[llvm-branch-commits] [llvm] [Offloading] Add support for compressed OffloadBinary types (PR #222774)

[Nick Sarnie via llvm-branch-commits]

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@@ -197,11 +176,64 @@ Error extractFromArchive(const Archive &Library,
   return Error::success();
 }
 
+bool isCompressed(const OffloadBinary::Header &Header) {
+  return Header.Version >= 3 && Header.InflatedSize != 0;
+}
+
+Expected<std::unique_ptr<MemoryBuffer>>
+decompressOffloadBinary(MemoryBufferRef Buf) {
+  const auto *Header =
+      reinterpret_cast<const OffloadBinary::Header *>(Buf.getBufferStart());
+  if (Header->EntriesOffset != sizeof(OffloadBinary::Header) ||
+      Header->EntriesOffset > Header->Size ||
+      Header->InflatedSize < Header->EntriesOffset)
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sarnex wrote:

ah sorry, i missed that `InflatedSize` includes the size of the header, i thought it was just the raw `OffloadingImage` size, makes sense, thanks

https://github.com/llvm/llvm-project/pull/222774