882 lines
37 KiB
Rust
882 lines
37 KiB
Rust
use crate::attributes;
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use crate::llvm;
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use crate::llvm_util;
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use crate::debuginfo;
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use crate::value::Value;
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use rustc::dep_graph::DepGraphSafe;
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use rustc::hir;
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use crate::type_::Type;
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use rustc_codegen_ssa::traits::*;
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use rustc_data_structures::base_n;
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use rustc_data_structures::small_c_str::SmallCStr;
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use rustc::mir::mono::CodegenUnit;
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use rustc::session::config::{self, DebugInfo};
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use rustc::session::Session;
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use rustc::ty::layout::{
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LayoutError, LayoutOf, PointeeInfo, Size, TyLayout, VariantIdx, HasParamEnv
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};
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use rustc::ty::{self, Ty, TyCtxt, Instance};
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use rustc::util::nodemap::FxHashMap;
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use rustc_target::spec::{HasTargetSpec, Target};
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use rustc_codegen_ssa::callee::resolve_and_get_fn;
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use rustc_codegen_ssa::base::wants_msvc_seh;
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use crate::callee::get_fn;
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use std::ffi::CStr;
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use std::cell::{Cell, RefCell};
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use std::iter;
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use std::str;
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use std::sync::Arc;
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use syntax::symbol::LocalInternedString;
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use syntax::source_map::{DUMMY_SP, Span};
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use crate::abi::Abi;
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/// There is one `CodegenCx` per compilation unit. Each one has its own LLVM
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/// `llvm::Context` so that several compilation units may be optimized in parallel.
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/// All other LLVM data structures in the `CodegenCx` are tied to that `llvm::Context`.
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pub struct CodegenCx<'ll, 'tcx> {
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pub tcx: TyCtxt<'tcx>,
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pub check_overflow: bool,
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pub use_dll_storage_attrs: bool,
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pub tls_model: llvm::ThreadLocalMode,
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pub llmod: &'ll llvm::Module,
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pub llcx: &'ll llvm::Context,
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pub codegen_unit: Arc<CodegenUnit<'tcx>>,
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/// Cache instances of monomorphic and polymorphic items
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pub instances: RefCell<FxHashMap<Instance<'tcx>, &'ll Value>>,
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/// Cache generated vtables
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pub vtables:
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RefCell<FxHashMap<(Ty<'tcx>, Option<ty::PolyExistentialTraitRef<'tcx>>), &'ll Value>>,
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/// Cache of constant strings,
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pub const_cstr_cache: RefCell<FxHashMap<LocalInternedString, &'ll Value>>,
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/// Reverse-direction for const ptrs cast from globals.
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/// Key is a Value holding a *T,
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/// Val is a Value 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 codegen
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/// of a [T] const because we form a slice, a (*T,usize) pair, not
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/// a pointer to an LLVM array type. Similar for trait objects.
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pub const_unsized: RefCell<FxHashMap<&'ll Value, &'ll Value>>,
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/// Cache of emitted const globals (value -> global)
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pub const_globals: RefCell<FxHashMap<&'ll Value, &'ll Value>>,
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/// List of globals for static variables which need to be passed to the
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/// LLVM function ReplaceAllUsesWith (RAUW) when codegen is complete.
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/// (We have to make sure we don't invalidate any Values referring
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/// to constants.)
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pub statics_to_rauw: RefCell<Vec<(&'ll Value, &'ll Value)>>,
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/// Statics that will be placed in the llvm.used variable
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/// See <http://llvm.org/docs/LangRef.html#the-llvm-used-global-variable> for details
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pub used_statics: RefCell<Vec<&'ll Value>>,
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pub lltypes: RefCell<FxHashMap<(Ty<'tcx>, Option<VariantIdx>), &'ll Type>>,
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pub scalar_lltypes: RefCell<FxHashMap<Ty<'tcx>, &'ll Type>>,
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pub pointee_infos: RefCell<FxHashMap<(Ty<'tcx>, Size), Option<PointeeInfo>>>,
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pub isize_ty: &'ll Type,
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pub dbg_cx: Option<debuginfo::CrateDebugContext<'ll, 'tcx>>,
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eh_personality: Cell<Option<&'ll Value>>,
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eh_unwind_resume: Cell<Option<&'ll Value>>,
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pub rust_try_fn: Cell<Option<&'ll Value>>,
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intrinsics: RefCell<FxHashMap<&'static str, &'ll Value>>,
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/// A counter that is used for generating local symbol names
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local_gen_sym_counter: Cell<usize>,
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}
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impl<'ll, 'tcx> DepGraphSafe for CodegenCx<'ll, 'tcx> {}
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pub fn get_reloc_model(sess: &Session) -> llvm::RelocMode {
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let reloc_model_arg = match sess.opts.cg.relocation_model {
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Some(ref s) => &s[..],
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None => &sess.target.target.options.relocation_model[..],
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};
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match crate::back::write::RELOC_MODEL_ARGS.iter().find(
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|&&arg| arg.0 == reloc_model_arg) {
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Some(x) => x.1,
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_ => {
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sess.err(&format!("{:?} is not a valid relocation mode",
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reloc_model_arg));
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sess.abort_if_errors();
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bug!();
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}
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}
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}
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fn get_tls_model(sess: &Session) -> llvm::ThreadLocalMode {
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let tls_model_arg = match sess.opts.debugging_opts.tls_model {
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Some(ref s) => &s[..],
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None => &sess.target.target.options.tls_model[..],
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};
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match crate::back::write::TLS_MODEL_ARGS.iter().find(
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|&&arg| arg.0 == tls_model_arg) {
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Some(x) => x.1,
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_ => {
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sess.err(&format!("{:?} is not a valid TLS model",
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tls_model_arg));
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sess.abort_if_errors();
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bug!();
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}
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}
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}
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fn is_any_library(sess: &Session) -> bool {
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sess.crate_types.borrow().iter().any(|ty| {
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*ty != config::CrateType::Executable
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})
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}
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pub fn is_pie_binary(sess: &Session) -> bool {
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!is_any_library(sess) && get_reloc_model(sess) == llvm::RelocMode::PIC
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}
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fn strip_function_ptr_alignment(data_layout: String) -> String {
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// FIXME: Make this more general.
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data_layout.replace("-Fi8-", "-")
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}
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pub unsafe fn create_module(
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tcx: TyCtxt<'_>,
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llcx: &'ll llvm::Context,
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mod_name: &str,
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) -> &'ll llvm::Module {
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let sess = tcx.sess;
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let mod_name = SmallCStr::new(mod_name);
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let llmod = llvm::LLVMModuleCreateWithNameInContext(mod_name.as_ptr(), llcx);
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let mut target_data_layout = sess.target.target.data_layout.clone();
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if llvm_util::get_major_version() < 9 {
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target_data_layout = strip_function_ptr_alignment(target_data_layout);
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}
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// Ensure the data-layout values hardcoded remain the defaults.
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if sess.target.target.options.is_builtin {
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let tm = crate::back::write::create_informational_target_machine(&tcx.sess, false);
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llvm::LLVMRustSetDataLayoutFromTargetMachine(llmod, tm);
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llvm::LLVMRustDisposeTargetMachine(tm);
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let llvm_data_layout = llvm::LLVMGetDataLayout(llmod);
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let llvm_data_layout = str::from_utf8(CStr::from_ptr(llvm_data_layout).to_bytes())
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.ok().expect("got a non-UTF8 data-layout from LLVM");
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// Unfortunately LLVM target specs change over time, and right now we
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// don't have proper support to work with any more than one
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// `data_layout` than the one that is in the rust-lang/rust repo. If
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// this compiler is configured against a custom LLVM, we may have a
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// differing data layout, even though we should update our own to use
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// that one.
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//
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// As an interim hack, if CFG_LLVM_ROOT is not an empty string then we
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// disable this check entirely as we may be configured with something
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// that has a different target layout.
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//
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// Unsure if this will actually cause breakage when rustc is configured
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// as such.
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//
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// FIXME(#34960)
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let cfg_llvm_root = option_env!("CFG_LLVM_ROOT").unwrap_or("");
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let custom_llvm_used = cfg_llvm_root.trim() != "";
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if !custom_llvm_used && target_data_layout != llvm_data_layout {
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bug!("data-layout for builtin `{}` target, `{}`, \
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differs from LLVM default, `{}`",
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sess.target.target.llvm_target,
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target_data_layout,
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llvm_data_layout);
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}
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}
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let data_layout = SmallCStr::new(&target_data_layout);
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llvm::LLVMSetDataLayout(llmod, data_layout.as_ptr());
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let llvm_target = SmallCStr::new(&sess.target.target.llvm_target);
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llvm::LLVMRustSetNormalizedTarget(llmod, llvm_target.as_ptr());
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if is_pie_binary(sess) {
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llvm::LLVMRustSetModulePIELevel(llmod);
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}
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// If skipping the PLT is enabled, we need to add some module metadata
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// to ensure intrinsic calls don't use it.
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if !sess.needs_plt() {
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let avoid_plt = "RtLibUseGOT\0".as_ptr() as *const _;
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llvm::LLVMRustAddModuleFlag(llmod, avoid_plt, 1);
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}
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llmod
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}
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impl<'ll, 'tcx> CodegenCx<'ll, 'tcx> {
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crate fn new(
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tcx: TyCtxt<'tcx>,
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codegen_unit: Arc<CodegenUnit<'tcx>>,
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llvm_module: &'ll crate::ModuleLlvm,
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) -> Self {
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// An interesting part of Windows which MSVC forces our hand on (and
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// apparently MinGW didn't) is the usage of `dllimport` and `dllexport`
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// attributes in LLVM IR as well as native dependencies (in C these
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// correspond to `__declspec(dllimport)`).
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//
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// Whenever a dynamic library is built by MSVC it must have its public
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// interface specified by functions tagged with `dllexport` or otherwise
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// they're not available to be linked against. This poses a few problems
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// for the compiler, some of which are somewhat fundamental, but we use
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// the `use_dll_storage_attrs` variable below to attach the `dllexport`
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// attribute to all LLVM functions that are exported e.g., they're
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// already tagged with external linkage). This is suboptimal for a few
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// reasons:
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//
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// * If an object file will never be included in a dynamic library,
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// there's no need to attach the dllexport attribute. Most object
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// files in Rust are not destined to become part of a dll as binaries
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// are statically linked by default.
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// * If the compiler is emitting both an rlib and a dylib, the same
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// source object file is currently used but with MSVC this may be less
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// feasible. The compiler may be able to get around this, but it may
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// involve some invasive changes to deal with this.
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//
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// The flipside of this situation is that whenever you link to a dll and
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// you import a function from it, the import should be tagged with
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// `dllimport`. At this time, however, the compiler does not emit
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// `dllimport` for any declarations other than constants (where it is
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// required), which is again suboptimal for even more reasons!
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//
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// * Calling a function imported from another dll without using
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// `dllimport` causes the linker/compiler to have extra overhead (one
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// `jmp` instruction on x86) when calling the function.
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// * The same object file may be used in different circumstances, so a
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// function may be imported from a dll if the object is linked into a
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// dll, but it may be just linked against if linked into an rlib.
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// * The compiler has no knowledge about whether native functions should
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// be tagged dllimport or not.
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//
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// For now the compiler takes the perf hit (I do not have any numbers to
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// this effect) by marking very little as `dllimport` and praying the
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// linker will take care of everything. Fixing this problem will likely
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// require adding a few attributes to Rust itself (feature gated at the
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// start) and then strongly recommending static linkage on MSVC!
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let use_dll_storage_attrs = tcx.sess.target.target.options.is_like_msvc;
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let check_overflow = tcx.sess.overflow_checks();
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let tls_model = get_tls_model(&tcx.sess);
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let (llcx, llmod) = (&*llvm_module.llcx, llvm_module.llmod());
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let dbg_cx = if tcx.sess.opts.debuginfo != DebugInfo::None {
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let dctx = debuginfo::CrateDebugContext::new(llmod);
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debuginfo::metadata::compile_unit_metadata(tcx,
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&codegen_unit.name().as_str(),
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&dctx);
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Some(dctx)
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} else {
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None
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};
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let isize_ty = Type::ix_llcx(llcx, tcx.data_layout.pointer_size.bits());
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CodegenCx {
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tcx,
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check_overflow,
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use_dll_storage_attrs,
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tls_model,
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llmod,
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llcx,
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codegen_unit,
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instances: Default::default(),
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vtables: Default::default(),
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const_cstr_cache: Default::default(),
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const_unsized: Default::default(),
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const_globals: Default::default(),
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statics_to_rauw: RefCell::new(Vec::new()),
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used_statics: RefCell::new(Vec::new()),
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lltypes: Default::default(),
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scalar_lltypes: Default::default(),
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pointee_infos: Default::default(),
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isize_ty,
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dbg_cx,
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eh_personality: Cell::new(None),
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eh_unwind_resume: Cell::new(None),
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rust_try_fn: Cell::new(None),
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intrinsics: Default::default(),
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local_gen_sym_counter: Cell::new(0),
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}
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}
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crate fn statics_to_rauw(&self) -> &RefCell<Vec<(&'ll Value, &'ll Value)>> {
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&self.statics_to_rauw
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}
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}
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impl MiscMethods<'tcx> for CodegenCx<'ll, 'tcx> {
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fn vtables(&self) -> &RefCell<FxHashMap<(Ty<'tcx>,
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Option<ty::PolyExistentialTraitRef<'tcx>>), &'ll Value>>
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{
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&self.vtables
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}
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fn instances(&self) -> &RefCell<FxHashMap<Instance<'tcx>, &'ll Value>> {
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&self.instances
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}
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fn get_fn(&self, instance: Instance<'tcx>) -> &'ll Value {
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get_fn(self, instance)
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}
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fn eh_personality(&self) -> &'ll Value {
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// The exception handling personality function.
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//
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// If our compilation unit has the `eh_personality` lang item somewhere
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// within it, then we just need to codegen that. Otherwise, we're
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// building an rlib which will depend on some upstream implementation of
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// this function, so we just codegen a generic reference to it. We don't
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// specify any of the types for the function, we just make it a symbol
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// that LLVM can later use.
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//
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// Note that MSVC is a little special here in that we don't use the
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// `eh_personality` lang item at all. Currently LLVM has support for
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// both Dwarf and SEH unwind mechanisms for MSVC targets and uses the
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// *name of the personality function* to decide what kind of unwind side
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// tables/landing pads to emit. It looks like Dwarf is used by default,
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// injecting a dependency on the `_Unwind_Resume` symbol for resuming
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// an "exception", but for MSVC we want to force SEH. This means that we
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// can't actually have the personality function be our standard
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// `rust_eh_personality` function, but rather we wired it up to the
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// CRT's custom personality function, which forces LLVM to consider
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// landing pads as "landing pads for SEH".
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if let Some(llpersonality) = self.eh_personality.get() {
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return llpersonality
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}
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let tcx = self.tcx;
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let llfn = match tcx.lang_items().eh_personality() {
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Some(def_id) if !wants_msvc_seh(self.sess()) => {
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resolve_and_get_fn(self, def_id, tcx.intern_substs(&[]))
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}
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_ => {
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let name = if wants_msvc_seh(self.sess()) {
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"__CxxFrameHandler3"
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} else {
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"rust_eh_personality"
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};
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let fty = self.type_variadic_func(&[], self.type_i32());
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self.declare_cfn(name, fty)
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}
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};
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attributes::apply_target_cpu_attr(self, llfn);
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self.eh_personality.set(Some(llfn));
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llfn
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}
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// Returns a Value of the "eh_unwind_resume" lang item if one is defined,
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// otherwise declares it as an external function.
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fn eh_unwind_resume(&self) -> &'ll Value {
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let unwresume = &self.eh_unwind_resume;
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if let Some(llfn) = unwresume.get() {
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return llfn;
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}
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let tcx = self.tcx;
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assert!(self.sess().target.target.options.custom_unwind_resume);
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if let Some(def_id) = tcx.lang_items().eh_unwind_resume() {
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let llfn = resolve_and_get_fn(self, def_id, tcx.intern_substs(&[]));
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unwresume.set(Some(llfn));
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return llfn;
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}
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let sig = ty::Binder::bind(tcx.mk_fn_sig(
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iter::once(tcx.mk_mut_ptr(tcx.types.u8)),
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tcx.types.never,
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false,
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hir::Unsafety::Unsafe,
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Abi::C
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));
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let llfn = self.declare_fn("rust_eh_unwind_resume", sig);
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attributes::apply_target_cpu_attr(self, llfn);
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unwresume.set(Some(llfn));
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llfn
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}
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fn sess(&self) -> &Session {
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&self.tcx.sess
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}
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fn check_overflow(&self) -> bool {
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self.check_overflow
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}
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fn codegen_unit(&self) -> &Arc<CodegenUnit<'tcx>> {
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&self.codegen_unit
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}
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fn used_statics(&self) -> &RefCell<Vec<&'ll Value>> {
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&self.used_statics
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}
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fn set_frame_pointer_elimination(&self, llfn: &'ll Value) {
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attributes::set_frame_pointer_elimination(self, llfn)
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}
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fn apply_target_cpu_attr(&self, llfn: &'ll Value) {
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attributes::apply_target_cpu_attr(self, llfn)
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}
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fn create_used_variable(&self) {
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let name = const_cstr!("llvm.used");
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let section = const_cstr!("llvm.metadata");
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let array = self.const_array(
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&self.type_ptr_to(self.type_i8()),
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&*self.used_statics.borrow()
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);
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unsafe {
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let g = llvm::LLVMAddGlobal(self.llmod,
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self.val_ty(array),
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name.as_ptr());
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llvm::LLVMSetInitializer(g, array);
|
|
llvm::LLVMRustSetLinkage(g, llvm::Linkage::AppendingLinkage);
|
|
llvm::LLVMSetSection(g, section.as_ptr());
|
|
}
|
|
}
|
|
}
|
|
|
|
impl CodegenCx<'b, 'tcx> {
|
|
crate fn get_intrinsic(&self, key: &str) -> &'b Value {
|
|
if let Some(v) = self.intrinsics.borrow().get(key).cloned() {
|
|
return v;
|
|
}
|
|
|
|
self.declare_intrinsic(key).unwrap_or_else(|| bug!("unknown intrinsic '{}'", key))
|
|
}
|
|
|
|
fn insert_intrinsic(
|
|
&self, name: &'static str, args: Option<&[&'b llvm::Type]>, ret: &'b llvm::Type
|
|
) -> &'b llvm::Value {
|
|
let fn_ty = if let Some(args) = args {
|
|
self.type_func(args, ret)
|
|
} else {
|
|
self.type_variadic_func(&[], ret)
|
|
};
|
|
let f = self.declare_cfn(name, fn_ty);
|
|
llvm::SetUnnamedAddr(f, false);
|
|
self.intrinsics.borrow_mut().insert(name, f);
|
|
f
|
|
}
|
|
|
|
fn declare_intrinsic(
|
|
&self,
|
|
key: &str
|
|
) -> Option<&'b Value> {
|
|
macro_rules! ifn {
|
|
($name:expr, fn() -> $ret:expr) => (
|
|
if key == $name {
|
|
return Some(self.insert_intrinsic($name, Some(&[]), $ret));
|
|
}
|
|
);
|
|
($name:expr, fn(...) -> $ret:expr) => (
|
|
if key == $name {
|
|
return Some(self.insert_intrinsic($name, None, $ret));
|
|
}
|
|
);
|
|
($name:expr, fn($($arg:expr),*) -> $ret:expr) => (
|
|
if key == $name {
|
|
return Some(self.insert_intrinsic($name, Some(&[$($arg),*]), $ret));
|
|
}
|
|
);
|
|
}
|
|
macro_rules! mk_struct {
|
|
($($field_ty:expr),*) => (self.type_struct( &[$($field_ty),*], false))
|
|
}
|
|
|
|
let i8p = self.type_i8p();
|
|
let void = self.type_void();
|
|
let i1 = self.type_i1();
|
|
let t_i8 = self.type_i8();
|
|
let t_i16 = self.type_i16();
|
|
let t_i32 = self.type_i32();
|
|
let t_i64 = self.type_i64();
|
|
let t_i128 = self.type_i128();
|
|
let t_f32 = self.type_f32();
|
|
let t_f64 = self.type_f64();
|
|
|
|
macro_rules! vector_types {
|
|
($id_out:ident: $elem_ty:ident, $len:expr) => {
|
|
let $id_out = self.type_vector($elem_ty, $len);
|
|
};
|
|
($($id_out:ident: $elem_ty:ident, $len:expr;)*) => {
|
|
$(vector_types!($id_out: $elem_ty, $len);)*
|
|
}
|
|
}
|
|
vector_types! {
|
|
t_v2f32: t_f32, 2;
|
|
t_v4f32: t_f32, 4;
|
|
t_v8f32: t_f32, 8;
|
|
t_v16f32: t_f32, 16;
|
|
|
|
t_v2f64: t_f64, 2;
|
|
t_v4f64: t_f64, 4;
|
|
t_v8f64: t_f64, 8;
|
|
}
|
|
|
|
ifn!("llvm.memset.p0i8.i16", fn(i8p, t_i8, t_i16, 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.v2f32", fn(t_v2f32, t_i32) -> t_v2f32);
|
|
ifn!("llvm.powi.v4f32", fn(t_v4f32, t_i32) -> t_v4f32);
|
|
ifn!("llvm.powi.v8f32", fn(t_v8f32, t_i32) -> t_v8f32);
|
|
ifn!("llvm.powi.v16f32", fn(t_v16f32, t_i32) -> t_v16f32);
|
|
ifn!("llvm.powi.f64", fn(t_f64, t_i32) -> t_f64);
|
|
ifn!("llvm.powi.v2f64", fn(t_v2f64, t_i32) -> t_v2f64);
|
|
ifn!("llvm.powi.v4f64", fn(t_v4f64, t_i32) -> t_v4f64);
|
|
ifn!("llvm.powi.v8f64", fn(t_v8f64, t_i32) -> t_v8f64);
|
|
|
|
ifn!("llvm.pow.f32", fn(t_f32, t_f32) -> t_f32);
|
|
ifn!("llvm.pow.v2f32", fn(t_v2f32, t_v2f32) -> t_v2f32);
|
|
ifn!("llvm.pow.v4f32", fn(t_v4f32, t_v4f32) -> t_v4f32);
|
|
ifn!("llvm.pow.v8f32", fn(t_v8f32, t_v8f32) -> t_v8f32);
|
|
ifn!("llvm.pow.v16f32", fn(t_v16f32, t_v16f32) -> t_v16f32);
|
|
ifn!("llvm.pow.f64", fn(t_f64, t_f64) -> t_f64);
|
|
ifn!("llvm.pow.v2f64", fn(t_v2f64, t_v2f64) -> t_v2f64);
|
|
ifn!("llvm.pow.v4f64", fn(t_v4f64, t_v4f64) -> t_v4f64);
|
|
ifn!("llvm.pow.v8f64", fn(t_v8f64, t_v8f64) -> t_v8f64);
|
|
|
|
ifn!("llvm.sqrt.f32", fn(t_f32) -> t_f32);
|
|
ifn!("llvm.sqrt.v2f32", fn(t_v2f32) -> t_v2f32);
|
|
ifn!("llvm.sqrt.v4f32", fn(t_v4f32) -> t_v4f32);
|
|
ifn!("llvm.sqrt.v8f32", fn(t_v8f32) -> t_v8f32);
|
|
ifn!("llvm.sqrt.v16f32", fn(t_v16f32) -> t_v16f32);
|
|
ifn!("llvm.sqrt.f64", fn(t_f64) -> t_f64);
|
|
ifn!("llvm.sqrt.v2f64", fn(t_v2f64) -> t_v2f64);
|
|
ifn!("llvm.sqrt.v4f64", fn(t_v4f64) -> t_v4f64);
|
|
ifn!("llvm.sqrt.v8f64", fn(t_v8f64) -> t_v8f64);
|
|
|
|
ifn!("llvm.sin.f32", fn(t_f32) -> t_f32);
|
|
ifn!("llvm.sin.v2f32", fn(t_v2f32) -> t_v2f32);
|
|
ifn!("llvm.sin.v4f32", fn(t_v4f32) -> t_v4f32);
|
|
ifn!("llvm.sin.v8f32", fn(t_v8f32) -> t_v8f32);
|
|
ifn!("llvm.sin.v16f32", fn(t_v16f32) -> t_v16f32);
|
|
ifn!("llvm.sin.f64", fn(t_f64) -> t_f64);
|
|
ifn!("llvm.sin.v2f64", fn(t_v2f64) -> t_v2f64);
|
|
ifn!("llvm.sin.v4f64", fn(t_v4f64) -> t_v4f64);
|
|
ifn!("llvm.sin.v8f64", fn(t_v8f64) -> t_v8f64);
|
|
|
|
ifn!("llvm.cos.f32", fn(t_f32) -> t_f32);
|
|
ifn!("llvm.cos.v2f32", fn(t_v2f32) -> t_v2f32);
|
|
ifn!("llvm.cos.v4f32", fn(t_v4f32) -> t_v4f32);
|
|
ifn!("llvm.cos.v8f32", fn(t_v8f32) -> t_v8f32);
|
|
ifn!("llvm.cos.v16f32", fn(t_v16f32) -> t_v16f32);
|
|
ifn!("llvm.cos.f64", fn(t_f64) -> t_f64);
|
|
ifn!("llvm.cos.v2f64", fn(t_v2f64) -> t_v2f64);
|
|
ifn!("llvm.cos.v4f64", fn(t_v4f64) -> t_v4f64);
|
|
ifn!("llvm.cos.v8f64", fn(t_v8f64) -> t_v8f64);
|
|
|
|
ifn!("llvm.exp.f32", fn(t_f32) -> t_f32);
|
|
ifn!("llvm.exp.v2f32", fn(t_v2f32) -> t_v2f32);
|
|
ifn!("llvm.exp.v4f32", fn(t_v4f32) -> t_v4f32);
|
|
ifn!("llvm.exp.v8f32", fn(t_v8f32) -> t_v8f32);
|
|
ifn!("llvm.exp.v16f32", fn(t_v16f32) -> t_v16f32);
|
|
ifn!("llvm.exp.f64", fn(t_f64) -> t_f64);
|
|
ifn!("llvm.exp.v2f64", fn(t_v2f64) -> t_v2f64);
|
|
ifn!("llvm.exp.v4f64", fn(t_v4f64) -> t_v4f64);
|
|
ifn!("llvm.exp.v8f64", fn(t_v8f64) -> t_v8f64);
|
|
|
|
ifn!("llvm.exp2.f32", fn(t_f32) -> t_f32);
|
|
ifn!("llvm.exp2.v2f32", fn(t_v2f32) -> t_v2f32);
|
|
ifn!("llvm.exp2.v4f32", fn(t_v4f32) -> t_v4f32);
|
|
ifn!("llvm.exp2.v8f32", fn(t_v8f32) -> t_v8f32);
|
|
ifn!("llvm.exp2.v16f32", fn(t_v16f32) -> t_v16f32);
|
|
ifn!("llvm.exp2.f64", fn(t_f64) -> t_f64);
|
|
ifn!("llvm.exp2.v2f64", fn(t_v2f64) -> t_v2f64);
|
|
ifn!("llvm.exp2.v4f64", fn(t_v4f64) -> t_v4f64);
|
|
ifn!("llvm.exp2.v8f64", fn(t_v8f64) -> t_v8f64);
|
|
|
|
ifn!("llvm.log.f32", fn(t_f32) -> t_f32);
|
|
ifn!("llvm.log.v2f32", fn(t_v2f32) -> t_v2f32);
|
|
ifn!("llvm.log.v4f32", fn(t_v4f32) -> t_v4f32);
|
|
ifn!("llvm.log.v8f32", fn(t_v8f32) -> t_v8f32);
|
|
ifn!("llvm.log.v16f32", fn(t_v16f32) -> t_v16f32);
|
|
ifn!("llvm.log.f64", fn(t_f64) -> t_f64);
|
|
ifn!("llvm.log.v2f64", fn(t_v2f64) -> t_v2f64);
|
|
ifn!("llvm.log.v4f64", fn(t_v4f64) -> t_v4f64);
|
|
ifn!("llvm.log.v8f64", fn(t_v8f64) -> t_v8f64);
|
|
|
|
ifn!("llvm.log10.f32", fn(t_f32) -> t_f32);
|
|
ifn!("llvm.log10.v2f32", fn(t_v2f32) -> t_v2f32);
|
|
ifn!("llvm.log10.v4f32", fn(t_v4f32) -> t_v4f32);
|
|
ifn!("llvm.log10.v8f32", fn(t_v8f32) -> t_v8f32);
|
|
ifn!("llvm.log10.v16f32", fn(t_v16f32) -> t_v16f32);
|
|
ifn!("llvm.log10.f64", fn(t_f64) -> t_f64);
|
|
ifn!("llvm.log10.v2f64", fn(t_v2f64) -> t_v2f64);
|
|
ifn!("llvm.log10.v4f64", fn(t_v4f64) -> t_v4f64);
|
|
ifn!("llvm.log10.v8f64", fn(t_v8f64) -> t_v8f64);
|
|
|
|
ifn!("llvm.log2.f32", fn(t_f32) -> t_f32);
|
|
ifn!("llvm.log2.v2f32", fn(t_v2f32) -> t_v2f32);
|
|
ifn!("llvm.log2.v4f32", fn(t_v4f32) -> t_v4f32);
|
|
ifn!("llvm.log2.v8f32", fn(t_v8f32) -> t_v8f32);
|
|
ifn!("llvm.log2.v16f32", fn(t_v16f32) -> t_v16f32);
|
|
ifn!("llvm.log2.f64", fn(t_f64) -> t_f64);
|
|
ifn!("llvm.log2.v2f64", fn(t_v2f64) -> t_v2f64);
|
|
ifn!("llvm.log2.v4f64", fn(t_v4f64) -> t_v4f64);
|
|
ifn!("llvm.log2.v8f64", fn(t_v8f64) -> t_v8f64);
|
|
|
|
ifn!("llvm.fma.f32", fn(t_f32, t_f32, t_f32) -> t_f32);
|
|
ifn!("llvm.fma.v2f32", fn(t_v2f32, t_v2f32, t_v2f32) -> t_v2f32);
|
|
ifn!("llvm.fma.v4f32", fn(t_v4f32, t_v4f32, t_v4f32) -> t_v4f32);
|
|
ifn!("llvm.fma.v8f32", fn(t_v8f32, t_v8f32, t_v8f32) -> t_v8f32);
|
|
ifn!("llvm.fma.v16f32", fn(t_v16f32, t_v16f32, t_v16f32) -> t_v16f32);
|
|
ifn!("llvm.fma.f64", fn(t_f64, t_f64, t_f64) -> t_f64);
|
|
ifn!("llvm.fma.v2f64", fn(t_v2f64, t_v2f64, t_v2f64) -> t_v2f64);
|
|
ifn!("llvm.fma.v4f64", fn(t_v4f64, t_v4f64, t_v4f64) -> t_v4f64);
|
|
ifn!("llvm.fma.v8f64", fn(t_v8f64, t_v8f64, t_v8f64) -> t_v8f64);
|
|
|
|
ifn!("llvm.fabs.f32", fn(t_f32) -> t_f32);
|
|
ifn!("llvm.fabs.v2f32", fn(t_v2f32) -> t_v2f32);
|
|
ifn!("llvm.fabs.v4f32", fn(t_v4f32) -> t_v4f32);
|
|
ifn!("llvm.fabs.v8f32", fn(t_v8f32) -> t_v8f32);
|
|
ifn!("llvm.fabs.v16f32", fn(t_v16f32) -> t_v16f32);
|
|
ifn!("llvm.fabs.f64", fn(t_f64) -> t_f64);
|
|
ifn!("llvm.fabs.v2f64", fn(t_v2f64) -> t_v2f64);
|
|
ifn!("llvm.fabs.v4f64", fn(t_v4f64) -> t_v4f64);
|
|
ifn!("llvm.fabs.v8f64", fn(t_v8f64) -> t_v8f64);
|
|
|
|
ifn!("llvm.minnum.f32", fn(t_f32, t_f32) -> t_f32);
|
|
ifn!("llvm.minnum.f64", fn(t_f64, t_f64) -> t_f64);
|
|
ifn!("llvm.maxnum.f32", fn(t_f32, t_f32) -> t_f32);
|
|
ifn!("llvm.maxnum.f64", fn(t_f64, t_f64) -> t_f64);
|
|
|
|
ifn!("llvm.floor.f32", fn(t_f32) -> t_f32);
|
|
ifn!("llvm.floor.v2f32", fn(t_v2f32) -> t_v2f32);
|
|
ifn!("llvm.floor.v4f32", fn(t_v4f32) -> t_v4f32);
|
|
ifn!("llvm.floor.v8f32", fn(t_v8f32) -> t_v8f32);
|
|
ifn!("llvm.floor.v16f32", fn(t_v16f32) -> t_v16f32);
|
|
ifn!("llvm.floor.f64", fn(t_f64) -> t_f64);
|
|
ifn!("llvm.floor.v2f64", fn(t_v2f64) -> t_v2f64);
|
|
ifn!("llvm.floor.v4f64", fn(t_v4f64) -> t_v4f64);
|
|
ifn!("llvm.floor.v8f64", fn(t_v8f64) -> t_v8f64);
|
|
|
|
ifn!("llvm.ceil.f32", fn(t_f32) -> t_f32);
|
|
ifn!("llvm.ceil.v2f32", fn(t_v2f32) -> t_v2f32);
|
|
ifn!("llvm.ceil.v4f32", fn(t_v4f32) -> t_v4f32);
|
|
ifn!("llvm.ceil.v8f32", fn(t_v8f32) -> t_v8f32);
|
|
ifn!("llvm.ceil.v16f32", fn(t_v16f32) -> t_v16f32);
|
|
ifn!("llvm.ceil.f64", fn(t_f64) -> t_f64);
|
|
ifn!("llvm.ceil.v2f64", fn(t_v2f64) -> t_v2f64);
|
|
ifn!("llvm.ceil.v4f64", fn(t_v4f64) -> t_v4f64);
|
|
ifn!("llvm.ceil.v8f64", fn(t_v8f64) -> t_v8f64);
|
|
|
|
ifn!("llvm.trunc.f32", fn(t_f32) -> t_f32);
|
|
ifn!("llvm.trunc.f64", fn(t_f64) -> t_f64);
|
|
|
|
ifn!("llvm.copysign.f32", fn(t_f32, t_f32) -> t_f32);
|
|
ifn!("llvm.copysign.f64", fn(t_f64, t_f64) -> t_f64);
|
|
ifn!("llvm.round.f32", fn(t_f32) -> t_f32);
|
|
ifn!("llvm.round.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.ctpop.i128", fn(t_i128) -> t_i128);
|
|
|
|
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.ctlz.i128", fn(t_i128, i1) -> t_i128);
|
|
|
|
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.cttz.i128", fn(t_i128, i1) -> t_i128);
|
|
|
|
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.bswap.i128", fn(t_i128) -> t_i128);
|
|
|
|
ifn!("llvm.bitreverse.i8", fn(t_i8) -> t_i8);
|
|
ifn!("llvm.bitreverse.i16", fn(t_i16) -> t_i16);
|
|
ifn!("llvm.bitreverse.i32", fn(t_i32) -> t_i32);
|
|
ifn!("llvm.bitreverse.i64", fn(t_i64) -> t_i64);
|
|
ifn!("llvm.bitreverse.i128", fn(t_i128) -> t_i128);
|
|
|
|
ifn!("llvm.fshl.i8", fn(t_i8, t_i8, t_i8) -> t_i8);
|
|
ifn!("llvm.fshl.i16", fn(t_i16, t_i16, t_i16) -> t_i16);
|
|
ifn!("llvm.fshl.i32", fn(t_i32, t_i32, t_i32) -> t_i32);
|
|
ifn!("llvm.fshl.i64", fn(t_i64, t_i64, t_i64) -> t_i64);
|
|
ifn!("llvm.fshl.i128", fn(t_i128, t_i128, t_i128) -> t_i128);
|
|
|
|
ifn!("llvm.fshr.i8", fn(t_i8, t_i8, t_i8) -> t_i8);
|
|
ifn!("llvm.fshr.i16", fn(t_i16, t_i16, t_i16) -> t_i16);
|
|
ifn!("llvm.fshr.i32", fn(t_i32, t_i32, t_i32) -> t_i32);
|
|
ifn!("llvm.fshr.i64", fn(t_i64, t_i64, t_i64) -> t_i64);
|
|
ifn!("llvm.fshr.i128", fn(t_i128, t_i128, t_i128) -> t_i128);
|
|
|
|
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.sadd.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct!{t_i128, 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.uadd.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct!{t_i128, 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.ssub.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct!{t_i128, 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.usub.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct!{t_i128, 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.smul.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct!{t_i128, 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.umul.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct!{t_i128, i1});
|
|
|
|
ifn!("llvm.sadd.sat.i8", fn(t_i8, t_i8) -> t_i8);
|
|
ifn!("llvm.sadd.sat.i16", fn(t_i16, t_i16) -> t_i16);
|
|
ifn!("llvm.sadd.sat.i32", fn(t_i32, t_i32) -> t_i32);
|
|
ifn!("llvm.sadd.sat.i64", fn(t_i64, t_i64) -> t_i64);
|
|
ifn!("llvm.sadd.sat.i128", fn(t_i128, t_i128) -> t_i128);
|
|
|
|
ifn!("llvm.uadd.sat.i8", fn(t_i8, t_i8) -> t_i8);
|
|
ifn!("llvm.uadd.sat.i16", fn(t_i16, t_i16) -> t_i16);
|
|
ifn!("llvm.uadd.sat.i32", fn(t_i32, t_i32) -> t_i32);
|
|
ifn!("llvm.uadd.sat.i64", fn(t_i64, t_i64) -> t_i64);
|
|
ifn!("llvm.uadd.sat.i128", fn(t_i128, t_i128) -> t_i128);
|
|
|
|
ifn!("llvm.ssub.sat.i8", fn(t_i8, t_i8) -> t_i8);
|
|
ifn!("llvm.ssub.sat.i16", fn(t_i16, t_i16) -> t_i16);
|
|
ifn!("llvm.ssub.sat.i32", fn(t_i32, t_i32) -> t_i32);
|
|
ifn!("llvm.ssub.sat.i64", fn(t_i64, t_i64) -> t_i64);
|
|
ifn!("llvm.ssub.sat.i128", fn(t_i128, t_i128) -> t_i128);
|
|
|
|
ifn!("llvm.usub.sat.i8", fn(t_i8, t_i8) -> t_i8);
|
|
ifn!("llvm.usub.sat.i16", fn(t_i16, t_i16) -> t_i16);
|
|
ifn!("llvm.usub.sat.i32", fn(t_i32, t_i32) -> t_i32);
|
|
ifn!("llvm.usub.sat.i64", fn(t_i64, t_i64) -> t_i64);
|
|
ifn!("llvm.usub.sat.i128", fn(t_i128, t_i128) -> t_i128);
|
|
|
|
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.eh.typeid.for", fn(i8p) -> t_i32);
|
|
ifn!("llvm.localescape", fn(...) -> void);
|
|
ifn!("llvm.localrecover", fn(i8p, i8p, t_i32) -> i8p);
|
|
ifn!("llvm.x86.seh.recoverfp", fn(i8p, i8p) -> i8p);
|
|
|
|
ifn!("llvm.assume", fn(i1) -> void);
|
|
ifn!("llvm.prefetch", fn(i8p, t_i32, t_i32, t_i32) -> void);
|
|
|
|
// variadic intrinsics
|
|
ifn!("llvm.va_start", fn(i8p) -> void);
|
|
ifn!("llvm.va_end", fn(i8p) -> void);
|
|
ifn!("llvm.va_copy", fn(i8p, i8p) -> void);
|
|
|
|
if self.sess().opts.debuginfo != DebugInfo::None {
|
|
ifn!("llvm.dbg.declare", fn(self.type_metadata(), self.type_metadata()) -> void);
|
|
ifn!("llvm.dbg.value", fn(self.type_metadata(), t_i64, self.type_metadata()) -> void);
|
|
}
|
|
return None;
|
|
}
|
|
}
|
|
|
|
impl<'b, 'tcx> CodegenCx<'b, 'tcx> {
|
|
/// Generates a new symbol name with the given prefix. This symbol name must
|
|
/// only be used for definitions with `internal` or `private` linkage.
|
|
pub fn generate_local_symbol_name(&self, prefix: &str) -> String {
|
|
let idx = self.local_gen_sym_counter.get();
|
|
self.local_gen_sym_counter.set(idx + 1);
|
|
// Include a '.' character, so there can be no accidental conflicts with
|
|
// user defined names
|
|
let mut name = String::with_capacity(prefix.len() + 6);
|
|
name.push_str(prefix);
|
|
name.push_str(".");
|
|
base_n::push_str(idx as u128, base_n::ALPHANUMERIC_ONLY, &mut name);
|
|
name
|
|
}
|
|
}
|
|
|
|
impl ty::layout::HasDataLayout for CodegenCx<'ll, 'tcx> {
|
|
fn data_layout(&self) -> &ty::layout::TargetDataLayout {
|
|
&self.tcx.data_layout
|
|
}
|
|
}
|
|
|
|
impl HasTargetSpec for CodegenCx<'ll, 'tcx> {
|
|
fn target_spec(&self) -> &Target {
|
|
&self.tcx.sess.target.target
|
|
}
|
|
}
|
|
|
|
impl ty::layout::HasTyCtxt<'tcx> for CodegenCx<'ll, 'tcx> {
|
|
fn tcx(&self) -> TyCtxt<'tcx> {
|
|
self.tcx
|
|
}
|
|
}
|
|
|
|
impl LayoutOf for CodegenCx<'ll, 'tcx> {
|
|
type Ty = Ty<'tcx>;
|
|
type TyLayout = TyLayout<'tcx>;
|
|
|
|
fn layout_of(&self, ty: Ty<'tcx>) -> Self::TyLayout {
|
|
self.spanned_layout_of(ty, DUMMY_SP)
|
|
}
|
|
|
|
fn spanned_layout_of(&self, ty: Ty<'tcx>, span: Span) -> Self::TyLayout {
|
|
self.tcx.layout_of(ty::ParamEnv::reveal_all().and(ty))
|
|
.unwrap_or_else(|e| if let LayoutError::SizeOverflow(_) = e {
|
|
self.sess().span_fatal(span, &e.to_string())
|
|
} else {
|
|
bug!("failed to get layout for `{}`: {}", ty, e)
|
|
})
|
|
}
|
|
}
|
|
|
|
impl<'tcx, 'll> HasParamEnv<'tcx> for CodegenCx<'ll, 'tcx> {
|
|
fn param_env(&self) -> ty::ParamEnv<'tcx> {
|
|
ty::ParamEnv::reveal_all()
|
|
}
|
|
}
|