| // Utility Functions. |
| |
| use super::{CrateDebugContext}; |
| use super::namespace::item_namespace; |
| |
| use rustc::hir::def_id::DefId; |
| use rustc::ty::DefIdTree; |
| |
| use crate::llvm; |
| use crate::llvm::debuginfo::{DIScope, DIBuilder, DIDescriptor, DIArray}; |
| use crate::common::{CodegenCx}; |
| use rustc_codegen_ssa::traits::*; |
| |
| use syntax_pos::Span; |
| |
| pub fn is_node_local_to_unit(cx: &CodegenCx<'_, '_>, def_id: DefId) -> bool |
| { |
| // The is_local_to_unit flag indicates whether a function is local to the |
| // current compilation unit (i.e., if it is *static* in the C-sense). The |
| // *reachable* set should provide a good approximation of this, as it |
| // contains everything that might leak out of the current crate (by being |
| // externally visible or by being inlined into something externally |
| // visible). It might better to use the `exported_items` set from |
| // `driver::CrateAnalysis` in the future, but (atm) this set is not |
| // available in the codegen pass. |
| !cx.tcx.is_reachable_non_generic(def_id) |
| } |
| |
| #[allow(non_snake_case)] |
| pub fn create_DIArray( |
| builder: &DIBuilder<'ll>, |
| arr: &[Option<&'ll DIDescriptor>], |
| ) -> &'ll DIArray { |
| return unsafe { |
| llvm::LLVMRustDIBuilderGetOrCreateArray(builder, arr.as_ptr(), arr.len() as u32) |
| }; |
| } |
| |
| /// Returns syntax_pos::Loc corresponding to the beginning of the span |
| pub fn span_start(cx: &CodegenCx<'_, '_>, span: Span) -> syntax_pos::Loc { |
| cx.sess().source_map().lookup_char_pos(span.lo()) |
| } |
| |
| #[inline] |
| pub fn debug_context(cx: &'a CodegenCx<'ll, 'tcx>) -> &'a CrateDebugContext<'ll, 'tcx> { |
| cx.dbg_cx.as_ref().unwrap() |
| } |
| |
| #[inline] |
| #[allow(non_snake_case)] |
| pub fn DIB(cx: &'a CodegenCx<'ll, '_>) -> &'a DIBuilder<'ll> { |
| cx.dbg_cx.as_ref().unwrap().builder |
| } |
| |
| pub fn get_namespace_for_item(cx: &CodegenCx<'ll, '_>, def_id: DefId) -> &'ll DIScope { |
| item_namespace(cx, cx.tcx.parent(def_id) |
| .expect("get_namespace_for_item: missing parent?")) |
| } |