Use isxdigit.

Thanks to Benjamin Kramer for the suggestion.

llvm-svn: 183540

1 files changed, 1 insertions, 9 deletions

diff --git a/llvm/lib/Object/YAML.cpp b/llvm/lib/Object/YAML.cpp
index e63bd5df27c..4e7f0890989 100644
--- a/llvm/lib/Object/YAML.cpp
+++ b/llvm/lib/Object/YAML.cpp
@@ -23,14 +23,6 @@ void yaml::ScalarTraits<object::yaml::BinaryRef>::output(
   Val.writeAsHex(Out);
 }
 
-// Can't find this anywhere else in the codebase (clang has one, but it has
-// some baggage). Deduplicate as required.
-static bool isHexDigit(uint8_t C) {
-  return ('0' <= C && C <= '9') ||
-         ('A' <= C && C <= 'F') ||
-         ('a' <= C && C <= 'f');
-}
-
 StringRef yaml::ScalarTraits<object::yaml::BinaryRef>::input(
     StringRef Scalar, void *, object::yaml::BinaryRef &Val) {
   if (Scalar.size() % 2 != 0)
@@ -38,7 +30,7 @@ StringRef yaml::ScalarTraits<object::yaml::BinaryRef>::input(
   // TODO: Can we improve YAMLIO to permit a more accurate diagnostic here?
   // (e.g. a caret pointing to the offending character).
   for (unsigned I = 0, N = Scalar.size(); I != N; ++I)
-    if (!isHexDigit(Scalar[I]))
+    if (!isxdigit(Scalar[I]))
       return "BinaryRef hex string must contain only hex digits.";
   Val = object::yaml::BinaryRef(Scalar);
   return StringRef();