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release/21.x: [llvm-offload-wrapper] Fix Triple and OpenMP handling (#167580) #172151

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release/21.x: [llvm-offload-wrapper] Fix Triple and OpenMP handling (#167580) #172151

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28 changes: 17 additions & 11 deletions llvm/lib/Frontend/Offloading/OffloadWrapper.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -135,21 +135,27 @@ GlobalVariable *createBinDesc(Module &M, ArrayRef<ArrayRef<char>> Bufs,
Image->setAlignment(Align(object::OffloadBinary::getAlignment()));

StringRef Binary(Buf.data(), Buf.size());
assert(identify_magic(Binary) == file_magic::offload_binary &&
"Invalid binary format");

uint64_t BeginOffset = 0;
uint64_t EndOffset = Binary.size();

// Optionally use an offload binary for its offload dumping support.
// The device image struct contains the pointer to the beginning and end of
// the image stored inside of the offload binary. There should only be one
// of these for each buffer so we parse it out manually.
const auto *Header =
reinterpret_cast<const object::OffloadBinary::Header *>(
Binary.bytes_begin());
const auto *Entry = reinterpret_cast<const object::OffloadBinary::Entry *>(
Binary.bytes_begin() + Header->EntryOffset);

auto *Begin = ConstantInt::get(getSizeTTy(M), Entry->ImageOffset);
auto *Size =
ConstantInt::get(getSizeTTy(M), Entry->ImageOffset + Entry->ImageSize);
if (identify_magic(Binary) == file_magic::offload_binary) {
const auto *Header =
reinterpret_cast<const object::OffloadBinary::Header *>(
Binary.bytes_begin());
const auto *Entry =
reinterpret_cast<const object::OffloadBinary::Entry *>(
Binary.bytes_begin() + Header->EntryOffset);
BeginOffset = Entry->ImageOffset;
EndOffset = Entry->ImageOffset + Entry->ImageSize;
}

auto *Begin = ConstantInt::get(getSizeTTy(M), BeginOffset);
auto *Size = ConstantInt::get(getSizeTTy(M), EndOffset);
Constant *ZeroBegin[] = {Zero, Begin};
Constant *ZeroSize[] = {Zero, Size};

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