use rustc_errors::struct_span_err;
use rustc_hir as hir;
-use rustc_hir::def_id::DefId;
use rustc_hir::LangItem;
use rustc_middle::mir::interpret::ConstValue;
use rustc_middle::ty::{self, layout::TyAndLayout, Ty, TyCtxt};
use rustc_span::Span;
use crate::base;
-use crate::traits::BuilderMethods;
use crate::traits::*;
pub enum IntPredicate {
}
}
-pub fn langcall(tcx: TyCtxt<'_>, span: Option<Span>, msg: &str, li: LangItem) -> DefId {
- tcx.lang_items().require(li).unwrap_or_else(|s| {
- let msg = format!("{} {}", msg, s);
- match span {
- Some(span) => tcx.sess.span_fatal(span, &msg),
- None => tcx.sess.fatal(&msg),
- }
- })
+pub fn build_langcall<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>>(
+ bx: &Bx,
+ span: Option<Span>,
+ li: LangItem,
+) -> (Bx::FnAbiOfResult, Bx::Value) {
+ let tcx = bx.tcx();
+ let def_id = tcx.require_lang_item(li, span);
+ let instance = ty::Instance::mono(tcx, def_id);
+ (bx.fn_abi_of_instance(instance, ty::List::empty()), bx.get_fn_addr(instance))
}
// To avoid UB from LLVM, these two functions mask RHS with an