[llvm] Add checksum option for create file (PR #162592)

[peter mckinna via llvm-commits]

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@@ -1095,6 +1095,38 @@ LLVMDIBuilderCreateFile(LLVMDIBuilderRef Builder, const char *Filename,
                                           StringRef(Directory, DirectoryLen)));
 }
 
+static llvm::DIFile::ChecksumKind
+map_from_llvmChecksumKind(LLVMChecksumKind CSKind) {
+  switch (CSKind) {
+  case LLVMChecksumKind::CSK_MD5:
+    return llvm::DIFile::CSK_MD5;
+  case LLVMChecksumKind::CSK_SHA1:
+    return llvm::DIFile::CSK_SHA1;
+  case LLVMChecksumKind::CSK_SHA256:
+    return llvm::DIFile::CSK_SHA256;
+  }
+  llvm_unreachable("Unhandled Checksum Kind");
+}
+
+LLVMMetadataRef LLVMDIBuilderCreateFileWithCheckSum(
+    LLVMDIBuilderRef Builder, const char *Filename, size_t FilenameLen,
+    const char *Directory, size_t DirectoryLen, LLVMChecksumKind ChecksumKind,
+    const char *Checksum, size_t ChecksumLen, const char *Source,
+    size_t SourceLen) {
+  StringRef ChkSum = StringRef(Checksum, ChecksumLen);
+  std::optional<llvm::DIFile::ChecksumInfo<StringRef>> CSInfo;
----------------
demoitem wrote:

Sorry, yes I implemented your first two suggestions but when I tried just using llvm::DIFile::ChecksumInfo<StringRef> I got compile errors no matching function for call. 
I'm not as expert in C++ and or the optional class to figure out how to fix that. Welcome suggestions though.

https://github.com/llvm/llvm-project/pull/162592