[openmp] [llvm] [clang] [clang-tools-extra] [PGO][OpenMP] Instrumentation for GPU devices (PR #76587)

[Joseph Huber via cfe-commits]

================
@@ -959,8 +959,14 @@ void CodeGenPGO::emitCounterIncrement(CGBuilderTy &Builder, const Stmt *S,
 
   unsigned Counter = (*RegionCounterMap)[S];
 
-  llvm::Value *Args[] = {FuncNameVar,
-                         Builder.getInt64(FunctionHash),
+  // Make sure that pointer to global is passed in with zero addrspace
+  // This is relevant during GPU profiling
+  auto *I8Ty = llvm::Type::getInt8Ty(CGM.getLLVMContext());
+  auto *I8PtrTy = llvm::PointerType::getUnqual(I8Ty);
+  auto *NormalizedPtr = llvm::ConstantExpr::getPointerBitCastOrAddrSpaceCast(
+      FuncNameVar, I8PtrTy);
+
----------------
jhuber6 wrote:

```suggestion
  auto *NormalizedPtr = llvm::ConstantExpr::getPointerBitCastOrAddrSpaceCast(
      FuncNameVar, llvm::PointerType::getUnqual(CGM.getLLVMContext());

```
LLVM uses opaque pointers for everything now.

https://github.com/llvm/llvm-project/pull/76587