| #[cfg(feature="master")] |
| use gccjit::{VarAttribute, FnAttribute}; |
| use rustc_codegen_ssa::traits::PreDefineMethods; |
| use rustc_hir::def_id::{DefId, LOCAL_CRATE}; |
| use rustc_middle::middle::codegen_fn_attrs::CodegenFnAttrFlags; |
| use rustc_middle::mir::mono::{Linkage, Visibility}; |
| use rustc_middle::ty::{self, Instance, TypeVisitableExt}; |
| use rustc_middle::ty::layout::{FnAbiOf, LayoutOf}; |
| |
| use crate::attributes; |
| use crate::base; |
| use crate::context::CodegenCx; |
| use crate::type_of::LayoutGccExt; |
| |
| impl<'gcc, 'tcx> PreDefineMethods<'tcx> for CodegenCx<'gcc, 'tcx> { |
| #[cfg_attr(not(feature="master"), allow(unused_variables))] |
| fn predefine_static(&self, def_id: DefId, _linkage: Linkage, visibility: Visibility, symbol_name: &str) { |
| let attrs = self.tcx.codegen_fn_attrs(def_id); |
| let instance = Instance::mono(self.tcx, def_id); |
| let ty = instance.ty(self.tcx, ty::ParamEnv::reveal_all()); |
| let gcc_type = self.layout_of(ty).gcc_type(self); |
| |
| let is_tls = attrs.flags.contains(CodegenFnAttrFlags::THREAD_LOCAL); |
| let global = self.define_global(symbol_name, gcc_type, is_tls, attrs.link_section); |
| #[cfg(feature="master")] |
| global.add_attribute(VarAttribute::Visibility(base::visibility_to_gcc(visibility))); |
| |
| // TODO(antoyo): set linkage. |
| self.instances.borrow_mut().insert(instance, global); |
| } |
| |
| #[cfg_attr(not(feature="master"), allow(unused_variables))] |
| fn predefine_fn(&self, instance: Instance<'tcx>, linkage: Linkage, visibility: Visibility, symbol_name: &str) { |
| assert!(!instance.args.has_infer()); |
| |
| let fn_abi = self.fn_abi_of_instance(instance, ty::List::empty()); |
| self.linkage.set(base::linkage_to_gcc(linkage)); |
| let decl = self.declare_fn(symbol_name, &fn_abi); |
| //let attrs = self.tcx.codegen_fn_attrs(instance.def_id()); |
| |
| attributes::from_fn_attrs(self, decl, instance); |
| |
| // If we're compiling the compiler-builtins crate, e.g., the equivalent of |
| // compiler-rt, then we want to implicitly compile everything with hidden |
| // visibility as we're going to link this object all over the place but |
| // don't want the symbols to get exported. |
| if linkage != Linkage::Internal |
| && linkage != Linkage::Private |
| && self.tcx.is_compiler_builtins(LOCAL_CRATE) |
| { |
| #[cfg(feature="master")] |
| decl.add_attribute(FnAttribute::Visibility(gccjit::Visibility::Hidden)); |
| } |
| else { |
| #[cfg(feature="master")] |
| decl.add_attribute(FnAttribute::Visibility(base::visibility_to_gcc(visibility))); |
| } |
| |
| // TODO(antoyo): call set_link_section() to allow initializing argc/argv. |
| // TODO(antoyo): set unique comdat. |
| // TODO(antoyo): use inline attribute from there in linkage.set() above. |
| |
| self.functions.borrow_mut().insert(symbol_name.to_string(), decl); |
| self.function_instances.borrow_mut().insert(instance, unsafe { std::mem::transmute(decl) }); |
| } |
| } |