Make Builder generic

Co-authored-by: Oli Scherer <[email protected]>

compiler/rustc_codegen_llvm/src/builder.rs

@@ -37,29 +37,18 @@ use crate::type_::Type;
 use crate::type_of::LayoutLlvmExt;
 use crate::value::Value;
 
-// All Builders must have an llfn associated with them
-#[must_use]
-pub(crate) struct SBuilder<'a, 'll> {
-    pub llbuilder: &'ll mut llvm::Builder<'ll>,
-    pub cx: &'a SimpleCx<'ll>,
-}
 
-impl Drop for SBuilder<'_, '_> {
-    fn drop(&mut self) {
-        unsafe {
-            llvm::LLVMDisposeBuilder(&mut *(self.llbuilder as *mut _));
-        }
-    }
-}
+pub(crate) type SBuilder<'a, 'll> = GenericBuilder<'a, 'll, SimpleCx<'ll>>;
 
-// All Builders must have an llfn associated with them
 #[must_use]
-pub(crate) struct Builder<'a, 'll, 'tcx> {
+pub(crate) struct GenericBuilder<'a, 'll, CX> {
     pub llbuilder: &'ll mut llvm::Builder<'ll>,
-    pub cx: &'a CodegenCx<'ll, 'tcx>,
+    pub cx: &'a CX,
 }
 
-impl Drop for Builder<'_, '_, '_> {
+pub(crate) type Builder<'a, 'll, 'tcx> = GenericBuilder<'a, 'll, CodegenCx<'ll, 'tcx>>;
+
+impl<'a, 'll, CX> Drop for GenericBuilder<'a, 'll, CX> {
     fn drop(&mut self) {
         unsafe {
             llvm::LLVMDisposeBuilder(&mut *(self.llbuilder as *mut _));

compiler/rustc_codegen_llvm/src/intrinsic.rs

@@ -1081,11 +1081,11 @@ fn codegen_emcc_try<'ll>(
 
 // Helper function to give a Block to a closure to codegen a shim function.
 // This is currently primarily used for the `try` intrinsic functions above.
-fn gen_fn<'ll, 'tcx>(
-    cx: &CodegenCx<'ll, 'tcx>,
+fn gen_fn<'a, 'll, 'tcx>(
+    cx: &'a CodegenCx<'ll, 'tcx>,
     name: &str,
     rust_fn_sig: ty::PolyFnSig<'tcx>,
-    codegen: &mut dyn FnMut(Builder<'_, 'll, 'tcx>),
+    codegen: &mut dyn FnMut(Builder<'a, 'll, 'tcx>),
 ) -> (&'ll Type, &'ll Value) {
     let fn_abi = cx.fn_abi_of_fn_ptr(rust_fn_sig, ty::List::empty());
     let llty = fn_abi.llvm_type(cx);
@@ -1104,9 +1104,9 @@ fn gen_fn<'ll, 'tcx>(
 // catch exceptions.
 //
 // This function is only generated once and is then cached.
-fn get_rust_try_fn<'ll, 'tcx>(
-    cx: &CodegenCx<'ll, 'tcx>,
-    codegen: &mut dyn FnMut(Builder<'_, 'll, 'tcx>),
+fn get_rust_try_fn<'a, 'll, 'tcx>(
+    cx: &'a CodegenCx<'ll, 'tcx>,
+    codegen: &mut dyn FnMut(Builder<'a, 'll, 'tcx>),
 ) -> (&'ll Type, &'ll Value) {
     if let Some(llfn) = cx.rust_try_fn.get() {
         return llfn;