 'invariant' machine memory operand flag.

llvm-svn: 244230

3 files changed, 8 insertions, 2 deletions

diff --git a/llvm/lib/CodeGen/MIRParser/MILexer.cpp b/llvm/lib/CodeGen/MIRParser/MILexer.cpp
index 47e55017f1e..310ac7b4d71 100644
--- a/llvm/lib/CodeGen/MIRParser/MILexer.cpp
+++ b/llvm/lib/CodeGen/MIRParser/MILexer.cpp
@@ -176,6 +176,7 @@ static MIToken::TokenKind getIdentifierKind(StringRef Identifier) {
       .Case("target-flags", MIToken::kw_target_flags)
       .Case("volatile", MIToken::kw_volatile)
       .Case("non-temporal", MIToken::kw_non_temporal)
+      .Case("invariant", MIToken::kw_invariant)
       .Default(MIToken::Identifier);
 }
 
diff --git a/llvm/lib/CodeGen/MIRParser/MILexer.h b/llvm/lib/CodeGen/MIRParser/MILexer.h
index 1ff7dda1151..79bcb7fce01 100644
--- a/llvm/lib/CodeGen/MIRParser/MILexer.h
+++ b/llvm/lib/CodeGen/MIRParser/MILexer.h
@@ -68,6 +68,7 @@ struct MIToken {
     kw_target_flags,
     kw_volatile,
     kw_non_temporal,
+    kw_invariant,
 
     // Identifier tokens
     Identifier,
@@ -130,7 +131,8 @@ public:
   }
 
   bool isMemoryOperandFlag() const {
-    return Kind == kw_volatile || Kind == kw_non_temporal;
+    return Kind == kw_volatile || Kind == kw_non_temporal ||
+           Kind == kw_invariant;
   }
 
   bool is(TokenKind K) const { return Kind == K; }
diff --git a/llvm/lib/CodeGen/MIRParser/MIParser.cpp b/llvm/lib/CodeGen/MIRParser/MIParser.cpp
index 0c3f5ecce86..36460b3f3eb 100644
--- a/llvm/lib/CodeGen/MIRParser/MIParser.cpp
+++ b/llvm/lib/CodeGen/MIRParser/MIParser.cpp
@@ -1066,8 +1066,11 @@ bool MIParser::parseMemoryOperandFlag(unsigned &Flags) {
   case MIToken::kw_non_temporal:
     Flags |= MachineMemOperand::MONonTemporal;
     break;
+  case MIToken::kw_invariant:
+    Flags |= MachineMemOperand::MOInvariant;
+    break;
   // TODO: report an error when we specify the same flag more than once.
-  // TODO: parse the other memory operand flags.
+  // TODO: parse the target specific memory operand flags.
   default:
     llvm_unreachable("The current token should be a memory operand flag");
   }