Clarified documentation.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@186551 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/CGDebugInfo.cpp b/lib/CodeGen/CGDebugInfo.cpp
index f735df5a29383f44df72d28746c5c3d32800896a..af861be0cf6ccf8dcdcdbca37352ee93041d3095 100644 (file)
--- a/lib/CodeGen/CGDebugInfo.cpp
+++ b/lib/CodeGen/CGDebugInfo.cpp
@@ -2445,7 +2445,8 @@ void CGDebugInfo::EmitFunctionStart(GlobalDecl GD, QualType FnType,
 }
 
 /// EmitLocation - Emit metadata to indicate a change in line/column
-/// information in the source file.
+/// information in the source file. If the location is invalid, the
+/// previous location will be reused.
 void CGDebugInfo::EmitLocation(CGBuilderTy &Builder, SourceLocation Loc,
                                bool ForceColumnInfo) {