3ccad75641
The crate map is no longer necessary now that logging and event loop factories have been moved out. Closes #11617 Closes #11731
269 lines
10 KiB
Rust
269 lines
10 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 driver::session::NoDebugInfo;
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use driver::session::Session;
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use lib::llvm::{ContextRef, ModuleRef, ValueRef};
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use lib::llvm::{llvm, TargetData, TypeNames};
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use lib::llvm::mk_target_data;
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use metadata::common::LinkMeta;
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use middle::astencode;
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use middle::resolve;
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use middle::trans::adt;
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use middle::trans::base;
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use middle::trans::builder::Builder;
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use middle::trans::common::{C_i32, C_null};
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use middle::trans::common::{mono_id,ExternMap,tydesc_info,BuilderRef_res,Stats};
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use middle::trans::debuginfo;
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use middle::trans::type_::Type;
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use middle::ty;
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use util::sha2::Sha256;
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use util::nodemap::{NodeMap, NodeSet, DefIdMap};
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use std::cell::{Cell, RefCell};
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use std::c_str::ToCStr;
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use std::libc::c_uint;
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use std::ptr;
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use collections::{HashMap, HashSet};
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use syntax::ast;
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use syntax::parse::token::InternedString;
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pub struct CrateContext {
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llmod: ModuleRef,
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llcx: ContextRef,
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metadata_llmod: ModuleRef,
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td: TargetData,
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tn: TypeNames,
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externs: RefCell<ExternMap>,
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intrinsics: HashMap<&'static str, ValueRef>,
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item_vals: RefCell<NodeMap<ValueRef>>,
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exp_map2: resolve::ExportMap2,
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reachable: NodeSet,
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item_symbols: RefCell<NodeMap<~str>>,
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link_meta: LinkMeta,
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drop_glues: RefCell<HashMap<ty::t, ValueRef>>,
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tydescs: RefCell<HashMap<ty::t, @tydesc_info>>,
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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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// A set of static items which cannot be inlined into other crates. This
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// will pevent in IIItem() structures from being encoded into the metadata
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// that is generated
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non_inlineable_statics: RefCell<NodeSet>,
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// Cache instances of monomorphized functions
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monomorphized: RefCell<HashMap<mono_id, ValueRef>>,
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monomorphizing: RefCell<DefIdMap<uint>>,
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// Cache generated vtables
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vtables: RefCell<HashMap<(ty::t, mono_id), ValueRef>>,
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// Cache of constant strings,
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const_cstr_cache: RefCell<HashMap<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<HashMap<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 external const values
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extern_const_values: RefCell<DefIdMap<ValueRef>>,
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impl_method_cache: RefCell<HashMap<(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<HashMap<ValueRef, ValueRef>>,
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lltypes: RefCell<HashMap<ty::t, Type>>,
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llsizingtypes: RefCell<HashMap<ty::t, Type>>,
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adt_reprs: RefCell<HashMap<ty::t, @adt::Repr>>,
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symbol_hasher: RefCell<Sha256>,
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type_hashcodes: RefCell<HashMap<ty::t, ~str>>,
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all_llvm_symbols: RefCell<HashSet<~str>>,
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tcx: ty::ctxt,
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maps: astencode::Maps,
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stats: @Stats,
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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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// Set when at least one function uses GC. Needed so that
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// decl_gc_metadata knows whether to link to the module metadata, which
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// is not emitted by LLVM's GC pass when no functions use GC.
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uses_gc: bool,
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dbg_cx: Option<debuginfo::CrateDebugContext>,
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}
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impl CrateContext {
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pub fn new(name: &str,
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tcx: ty::ctxt,
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emap2: resolve::ExportMap2,
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maps: astencode::Maps,
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symbol_hasher: Sha256,
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link_meta: LinkMeta,
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reachable: NodeSet)
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-> CrateContext {
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unsafe {
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let llcx = llvm::LLVMContextCreate();
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let llmod = name.with_c_str(|buf| {
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llvm::LLVMModuleCreateWithNameInContext(buf, llcx)
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});
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let metadata_llmod = format!("{}_metadata", name).with_c_str(|buf| {
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llvm::LLVMModuleCreateWithNameInContext(buf, llcx)
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});
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tcx.sess.targ_cfg.target_strs.data_layout.with_c_str(|buf| {
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llvm::LLVMSetDataLayout(llmod, buf);
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llvm::LLVMSetDataLayout(metadata_llmod, buf);
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});
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tcx.sess.targ_cfg.target_strs.target_triple.with_c_str(|buf| {
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llvm::LLVMRustSetNormalizedTarget(llmod, buf);
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llvm::LLVMRustSetNormalizedTarget(metadata_llmod, buf);
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});
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let td = mk_target_data(tcx.sess.targ_cfg.target_strs.data_layout);
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let dbg_cx = if 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 ccx = CrateContext {
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llmod: llmod,
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llcx: llcx,
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metadata_llmod: metadata_llmod,
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td: td,
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tn: TypeNames::new(),
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externs: RefCell::new(HashMap::new()),
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intrinsics: HashMap::new(),
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item_vals: RefCell::new(NodeMap::new()),
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exp_map2: emap2,
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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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drop_glues: RefCell::new(HashMap::new()),
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tydescs: RefCell::new(HashMap::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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non_inlineable_statics: RefCell::new(NodeSet::new()),
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monomorphized: RefCell::new(HashMap::new()),
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monomorphizing: RefCell::new(DefIdMap::new()),
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vtables: RefCell::new(HashMap::new()),
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const_cstr_cache: RefCell::new(HashMap::new()),
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const_globals: RefCell::new(HashMap::new()),
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const_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(HashMap::new()),
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closure_bare_wrapper_cache: RefCell::new(HashMap::new()),
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lltypes: RefCell::new(HashMap::new()),
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llsizingtypes: RefCell::new(HashMap::new()),
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adt_reprs: RefCell::new(HashMap::new()),
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symbol_hasher: RefCell::new(symbol_hasher),
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type_hashcodes: RefCell::new(HashMap::new()),
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all_llvm_symbols: RefCell::new(HashSet::new()),
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tcx: tcx,
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maps: maps,
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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(HashMap::new()),
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fn_stats: RefCell::new(Vec::new()),
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},
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int_type: Type::from_ref(ptr::null()),
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opaque_vec_type: Type::from_ref(ptr::null()),
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builder: BuilderRef_res(llvm::LLVMCreateBuilderInContext(llcx)),
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uses_gc: false,
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dbg_cx: dbg_cx,
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};
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ccx.int_type = Type::int(&ccx);
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ccx.opaque_vec_type = Type::opaque_vec(&ccx);
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ccx.tn.associate_type("tydesc", &Type::tydesc(&ccx));
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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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base::declare_intrinsics(&mut ccx);
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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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ccx
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}
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}
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pub fn tcx<'a>(&'a self) -> &'a ty::ctxt {
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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 builder<'a>(&'a self) -> Builder<'a> {
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Builder::new(self)
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}
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pub fn const_inbounds_gepi(&self,
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pointer: ValueRef,
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indices: &[uint]) -> ValueRef {
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debug!("const_inbounds_gepi: pointer={} indices={:?}",
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self.tn.val_to_str(pointer), indices);
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let v: Vec<ValueRef> =
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indices.iter().map(|i| C_i32(self, *i as i32)).collect();
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unsafe {
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llvm::LLVMConstInBoundsGEP(pointer,
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v.as_ptr(),
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indices.len() as c_uint)
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}
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}
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pub fn offsetof_gep(&self,
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llptr_ty: Type,
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indices: &[uint]) -> ValueRef {
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/*!
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* Returns the offset of applying the given GEP indices
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* to an instance of `llptr_ty`. Similar to `offsetof` in C,
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* except that `llptr_ty` must be a pointer type.
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*/
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unsafe {
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let null = C_null(llptr_ty);
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llvm::LLVMConstPtrToInt(self.const_inbounds_gepi(null, indices),
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self.int_type.to_ref())
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}
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}
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pub fn tydesc_type(&self) -> Type {
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self.tn.find_type("tydesc").unwrap()
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}
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}
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