[SYCL] [NATIVECPU] Fix debug info handling (#11291)

This fixes a bug that lead to invalid debug info being generated for
Native CPU

Author: PietroGhg

llvm/lib/SYCLLowerIR/PrepareSYCLNativeCPU.cpp

@@ -306,6 +306,8 @@ PreservedAnalyses PrepareSYCLNativeCPUPass::run(Module &M,
       auto *NewI = CallInst::Create(ReplaceFunc->getFunctionType(), ReplaceFunc,
                                     {Arg, getStateArg(I->getFunction())},
                                     "ncpu_call", I);
+      if (I->getMetadata("dbg"))
+        NewI->setDebugLoc(I->getDebugLoc());
       I->replaceAllUsesWith(NewI);
       ToRemove.push_back(I);
     }

sycl/test/native_cpu/multiple_tu.cpp

@@ -4,6 +4,13 @@
 //RUN: %clangxx -fsycl -fsycl-targets=native_cpu %S/Inputs/plusone.cpp -c -o %t_plusone.o
 //RUN: %clangxx -fsycl -fsycl-targets=native_cpu %t_plusone.o %t_main.o %t_init.o -o %t
 //RUN: env ONEAPI_DEVICE_SELECTOR=native_cpu:cpu %t
+
+// Re-run test with -g
+//RUN: %clangxx -fsycl -fsycl-targets=native_cpu -g %s -c -o %t_main-debug.o
+//RUN: %clangxx -fsycl -fsycl-targets=native_cpu -g %S/Inputs/init.cpp -c -o %t_init-debug.o
+//RUN: %clangxx -fsycl -fsycl-targets=native_cpu -g %S/Inputs/plusone.cpp -c -o %t_plusone-debug.o
+//RUN: %clangxx -fsycl -fsycl-targets=native_cpu -g %t_plusone-debug.o %t_main-debug.o %t_init-debug.o -o %t-debug
+//RUN: env ONEAPI_DEVICE_SELECTOR=native_cpu:cpu %t-debug
 #include "Inputs/common.h"
 #include <iostream>
 

sycl/test/native_cpu/vector-add.cpp

@@ -2,6 +2,10 @@
 // RUN: %clangxx -fsycl -fsycl-targets=native_cpu %s -o %t
 // RUN: env ONEAPI_DEVICE_SELECTOR="native_cpu:cpu" %t
 
+// Same test but with -g
+// RUN: %clangxx -fsycl -fsycl-targets=native_cpu %s -g -o %t-debug
+// RUN: env ONEAPI_DEVICE_SELECTOR="native_cpu:cpu" %t-debug
+
 #include <sycl/sycl.hpp>
 
 #include <array>