diff --git a/llvm/include/llvm/MC/MCLinkerOptimizationHint.h b/llvm/include/llvm/MC/MCLinkerOptimizationHint.h
index 50fd527ffe2a..1f91b0de3647 100644
--- a/llvm/include/llvm/MC/MCLinkerOptimizationHint.h
+++ b/llvm/include/llvm/MC/MCLinkerOptimizationHint.h
@@ -45,7 +45,7 @@ static inline StringRef MCLOHDirectiveName() {
   return StringRef(".loh");
 }
 
-static inline bool isValidMCLOHType(MCLOHType Kind) {
+static inline bool isValidMCLOHType(unsigned Kind) {
   return Kind >= MCLOH_AdrpAdrp && Kind <= MCLOH_AdrpLdrGot;
 }
 
diff --git a/llvm/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp b/llvm/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp
index 057a50275724..c4f5449d8694 100644
--- a/llvm/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp
+++ b/llvm/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp
@@ -3985,10 +3985,9 @@ bool AArch64AsmParser::parseDirectiveLOH(StringRef IDVal, SMLoc Loc) {
     // We successfully get a numeric value for the identifier.
     // Check if it is valid.
     int64_t Id = getParser().getTok().getIntVal();
-    Kind = (MCLOHType)Id;
-    // Check that Id does not overflow MCLOHType.
-    if (!isValidMCLOHType(Kind) || Id != Kind)
+    if (Id <= -1U && !isValidMCLOHType(Id))
       return TokError("invalid numeric identifier in directive");
+    Kind = (MCLOHType)Id;
   } else {
     StringRef Name = getTok().getIdentifier();
     // We successfully parse an identifier.