Index: lib/Target/Mips/AsmParser/MipsAsmParser.cpp
===================================================================
--- lib/Target/Mips/AsmParser/MipsAsmParser.cpp
+++ lib/Target/Mips/AsmParser/MipsAsmParser.cpp
@@ -4172,6 +4172,7 @@
   case AsmToken::Plus:
   case AsmToken::Integer:
   case AsmToken::Tilde:
+  case AsmToken::Identifier:
   case AsmToken::String: {
     DEBUG(dbgs() << ".. generic integer\n");
     OperandMatchResultTy ResTy = parseImm(Operands);
@@ -4585,6 +4586,7 @@
   case AsmToken::Plus:
   case AsmToken::Integer:
   case AsmToken::Tilde:
+  case AsmToken::Identifier:
   case AsmToken::String:
     break;
   }
Index: test/MC/Mips/mips64r6/immediate.s
===================================================================
--- test/MC/Mips/mips64r6/immediate.s
+++ test/MC/Mips/mips64r6/immediate.s
@@ -0,0 +1,16 @@
+# RUN: llvm-mc -triple=mips64el-linux-gnu -arch=mips64el -mcpu=mips64r6 %s -filetype=obj -o - | llvm-objdump -d - | FileCheck %s
+
+.text
+
+FRAME_SIZE = 16
+
+andi $4, $5, FRAME_SIZE       # CHECK: andi	$4, $5, 16
+daddiu $4, $5, FRAME_SIZE     # CHECK: daddiu	$4, $5, 16
+lui $4, FRAME_SIZE            # CHECK: aui	$zero, $4, 16
+ori $3, $4, FRAME_SIZE        # CHECK: ori	$3, $4, 16
+slti $4, $3, FRAME_SIZE       # CHECK: slti	$4, $3, 16
+sltiu $7, $8, FRAME_SIZE      # CHECK: sltiu	$7, $8, 16
+xori $4, $5, FRAME_SIZE       # CHECK: xori	$4, $5, 16
+
+
+