Use llvm::endianness::{big,little,native} (NFC)

Note that llvm::support::endianness has been renamed to
llvm::endianness while becoming an enum class. This patch replaces
{big,little,native} with llvm::endianness::{big,little,native}.

This patch completes the migration to llvm::endianness and
llvm::endianness::{big,little,native}.  I'll post a separate patch to
remove the migration helpers in llvm/Support/Endian.h:

  using endianness = llvm::endianness;
  constexpr llvm::endianness big = llvm::endianness::big;
  constexpr llvm::endianness little = llvm::endianness::little;
  constexpr llvm::endianness native = llvm::endianness::native;

1 files changed, 4 insertions, 2 deletions

diff --git a/clang/lib/CodeGen/CodeGenPGO.cpp b/clang/lib/CodeGen/CodeGenPGO.cpp
index df6c76c..63cdd0a 100644
--- a/clang/lib/CodeGen/CodeGenPGO.cpp
+++ b/clang/lib/CodeGen/CodeGenPGO.cpp
@@ -755,7 +755,8 @@ void PGOHash::combine(HashType Type) {
   // Pass through MD5 if enough work has built up.
   if (Count && Count % NumTypesPerWord == 0) {
     using namespace llvm::support;
-    uint64_t Swapped = endian::byte_swap<uint64_t, little>(Working);
+    uint64_t Swapped =
+        endian::byte_swap<uint64_t, llvm::endianness::little>(Working);
     MD5.update(llvm::ArrayRef((uint8_t *)&Swapped, sizeof(Swapped)));
     Working = 0;
   }
@@ -781,7 +782,8 @@ uint64_t PGOHash::finalize() {
       MD5.update({(uint8_t)Working});
     } else {
       using namespace llvm::support;
-      uint64_t Swapped = endian::byte_swap<uint64_t, little>(Working);
+      uint64_t Swapped =
+          endian::byte_swap<uint64_t, llvm::endianness::little>(Working);
       MD5.update(llvm::ArrayRef((uint8_t *)&Swapped, sizeof(Swapped)));
     }
   }