[clang] [flang] [mlir] [LLVM-Flang][Options] Add support for '-fprofile-sample-use' option (PR #188697)

[Hocky Yudhiono via cfe-commits]

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@@ -99,6 +99,10 @@ void FunctionAttrPass::runOnOperation() {
     func->setAttr(
         mlir::LLVM::LLVMFuncOp::getPreferVectorWidthAttrName(llvmFuncOpName),
         mlir::StringAttr::get(context, preferVectorWidth));
+  if (UseSampleProfile)
+    func->setAttr(
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hockyy wrote:

Need to wrap with the `llvm.` prefix addition

https://github.com/llvm/llvm-project/pull/188697