913 lines
32 KiB
Rust
913 lines
32 KiB
Rust
// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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use llvm;
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use llvm::{ContextRef, ModuleRef, ValueRef, BuilderRef};
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use llvm::{TargetData};
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use llvm::mk_target_data;
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use metadata::common::LinkMeta;
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use middle::def::ExportMap;
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use middle::traits;
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use trans::adt;
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use trans::base;
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use trans::builder::Builder;
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use trans::common::{ExternMap,tydesc_info,BuilderRef_res};
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use trans::debuginfo;
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use trans::monomorphize::MonoId;
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use trans::type_::{Type, TypeNames};
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use middle::ty::{self, Ty};
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use session::config::NoDebugInfo;
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use session::Session;
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use util::ppaux::Repr;
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use util::sha2::Sha256;
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use util::nodemap::{NodeMap, NodeSet, DefIdMap, FnvHashMap, FnvHashSet};
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use std::cell::{Cell, RefCell};
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use std::c_str::ToCStr;
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use std::ptr;
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use std::rc::Rc;
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use syntax::ast;
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use syntax::parse::token::InternedString;
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pub struct Stats {
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pub n_static_tydescs: Cell<uint>,
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pub n_glues_created: Cell<uint>,
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pub n_null_glues: Cell<uint>,
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pub n_real_glues: Cell<uint>,
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pub n_fns: Cell<uint>,
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pub n_monos: Cell<uint>,
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pub n_inlines: Cell<uint>,
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pub n_closures: Cell<uint>,
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pub n_llvm_insns: Cell<uint>,
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pub llvm_insns: RefCell<FnvHashMap<String, uint>>,
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// (ident, llvm-instructions)
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pub fn_stats: RefCell<Vec<(String, uint)> >,
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}
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/// The shared portion of a `CrateContext`. There is one `SharedCrateContext`
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/// per crate. The data here is shared between all compilation units of the
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/// crate, so it must not contain references to any LLVM data structures
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/// (aside from metadata-related ones).
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pub struct SharedCrateContext<'tcx> {
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local_ccxs: Vec<LocalCrateContext<'tcx>>,
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metadata_llmod: ModuleRef,
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metadata_llcx: ContextRef,
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export_map: ExportMap,
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reachable: NodeSet,
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item_symbols: RefCell<NodeMap<String>>,
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link_meta: LinkMeta,
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symbol_hasher: RefCell<Sha256>,
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tcx: ty::ctxt<'tcx>,
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stats: Stats,
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available_monomorphizations: RefCell<FnvHashSet<String>>,
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available_drop_glues: RefCell<FnvHashMap<Ty<'tcx>, String>>,
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}
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/// The local portion of a `CrateContext`. There is one `LocalCrateContext`
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/// per compilation unit. Each one has its own LLVM `ContextRef` so that
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/// several compilation units may be optimized in parallel. All other LLVM
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/// data structures in the `LocalCrateContext` are tied to that `ContextRef`.
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pub struct LocalCrateContext<'tcx> {
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llmod: ModuleRef,
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llcx: ContextRef,
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td: TargetData,
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tn: TypeNames,
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externs: RefCell<ExternMap>,
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item_vals: RefCell<NodeMap<ValueRef>>,
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needs_unwind_cleanup_cache: RefCell<FnvHashMap<Ty<'tcx>, bool>>,
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fn_pointer_shims: RefCell<FnvHashMap<Ty<'tcx>, ValueRef>>,
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drop_glues: RefCell<FnvHashMap<Ty<'tcx>, ValueRef>>,
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tydescs: RefCell<FnvHashMap<Ty<'tcx>, Rc<tydesc_info<'tcx>>>>,
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/// Set when running emit_tydescs to enforce that no more tydescs are
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/// created.
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finished_tydescs: Cell<bool>,
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/// Track mapping of external ids to local items imported for inlining
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external: RefCell<DefIdMap<Option<ast::NodeId>>>,
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/// Backwards version of the `external` map (inlined items to where they
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/// came from)
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external_srcs: RefCell<NodeMap<ast::DefId>>,
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/// Cache instances of monomorphized functions
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monomorphized: RefCell<FnvHashMap<MonoId<'tcx>, ValueRef>>,
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monomorphizing: RefCell<DefIdMap<uint>>,
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/// Cache generated vtables
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vtables: RefCell<FnvHashMap<(Ty<'tcx>, ty::PolyTraitRef<'tcx>), ValueRef>>,
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/// Cache of constant strings,
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const_cstr_cache: RefCell<FnvHashMap<InternedString, ValueRef>>,
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/// Reverse-direction for const ptrs cast from globals.
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/// Key is an int, cast from a ValueRef holding a *T,
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/// Val is a ValueRef holding a *[T].
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///
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/// Needed because LLVM loses pointer->pointee association
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/// when we ptrcast, and we have to ptrcast during translation
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/// of a [T] const because we form a slice, a [*T,int] pair, not
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/// a pointer to an LLVM array type.
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const_globals: RefCell<FnvHashMap<int, ValueRef>>,
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/// Cache of emitted const values
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const_values: RefCell<NodeMap<ValueRef>>,
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/// Cache of emitted static values
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static_values: RefCell<NodeMap<ValueRef>>,
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/// Cache of external const values
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extern_const_values: RefCell<DefIdMap<ValueRef>>,
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impl_method_cache: RefCell<FnvHashMap<(ast::DefId, ast::Name), ast::DefId>>,
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/// Cache of closure wrappers for bare fn's.
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closure_bare_wrapper_cache: RefCell<FnvHashMap<ValueRef, ValueRef>>,
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lltypes: RefCell<FnvHashMap<Ty<'tcx>, Type>>,
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llsizingtypes: RefCell<FnvHashMap<Ty<'tcx>, Type>>,
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adt_reprs: RefCell<FnvHashMap<Ty<'tcx>, Rc<adt::Repr<'tcx>>>>,
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type_hashcodes: RefCell<FnvHashMap<Ty<'tcx>, String>>,
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all_llvm_symbols: RefCell<FnvHashSet<String>>,
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int_type: Type,
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opaque_vec_type: Type,
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builder: BuilderRef_res,
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/// Holds the LLVM values for closure IDs.
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unboxed_closure_vals: RefCell<FnvHashMap<MonoId<'tcx>, ValueRef>>,
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dbg_cx: Option<debuginfo::CrateDebugContext<'tcx>>,
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eh_personality: RefCell<Option<ValueRef>>,
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intrinsics: RefCell<FnvHashMap<&'static str, ValueRef>>,
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/// Number of LLVM instructions translated into this `LocalCrateContext`.
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/// This is used to perform some basic load-balancing to keep all LLVM
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/// contexts around the same size.
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n_llvm_insns: Cell<uint>,
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trait_cache: RefCell<FnvHashMap<ty::PolyTraitRef<'tcx>,
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traits::Vtable<'tcx, ()>>>,
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}
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pub struct CrateContext<'a, 'tcx: 'a> {
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shared: &'a SharedCrateContext<'tcx>,
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local: &'a LocalCrateContext<'tcx>,
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/// The index of `local` in `shared.local_ccxs`. This is used in
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/// `maybe_iter(true)` to identify the original `LocalCrateContext`.
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index: uint,
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}
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pub struct CrateContextIterator<'a, 'tcx: 'a> {
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shared: &'a SharedCrateContext<'tcx>,
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index: uint,
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}
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impl<'a, 'tcx> Iterator for CrateContextIterator<'a,'tcx> {
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type Item = CrateContext<'a, 'tcx>;
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fn next(&mut self) -> Option<CrateContext<'a, 'tcx>> {
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if self.index >= self.shared.local_ccxs.len() {
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return None;
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}
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let index = self.index;
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self.index += 1;
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Some(CrateContext {
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shared: self.shared,
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local: &self.shared.local_ccxs[index],
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index: index,
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})
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}
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}
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/// The iterator produced by `CrateContext::maybe_iter`.
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pub struct CrateContextMaybeIterator<'a, 'tcx: 'a> {
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shared: &'a SharedCrateContext<'tcx>,
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index: uint,
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single: bool,
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origin: uint,
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}
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impl<'a, 'tcx> Iterator for CrateContextMaybeIterator<'a, 'tcx> {
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type Item = (CrateContext<'a, 'tcx>, bool);
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fn next(&mut self) -> Option<(CrateContext<'a, 'tcx>, bool)> {
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if self.index >= self.shared.local_ccxs.len() {
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return None;
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}
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let index = self.index;
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self.index += 1;
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if self.single {
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self.index = self.shared.local_ccxs.len();
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}
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let ccx = CrateContext {
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shared: self.shared,
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local: &self.shared.local_ccxs[index],
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index: index,
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};
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Some((ccx, index == self.origin))
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}
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}
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unsafe fn create_context_and_module(sess: &Session, mod_name: &str) -> (ContextRef, ModuleRef) {
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let llcx = llvm::LLVMContextCreate();
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let llmod = mod_name.with_c_str(|buf| {
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llvm::LLVMModuleCreateWithNameInContext(buf, llcx)
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});
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sess.target
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.target
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.data_layout
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.with_c_str(|buf| {
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llvm::LLVMSetDataLayout(llmod, buf);
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});
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sess.target
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.target
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.llvm_target
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.with_c_str(|buf| {
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llvm::LLVMRustSetNormalizedTarget(llmod, buf);
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});
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(llcx, llmod)
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}
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impl<'tcx> SharedCrateContext<'tcx> {
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pub fn new(crate_name: &str,
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local_count: uint,
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tcx: ty::ctxt<'tcx>,
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export_map: ExportMap,
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symbol_hasher: Sha256,
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link_meta: LinkMeta,
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reachable: NodeSet)
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-> SharedCrateContext<'tcx> {
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let (metadata_llcx, metadata_llmod) = unsafe {
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create_context_and_module(&tcx.sess, "metadata")
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};
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let mut shared_ccx = SharedCrateContext {
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local_ccxs: Vec::with_capacity(local_count),
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metadata_llmod: metadata_llmod,
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metadata_llcx: metadata_llcx,
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export_map: export_map,
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reachable: reachable,
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item_symbols: RefCell::new(NodeMap::new()),
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link_meta: link_meta,
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symbol_hasher: RefCell::new(symbol_hasher),
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tcx: tcx,
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stats: Stats {
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n_static_tydescs: Cell::new(0u),
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n_glues_created: Cell::new(0u),
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n_null_glues: Cell::new(0u),
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n_real_glues: Cell::new(0u),
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n_fns: Cell::new(0u),
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n_monos: Cell::new(0u),
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n_inlines: Cell::new(0u),
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n_closures: Cell::new(0u),
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n_llvm_insns: Cell::new(0u),
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llvm_insns: RefCell::new(FnvHashMap::new()),
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fn_stats: RefCell::new(Vec::new()),
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},
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available_monomorphizations: RefCell::new(FnvHashSet::new()),
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available_drop_glues: RefCell::new(FnvHashMap::new()),
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};
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for i in range(0, local_count) {
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// Append ".rs" to crate name as LLVM module identifier.
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//
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// LLVM code generator emits a ".file filename" directive
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// for ELF backends. Value of the "filename" is set as the
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// LLVM module identifier. Due to a LLVM MC bug[1], LLVM
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// crashes if the module identifier is same as other symbols
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// such as a function name in the module.
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// 1. http://llvm.org/bugs/show_bug.cgi?id=11479
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let llmod_id = format!("{}.{}.rs", crate_name, i);
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let local_ccx = LocalCrateContext::new(&shared_ccx, llmod_id[]);
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shared_ccx.local_ccxs.push(local_ccx);
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}
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shared_ccx
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}
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pub fn iter<'a>(&'a self) -> CrateContextIterator<'a, 'tcx> {
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CrateContextIterator {
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shared: self,
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index: 0,
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}
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}
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pub fn get_ccx<'a>(&'a self, index: uint) -> CrateContext<'a, 'tcx> {
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CrateContext {
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shared: self,
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local: &self.local_ccxs[index],
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index: index,
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}
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}
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fn get_smallest_ccx<'a>(&'a self) -> CrateContext<'a, 'tcx> {
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let (local_ccx, index) =
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self.local_ccxs
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.iter()
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.zip(range(0, self.local_ccxs.len()))
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.min_by(|&(local_ccx, _idx)| local_ccx.n_llvm_insns.get())
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.unwrap();
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CrateContext {
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shared: self,
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local: local_ccx,
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index: index,
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}
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}
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pub fn metadata_llmod(&self) -> ModuleRef {
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self.metadata_llmod
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}
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pub fn metadata_llcx(&self) -> ContextRef {
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self.metadata_llcx
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}
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pub fn export_map<'a>(&'a self) -> &'a ExportMap {
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&self.export_map
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}
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pub fn reachable<'a>(&'a self) -> &'a NodeSet {
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&self.reachable
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}
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pub fn item_symbols<'a>(&'a self) -> &'a RefCell<NodeMap<String>> {
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&self.item_symbols
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}
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pub fn link_meta<'a>(&'a self) -> &'a LinkMeta {
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&self.link_meta
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}
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pub fn tcx<'a>(&'a self) -> &'a ty::ctxt<'tcx> {
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&self.tcx
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}
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pub fn take_tcx(self) -> ty::ctxt<'tcx> {
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self.tcx
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}
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pub fn sess<'a>(&'a self) -> &'a Session {
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&self.tcx.sess
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}
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pub fn stats<'a>(&'a self) -> &'a Stats {
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&self.stats
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}
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}
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impl<'tcx> LocalCrateContext<'tcx> {
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fn new(shared: &SharedCrateContext<'tcx>,
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name: &str)
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-> LocalCrateContext<'tcx> {
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unsafe {
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let (llcx, llmod) = create_context_and_module(&shared.tcx.sess, name);
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let td = mk_target_data(shared.tcx
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.sess
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.target
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.target
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.data_layout
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[]);
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let dbg_cx = if shared.tcx.sess.opts.debuginfo != NoDebugInfo {
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Some(debuginfo::CrateDebugContext::new(llmod))
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} else {
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None
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};
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let mut local_ccx = LocalCrateContext {
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llmod: llmod,
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llcx: llcx,
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td: td,
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tn: TypeNames::new(),
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externs: RefCell::new(FnvHashMap::new()),
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item_vals: RefCell::new(NodeMap::new()),
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needs_unwind_cleanup_cache: RefCell::new(FnvHashMap::new()),
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fn_pointer_shims: RefCell::new(FnvHashMap::new()),
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drop_glues: RefCell::new(FnvHashMap::new()),
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tydescs: RefCell::new(FnvHashMap::new()),
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finished_tydescs: Cell::new(false),
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external: RefCell::new(DefIdMap::new()),
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external_srcs: RefCell::new(NodeMap::new()),
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monomorphized: RefCell::new(FnvHashMap::new()),
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monomorphizing: RefCell::new(DefIdMap::new()),
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vtables: RefCell::new(FnvHashMap::new()),
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const_cstr_cache: RefCell::new(FnvHashMap::new()),
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const_globals: RefCell::new(FnvHashMap::new()),
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const_values: RefCell::new(NodeMap::new()),
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static_values: RefCell::new(NodeMap::new()),
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extern_const_values: RefCell::new(DefIdMap::new()),
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impl_method_cache: RefCell::new(FnvHashMap::new()),
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closure_bare_wrapper_cache: RefCell::new(FnvHashMap::new()),
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lltypes: RefCell::new(FnvHashMap::new()),
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llsizingtypes: RefCell::new(FnvHashMap::new()),
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adt_reprs: RefCell::new(FnvHashMap::new()),
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type_hashcodes: RefCell::new(FnvHashMap::new()),
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all_llvm_symbols: RefCell::new(FnvHashSet::new()),
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int_type: Type::from_ref(ptr::null_mut()),
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opaque_vec_type: Type::from_ref(ptr::null_mut()),
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builder: BuilderRef_res(llvm::LLVMCreateBuilderInContext(llcx)),
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unboxed_closure_vals: RefCell::new(FnvHashMap::new()),
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dbg_cx: dbg_cx,
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eh_personality: RefCell::new(None),
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intrinsics: RefCell::new(FnvHashMap::new()),
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n_llvm_insns: Cell::new(0u),
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trait_cache: RefCell::new(FnvHashMap::new()),
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};
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local_ccx.int_type = Type::int(&local_ccx.dummy_ccx(shared));
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local_ccx.opaque_vec_type = Type::opaque_vec(&local_ccx.dummy_ccx(shared));
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// Done mutating local_ccx directly. (The rest of the
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// initialization goes through RefCell.)
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{
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let ccx = local_ccx.dummy_ccx(shared);
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let mut str_slice_ty = Type::named_struct(&ccx, "str_slice");
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str_slice_ty.set_struct_body(&[Type::i8p(&ccx), ccx.int_type()], false);
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ccx.tn().associate_type("str_slice", &str_slice_ty);
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ccx.tn().associate_type("tydesc", &Type::tydesc(&ccx, str_slice_ty));
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if ccx.sess().count_llvm_insns() {
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base::init_insn_ctxt()
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}
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}
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local_ccx
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}
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}
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/// Create a dummy `CrateContext` from `self` and the provided
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/// `SharedCrateContext`. This is somewhat dangerous because `self` may
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/// not actually be an element of `shared.local_ccxs`, which can cause some
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/// operations to panic unexpectedly.
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///
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/// This is used in the `LocalCrateContext` constructor to allow calling
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/// functions that expect a complete `CrateContext`, even before the local
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/// portion is fully initialized and attached to the `SharedCrateContext`.
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fn dummy_ccx<'a>(&'a self, shared: &'a SharedCrateContext<'tcx>)
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-> CrateContext<'a, 'tcx> {
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CrateContext {
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shared: shared,
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local: self,
|
|
index: -1 as uint,
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<'b, 'tcx> CrateContext<'b, 'tcx> {
|
|
pub fn shared(&self) -> &'b SharedCrateContext<'tcx> {
|
|
self.shared
|
|
}
|
|
|
|
pub fn local(&self) -> &'b LocalCrateContext<'tcx> {
|
|
self.local
|
|
}
|
|
|
|
|
|
/// Get a (possibly) different `CrateContext` from the same
|
|
/// `SharedCrateContext`.
|
|
pub fn rotate(&self) -> CrateContext<'b, 'tcx> {
|
|
self.shared.get_smallest_ccx()
|
|
}
|
|
|
|
/// Either iterate over only `self`, or iterate over all `CrateContext`s in
|
|
/// the `SharedCrateContext`. The iterator produces `(ccx, is_origin)`
|
|
/// pairs, where `is_origin` is `true` if `ccx` is `self` and `false`
|
|
/// otherwise. This method is useful for avoiding code duplication in
|
|
/// cases where it may or may not be necessary to translate code into every
|
|
/// context.
|
|
pub fn maybe_iter(&self, iter_all: bool) -> CrateContextMaybeIterator<'b, 'tcx> {
|
|
CrateContextMaybeIterator {
|
|
shared: self.shared,
|
|
index: if iter_all { 0 } else { self.index },
|
|
single: !iter_all,
|
|
origin: self.index,
|
|
}
|
|
}
|
|
|
|
|
|
pub fn tcx<'a>(&'a self) -> &'a ty::ctxt<'tcx> {
|
|
&self.shared.tcx
|
|
}
|
|
|
|
pub fn sess<'a>(&'a self) -> &'a Session {
|
|
&self.shared.tcx.sess
|
|
}
|
|
|
|
pub fn builder<'a>(&'a self) -> Builder<'a, 'tcx> {
|
|
Builder::new(self)
|
|
}
|
|
|
|
pub fn raw_builder<'a>(&'a self) -> BuilderRef {
|
|
self.local.builder.b
|
|
}
|
|
|
|
pub fn tydesc_type(&self) -> Type {
|
|
self.local.tn.find_type("tydesc").unwrap()
|
|
}
|
|
|
|
pub fn get_intrinsic(&self, key: & &'static str) -> ValueRef {
|
|
if let Some(v) = self.intrinsics().borrow().get(key).cloned() {
|
|
return v;
|
|
}
|
|
match declare_intrinsic(self, key) {
|
|
Some(v) => return v,
|
|
None => panic!()
|
|
}
|
|
}
|
|
|
|
pub fn is_split_stack_supported(&self) -> bool {
|
|
self.sess().target.target.options.morestack
|
|
}
|
|
|
|
|
|
pub fn llmod(&self) -> ModuleRef {
|
|
self.local.llmod
|
|
}
|
|
|
|
pub fn llcx(&self) -> ContextRef {
|
|
self.local.llcx
|
|
}
|
|
|
|
pub fn td<'a>(&'a self) -> &'a TargetData {
|
|
&self.local.td
|
|
}
|
|
|
|
pub fn tn<'a>(&'a self) -> &'a TypeNames {
|
|
&self.local.tn
|
|
}
|
|
|
|
pub fn externs<'a>(&'a self) -> &'a RefCell<ExternMap> {
|
|
&self.local.externs
|
|
}
|
|
|
|
pub fn item_vals<'a>(&'a self) -> &'a RefCell<NodeMap<ValueRef>> {
|
|
&self.local.item_vals
|
|
}
|
|
|
|
pub fn export_map<'a>(&'a self) -> &'a ExportMap {
|
|
&self.shared.export_map
|
|
}
|
|
|
|
pub fn reachable<'a>(&'a self) -> &'a NodeSet {
|
|
&self.shared.reachable
|
|
}
|
|
|
|
pub fn item_symbols<'a>(&'a self) -> &'a RefCell<NodeMap<String>> {
|
|
&self.shared.item_symbols
|
|
}
|
|
|
|
pub fn link_meta<'a>(&'a self) -> &'a LinkMeta {
|
|
&self.shared.link_meta
|
|
}
|
|
|
|
pub fn needs_unwind_cleanup_cache(&self) -> &RefCell<FnvHashMap<Ty<'tcx>, bool>> {
|
|
&self.local.needs_unwind_cleanup_cache
|
|
}
|
|
|
|
pub fn fn_pointer_shims(&self) -> &RefCell<FnvHashMap<Ty<'tcx>, ValueRef>> {
|
|
&self.local.fn_pointer_shims
|
|
}
|
|
|
|
pub fn drop_glues<'a>(&'a self) -> &'a RefCell<FnvHashMap<Ty<'tcx>, ValueRef>> {
|
|
&self.local.drop_glues
|
|
}
|
|
|
|
pub fn tydescs<'a>(&'a self) -> &'a RefCell<FnvHashMap<Ty<'tcx>, Rc<tydesc_info<'tcx>>>> {
|
|
&self.local.tydescs
|
|
}
|
|
|
|
pub fn finished_tydescs<'a>(&'a self) -> &'a Cell<bool> {
|
|
&self.local.finished_tydescs
|
|
}
|
|
|
|
pub fn external<'a>(&'a self) -> &'a RefCell<DefIdMap<Option<ast::NodeId>>> {
|
|
&self.local.external
|
|
}
|
|
|
|
pub fn external_srcs<'a>(&'a self) -> &'a RefCell<NodeMap<ast::DefId>> {
|
|
&self.local.external_srcs
|
|
}
|
|
|
|
pub fn monomorphized<'a>(&'a self) -> &'a RefCell<FnvHashMap<MonoId<'tcx>, ValueRef>> {
|
|
&self.local.monomorphized
|
|
}
|
|
|
|
pub fn monomorphizing<'a>(&'a self) -> &'a RefCell<DefIdMap<uint>> {
|
|
&self.local.monomorphizing
|
|
}
|
|
|
|
pub fn vtables<'a>(&'a self) -> &'a RefCell<FnvHashMap<(Ty<'tcx>, ty::PolyTraitRef<'tcx>),
|
|
ValueRef>> {
|
|
&self.local.vtables
|
|
}
|
|
|
|
pub fn const_cstr_cache<'a>(&'a self) -> &'a RefCell<FnvHashMap<InternedString, ValueRef>> {
|
|
&self.local.const_cstr_cache
|
|
}
|
|
|
|
pub fn const_globals<'a>(&'a self) -> &'a RefCell<FnvHashMap<int, ValueRef>> {
|
|
&self.local.const_globals
|
|
}
|
|
|
|
pub fn const_values<'a>(&'a self) -> &'a RefCell<NodeMap<ValueRef>> {
|
|
&self.local.const_values
|
|
}
|
|
|
|
pub fn static_values<'a>(&'a self) -> &'a RefCell<NodeMap<ValueRef>> {
|
|
&self.local.static_values
|
|
}
|
|
|
|
pub fn extern_const_values<'a>(&'a self) -> &'a RefCell<DefIdMap<ValueRef>> {
|
|
&self.local.extern_const_values
|
|
}
|
|
|
|
pub fn impl_method_cache<'a>(&'a self)
|
|
-> &'a RefCell<FnvHashMap<(ast::DefId, ast::Name), ast::DefId>> {
|
|
&self.local.impl_method_cache
|
|
}
|
|
|
|
pub fn closure_bare_wrapper_cache<'a>(&'a self) -> &'a RefCell<FnvHashMap<ValueRef, ValueRef>> {
|
|
&self.local.closure_bare_wrapper_cache
|
|
}
|
|
|
|
pub fn lltypes<'a>(&'a self) -> &'a RefCell<FnvHashMap<Ty<'tcx>, Type>> {
|
|
&self.local.lltypes
|
|
}
|
|
|
|
pub fn llsizingtypes<'a>(&'a self) -> &'a RefCell<FnvHashMap<Ty<'tcx>, Type>> {
|
|
&self.local.llsizingtypes
|
|
}
|
|
|
|
pub fn adt_reprs<'a>(&'a self) -> &'a RefCell<FnvHashMap<Ty<'tcx>, Rc<adt::Repr<'tcx>>>> {
|
|
&self.local.adt_reprs
|
|
}
|
|
|
|
pub fn symbol_hasher<'a>(&'a self) -> &'a RefCell<Sha256> {
|
|
&self.shared.symbol_hasher
|
|
}
|
|
|
|
pub fn type_hashcodes<'a>(&'a self) -> &'a RefCell<FnvHashMap<Ty<'tcx>, String>> {
|
|
&self.local.type_hashcodes
|
|
}
|
|
|
|
pub fn all_llvm_symbols<'a>(&'a self) -> &'a RefCell<FnvHashSet<String>> {
|
|
&self.local.all_llvm_symbols
|
|
}
|
|
|
|
pub fn stats<'a>(&'a self) -> &'a Stats {
|
|
&self.shared.stats
|
|
}
|
|
|
|
pub fn available_monomorphizations<'a>(&'a self) -> &'a RefCell<FnvHashSet<String>> {
|
|
&self.shared.available_monomorphizations
|
|
}
|
|
|
|
pub fn available_drop_glues<'a>(&'a self) -> &'a RefCell<FnvHashMap<Ty<'tcx>, String>> {
|
|
&self.shared.available_drop_glues
|
|
}
|
|
|
|
pub fn int_type(&self) -> Type {
|
|
self.local.int_type
|
|
}
|
|
|
|
pub fn opaque_vec_type(&self) -> Type {
|
|
self.local.opaque_vec_type
|
|
}
|
|
|
|
pub fn unboxed_closure_vals<'a>(&'a self) -> &'a RefCell<FnvHashMap<MonoId<'tcx>,ValueRef>> {
|
|
&self.local.unboxed_closure_vals
|
|
}
|
|
|
|
pub fn dbg_cx<'a>(&'a self) -> &'a Option<debuginfo::CrateDebugContext<'tcx>> {
|
|
&self.local.dbg_cx
|
|
}
|
|
|
|
pub fn eh_personality<'a>(&'a self) -> &'a RefCell<Option<ValueRef>> {
|
|
&self.local.eh_personality
|
|
}
|
|
|
|
fn intrinsics<'a>(&'a self) -> &'a RefCell<FnvHashMap<&'static str, ValueRef>> {
|
|
&self.local.intrinsics
|
|
}
|
|
|
|
pub fn count_llvm_insn(&self) {
|
|
self.local.n_llvm_insns.set(self.local.n_llvm_insns.get() + 1);
|
|
}
|
|
|
|
pub fn trait_cache(&self) -> &RefCell<FnvHashMap<ty::PolyTraitRef<'tcx>,
|
|
traits::Vtable<'tcx, ()>>> {
|
|
&self.local.trait_cache
|
|
}
|
|
|
|
/// Return exclusive upper bound on object size.
|
|
///
|
|
/// The theoretical maximum object size is defined as the maximum positive `int` value. This
|
|
/// ensures that the `offset` semantics remain well-defined by allowing it to correctly index
|
|
/// every address within an object along with one byte past the end, along with allowing `int`
|
|
/// to store the difference between any two pointers into an object.
|
|
///
|
|
/// The upper bound on 64-bit currently needs to be lower because LLVM uses a 64-bit integer to
|
|
/// represent object size in bits. It would need to be 1 << 61 to account for this, but is
|
|
/// currently conservatively bounded to 1 << 47 as that is enough to cover the current usable
|
|
/// address space on 64-bit ARMv8 and x86_64.
|
|
pub fn obj_size_bound(&self) -> u64 {
|
|
match self.sess().target.target.target_word_size[] {
|
|
"32" => 1 << 31,
|
|
"64" => 1 << 47,
|
|
_ => unreachable!() // error handled by config::build_target_config
|
|
}
|
|
}
|
|
|
|
pub fn report_overbig_object(&self, obj: Ty<'tcx>) -> ! {
|
|
self.sess().fatal(
|
|
format!("the type `{}` is too big for the current architecture",
|
|
obj.repr(self.tcx()))[])
|
|
}
|
|
}
|
|
|
|
fn declare_intrinsic(ccx: &CrateContext, key: & &'static str) -> Option<ValueRef> {
|
|
macro_rules! ifn (
|
|
($name:expr fn() -> $ret:expr) => (
|
|
if *key == $name {
|
|
let f = base::decl_cdecl_fn(
|
|
ccx, $name, Type::func(&[], &$ret),
|
|
ty::mk_nil(ccx.tcx()));
|
|
ccx.intrinsics().borrow_mut().insert($name, f.clone());
|
|
return Some(f);
|
|
}
|
|
);
|
|
($name:expr fn($($arg:expr),*) -> $ret:expr) => (
|
|
if *key == $name {
|
|
let f = base::decl_cdecl_fn(ccx, $name,
|
|
Type::func(&[$($arg),*], &$ret), ty::mk_nil(ccx.tcx()));
|
|
ccx.intrinsics().borrow_mut().insert($name, f.clone());
|
|
return Some(f);
|
|
}
|
|
)
|
|
);
|
|
macro_rules! mk_struct (
|
|
($($field_ty:expr),*) => (Type::struct_(ccx, &[$($field_ty),*], false))
|
|
);
|
|
|
|
let i8p = Type::i8p(ccx);
|
|
let void = Type::void(ccx);
|
|
let i1 = Type::i1(ccx);
|
|
let t_i8 = Type::i8(ccx);
|
|
let t_i16 = Type::i16(ccx);
|
|
let t_i32 = Type::i32(ccx);
|
|
let t_i64 = Type::i64(ccx);
|
|
let t_f32 = Type::f32(ccx);
|
|
let t_f64 = Type::f64(ccx);
|
|
|
|
ifn!("llvm.memcpy.p0i8.p0i8.i32" fn(i8p, i8p, t_i32, t_i32, i1) -> void);
|
|
ifn!("llvm.memcpy.p0i8.p0i8.i64" fn(i8p, i8p, t_i64, t_i32, i1) -> void);
|
|
ifn!("llvm.memmove.p0i8.p0i8.i32" fn(i8p, i8p, t_i32, t_i32, i1) -> void);
|
|
ifn!("llvm.memmove.p0i8.p0i8.i64" fn(i8p, i8p, t_i64, t_i32, i1) -> void);
|
|
ifn!("llvm.memset.p0i8.i32" fn(i8p, t_i8, t_i32, t_i32, i1) -> void);
|
|
ifn!("llvm.memset.p0i8.i64" fn(i8p, t_i8, t_i64, t_i32, i1) -> void);
|
|
|
|
ifn!("llvm.trap" fn() -> void);
|
|
ifn!("llvm.debugtrap" fn() -> void);
|
|
ifn!("llvm.frameaddress" fn(t_i32) -> i8p);
|
|
|
|
ifn!("llvm.powi.f32" fn(t_f32, t_i32) -> t_f32);
|
|
ifn!("llvm.powi.f64" fn(t_f64, t_i32) -> t_f64);
|
|
ifn!("llvm.pow.f32" fn(t_f32, t_f32) -> t_f32);
|
|
ifn!("llvm.pow.f64" fn(t_f64, t_f64) -> t_f64);
|
|
|
|
ifn!("llvm.sqrt.f32" fn(t_f32) -> t_f32);
|
|
ifn!("llvm.sqrt.f64" fn(t_f64) -> t_f64);
|
|
ifn!("llvm.sin.f32" fn(t_f32) -> t_f32);
|
|
ifn!("llvm.sin.f64" fn(t_f64) -> t_f64);
|
|
ifn!("llvm.cos.f32" fn(t_f32) -> t_f32);
|
|
ifn!("llvm.cos.f64" fn(t_f64) -> t_f64);
|
|
ifn!("llvm.exp.f32" fn(t_f32) -> t_f32);
|
|
ifn!("llvm.exp.f64" fn(t_f64) -> t_f64);
|
|
ifn!("llvm.exp2.f32" fn(t_f32) -> t_f32);
|
|
ifn!("llvm.exp2.f64" fn(t_f64) -> t_f64);
|
|
ifn!("llvm.log.f32" fn(t_f32) -> t_f32);
|
|
ifn!("llvm.log.f64" fn(t_f64) -> t_f64);
|
|
ifn!("llvm.log10.f32" fn(t_f32) -> t_f32);
|
|
ifn!("llvm.log10.f64" fn(t_f64) -> t_f64);
|
|
ifn!("llvm.log2.f32" fn(t_f32) -> t_f32);
|
|
ifn!("llvm.log2.f64" fn(t_f64) -> t_f64);
|
|
|
|
ifn!("llvm.fma.f32" fn(t_f32, t_f32, t_f32) -> t_f32);
|
|
ifn!("llvm.fma.f64" fn(t_f64, t_f64, t_f64) -> t_f64);
|
|
|
|
ifn!("llvm.fabs.f32" fn(t_f32) -> t_f32);
|
|
ifn!("llvm.fabs.f64" fn(t_f64) -> t_f64);
|
|
|
|
ifn!("llvm.floor.f32" fn(t_f32) -> t_f32);
|
|
ifn!("llvm.floor.f64" fn(t_f64) -> t_f64);
|
|
ifn!("llvm.ceil.f32" fn(t_f32) -> t_f32);
|
|
ifn!("llvm.ceil.f64" fn(t_f64) -> t_f64);
|
|
ifn!("llvm.trunc.f32" fn(t_f32) -> t_f32);
|
|
ifn!("llvm.trunc.f64" fn(t_f64) -> t_f64);
|
|
|
|
ifn!("llvm.rint.f32" fn(t_f32) -> t_f32);
|
|
ifn!("llvm.rint.f64" fn(t_f64) -> t_f64);
|
|
ifn!("llvm.nearbyint.f32" fn(t_f32) -> t_f32);
|
|
ifn!("llvm.nearbyint.f64" fn(t_f64) -> t_f64);
|
|
|
|
ifn!("llvm.ctpop.i8" fn(t_i8) -> t_i8);
|
|
ifn!("llvm.ctpop.i16" fn(t_i16) -> t_i16);
|
|
ifn!("llvm.ctpop.i32" fn(t_i32) -> t_i32);
|
|
ifn!("llvm.ctpop.i64" fn(t_i64) -> t_i64);
|
|
|
|
ifn!("llvm.ctlz.i8" fn(t_i8 , i1) -> t_i8);
|
|
ifn!("llvm.ctlz.i16" fn(t_i16, i1) -> t_i16);
|
|
ifn!("llvm.ctlz.i32" fn(t_i32, i1) -> t_i32);
|
|
ifn!("llvm.ctlz.i64" fn(t_i64, i1) -> t_i64);
|
|
|
|
ifn!("llvm.cttz.i8" fn(t_i8 , i1) -> t_i8);
|
|
ifn!("llvm.cttz.i16" fn(t_i16, i1) -> t_i16);
|
|
ifn!("llvm.cttz.i32" fn(t_i32, i1) -> t_i32);
|
|
ifn!("llvm.cttz.i64" fn(t_i64, i1) -> t_i64);
|
|
|
|
ifn!("llvm.bswap.i16" fn(t_i16) -> t_i16);
|
|
ifn!("llvm.bswap.i32" fn(t_i32) -> t_i32);
|
|
ifn!("llvm.bswap.i64" fn(t_i64) -> t_i64);
|
|
|
|
ifn!("llvm.sadd.with.overflow.i8" fn(t_i8, t_i8) -> mk_struct!{t_i8, i1});
|
|
ifn!("llvm.sadd.with.overflow.i16" fn(t_i16, t_i16) -> mk_struct!{t_i16, i1});
|
|
ifn!("llvm.sadd.with.overflow.i32" fn(t_i32, t_i32) -> mk_struct!{t_i32, i1});
|
|
ifn!("llvm.sadd.with.overflow.i64" fn(t_i64, t_i64) -> mk_struct!{t_i64, i1});
|
|
|
|
ifn!("llvm.uadd.with.overflow.i8" fn(t_i8, t_i8) -> mk_struct!{t_i8, i1});
|
|
ifn!("llvm.uadd.with.overflow.i16" fn(t_i16, t_i16) -> mk_struct!{t_i16, i1});
|
|
ifn!("llvm.uadd.with.overflow.i32" fn(t_i32, t_i32) -> mk_struct!{t_i32, i1});
|
|
ifn!("llvm.uadd.with.overflow.i64" fn(t_i64, t_i64) -> mk_struct!{t_i64, i1});
|
|
|
|
ifn!("llvm.ssub.with.overflow.i8" fn(t_i8, t_i8) -> mk_struct!{t_i8, i1});
|
|
ifn!("llvm.ssub.with.overflow.i16" fn(t_i16, t_i16) -> mk_struct!{t_i16, i1});
|
|
ifn!("llvm.ssub.with.overflow.i32" fn(t_i32, t_i32) -> mk_struct!{t_i32, i1});
|
|
ifn!("llvm.ssub.with.overflow.i64" fn(t_i64, t_i64) -> mk_struct!{t_i64, i1});
|
|
|
|
ifn!("llvm.usub.with.overflow.i8" fn(t_i8, t_i8) -> mk_struct!{t_i8, i1});
|
|
ifn!("llvm.usub.with.overflow.i16" fn(t_i16, t_i16) -> mk_struct!{t_i16, i1});
|
|
ifn!("llvm.usub.with.overflow.i32" fn(t_i32, t_i32) -> mk_struct!{t_i32, i1});
|
|
ifn!("llvm.usub.with.overflow.i64" fn(t_i64, t_i64) -> mk_struct!{t_i64, i1});
|
|
|
|
ifn!("llvm.smul.with.overflow.i8" fn(t_i8, t_i8) -> mk_struct!{t_i8, i1});
|
|
ifn!("llvm.smul.with.overflow.i16" fn(t_i16, t_i16) -> mk_struct!{t_i16, i1});
|
|
ifn!("llvm.smul.with.overflow.i32" fn(t_i32, t_i32) -> mk_struct!{t_i32, i1});
|
|
ifn!("llvm.smul.with.overflow.i64" fn(t_i64, t_i64) -> mk_struct!{t_i64, i1});
|
|
|
|
ifn!("llvm.umul.with.overflow.i8" fn(t_i8, t_i8) -> mk_struct!{t_i8, i1});
|
|
ifn!("llvm.umul.with.overflow.i16" fn(t_i16, t_i16) -> mk_struct!{t_i16, i1});
|
|
ifn!("llvm.umul.with.overflow.i32" fn(t_i32, t_i32) -> mk_struct!{t_i32, i1});
|
|
ifn!("llvm.umul.with.overflow.i64" fn(t_i64, t_i64) -> mk_struct!{t_i64, i1});
|
|
|
|
ifn!("llvm.lifetime.start" fn(t_i64,i8p) -> void);
|
|
ifn!("llvm.lifetime.end" fn(t_i64, i8p) -> void);
|
|
|
|
ifn!("llvm.expect.i1" fn(i1, i1) -> i1);
|
|
ifn!("llvm.assume" fn(i1) -> void);
|
|
|
|
// Some intrinsics were introduced in later versions of LLVM, but they have
|
|
// fallbacks in libc or libm and such. Currently, all of these intrinsics
|
|
// were introduced in LLVM 3.4, so we case on that.
|
|
macro_rules! compatible_ifn (
|
|
($name:expr, $cname:ident ($($arg:expr),*) -> $ret:expr) => (
|
|
if unsafe { llvm::LLVMVersionMinor() >= 4 } {
|
|
// The `if key == $name` is already in ifn!
|
|
ifn!($name fn($($arg),*) -> $ret);
|
|
} else if *key == $name {
|
|
let f = base::decl_cdecl_fn(ccx, stringify!($cname),
|
|
Type::func(&[$($arg),*], &$ret),
|
|
ty::mk_nil(ccx.tcx()));
|
|
ccx.intrinsics().borrow_mut().insert($name, f.clone());
|
|
return Some(f);
|
|
}
|
|
)
|
|
);
|
|
|
|
compatible_ifn!("llvm.copysign.f32", copysignf(t_f32, t_f32) -> t_f32);
|
|
compatible_ifn!("llvm.copysign.f64", copysign(t_f64, t_f64) -> t_f64);
|
|
compatible_ifn!("llvm.round.f32", roundf(t_f32) -> t_f32);
|
|
compatible_ifn!("llvm.round.f64", round(t_f64) -> t_f64);
|
|
|
|
|
|
if ccx.sess().opts.debuginfo != NoDebugInfo {
|
|
ifn!("llvm.dbg.declare" fn(Type::metadata(ccx), Type::metadata(ccx)) -> void);
|
|
ifn!("llvm.dbg.value" fn(Type::metadata(ccx), t_i64, Type::metadata(ccx)) -> void);
|
|
}
|
|
return None;
|
|
}
|