Update clang to r339409b.
Change-Id: Ied8a188bb072c40035320acedc86164b66d920af
diff --git a/linux-x64/clang/include/llvm/MC/MCObjectStreamer.h b/linux-x64/clang/include/llvm/MC/MCObjectStreamer.h
index 035206d..c9e577b 100644
--- a/linux-x64/clang/include/llvm/MC/MCObjectStreamer.h
+++ b/linux-x64/clang/include/llvm/MC/MCObjectStreamer.h
@@ -179,7 +179,9 @@
///
/// Emit the absolute difference between \c Hi and \c Lo, as long as we can
/// compute it. Currently, that requires that both symbols are in the same
- /// data fragment. Otherwise, do nothing and return \c false.
+ /// data fragment and that the target has not specified that diff expressions
+ /// require relocations to be emitted. Otherwise, do nothing and return
+ /// \c false.
///
/// \pre Offset of \c Hi is greater than the offset \c Lo.
void emitAbsoluteSymbolDiff(const MCSymbol *Hi, const MCSymbol *Lo,