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[SYCL] Rename sycl target image registration functions #1048

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Jan 24, 2020
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8 changes: 6 additions & 2 deletions clang/test/Driver/clang-offload-wrapper.c
Original file line number Diff line number Diff line change
Expand Up @@ -120,13 +120,17 @@
// CHECK-IR: declare void @__tgt_unregister_lib([[DESCTY]]*)

// CHECK-IR: define internal void [[SYCL_REGFN]]()
// CHECK-IR: call void @__tgt_register_lib([[DESCTY]]* bitcast ([[SYCL_DESCTY]]* [[SYCL_DESC]] to [[DESCTY]]*))
// CHECK-IR: call void @__sycl_register_lib([[SYCL_DESCTY]]* [[SYCL_DESC]])
// CHECK-IR: ret void

// CHECK-IR: declare void @__sycl_register_lib([[SYCL_DESCTY]]*)

// CHECK-IR: define internal void [[SYCL_UNREGFN]]()
// CHECK-IR: call void @__tgt_unregister_lib([[DESCTY]]* bitcast ([[SYCL_DESCTY]]* [[SYCL_DESC]] to [[DESCTY]]*))
// CHECK-IR: call void @__sycl_unregister_lib([[SYCL_DESCTY]]* [[SYCL_DESC]])
// CHECK-IR: ret void

// CHECK-IR: declare void @__sycl_unregister_lib([[SYCL_DESCTY]]*)

// -------
// Check options' effects: -emit-reg-funcs, -desc-name
//
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28 changes: 17 additions & 11 deletions clang/tools/clang-offload-wrapper/ClangOffloadWrapper.cpp
Original file line number Diff line number Diff line change
Expand Up @@ -756,15 +756,18 @@ class BinaryWrapper {
Func->setSection(".text.startup");

// Get RegFuncName function declaration.
auto *RegFuncTy = FunctionType::get(Type::getVoidTy(C), getBinDescPtrTy(),
/*isVarArg*/ false);
auto *RegFuncTy = FunctionType::get(
Type::getVoidTy(C),
Kind == OffloadKind::SYCL ? getSyclBinDescPtrTy() : getBinDescPtrTy(),
/*isVarArg=*/false);
FunctionCallee RegFuncC =
M.getOrInsertFunction("__tgt_register_lib", RegFuncTy);
M.getOrInsertFunction(Kind == OffloadKind::SYCL ? "__sycl_register_lib"
: "__tgt_register_lib",
RegFuncTy);

// Construct function body
IRBuilder<> Builder(BasicBlock::Create(C, "entry", Func));
Builder.CreateCall(RegFuncC,
Builder.CreatePointerCast(BinDesc, getBinDescPtrTy()));
Builder.CreateCall(RegFuncC, BinDesc);
Builder.CreateRetVoid();

// Add this function to constructors.
Expand All @@ -779,15 +782,18 @@ class BinaryWrapper {
Func->setSection(".text.startup");

// Get UnregFuncName function declaration.
auto *UnRegFuncTy = FunctionType::get(Type::getVoidTy(C), getBinDescPtrTy(),
/*isVarArg*/ false);
FunctionCallee UnRegFuncC =
M.getOrInsertFunction("__tgt_unregister_lib", UnRegFuncTy);
auto *UnRegFuncTy = FunctionType::get(
Type::getVoidTy(C),
Kind == OffloadKind::SYCL ? getSyclBinDescPtrTy() : getBinDescPtrTy(),
/*isVarArg=*/false);
FunctionCallee UnRegFuncC = M.getOrInsertFunction(
Kind == OffloadKind::SYCL ? "__sycl_unregister_lib"
: "__tgt_unregister_lib",
UnRegFuncTy);

// Construct function body
IRBuilder<> Builder(BasicBlock::Create(C, "entry", Func));
Builder.CreateCall(UnRegFuncC,
Builder.CreatePointerCast(BinDesc, getBinDescPtrTy()));
Builder.CreateCall(UnRegFuncC, BinDesc);
Builder.CreateRetVoid();

// Add this function to global destructors.
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Original file line number Diff line number Diff line change
Expand Up @@ -20,12 +20,12 @@

/// Executed as a part of current module's (.exe, .dll) static initialization.
/// Registers device executable images with the runtime.
extern "C" void __tgt_register_lib(pi_device_binaries desc);
extern "C" void __sycl_register_lib(pi_device_binaries desc);

/// Executed as a part of current module's (.exe, .dll) static
/// de-initialization.
/// Unregisters device executable images with the runtime.
extern "C" void __tgt_unregister_lib(pi_device_binaries desc);
extern "C" void __sycl_unregister_lib(pi_device_binaries desc);

// +++ }

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4 changes: 2 additions & 2 deletions sycl/source/detail/program_manager/program_manager.cpp
Original file line number Diff line number Diff line change
Expand Up @@ -831,11 +831,11 @@ void ProgramManager::dumpImage(const DeviceImage &Img, KernelSetId KSId) const {
} // namespace sycl
} // namespace cl

extern "C" void __tgt_register_lib(pi_device_binaries desc) {
extern "C" void __sycl_register_lib(pi_device_binaries desc) {
cl::sycl::detail::ProgramManager::getInstance().addImages(desc);
}

// Executed as a part of current module's (.exe, .dll) static initialization
extern "C" void __tgt_unregister_lib(pi_device_binaries desc) {
extern "C" void __sycl_unregister_lib(pi_device_binaries desc) {
// TODO implement the function
}
4 changes: 2 additions & 2 deletions sycl/source/ld-version-script.txt
Original file line number Diff line number Diff line change
Expand Up @@ -24,8 +24,8 @@
_Z20__spirv_ocl_prefetch*;

/* Export offload image hooks */
__tgt_register_lib;
__tgt_unregister_lib;
__sycl_register_lib;
__sycl_unregister_lib;

local:
*;
Expand Down