add feature to support for LLVM 19

Cargo.toml

@@ -16,6 +16,7 @@ default = ["llvm18-0"]
 llvm16-0 = []
 llvm17-0 = []
 llvm18-0 = []
+llvm19-0 = []
 
 [dependencies]
 thiserror = "1.0.61"

build.rs

@@ -12,6 +12,8 @@ const LLVM_MAJOR_VERSION: usize = 16;
 const LLVM_MAJOR_VERSION: usize = 17;
 #[cfg(feature = "llvm18-0")]
 const LLVM_MAJOR_VERSION: usize = 18;
+#[cfg(feature = "llvm19-0")]
+const LLVM_MAJOR_VERSION: usize = 19;
 
 fn main() {
     if let Err(error) = run() {

src/record_keeper.rs

@@ -10,7 +10,7 @@
 
 use std::marker::PhantomData;
 
-#[cfg(feature = "llvm18-0")]
+#[cfg(any(feature = "llvm18-0", feature = "llvm19-0"))]
 use crate::error::TableGenError;
 #[cfg(any(feature = "llvm16-0", feature = "llvm17-0"))]
 use crate::error::{SourceLocation, TableGenError, WithLocation};