llvmbot wrote:

<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-clang-driver

@llvm/pr-subscribers-clang

Author: Maksim Sabianin (maksimsab)

<details>
<summary>Changes</summary>



---

Patch is 34.84 KiB, truncated to 20.00 KiB below, full version: 
https://github.com/llvm/llvm-project/pull/147508.diff


11 Files Affected:

- (modified) clang/test/Driver/linker-wrapper-image.c (+35) 
- (modified) clang/test/Driver/linker-wrapper.c (+1-1) 
- (modified) clang/tools/clang-linker-wrapper/CMakeLists.txt (+1) 
- (modified) clang/tools/clang-linker-wrapper/ClangLinkerWrapper.cpp (+40-1) 
- (added) llvm/include/llvm/Frontend/SYCL/OffloadWrapper.h (+44) 
- (modified) llvm/include/llvm/Object/OffloadBinary.h (+6-3) 
- (modified) llvm/lib/Frontend/CMakeLists.txt (+1) 
- (added) llvm/lib/Frontend/SYCL/CMakeLists.txt (+14) 
- (added) llvm/lib/Frontend/SYCL/OffloadWrapper.cpp (+513) 
- (modified) llvm/lib/Object/OffloadBinary.cpp (+11) 
- (modified) llvm/unittests/Object/OffloadingTest.cpp (+9) 


``````````diff
diff --git a/clang/test/Driver/linker-wrapper-image.c 
b/clang/test/Driver/linker-wrapper-image.c
index c0de56d58196a..67bb21bfe49b4 100644
--- a/clang/test/Driver/linker-wrapper-image.c
+++ b/clang/test/Driver/linker-wrapper-image.c
@@ -1,6 +1,7 @@
 // REQUIRES: x86-registered-target
 // REQUIRES: nvptx-registered-target
 // REQUIRES: amdgpu-registered-target
+// REQUIRES: spirv-registered-target
 
 // RUN: %clang -cc1 %s -triple x86_64-unknown-linux-gnu -emit-obj -o %t.elf.o
 
@@ -263,3 +264,37 @@
 //      HIP: while.end:
 // HIP-NEXT:   ret void
 // HIP-NEXT: }
+
+// RUN: clang-offload-packager -o %t.out 
--image=file=%t.elf.o,kind=sycl,triple=spirv64-unknown-unknown,arch=generic
+// RUN: %clang -cc1 %s -triple x86_64-unknown-linux-gnu -emit-obj -o %t.o \
+// RUN:   -fembed-offload-object=%t.out
+// RUN: clang-linker-wrapper --print-wrapped-module --dry-run 
--host-triple=x86_64-unknown-linux-gnu \
+// RUN:   --linker-path=/usr/bin/ld %t.o -o a.out 2>&1 | FileCheck %s 
--check-prefixes=SYCL
+// RUN: clang-linker-wrapper --print-wrapped-module --dry-run 
--host-triple=x86_64-unknown-linux-gnu -r \
+// RUN:   --linker-path=/usr/bin/ld %t.o -o a.out 2>&1 | FileCheck %s 
--check-prefixes=SYCL
+
+//      SYCL: %__sycl.tgt_device_image = type { i16, i8, i8, ptr, ptr, ptr, 
ptr, ptr, ptr, ptr, ptr, ptr }
+// SYCL-NEXT: %__sycl.tgt_bin_desc = type { i16, i16, ptr, ptr, ptr }
+
+//      SYCL: @.sycl_offloading.target.0 = internal unnamed_addr constant [1 x 
i8] zeroinitializer
+// SYCL-NEXT: @.sycl_offloading.opts.compile.0 = internal unnamed_addr 
constant [1 x i8] zeroinitializer
+// SYCL-NEXT: @.sycl_offloading.opts.link.0 = internal unnamed_addr constant 
[1 x i8] zeroinitializer
+// SYCL-NEXT: @.sycl_offloading.0.data = internal unnamed_addr constant [0 x 
i8] zeroinitializer
+// SYCL-NEXT: @.sycl_offloading.0.info = internal local_unnamed_addr constant 
[2 x i64] [i64 ptrtoint (ptr @.sycl_offloading.0.data to i64), i64 0], section 
".tgtimg", align 16
+// SYCL-NEXT: @llvm.used = appending global [1 x ptr] [ptr 
@.sycl_offloading.0.info], section "llvm.metadata"
+// SYCL-NEXT: @.sycl_offloading.device_images = internal unnamed_addr constant 
[1 x %__sycl.tgt_device_image] [%__sycl.tgt_device_image { i16 3, i8 8, i8 0, 
ptr @.sycl_offloading.target.0, ptr @.sycl_offloading.opts.compile.0, ptr 
@.sycl_offloading.opts.link.0, ptr @.sycl_offloading.0.data, ptr 
@.sycl_offloading.0.data, ptr null, ptr null, ptr null, ptr null }]
+// SYCL-NEXT: @.sycl_offloading.descriptor = internal constant 
%__sycl.tgt_bin_desc { i16 1, i16 1, ptr @.sycl_offloading.device_images, ptr 
null, ptr null }
+// SYCL-NEXT: @llvm.global_ctors = appending global [1 x { i32, ptr, ptr }] [{ 
i32, ptr, ptr } { i32 1, ptr @sycl.descriptor_reg, ptr null }]
+// SYCL-NEXT: @llvm.global_dtors = appending global [1 x { i32, ptr, ptr }] [{ 
i32, ptr, ptr } { i32 1, ptr @sycl.descriptor_unreg, ptr null }]
+
+//      SYCL: define internal void @sycl.descriptor_reg() section 
".text.startup" {
+// SYCL-NEXT: entry:
+// SYCL-NEXT:   call void @__sycl_register_lib(ptr 
@.sycl_offloading.descriptor)
+// SYCL-NEXT:   ret void
+// SYCL-NEXT: }
+
+//      SYCL: define internal void @sycl.descriptor_unreg() section 
".text.startup" {
+// SYCL-NEXT: entry:
+// SYCL-NEXT:   call void @__sycl_unregister_lib(ptr 
@.sycl_offloading.descriptor)
+// SYCL-NEXT:   ret void
+// SYCL-NEXT: }
diff --git a/clang/test/Driver/linker-wrapper.c 
b/clang/test/Driver/linker-wrapper.c
index 80b1a5745a123..5ab8a09660e57 100644
--- a/clang/test/Driver/linker-wrapper.c
+++ b/clang/test/Driver/linker-wrapper.c
@@ -54,7 +54,7 @@ __attribute__((visibility("protected"), used)) int x;
 // RUN: clang-offload-packager -o %t.out \
 // RUN:   
--image=file=%t.spirv.bc,kind=sycl,triple=spirv64-unknown-unknown,arch=generic
 // RUN: %clang -cc1 %s -triple x86_64-unknown-linux-gnu -emit-obj -o %t.o 
-fembed-offload-object=%t.out
-// RUN: not clang-linker-wrapper --host-triple=x86_64-unknown-linux-gnu 
--dry-run \
+// RUN: clang-linker-wrapper --host-triple=x86_64-unknown-linux-gnu --dry-run \
 // RUN:   --linker-path=/usr/bin/ld %t.o -o a.out 2>&1 | FileCheck %s 
--check-prefix=SPIRV-LINK
 
 // SPIRV-LINK: clang{{.*}} -o {{.*}}.img --target=spirv64-unknown-unknown 
{{.*}}.o --sycl-link -Xlinker -triple=spirv64-unknown-unknown -Xlinker -arch=
diff --git a/clang/tools/clang-linker-wrapper/CMakeLists.txt 
b/clang/tools/clang-linker-wrapper/CMakeLists.txt
index bf37d8031025e..741e3fbbefb74 100644
--- a/clang/tools/clang-linker-wrapper/CMakeLists.txt
+++ b/clang/tools/clang-linker-wrapper/CMakeLists.txt
@@ -16,6 +16,7 @@ set(LLVM_LINK_COMPONENTS
   CodeGen
   LTO
   FrontendOffloading
+  FrontendSYCL
   )
 
 set(LLVM_TARGET_DEFINITIONS LinkerWrapperOpts.td)
diff --git a/clang/tools/clang-linker-wrapper/ClangLinkerWrapper.cpp 
b/clang/tools/clang-linker-wrapper/ClangLinkerWrapper.cpp
index 0f1fa8b329fd6..9a466d6e69c31 100644
--- a/clang/tools/clang-linker-wrapper/ClangLinkerWrapper.cpp
+++ b/clang/tools/clang-linker-wrapper/ClangLinkerWrapper.cpp
@@ -22,6 +22,7 @@
 #include "llvm/CodeGen/CommandFlags.h"
 #include "llvm/Frontend/Offloading/OffloadWrapper.h"
 #include "llvm/Frontend/Offloading/Utility.h"
+#include "llvm/Frontend/SYCL/OffloadWrapper.h"
 #include "llvm/IR/Constants.h"
 #include "llvm/IR/DiagnosticPrinter.h"
 #include "llvm/IR/Module.h"
@@ -711,6 +712,13 @@ wrapDeviceImages(ArrayRef<std::unique_ptr<MemoryBuffer>> 
Buffers,
             M, BuffersToWrap.front(), offloading::getOffloadEntryArray(M)))
       return std::move(Err);
     break;
+  case OFK_SYCL: {
+    offloading::sycl::SYCLWrappingOptions WrappingOptions;
+    if (Error Err = offloading::sycl::wrapSYCLBinaries(M, BuffersToWrap,
+                                                       WrappingOptions))
+      return Err;
+    break;
+  }
   default:
     return createStringError(getOffloadKindName(Kind) +
                              " wrapping is not supported");
@@ -748,6 +756,36 @@ bundleOpenMP(ArrayRef<OffloadingImage> Images) {
   return std::move(Buffers);
 }
 
+Expected<SmallVector<std::unique_ptr<MemoryBuffer>>>
+bundleSYCL(ArrayRef<OffloadingImage> Images) {
+  SmallVector<std::unique_ptr<MemoryBuffer>> Buffers;
+  if (DryRun) {
+    // In dry-run mode there is an empty input which is insufficient for
+    // the testing. Therefore, we insert a stub value.
+    OffloadBinary::OffloadingImage Image;
+    Image.TheOffloadKind = OffloadKind::OFK_SYCL;
+    Image.Image = MemoryBuffer::getMemBufferCopy("");
+    SmallString<0> SerializedImage = OffloadBinary::write(Image);
+    Buffers.emplace_back(MemoryBuffer::getMemBufferCopy(SerializedImage));
+    return Buffers;
+  }
+
+  for (const OffloadingImage &TheImage : Images) {
+    SmallVector<OffloadFile> OffloadBinaries;
+    if (Error E = extractOffloadBinaries(*TheImage.Image, OffloadBinaries))
+      return E;
+
+    for (const OffloadFile &File : OffloadBinaries) {
+      const OffloadBinary &Binary = *File.getBinary();
+      SmallString<0> SerializedImage =
+          OffloadBinary::write(Binary.getOffloadingImage());
+      Buffers.emplace_back(MemoryBuffer::getMemBufferCopy(SerializedImage));
+    }
+  }
+
+  return Buffers;
+}
+
 Expected<SmallVector<std::unique_ptr<MemoryBuffer>>>
 bundleCuda(ArrayRef<OffloadingImage> Images, const ArgList &Args) {
   SmallVector<std::pair<StringRef, StringRef>, 4> InputFiles;
@@ -800,8 +838,9 @@ bundleLinkedOutput(ArrayRef<OffloadingImage> Images, const 
ArgList &Args,
   llvm::TimeTraceScope TimeScope("Bundle linked output");
   switch (Kind) {
   case OFK_OpenMP:
-  case OFK_SYCL:
     return bundleOpenMP(Images);
+  case OFK_SYCL:
+    return bundleSYCL(Images);
   case OFK_Cuda:
     return bundleCuda(Images, Args);
   case OFK_HIP:
diff --git a/llvm/include/llvm/Frontend/SYCL/OffloadWrapper.h 
b/llvm/include/llvm/Frontend/SYCL/OffloadWrapper.h
new file mode 100644
index 0000000000000..f89411c86984d
--- /dev/null
+++ b/llvm/include/llvm/Frontend/SYCL/OffloadWrapper.h
@@ -0,0 +1,44 @@
+//===----- OffloadWrapper.h -------------------------------------*- C++ 
-*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM 
Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_FRONTEND_SYCL_OFFLOAD_WRAPPER_H
+#define LLVM_FRONTEND_SYCL_OFFLOAD_WRAPPER_H
+
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/Object/OffloadBinary.h"
+
+#include <string>
+
+namespace llvm {
+
+class Module;
+
+namespace offloading {
+namespace sycl {
+
+struct SYCLWrappingOptions {
+  // target/compiler specific options what are suggested to use to "compile"
+  // program at runtime.
+  std::string CompileOptions;
+  // Target/Compiler specific options that are suggested to use to "link"
+  // program at runtime.
+  std::string LinkOptions;
+};
+
+/// Wraps OffloadBinaries in the given \p Buffers into the module \p M
+/// as global symbols and registers the images with the SYCL Runtime.
+/// \param Options Settings that allows to turn on optional data and settings.
+llvm::Error
+wrapSYCLBinaries(llvm::Module &M, llvm::ArrayRef<llvm::ArrayRef<char>> Buffers,
+                 SYCLWrappingOptions Options = SYCLWrappingOptions());
+
+} // namespace sycl
+} // namespace offloading
+} // namespace llvm
+
+#endif // LLVM_FRONTEND_SYCL_OFFLOAD_WRAPPER_H
diff --git a/llvm/include/llvm/Object/OffloadBinary.h 
b/llvm/include/llvm/Object/OffloadBinary.h
index b5c845fa8eb70..9d137db834f08 100644
--- a/llvm/include/llvm/Object/OffloadBinary.h
+++ b/llvm/include/llvm/Object/OffloadBinary.h
@@ -48,6 +48,7 @@ enum ImageKind : uint16_t {
   IMG_Cubin,
   IMG_Fatbinary,
   IMG_PTX,
+  IMG_SPIRV,
   IMG_LAST,
 };
 
@@ -70,9 +71,9 @@ class OffloadBinary : public Binary {
 
   /// The offloading metadata that will be serialized to a memory buffer.
   struct OffloadingImage {
-    ImageKind TheImageKind;
-    OffloadKind TheOffloadKind;
-    uint32_t Flags;
+    ImageKind TheImageKind = ImageKind::IMG_None;
+    OffloadKind TheOffloadKind = OffloadKind::OFK_None;
+    uint32_t Flags = 0;
     MapVector<StringRef, StringRef> StringData;
     std::unique_ptr<MemoryBuffer> Image;
   };
@@ -84,6 +85,8 @@ class OffloadBinary : public Binary {
   /// Serialize the contents of \p File to a binary buffer to be read later.
   LLVM_ABI static SmallString<0> write(const OffloadingImage &);
 
+  OffloadingImage getOffloadingImage() const;
+
   static uint64_t getAlignment() { return 8; }
 
   ImageKind getImageKind() const { return TheEntry->TheImageKind; }
diff --git a/llvm/lib/Frontend/CMakeLists.txt b/llvm/lib/Frontend/CMakeLists.txt
index 3b31e6f8dec96..6c4b8362c04fd 100644
--- a/llvm/lib/Frontend/CMakeLists.txt
+++ b/llvm/lib/Frontend/CMakeLists.txt
@@ -5,3 +5,4 @@ add_subdirectory(HLSL)
 add_subdirectory(OpenACC)
 add_subdirectory(OpenMP)
 add_subdirectory(Offloading)
+add_subdirectory(SYCL)
diff --git a/llvm/lib/Frontend/SYCL/CMakeLists.txt 
b/llvm/lib/Frontend/SYCL/CMakeLists.txt
new file mode 100644
index 0000000000000..355ae5f7955a8
--- /dev/null
+++ b/llvm/lib/Frontend/SYCL/CMakeLists.txt
@@ -0,0 +1,14 @@
+add_llvm_component_library(LLVMFrontendSYCL
+  OffloadWrapper.cpp
+
+  ADDITIONAL_HEADER_DIRS
+  ${LLVM_MAIN_INCLUDE_DIR}/llvm/Frontend
+  ${LLVM_MAIN_INCLUDE_DIR}/llvm/Frontend/SYCL
+
+  LINK_COMPONENTS
+  Core
+  FrontendOffloading
+  Object
+  Support
+  TransformUtils
+  )
diff --git a/llvm/lib/Frontend/SYCL/OffloadWrapper.cpp 
b/llvm/lib/Frontend/SYCL/OffloadWrapper.cpp
new file mode 100644
index 0000000000000..c0d160c39e93d
--- /dev/null
+++ b/llvm/lib/Frontend/SYCL/OffloadWrapper.cpp
@@ -0,0 +1,513 @@
+//===- SYCLOffloadWrapper.cpp -----------------------------------*- C++ 
-*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM 
Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Frontend/SYCL/OffloadWrapper.h"
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/ADT/Twine.h"
+#include "llvm/Frontend/Offloading/Utility.h"
+#include "llvm/IR/Constants.h"
+#include "llvm/IR/DerivedTypes.h"
+#include "llvm/IR/GlobalVariable.h"
+#include "llvm/IR/IRBuilder.h"
+#include "llvm/IR/LLVMContext.h"
+#include "llvm/IR/Module.h"
+#include "llvm/IR/Type.h"
+#include "llvm/Object/OffloadBinary.h"
+#include "llvm/Support/Error.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/LineIterator.h"
+#include "llvm/Support/MemoryBufferRef.h"
+#include "llvm/Transforms/Utils/ModuleUtils.h"
+
+#include <memory>
+#include <string>
+#include <utility>
+
+using namespace llvm;
+using namespace llvm::object;
+using namespace llvm::offloading;
+using namespace llvm::offloading::sycl;
+
+using OffloadingImage = OffloadBinary::OffloadingImage;
+
+namespace {
+
+/// Wrapper helper class that creates all LLVM IRs wrapping given images.
+struct Wrapper {
+  Module &M;
+  LLVMContext &C;
+  SYCLWrappingOptions Options;
+
+  StructType *EntryTy = nullptr;
+  StructType *SyclDeviceImageTy = nullptr;
+  StructType *SyclBinDescTy = nullptr;
+
+  Wrapper(Module &M, const SYCLWrappingOptions &Options)
+      : M(M), C(M.getContext()), Options(Options) {
+
+    EntryTy = offloading::getEntryTy(M);
+    SyclDeviceImageTy = getSyclDeviceImageTy();
+    SyclBinDescTy = getSyclBinDescTy();
+  }
+
+  IntegerType *getSizeTTy() {
+    switch (M.getDataLayout().getPointerSize()) {
+    case 4:
+      return Type::getInt32Ty(C);
+    case 8:
+      return Type::getInt64Ty(C);
+    }
+    llvm_unreachable("unsupported pointer type size");
+  }
+
+  SmallVector<Constant *, 2> getSizetConstPair(size_t First, size_t Second) {
+    IntegerType *SizeTTy = getSizeTTy();
+    return SmallVector<Constant *, 2>{ConstantInt::get(SizeTTy, First),
+                                      ConstantInt::get(SizeTTy, Second)};
+  }
+
+  /// Note: Properties aren't supported and the support is going
+  /// to be added later.
+  /// Creates a structure corresponding to:
+  /// SYCL specific image descriptor type.
+  /// \code
+  /// struct __sycl.tgt_device_image {
+  ///   // version of this structure - for backward compatibility;
+  ///   // all modifications which change order/type/offsets of existing fields
+  ///   // should increment the version.
+  ///   uint16_t Version;
+  ///   // the kind of offload model the image employs.
+  ///   uint8_t OffloadKind;
+  ///   // format of the image data - SPIRV, LLVMIR bitcode, etc
+  ///   uint8_t Format;
+  ///   // null-terminated string representation of the device's target
+  ///   // architecture
+  ///   const char *Arch;
+  ///   // a null-terminated string; target- and compiler-specific options
+  ///   // which are suggested to use to "compile" program at runtime
+  ///   const char *CompileOptions;
+  ///   // a null-terminated string; target- and compiler-specific options
+  ///   // which are suggested to use to "link" program at runtime
+  ///   const char *LinkOptions;
+  ///   // Pointer to the device binary image start
+  ///   void *ImageStart;
+  ///   // Pointer to the device binary image end
+  ///   void *ImageEnd;
+  ///   // the entry table
+  ///   __tgt_offload_entry *EntriesBegin;
+  ///   __tgt_offload_entry *EntriesEnd;
+  ///   const char *PropertiesBegin;
+  ///   const char *PropertiesEnd;
+  /// };
+  /// \endcode
+  StructType *getSyclDeviceImageTy() {
+    return StructType::create(
+        {
+            Type::getInt16Ty(C),       // Version
+            Type::getInt8Ty(C),        // OffloadKind
+            Type::getInt8Ty(C),        // Format
+            PointerType::getUnqual(C), // Arch
+            PointerType::getUnqual(C), // CompileOptions
+            PointerType::getUnqual(C), // LinkOptions
+            PointerType::getUnqual(C), // ImageStart
+            PointerType::getUnqual(C), // ImageEnd
+            PointerType::getUnqual(C), // EntriesBegin
+            PointerType::getUnqual(C), // EntriesEnd
+            PointerType::getUnqual(C), // PropertiesBegin
+            PointerType::getUnqual(C)  // PropertiesEnd
+        },
+        "__sycl.tgt_device_image");
+  }
+
+  /// Creates a structure for SYCL specific binary descriptor type. Corresponds
+  /// to:
+  ///
+  /// \code
+  ///  struct __sycl.tgt_bin_desc {
+  ///    // version of this structure - for backward compatibility;
+  ///    // all modifications which change order/type/offsets of existing 
fields
+  ///    // should increment the version.
+  ///    uint16_t Version;
+  ///    uint16_t NumDeviceImages;
+  ///    __sycl.tgt_device_image *DeviceImages;
+  ///    // the offload entry table
+  ///    __tgt_offload_entry *HostEntriesBegin;
+  ///    __tgt_offload_entry *HostEntriesEnd;
+  ///  };
+  /// \endcode
+  StructType *getSyclBinDescTy() {
+    return StructType::create(
+        {Type::getInt16Ty(C), Type::getInt16Ty(C), PointerType::getUnqual(C),
+         PointerType::getUnqual(C), PointerType::getUnqual(C)},
+        "__sycl.tgt_bin_desc");
+  }
+
+  /// Adds a global readonly variable that is initialized by given
+  /// \p Initializer to the module.
+  GlobalVariable *addGlobalArrayVariable(const Twine &Name,
+                                         ArrayRef<char> Initializer,
+                                         const Twine &Section = "") {
+    auto *Arr = ConstantDataArray::get(M.getContext(), Initializer);
+    auto *Var = new GlobalVariable(M, Arr->getType(), /*isConstant*/ true,
+                                   GlobalVariable::InternalLinkage, Arr, Name);
+    Var->setUnnamedAddr(GlobalValue::UnnamedAddr::Global);
+
+    SmallVector<char, 32> NameBuf;
+    auto SectionName = Section.toStringRef(NameBuf);
+    if (!SectionName.empty())
+      Var->setSection(SectionName);
+    return Var;
+  }
+
+  /// Adds given \p Buf as a global variable into the module.
+  /// \returns Pair of pointers that point at the beginning and the end of the
+  /// variable.
+  std::pair<Constant *, Constant *>
+  addArrayToModule(ArrayRef<char> Buf, const Twine &Name,
+                   const Twine &Section = "") {
+    auto *Var = addGlobalArrayVariable(Name, Buf, Section);
+    auto *ImageB = ConstantExpr::getGetElementPtr(Var->getValueType(), Var,
+                                                  getSizetConstPair(0, 0));
+    auto *ImageE = ConstantExpr::getGetElementPtr(
+        Var->getValueType(), Var, getSizetConstPair(0, Buf.size()));
+    return std::make_pair(ImageB, ImageE);
+  }
+
+  /// Adds given \p Data as constant byte array in the module.
+  /// \returns Constant pointer to the added data. The pointer type does not
+  /// carry size information.
+  Constant *addRawDataToModule(ArrayRef<char> Data, const Twine &Name) {
+    auto *Var = addGlobalArrayVariable(Name, Data);
+    auto *DataPtr = ConstantExpr::getGetElementPtr(Var->getValueType(), Var,
+                                                   getSizetConstPair(0, 0));
+    return DataPtr;
+  }
+
+  /// Creates a global variable of const char* type and creates an
+  /// initializer that initializes it with \p Str.
+  ///
+  /// \returns Link-time constant pointer (constant expr) to that
+  /// variable.
+  Constant *addStringToModule(StringRef Str, const Twine &Name) {
+    auto *Arr = ConstantDataArray::getString(C, Str);
+    auto *Var = new GlobalVariable(M, Arr->getType(), /*isConstant*/ true,
+                                   GlobalVariable::InternalLinkage, Arr, Name);
+    Var->setUnnamedAddr(GlobalValue::UnnamedAddr::Global);
+    auto *Zero = ConstantInt::get(getSizeTTy(), 0);
+    Constant *ZeroZero[] = {Zero, Zero};
+    return ConstantExpr::getGetElementPtr(Var->getValueType(), Var, ZeroZero);
+  }
+
+  /// Creates a global variable of array of structs and initializes
+  /// it with the given values in \p ArrayData.
+  ///
+  /// \returns Pair of Constants that point at array content.
+  /// If \p ArrayData is empty then a returned pair contains nullptrs.
+  std::pair<Constant *, Constant *>
+  addStructArrayToModule(ArrayRef<Constant *> ArrayData, Type *ElemTy) {
+    if (ArrayData.empty()) {
+      auto *PtrTy = llvm::PointerType::getUnqual(ElemTy->getContext());
+      auto *NullPtr = Constant::getNullValue(PtrTy)...
[truncated]

``````````

</details>


https://github.com/llvm/llvm-project/pull/147508
_______________________________________________
cfe-commits mailing list
cfe-commits@lists.llvm.org
https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits

Reply via email to