bjoernager/rust
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Auto merge of #97012 - oli-obk:🦀_intrinsics, r=davidtwco

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Add a query for checking whether a function is an intrinsic.

work towards #93145

This will reduce churn when we add more ways to declare intrinsics

r? `@scottmcm`
This commit is contained in:
bors 2022-05-17 09:39:26 +00:00
commit 735efc0c70
17 changed files with 52 additions and 45 deletions
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4
compiler/rustc_lint/src/builtin.rs
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@ -1252,7 +1252,6 @@ declare_lint_pass!(MutableTransmutes => [MUTABLE_TRANSMUTES]);
impl<'tcx> LateLintPass<'tcx> for MutableTransmutes {
fn check_expr(&mut self, cx: &LateContext<'_>, expr: &hir::Expr<'_>) {
use rustc_target::spec::abi::Abi::RustIntrinsic;
if let Some((&ty::Ref(_, _, from_mt), &ty::Ref(_, _, to_mt))) =
get_transmute_from_to(cx, expr).map(|(ty1, ty2)| (ty1.kind(), ty2.kind()))
{
@ -1287,8 +1286,7 @@ impl<'tcx> LateLintPass<'tcx> for MutableTransmutes {
}
fn def_id_is_transmute(cx: &LateContext<'_>, def_id: DefId) -> bool {
cx.tcx.fn_sig(def_id).abi() == RustIntrinsic
&& cx.tcx.item_name(def_id) == sym::transmute
cx.tcx.is_intrinsic(def_id) && cx.tcx.item_name(def_id) == sym::transmute
}
}
}