[SYCL] Remove devicelib jit link

clang/test/Driver/sycl-linker-wrapper-image.cpp

@@ -44,21 +44,18 @@ int main() {
 // CHECK-DAG: @.sycl_offloading.target.0 = internal unnamed_addr constant [7 x i8] c"spir64\00"
 // CHECK-DAG: @.sycl_offloading.opts.compile.0 = internal unnamed_addr constant [1 x i8] zeroinitializer
 // CHECK-DAG: @.sycl_offloading.opts.link.0 = internal unnamed_addr constant [1 x i8] zeroinitializer
-// CHECK-DAG: @prop = internal unnamed_addr constant [17 x i8] c"DeviceLibReqMask\00"
-// CHECK-DAG: @__sycl_offload_prop_sets_arr = internal constant [1 x %_pi_device_binary_property_struct] [%_pi_device_binary_property_struct { ptr @prop, ptr null, i32 1, i64 0 }]
-// CHECK-DAG: @SYCL_PropSetName = internal unnamed_addr constant [24 x i8] c"SYCL/devicelib req mask\00"
-// CHECK-DAG: @prop.1 = internal unnamed_addr constant [8 x i8] c"aspects\00"
+// CHECK-DAG: @prop = internal unnamed_addr constant [8 x i8] c"aspects\00"
 // CHECK-DAG: @prop_val = internal unnamed_addr constant [8 x i8] zeroinitializer
-// CHECK-DAG: @__sycl_offload_prop_sets_arr.2 = internal constant [1 x %_pi_device_binary_property_struct] [%_pi_device_binary_property_struct { ptr @prop.1, ptr @prop_val, i32 2, i64 8 }]
-// CHECK-DAG: @SYCL_PropSetName.3 = internal unnamed_addr constant [25 x i8] c"SYCL/device requirements\00"
-// CHECK-DAG: @SYCL_PropSetName.4 = internal unnamed_addr constant [22 x i8] c"SYCL/kernel param opt\00"
-// CHECK-DAG: @__sycl_offload_prop_sets_arr.5 = internal constant [3 x %_pi_device_binary_property_set_struct] [%_pi_device_binary_property_set_struct { ptr @SYCL_PropSetName, ptr @__sycl_offload_prop_sets_arr, ptr getelementptr ([1 x %_pi_device_binary_property_struct], ptr @__sycl_offload_prop_sets_arr, i64 0, i64 1) }, %_pi_device_binary_property_set_struct { ptr @SYCL_PropSetName.3, ptr @__sycl_offload_prop_sets_arr.2, ptr getelementptr ([1 x %_pi_device_binary_property_struct], ptr @__sycl_offload_prop_sets_arr.2, i64 0, i64 1) }, %_pi_device_binary_property_set_struct { ptr @SYCL_PropSetName.4, ptr null, ptr null }]
+// CHECK-DAG: @__sycl_offload_prop_sets_arr = internal constant [1 x %_pi_device_binary_property_struct] [%_pi_device_binary_property_struct { ptr @prop, ptr @prop_val, i32 2, i64 8 }]
+// CHECK-DAG: @SYCL_PropSetName = internal unnamed_addr constant [25 x i8] c"SYCL/device requirements\00"
+// CHECK-DAG: @SYCL_PropSetName.1 = internal unnamed_addr constant [22 x i8] c"SYCL/kernel param opt\00"
+// CHECK-DAG: @__sycl_offload_prop_sets_arr.2 = internal constant [2 x %_pi_device_binary_property_set_struct] [%_pi_device_binary_property_set_struct { ptr @SYCL_PropSetName, ptr @__sycl_offload_prop_sets_arr, ptr getelementptr ([1 x %_pi_device_binary_property_struct], ptr @__sycl_offload_prop_sets_arr, i64 0, i64 1) }, %_pi_device_binary_property_set_struct { ptr @SYCL_PropSetName.1, ptr null, ptr null }]
 // CHECK-DAG: @.sycl_offloading.0.data = internal unnamed_addr constant [912 x i8]
 // CHECK-DAG: @__sycl_offload_entry_name = internal unnamed_addr constant [25 x i8] c"_ZTSZ4mainE11fake_kernel\00"
 // CHECK-DAG: @__sycl_offload_entries_arr = internal constant [1 x %struct.__tgt_offload_entry] [%struct.__tgt_offload_entry { i64 0, i16 1, i16 8, i32 0, ptr null, ptr @__sycl_offload_entry_name, i64 0, i64 0, ptr null }]
 // CHECK-DAG: @.sycl_offloading.0.info = internal local_unnamed_addr constant [2 x i64] [i64 ptrtoint (ptr @.sycl_offloading.0.data to i64), i64 912], section ".tgtimg", align 16
 // CHECK-DAG: @llvm.used = appending global [1 x ptr] [ptr @.sycl_offloading.0.info], section "llvm.metadata"
-// CHECK-DAG: @.sycl_offloading.device_images = internal unnamed_addr constant [1 x %__sycl.tgt_device_image] [%__sycl.tgt_device_image { i16 3, i8 4, 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 getelementptr ([912 x i8], ptr @.sycl_offloading.0.data, i64 0, i64 912), ptr @__sycl_offload_entries_arr, ptr getelementptr ([1 x %struct.__tgt_offload_entry], ptr @__sycl_offload_entries_arr, i64 0, i64 1), ptr @__sycl_offload_prop_sets_arr.5, ptr getelementptr ([3 x %_pi_device_binary_property_set_struct], ptr @__sycl_offload_prop_sets_arr.5, i64 0, i64 3) }]
+// CHECK-DAG: @.sycl_offloading.device_images = internal unnamed_addr constant [1 x %__sycl.tgt_device_image] [%__sycl.tgt_device_image { i16 3, i8 4, 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 getelementptr ([912 x i8], ptr @.sycl_offloading.0.data, i64 0, i64 912), ptr @__sycl_offload_entries_arr, ptr getelementptr ([1 x %struct.__tgt_offload_entry], ptr @__sycl_offload_entries_arr, i64 0, i64 1), ptr @__sycl_offload_prop_sets_arr.2, ptr getelementptr ([2 x %_pi_device_binary_property_set_struct], ptr @__sycl_offload_prop_sets_arr.2, i64 0, i64 2) }]
 // CHECK-DAG: @.sycl_offloading.descriptor = internal constant %__sycl.tgt_bin_desc { i16 1, i16 1, ptr @.sycl_offloading.device_images, ptr null, ptr null }
 // CHECK-DAG: @llvm.global_ctors = {{.*}} { i32 1, ptr @sycl.descriptor_reg, ptr null }]
 // CHECK-DAG: @llvm.global_dtors = {{.*}} { i32 1, ptr @sycl.descriptor_unreg, ptr null }]

llvm/include/llvm/SYCLLowerIR/SYCLDeviceLibBF16.h

@@ -0,0 +1,16 @@
+//===----- SYCLDeviceLibBF16.h - get SYCL devicelib required Info -----=-==//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#pragma once
+
+namespace llvm {
+class Function;
+class Module;
+bool isSYCLDeviceLibBF16Used(const Module &M);
+bool isBF16DeviceLibFuncDecl(const Function &F);
+} // namespace llvm

llvm/include/llvm/SYCLPostLink/ComputeModuleRuntimeInfo.h

@@ -11,7 +11,6 @@
 #pragma once
 
 #include "llvm/ADT/SetVector.h"
-#include "llvm/SYCLLowerIR/SYCLDeviceLibReqMask.h"
 #include "llvm/Support/PropertySetIO.h"
 #include <string>
 namespace llvm {

llvm/include/llvm/Support/PropertySetIO.h

@@ -209,9 +209,6 @@ class PropertySetRegistry {
       "SYCL/specialization constants";
   static constexpr char SYCL_SPEC_CONSTANTS_DEFAULT_VALUES[] =
       "SYCL/specialization constants default values";
-  // TODO: remove SYCL_DEVICELIB_REQ_MASK when devicelib online linking path
-  // is totally removed.
-  static constexpr char SYCL_DEVICELIB_REQ_MASK[] = "SYCL/devicelib req mask";
   static constexpr char SYCL_DEVICELIB_METADATA[] = "SYCL/devicelib metadata";
   static constexpr char SYCL_KERNEL_PARAM_OPT_INFO[] = "SYCL/kernel param opt";
   static constexpr char SYCL_PROGRAM_METADATA[] = "SYCL/program metadata";

llvm/lib/SYCLLowerIR/CMakeLists.txt

@@ -48,7 +48,7 @@ add_llvm_component_library(LLVMSYCLLowerIR
   SYCLAddOptLevelAttribute.cpp
   SYCLConditionalCallOnDevice.cpp
   SYCLCreateNVVMAnnotations.cpp
-  SYCLDeviceLibReqMask.cpp
+  SYCLDeviceLibBF16.cpp
   SYCLDeviceRequirements.cpp
   SYCLKernelParamOptInfo.cpp
   SYCLJointMatrixTransform.cpp

llvm/lib/SYCLLowerIR/SYCLDeviceLibBF16.cpp

@@ -0,0 +1,61 @@
+//==----- SYCLDeviceLibBF16.cpp - get SYCL BF16 devicelib required Info ----==//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+// This file provides some utils to analyze whether user's device image does
+// depend on sycl bfloat16 device library functions.
+//===----------------------------------------------------------------------===//
+
+#include "llvm/SYCLLowerIR/SYCLDeviceLibBF16.h"
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/IR/Function.h"
+#include "llvm/IR/Module.h"
+#include "llvm/TargetParser/Triple.h"
+
+static constexpr char DEVICELIB_FUNC_PREFIX[] = "__devicelib_";
+
+using namespace llvm;
+
+static llvm::SmallVector<StringRef, 14> BF16DeviceLibFuncs = {
+    "__devicelib_ConvertFToBF16INTEL",
+    "__devicelib_ConvertBF16ToFINTEL",
+    "__devicelib_ConvertFToBF16INTELVec1",
+    "__devicelib_ConvertBF16ToFINTELVec1",
+    "__devicelib_ConvertFToBF16INTELVec2",
+    "__devicelib_ConvertBF16ToFINTELVec2",
+    "__devicelib_ConvertFToBF16INTELVec3",
+    "__devicelib_ConvertBF16ToFINTELVec3",
+    "__devicelib_ConvertFToBF16INTELVec4",
+    "__devicelib_ConvertBF16ToFINTELVec4",
+    "__devicelib_ConvertFToBF16INTELVec8",
+    "__devicelib_ConvertBF16ToFINTELVec8",
+    "__devicelib_ConvertFToBF16INTELVec16",
+    "__devicelib_ConvertBF16ToFINTELVec16",
+};
+
+bool llvm::isSYCLDeviceLibBF16Used(const Module &M) {
+  if (!Triple(M.getTargetTriple()).isSPIROrSPIRV())
+    return false;
+
+  for (auto Fn : BF16DeviceLibFuncs) {
+    Function *BF16Func = M.getFunction(Fn);
+    if (BF16Func && BF16Func->isDeclaration())
+      return true;
+  }
+
+  return false;
+}
+
+bool llvm::isBF16DeviceLibFuncDecl(const Function &F) {
+  if (!F.isDeclaration() || !F.getName().starts_with(DEVICELIB_FUNC_PREFIX))
+    return false;
+  for (auto BFunc : BF16DeviceLibFuncs) {
+    if (!F.getName().compare(BFunc))
+      return true;
+  }
+
+  return false;
+}