================
@@ -164,6 +164,22 @@ publishOutlinedHashTree(std::unique_ptr<OutlinedHashTree>
HashTree) {
CodeGenData::getInstance().publishOutlinedHashTree(std::move(HashTree));
}
+/// Initialize the two-codegen rounds.
+void initializeTwoCodegenRounds();
+
+/// Save the current module before the first codegen round.
+void saveModuleForTwoRounds(const Module &TheModule, unsigned Task);
+
+/// Load the current module before the second codegen round.
+std::unique_ptr<Module> loadModuleForTwoRounds(BitcodeModule &OrigModule,
+ unsigned Task,
+ LLVMContext &Context);
+
+/// Merge the codegen data from the input files in scratch vector in ThinLTO
+/// two-codegen rounds.
+Error mergeCodeGenData(
+ const std::unique_ptr<std::vector<llvm::SmallString<0>>> InputFiles);
----------------
kyulee-com wrote:
> This is similar to a constant pointer. Can we use `ArrayRef` instead somehow?
The function `mergeCodeGenData` takes ownership of `InputFiles`. Once the
function returns, the scratch buffer for the produced object files will be
destroyed. I think this behavior is different from that of `ArrayRef`, which
provides a read-only view into a vector.
https://github.com/llvm/llvm-project/pull/90933
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