[Support] Use hexdigit. NFC

llvm-svn: 260068

1 files changed, 2 insertions, 3 deletions

diff --git a/llvm/lib/Support/raw_ostream.cpp b/llvm/lib/Support/raw_ostream.cpp
index 592cb96e894..f5a3162e2ba 100644
--- a/llvm/lib/Support/raw_ostream.cpp
+++ b/llvm/lib/Support/raw_ostream.cpp
@@ -420,11 +420,10 @@ raw_ostream &raw_ostream::operator<<(const FormattedNumber &FN) {
       NumberBuffer[1] = '0';
     char *EndPtr = NumberBuffer+Width;
     char *CurPtr = EndPtr;
-    const char A = FN.Upper ? 'A' : 'a';
     unsigned long long N = FN.HexValue;
     while (N) {
-      uintptr_t x = N % 16;
-      *--CurPtr = (x < 10 ? '0' + x : A + x - 10);
+      unsigned char x = static_cast<unsigned char>(N) % 16;
+      *--CurPtr = hexdigit(x, !FN.Upper);
       N /= 16;
     }