[DebugInfo] Don't emit checksums when compiling a preprocessed CPP
Fixes PR41215
Differential Revision: https://reviews.llvm.org/D60283
llvm-svn: 361296
diff --git a/clang/lib/CodeGen/CGDebugInfo.cpp b/clang/lib/CodeGen/CGDebugInfo.cpp
index 4c43c00..f436cab 100644
--- a/clang/lib/CodeGen/CGDebugInfo.cpp
+++ b/clang/lib/CodeGen/CGDebugInfo.cpp
@@ -422,8 +422,12 @@
}
SmallString<32> Checksum;
+
+ // Compute the checksum if possible. If the location is affected by a #line
+ // directive that refers to a file, PLoc will have an invalid FileID, and we
+ // will correctly get no checksum.
Optional<llvm::DIFile::ChecksumKind> CSKind =
- computeChecksum(SM.getFileID(Loc), Checksum);
+ computeChecksum(PLoc.getFileID(), Checksum);
Optional<llvm::DIFile::ChecksumInfo<StringRef>> CSInfo;
if (CSKind)
CSInfo.emplace(*CSKind, Checksum);