Track LLVM 14 API changes.

Only done on the master branch for now to fix build farm animal seawasp
(which tests bleeeding edge PostgreSQL with bleeding edge LLVM).  We can
back-patch a consolidated fix closer to LLVM 14's release, once its API
has stopped moving around.

Discussion: https://postgr.es/m/CA%2BhUKGL%3Dyg6qqgg6W6SAuvRQejditeoDNy-X3b9H_6Fnw8j5Wg%40mail.gmail.com

src/backend/jit/llvm/llvmjit_inline.cpp

@@ -594,7 +594,11 @@ function_inlinable(llvm::Function &F,
 	if (F.materialize())
 		elog(FATAL, "failed to materialize metadata");
 
-	if (F.getAttributes().hasFnAttribute(llvm::Attribute::NoInline))
+#if LLVM_VERSION_MAJOR < 14
+#define hasFnAttr hasFnAttribute
+#endif
+
+	if (F.getAttributes().hasFnAttr(llvm::Attribute::NoInline))
 	{
 		ilog(DEBUG1, "ineligibile to import %s due to noinline",
 			 F.getName().data());
@@ -871,7 +875,9 @@ create_redirection_function(std::unique_ptr<llvm::Module> &importMod,
 	llvm::Function *AF;
 	llvm::BasicBlock *BB;
 	llvm::CallInst *fwdcall;
+#if LLVM_VERSION_MAJOR < 14
 	llvm::Attribute inlineAttribute;
+#endif
 
 	AF = llvm::Function::Create(F->getFunctionType(),
 								LinkageTypes::AvailableExternallyLinkage,
@@ -880,9 +886,13 @@ create_redirection_function(std::unique_ptr<llvm::Module> &importMod,
 
 	Builder.SetInsertPoint(BB);
 	fwdcall = Builder.CreateCall(F, &*AF->arg_begin());
+#if LLVM_VERSION_MAJOR < 14
 	inlineAttribute = llvm::Attribute::get(Context,
 										   llvm::Attribute::AlwaysInline);
 	fwdcall->addAttribute(~0U, inlineAttribute);
+#else
+	fwdcall->addFnAttr(llvm::Attribute::AlwaysInline);
+#endif
 	Builder.CreateRet(fwdcall);
 
 	return AF;