[ms-inline asm] Add a few comments.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162699 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 5 insertions, 0 deletions

diff --git a/include/clang/AST/Stmt.h b/include/clang/AST/Stmt.h
index 686bce9d25..1f58a978fd 100644
--- a/include/clang/AST/Stmt.h
+++ b/include/clang/AST/Stmt.h
@@ -1368,7 +1368,12 @@ public:
 class AsmStmt : public Stmt {
 protected:
   SourceLocation AsmLoc;
+  /// \brief True if the assembly statement does not have any input or output
+  /// operands.
   bool IsSimple;
+
+  /// \brief If true, treat this inline assembly as having side effects.
+  /// This assembly statement should not be optimized, deleted or moved.
   bool IsVolatile;
 
   unsigned NumOutputs;