5 use crate::value::Value;
6 use rustc::dep_graph::DepGraphSafe;
9 use crate::type_::Type;
10 use rustc_codegen_ssa::traits::*;
12 use rustc_data_structures::base_n;
13 use rustc_data_structures::small_c_str::SmallCStr;
14 use rustc::mir::mono::CodegenUnit;
15 use rustc::session::config::{self, DebugInfo};
16 use rustc::session::Session;
17 use rustc::ty::layout::{
18 LayoutError, LayoutOf, PointeeInfo, Size, TyLayout, VariantIdx, HasParamEnv
20 use rustc::ty::{self, Ty, TyCtxt, Instance};
21 use rustc::util::nodemap::FxHashMap;
22 use rustc_target::spec::{HasTargetSpec, Target};
23 use rustc_codegen_ssa::base::wants_msvc_seh;
24 use crate::callee::get_fn;
27 use std::cell::{Cell, RefCell};
31 use syntax::symbol::Symbol;
32 use syntax::source_map::{DUMMY_SP, Span};
35 /// There is one `CodegenCx` per compilation unit. Each one has its own LLVM
36 /// `llvm::Context` so that several compilation units may be optimized in parallel.
37 /// All other LLVM data structures in the `CodegenCx` are tied to that `llvm::Context`.
38 pub struct CodegenCx<'ll, 'tcx> {
39 pub tcx: TyCtxt<'tcx>,
40 pub check_overflow: bool,
41 pub use_dll_storage_attrs: bool,
42 pub tls_model: llvm::ThreadLocalMode,
44 pub llmod: &'ll llvm::Module,
45 pub llcx: &'ll llvm::Context,
46 pub codegen_unit: Arc<CodegenUnit<'tcx>>,
48 /// Cache instances of monomorphic and polymorphic items
49 pub instances: RefCell<FxHashMap<Instance<'tcx>, &'ll Value>>,
50 /// Cache generated vtables
52 RefCell<FxHashMap<(Ty<'tcx>, Option<ty::PolyExistentialTraitRef<'tcx>>), &'ll Value>>,
53 /// Cache of constant strings,
54 pub const_cstr_cache: RefCell<FxHashMap<Symbol, &'ll Value>>,
56 /// Reverse-direction for const ptrs cast from globals.
57 /// Key is a Value holding a *T,
58 /// Val is a Value holding a *[T].
60 /// Needed because LLVM loses pointer->pointee association
61 /// when we ptrcast, and we have to ptrcast during codegen
62 /// of a [T] const because we form a slice, a (*T,usize) pair, not
63 /// a pointer to an LLVM array type. Similar for trait objects.
64 pub const_unsized: RefCell<FxHashMap<&'ll Value, &'ll Value>>,
66 /// Cache of emitted const globals (value -> global)
67 pub const_globals: RefCell<FxHashMap<&'ll Value, &'ll Value>>,
69 /// List of globals for static variables which need to be passed to the
70 /// LLVM function ReplaceAllUsesWith (RAUW) when codegen is complete.
71 /// (We have to make sure we don't invalidate any Values referring
73 pub statics_to_rauw: RefCell<Vec<(&'ll Value, &'ll Value)>>,
75 /// Statics that will be placed in the llvm.used variable
76 /// See <http://llvm.org/docs/LangRef.html#the-llvm-used-global-variable> for details
77 pub used_statics: RefCell<Vec<&'ll Value>>,
79 pub lltypes: RefCell<FxHashMap<(Ty<'tcx>, Option<VariantIdx>), &'ll Type>>,
80 pub scalar_lltypes: RefCell<FxHashMap<Ty<'tcx>, &'ll Type>>,
81 pub pointee_infos: RefCell<FxHashMap<(Ty<'tcx>, Size), Option<PointeeInfo>>>,
82 pub isize_ty: &'ll Type,
84 pub dbg_cx: Option<debuginfo::CrateDebugContext<'ll, 'tcx>>,
86 eh_personality: Cell<Option<&'ll Value>>,
87 eh_unwind_resume: Cell<Option<&'ll Value>>,
88 pub rust_try_fn: Cell<Option<&'ll Value>>,
90 intrinsics: RefCell<FxHashMap<&'static str, &'ll Value>>,
92 /// A counter that is used for generating local symbol names
93 local_gen_sym_counter: Cell<usize>,
96 impl<'ll, 'tcx> DepGraphSafe for CodegenCx<'ll, 'tcx> {}
98 pub fn get_reloc_model(sess: &Session) -> llvm::RelocMode {
99 let reloc_model_arg = match sess.opts.cg.relocation_model {
100 Some(ref s) => &s[..],
101 None => &sess.target.target.options.relocation_model[..],
104 match crate::back::write::RELOC_MODEL_ARGS.iter().find(
105 |&&arg| arg.0 == reloc_model_arg) {
108 sess.err(&format!("{:?} is not a valid relocation mode",
110 sess.abort_if_errors();
116 fn get_tls_model(sess: &Session) -> llvm::ThreadLocalMode {
117 let tls_model_arg = match sess.opts.debugging_opts.tls_model {
118 Some(ref s) => &s[..],
119 None => &sess.target.target.options.tls_model[..],
122 match crate::back::write::TLS_MODEL_ARGS.iter().find(
123 |&&arg| arg.0 == tls_model_arg) {
126 sess.err(&format!("{:?} is not a valid TLS model",
128 sess.abort_if_errors();
134 fn is_any_library(sess: &Session) -> bool {
135 sess.crate_types.borrow().iter().any(|ty| {
136 *ty != config::CrateType::Executable
140 pub fn is_pie_binary(sess: &Session) -> bool {
141 !is_any_library(sess) && get_reloc_model(sess) == llvm::RelocMode::PIC
144 fn strip_function_ptr_alignment(data_layout: String) -> String {
145 // FIXME: Make this more general.
146 data_layout.replace("-Fi8-", "-")
149 pub unsafe fn create_module(
151 llcx: &'ll llvm::Context,
153 ) -> &'ll llvm::Module {
155 let mod_name = SmallCStr::new(mod_name);
156 let llmod = llvm::LLVMModuleCreateWithNameInContext(mod_name.as_ptr(), llcx);
158 let mut target_data_layout = sess.target.target.data_layout.clone();
159 if llvm_util::get_major_version() < 9 {
160 target_data_layout = strip_function_ptr_alignment(target_data_layout);
163 // Ensure the data-layout values hardcoded remain the defaults.
164 if sess.target.target.options.is_builtin {
165 let tm = crate::back::write::create_informational_target_machine(&tcx.sess, false);
166 llvm::LLVMRustSetDataLayoutFromTargetMachine(llmod, tm);
167 llvm::LLVMRustDisposeTargetMachine(tm);
169 let llvm_data_layout = llvm::LLVMGetDataLayout(llmod);
170 let llvm_data_layout = str::from_utf8(CStr::from_ptr(llvm_data_layout).to_bytes())
171 .ok().expect("got a non-UTF8 data-layout from LLVM");
173 // Unfortunately LLVM target specs change over time, and right now we
174 // don't have proper support to work with any more than one
175 // `data_layout` than the one that is in the rust-lang/rust repo. If
176 // this compiler is configured against a custom LLVM, we may have a
177 // differing data layout, even though we should update our own to use
180 // As an interim hack, if CFG_LLVM_ROOT is not an empty string then we
181 // disable this check entirely as we may be configured with something
182 // that has a different target layout.
184 // Unsure if this will actually cause breakage when rustc is configured
188 let cfg_llvm_root = option_env!("CFG_LLVM_ROOT").unwrap_or("");
189 let custom_llvm_used = cfg_llvm_root.trim() != "";
191 if !custom_llvm_used && target_data_layout != llvm_data_layout {
192 bug!("data-layout for builtin `{}` target, `{}`, \
193 differs from LLVM default, `{}`",
194 sess.target.target.llvm_target,
200 let data_layout = SmallCStr::new(&target_data_layout);
201 llvm::LLVMSetDataLayout(llmod, data_layout.as_ptr());
203 let llvm_target = SmallCStr::new(&sess.target.target.llvm_target);
204 llvm::LLVMRustSetNormalizedTarget(llmod, llvm_target.as_ptr());
206 if get_reloc_model(sess) == llvm::RelocMode::PIC {
207 llvm::LLVMRustSetModulePICLevel(llmod);
210 if is_pie_binary(sess) {
211 llvm::LLVMRustSetModulePIELevel(llmod);
214 // If skipping the PLT is enabled, we need to add some module metadata
215 // to ensure intrinsic calls don't use it.
216 if !sess.needs_plt() {
217 let avoid_plt = "RtLibUseGOT\0".as_ptr().cast();
218 llvm::LLVMRustAddModuleFlag(llmod, avoid_plt, 1);
224 impl<'ll, 'tcx> CodegenCx<'ll, 'tcx> {
227 codegen_unit: Arc<CodegenUnit<'tcx>>,
228 llvm_module: &'ll crate::ModuleLlvm,
230 // An interesting part of Windows which MSVC forces our hand on (and
231 // apparently MinGW didn't) is the usage of `dllimport` and `dllexport`
232 // attributes in LLVM IR as well as native dependencies (in C these
233 // correspond to `__declspec(dllimport)`).
235 // Whenever a dynamic library is built by MSVC it must have its public
236 // interface specified by functions tagged with `dllexport` or otherwise
237 // they're not available to be linked against. This poses a few problems
238 // for the compiler, some of which are somewhat fundamental, but we use
239 // the `use_dll_storage_attrs` variable below to attach the `dllexport`
240 // attribute to all LLVM functions that are exported e.g., they're
241 // already tagged with external linkage). This is suboptimal for a few
244 // * If an object file will never be included in a dynamic library,
245 // there's no need to attach the dllexport attribute. Most object
246 // files in Rust are not destined to become part of a dll as binaries
247 // are statically linked by default.
248 // * If the compiler is emitting both an rlib and a dylib, the same
249 // source object file is currently used but with MSVC this may be less
250 // feasible. The compiler may be able to get around this, but it may
251 // involve some invasive changes to deal with this.
253 // The flipside of this situation is that whenever you link to a dll and
254 // you import a function from it, the import should be tagged with
255 // `dllimport`. At this time, however, the compiler does not emit
256 // `dllimport` for any declarations other than constants (where it is
257 // required), which is again suboptimal for even more reasons!
259 // * Calling a function imported from another dll without using
260 // `dllimport` causes the linker/compiler to have extra overhead (one
261 // `jmp` instruction on x86) when calling the function.
262 // * The same object file may be used in different circumstances, so a
263 // function may be imported from a dll if the object is linked into a
264 // dll, but it may be just linked against if linked into an rlib.
265 // * The compiler has no knowledge about whether native functions should
266 // be tagged dllimport or not.
268 // For now the compiler takes the perf hit (I do not have any numbers to
269 // this effect) by marking very little as `dllimport` and praying the
270 // linker will take care of everything. Fixing this problem will likely
271 // require adding a few attributes to Rust itself (feature gated at the
272 // start) and then strongly recommending static linkage on MSVC!
273 let use_dll_storage_attrs = tcx.sess.target.target.options.is_like_msvc;
275 let check_overflow = tcx.sess.overflow_checks();
277 let tls_model = get_tls_model(&tcx.sess);
279 let (llcx, llmod) = (&*llvm_module.llcx, llvm_module.llmod());
281 let dbg_cx = if tcx.sess.opts.debuginfo != DebugInfo::None {
282 let dctx = debuginfo::CrateDebugContext::new(llmod);
283 debuginfo::metadata::compile_unit_metadata(tcx,
284 &codegen_unit.name().as_str(),
291 let isize_ty = Type::ix_llcx(llcx, tcx.data_layout.pointer_size.bits());
296 use_dll_storage_attrs,
301 instances: Default::default(),
302 vtables: Default::default(),
303 const_cstr_cache: Default::default(),
304 const_unsized: Default::default(),
305 const_globals: Default::default(),
306 statics_to_rauw: RefCell::new(Vec::new()),
307 used_statics: RefCell::new(Vec::new()),
308 lltypes: Default::default(),
309 scalar_lltypes: Default::default(),
310 pointee_infos: Default::default(),
313 eh_personality: Cell::new(None),
314 eh_unwind_resume: Cell::new(None),
315 rust_try_fn: Cell::new(None),
316 intrinsics: Default::default(),
317 local_gen_sym_counter: Cell::new(0),
321 crate fn statics_to_rauw(&self) -> &RefCell<Vec<(&'ll Value, &'ll Value)>> {
322 &self.statics_to_rauw
326 impl MiscMethods<'tcx> for CodegenCx<'ll, 'tcx> {
327 fn vtables(&self) -> &RefCell<FxHashMap<(Ty<'tcx>,
328 Option<ty::PolyExistentialTraitRef<'tcx>>), &'ll Value>>
333 fn get_fn(&self, instance: Instance<'tcx>) -> &'ll Value {
334 get_fn(self, instance)
337 fn get_fn_addr(&self, instance: Instance<'tcx>) -> &'ll Value {
338 get_fn(self, instance)
341 fn eh_personality(&self) -> &'ll Value {
342 // The exception handling personality function.
344 // If our compilation unit has the `eh_personality` lang item somewhere
345 // within it, then we just need to codegen that. Otherwise, we're
346 // building an rlib which will depend on some upstream implementation of
347 // this function, so we just codegen a generic reference to it. We don't
348 // specify any of the types for the function, we just make it a symbol
349 // that LLVM can later use.
351 // Note that MSVC is a little special here in that we don't use the
352 // `eh_personality` lang item at all. Currently LLVM has support for
353 // both Dwarf and SEH unwind mechanisms for MSVC targets and uses the
354 // *name of the personality function* to decide what kind of unwind side
355 // tables/landing pads to emit. It looks like Dwarf is used by default,
356 // injecting a dependency on the `_Unwind_Resume` symbol for resuming
357 // an "exception", but for MSVC we want to force SEH. This means that we
358 // can't actually have the personality function be our standard
359 // `rust_eh_personality` function, but rather we wired it up to the
360 // CRT's custom personality function, which forces LLVM to consider
361 // landing pads as "landing pads for SEH".
362 if let Some(llpersonality) = self.eh_personality.get() {
366 let llfn = match tcx.lang_items().eh_personality() {
367 Some(def_id) if !wants_msvc_seh(self.sess()) => {
369 ty::Instance::resolve(
371 ty::ParamEnv::reveal_all(),
373 tcx.intern_substs(&[]),
378 let name = if wants_msvc_seh(self.sess()) {
381 "rust_eh_personality"
383 let fty = self.type_variadic_func(&[], self.type_i32());
384 self.declare_cfn(name, fty)
387 attributes::apply_target_cpu_attr(self, llfn);
388 self.eh_personality.set(Some(llfn));
392 // Returns a Value of the "eh_unwind_resume" lang item if one is defined,
393 // otherwise declares it as an external function.
394 fn eh_unwind_resume(&self) -> &'ll Value {
395 let unwresume = &self.eh_unwind_resume;
396 if let Some(llfn) = unwresume.get() {
401 assert!(self.sess().target.target.options.custom_unwind_resume);
402 if let Some(def_id) = tcx.lang_items().eh_unwind_resume() {
403 let llfn = self.get_fn_addr(
404 ty::Instance::resolve(
406 ty::ParamEnv::reveal_all(),
408 tcx.intern_substs(&[]),
411 unwresume.set(Some(llfn));
415 let sig = ty::Binder::bind(tcx.mk_fn_sig(
416 iter::once(tcx.mk_mut_ptr(tcx.types.u8)),
419 hir::Unsafety::Unsafe,
423 let llfn = self.declare_fn("rust_eh_unwind_resume", sig);
424 attributes::apply_target_cpu_attr(self, llfn);
425 unwresume.set(Some(llfn));
429 fn sess(&self) -> &Session {
433 fn check_overflow(&self) -> bool {
437 fn codegen_unit(&self) -> &Arc<CodegenUnit<'tcx>> {
441 fn used_statics(&self) -> &RefCell<Vec<&'ll Value>> {
445 fn set_frame_pointer_elimination(&self, llfn: &'ll Value) {
446 attributes::set_frame_pointer_elimination(self, llfn)
449 fn apply_target_cpu_attr(&self, llfn: &'ll Value) {
450 attributes::apply_target_cpu_attr(self, llfn)
453 fn create_used_variable(&self) {
454 let name = const_cstr!("llvm.used");
455 let section = const_cstr!("llvm.metadata");
456 let array = self.const_array(
457 &self.type_ptr_to(self.type_i8()),
458 &*self.used_statics.borrow()
462 let g = llvm::LLVMAddGlobal(self.llmod,
465 llvm::LLVMSetInitializer(g, array);
466 llvm::LLVMRustSetLinkage(g, llvm::Linkage::AppendingLinkage);
467 llvm::LLVMSetSection(g, section.as_ptr());
472 impl CodegenCx<'b, 'tcx> {
473 crate fn get_intrinsic(&self, key: &str) -> &'b Value {
474 if let Some(v) = self.intrinsics.borrow().get(key).cloned() {
478 self.declare_intrinsic(key).unwrap_or_else(|| bug!("unknown intrinsic '{}'", key))
482 &self, name: &'static str, args: Option<&[&'b llvm::Type]>, ret: &'b llvm::Type
483 ) -> &'b llvm::Value {
484 let fn_ty = if let Some(args) = args {
485 self.type_func(args, ret)
487 self.type_variadic_func(&[], ret)
489 let f = self.declare_cfn(name, fn_ty);
490 llvm::SetUnnamedAddr(f, false);
491 self.intrinsics.borrow_mut().insert(name, f);
495 fn declare_intrinsic(
498 ) -> Option<&'b Value> {
500 ($name:expr, fn() -> $ret:expr) => (
502 return Some(self.insert_intrinsic($name, Some(&[]), $ret));
505 ($name:expr, fn(...) -> $ret:expr) => (
507 return Some(self.insert_intrinsic($name, None, $ret));
510 ($name:expr, fn($($arg:expr),*) -> $ret:expr) => (
512 return Some(self.insert_intrinsic($name, Some(&[$($arg),*]), $ret));
516 macro_rules! mk_struct {
517 ($($field_ty:expr),*) => (self.type_struct( &[$($field_ty),*], false))
520 let i8p = self.type_i8p();
521 let void = self.type_void();
522 let i1 = self.type_i1();
523 let t_i8 = self.type_i8();
524 let t_i16 = self.type_i16();
525 let t_i32 = self.type_i32();
526 let t_i64 = self.type_i64();
527 let t_i128 = self.type_i128();
528 let t_f32 = self.type_f32();
529 let t_f64 = self.type_f64();
531 macro_rules! vector_types {
532 ($id_out:ident: $elem_ty:ident, $len:expr) => {
533 let $id_out = self.type_vector($elem_ty, $len);
535 ($($id_out:ident: $elem_ty:ident, $len:expr;)*) => {
536 $(vector_types!($id_out: $elem_ty, $len);)*
550 ifn!("llvm.memset.p0i8.i16", fn(i8p, t_i8, t_i16, t_i32, i1) -> void);
551 ifn!("llvm.memset.p0i8.i32", fn(i8p, t_i8, t_i32, t_i32, i1) -> void);
552 ifn!("llvm.memset.p0i8.i64", fn(i8p, t_i8, t_i64, t_i32, i1) -> void);
554 ifn!("llvm.trap", fn() -> void);
555 ifn!("llvm.debugtrap", fn() -> void);
556 ifn!("llvm.frameaddress", fn(t_i32) -> i8p);
557 ifn!("llvm.sideeffect", fn() -> void);
559 ifn!("llvm.powi.f32", fn(t_f32, t_i32) -> t_f32);
560 ifn!("llvm.powi.v2f32", fn(t_v2f32, t_i32) -> t_v2f32);
561 ifn!("llvm.powi.v4f32", fn(t_v4f32, t_i32) -> t_v4f32);
562 ifn!("llvm.powi.v8f32", fn(t_v8f32, t_i32) -> t_v8f32);
563 ifn!("llvm.powi.v16f32", fn(t_v16f32, t_i32) -> t_v16f32);
564 ifn!("llvm.powi.f64", fn(t_f64, t_i32) -> t_f64);
565 ifn!("llvm.powi.v2f64", fn(t_v2f64, t_i32) -> t_v2f64);
566 ifn!("llvm.powi.v4f64", fn(t_v4f64, t_i32) -> t_v4f64);
567 ifn!("llvm.powi.v8f64", fn(t_v8f64, t_i32) -> t_v8f64);
569 ifn!("llvm.pow.f32", fn(t_f32, t_f32) -> t_f32);
570 ifn!("llvm.pow.v2f32", fn(t_v2f32, t_v2f32) -> t_v2f32);
571 ifn!("llvm.pow.v4f32", fn(t_v4f32, t_v4f32) -> t_v4f32);
572 ifn!("llvm.pow.v8f32", fn(t_v8f32, t_v8f32) -> t_v8f32);
573 ifn!("llvm.pow.v16f32", fn(t_v16f32, t_v16f32) -> t_v16f32);
574 ifn!("llvm.pow.f64", fn(t_f64, t_f64) -> t_f64);
575 ifn!("llvm.pow.v2f64", fn(t_v2f64, t_v2f64) -> t_v2f64);
576 ifn!("llvm.pow.v4f64", fn(t_v4f64, t_v4f64) -> t_v4f64);
577 ifn!("llvm.pow.v8f64", fn(t_v8f64, t_v8f64) -> t_v8f64);
579 ifn!("llvm.sqrt.f32", fn(t_f32) -> t_f32);
580 ifn!("llvm.sqrt.v2f32", fn(t_v2f32) -> t_v2f32);
581 ifn!("llvm.sqrt.v4f32", fn(t_v4f32) -> t_v4f32);
582 ifn!("llvm.sqrt.v8f32", fn(t_v8f32) -> t_v8f32);
583 ifn!("llvm.sqrt.v16f32", fn(t_v16f32) -> t_v16f32);
584 ifn!("llvm.sqrt.f64", fn(t_f64) -> t_f64);
585 ifn!("llvm.sqrt.v2f64", fn(t_v2f64) -> t_v2f64);
586 ifn!("llvm.sqrt.v4f64", fn(t_v4f64) -> t_v4f64);
587 ifn!("llvm.sqrt.v8f64", fn(t_v8f64) -> t_v8f64);
589 ifn!("llvm.sin.f32", fn(t_f32) -> t_f32);
590 ifn!("llvm.sin.v2f32", fn(t_v2f32) -> t_v2f32);
591 ifn!("llvm.sin.v4f32", fn(t_v4f32) -> t_v4f32);
592 ifn!("llvm.sin.v8f32", fn(t_v8f32) -> t_v8f32);
593 ifn!("llvm.sin.v16f32", fn(t_v16f32) -> t_v16f32);
594 ifn!("llvm.sin.f64", fn(t_f64) -> t_f64);
595 ifn!("llvm.sin.v2f64", fn(t_v2f64) -> t_v2f64);
596 ifn!("llvm.sin.v4f64", fn(t_v4f64) -> t_v4f64);
597 ifn!("llvm.sin.v8f64", fn(t_v8f64) -> t_v8f64);
599 ifn!("llvm.cos.f32", fn(t_f32) -> t_f32);
600 ifn!("llvm.cos.v2f32", fn(t_v2f32) -> t_v2f32);
601 ifn!("llvm.cos.v4f32", fn(t_v4f32) -> t_v4f32);
602 ifn!("llvm.cos.v8f32", fn(t_v8f32) -> t_v8f32);
603 ifn!("llvm.cos.v16f32", fn(t_v16f32) -> t_v16f32);
604 ifn!("llvm.cos.f64", fn(t_f64) -> t_f64);
605 ifn!("llvm.cos.v2f64", fn(t_v2f64) -> t_v2f64);
606 ifn!("llvm.cos.v4f64", fn(t_v4f64) -> t_v4f64);
607 ifn!("llvm.cos.v8f64", fn(t_v8f64) -> t_v8f64);
609 ifn!("llvm.exp.f32", fn(t_f32) -> t_f32);
610 ifn!("llvm.exp.v2f32", fn(t_v2f32) -> t_v2f32);
611 ifn!("llvm.exp.v4f32", fn(t_v4f32) -> t_v4f32);
612 ifn!("llvm.exp.v8f32", fn(t_v8f32) -> t_v8f32);
613 ifn!("llvm.exp.v16f32", fn(t_v16f32) -> t_v16f32);
614 ifn!("llvm.exp.f64", fn(t_f64) -> t_f64);
615 ifn!("llvm.exp.v2f64", fn(t_v2f64) -> t_v2f64);
616 ifn!("llvm.exp.v4f64", fn(t_v4f64) -> t_v4f64);
617 ifn!("llvm.exp.v8f64", fn(t_v8f64) -> t_v8f64);
619 ifn!("llvm.exp2.f32", fn(t_f32) -> t_f32);
620 ifn!("llvm.exp2.v2f32", fn(t_v2f32) -> t_v2f32);
621 ifn!("llvm.exp2.v4f32", fn(t_v4f32) -> t_v4f32);
622 ifn!("llvm.exp2.v8f32", fn(t_v8f32) -> t_v8f32);
623 ifn!("llvm.exp2.v16f32", fn(t_v16f32) -> t_v16f32);
624 ifn!("llvm.exp2.f64", fn(t_f64) -> t_f64);
625 ifn!("llvm.exp2.v2f64", fn(t_v2f64) -> t_v2f64);
626 ifn!("llvm.exp2.v4f64", fn(t_v4f64) -> t_v4f64);
627 ifn!("llvm.exp2.v8f64", fn(t_v8f64) -> t_v8f64);
629 ifn!("llvm.log.f32", fn(t_f32) -> t_f32);
630 ifn!("llvm.log.v2f32", fn(t_v2f32) -> t_v2f32);
631 ifn!("llvm.log.v4f32", fn(t_v4f32) -> t_v4f32);
632 ifn!("llvm.log.v8f32", fn(t_v8f32) -> t_v8f32);
633 ifn!("llvm.log.v16f32", fn(t_v16f32) -> t_v16f32);
634 ifn!("llvm.log.f64", fn(t_f64) -> t_f64);
635 ifn!("llvm.log.v2f64", fn(t_v2f64) -> t_v2f64);
636 ifn!("llvm.log.v4f64", fn(t_v4f64) -> t_v4f64);
637 ifn!("llvm.log.v8f64", fn(t_v8f64) -> t_v8f64);
639 ifn!("llvm.log10.f32", fn(t_f32) -> t_f32);
640 ifn!("llvm.log10.v2f32", fn(t_v2f32) -> t_v2f32);
641 ifn!("llvm.log10.v4f32", fn(t_v4f32) -> t_v4f32);
642 ifn!("llvm.log10.v8f32", fn(t_v8f32) -> t_v8f32);
643 ifn!("llvm.log10.v16f32", fn(t_v16f32) -> t_v16f32);
644 ifn!("llvm.log10.f64", fn(t_f64) -> t_f64);
645 ifn!("llvm.log10.v2f64", fn(t_v2f64) -> t_v2f64);
646 ifn!("llvm.log10.v4f64", fn(t_v4f64) -> t_v4f64);
647 ifn!("llvm.log10.v8f64", fn(t_v8f64) -> t_v8f64);
649 ifn!("llvm.log2.f32", fn(t_f32) -> t_f32);
650 ifn!("llvm.log2.v2f32", fn(t_v2f32) -> t_v2f32);
651 ifn!("llvm.log2.v4f32", fn(t_v4f32) -> t_v4f32);
652 ifn!("llvm.log2.v8f32", fn(t_v8f32) -> t_v8f32);
653 ifn!("llvm.log2.v16f32", fn(t_v16f32) -> t_v16f32);
654 ifn!("llvm.log2.f64", fn(t_f64) -> t_f64);
655 ifn!("llvm.log2.v2f64", fn(t_v2f64) -> t_v2f64);
656 ifn!("llvm.log2.v4f64", fn(t_v4f64) -> t_v4f64);
657 ifn!("llvm.log2.v8f64", fn(t_v8f64) -> t_v8f64);
659 ifn!("llvm.fma.f32", fn(t_f32, t_f32, t_f32) -> t_f32);
660 ifn!("llvm.fma.v2f32", fn(t_v2f32, t_v2f32, t_v2f32) -> t_v2f32);
661 ifn!("llvm.fma.v4f32", fn(t_v4f32, t_v4f32, t_v4f32) -> t_v4f32);
662 ifn!("llvm.fma.v8f32", fn(t_v8f32, t_v8f32, t_v8f32) -> t_v8f32);
663 ifn!("llvm.fma.v16f32", fn(t_v16f32, t_v16f32, t_v16f32) -> t_v16f32);
664 ifn!("llvm.fma.f64", fn(t_f64, t_f64, t_f64) -> t_f64);
665 ifn!("llvm.fma.v2f64", fn(t_v2f64, t_v2f64, t_v2f64) -> t_v2f64);
666 ifn!("llvm.fma.v4f64", fn(t_v4f64, t_v4f64, t_v4f64) -> t_v4f64);
667 ifn!("llvm.fma.v8f64", fn(t_v8f64, t_v8f64, t_v8f64) -> t_v8f64);
669 ifn!("llvm.fabs.f32", fn(t_f32) -> t_f32);
670 ifn!("llvm.fabs.v2f32", fn(t_v2f32) -> t_v2f32);
671 ifn!("llvm.fabs.v4f32", fn(t_v4f32) -> t_v4f32);
672 ifn!("llvm.fabs.v8f32", fn(t_v8f32) -> t_v8f32);
673 ifn!("llvm.fabs.v16f32", fn(t_v16f32) -> t_v16f32);
674 ifn!("llvm.fabs.f64", fn(t_f64) -> t_f64);
675 ifn!("llvm.fabs.v2f64", fn(t_v2f64) -> t_v2f64);
676 ifn!("llvm.fabs.v4f64", fn(t_v4f64) -> t_v4f64);
677 ifn!("llvm.fabs.v8f64", fn(t_v8f64) -> t_v8f64);
679 ifn!("llvm.minnum.f32", fn(t_f32, t_f32) -> t_f32);
680 ifn!("llvm.minnum.f64", fn(t_f64, t_f64) -> t_f64);
681 ifn!("llvm.maxnum.f32", fn(t_f32, t_f32) -> t_f32);
682 ifn!("llvm.maxnum.f64", fn(t_f64, t_f64) -> t_f64);
684 ifn!("llvm.floor.f32", fn(t_f32) -> t_f32);
685 ifn!("llvm.floor.v2f32", fn(t_v2f32) -> t_v2f32);
686 ifn!("llvm.floor.v4f32", fn(t_v4f32) -> t_v4f32);
687 ifn!("llvm.floor.v8f32", fn(t_v8f32) -> t_v8f32);
688 ifn!("llvm.floor.v16f32", fn(t_v16f32) -> t_v16f32);
689 ifn!("llvm.floor.f64", fn(t_f64) -> t_f64);
690 ifn!("llvm.floor.v2f64", fn(t_v2f64) -> t_v2f64);
691 ifn!("llvm.floor.v4f64", fn(t_v4f64) -> t_v4f64);
692 ifn!("llvm.floor.v8f64", fn(t_v8f64) -> t_v8f64);
694 ifn!("llvm.ceil.f32", fn(t_f32) -> t_f32);
695 ifn!("llvm.ceil.v2f32", fn(t_v2f32) -> t_v2f32);
696 ifn!("llvm.ceil.v4f32", fn(t_v4f32) -> t_v4f32);
697 ifn!("llvm.ceil.v8f32", fn(t_v8f32) -> t_v8f32);
698 ifn!("llvm.ceil.v16f32", fn(t_v16f32) -> t_v16f32);
699 ifn!("llvm.ceil.f64", fn(t_f64) -> t_f64);
700 ifn!("llvm.ceil.v2f64", fn(t_v2f64) -> t_v2f64);
701 ifn!("llvm.ceil.v4f64", fn(t_v4f64) -> t_v4f64);
702 ifn!("llvm.ceil.v8f64", fn(t_v8f64) -> t_v8f64);
704 ifn!("llvm.trunc.f32", fn(t_f32) -> t_f32);
705 ifn!("llvm.trunc.f64", fn(t_f64) -> t_f64);
707 ifn!("llvm.copysign.f32", fn(t_f32, t_f32) -> t_f32);
708 ifn!("llvm.copysign.f64", fn(t_f64, t_f64) -> t_f64);
709 ifn!("llvm.round.f32", fn(t_f32) -> t_f32);
710 ifn!("llvm.round.f64", fn(t_f64) -> t_f64);
712 ifn!("llvm.rint.f32", fn(t_f32) -> t_f32);
713 ifn!("llvm.rint.f64", fn(t_f64) -> t_f64);
714 ifn!("llvm.nearbyint.f32", fn(t_f32) -> t_f32);
715 ifn!("llvm.nearbyint.f64", fn(t_f64) -> t_f64);
717 ifn!("llvm.ctpop.i8", fn(t_i8) -> t_i8);
718 ifn!("llvm.ctpop.i16", fn(t_i16) -> t_i16);
719 ifn!("llvm.ctpop.i32", fn(t_i32) -> t_i32);
720 ifn!("llvm.ctpop.i64", fn(t_i64) -> t_i64);
721 ifn!("llvm.ctpop.i128", fn(t_i128) -> t_i128);
723 ifn!("llvm.ctlz.i8", fn(t_i8 , i1) -> t_i8);
724 ifn!("llvm.ctlz.i16", fn(t_i16, i1) -> t_i16);
725 ifn!("llvm.ctlz.i32", fn(t_i32, i1) -> t_i32);
726 ifn!("llvm.ctlz.i64", fn(t_i64, i1) -> t_i64);
727 ifn!("llvm.ctlz.i128", fn(t_i128, i1) -> t_i128);
729 ifn!("llvm.cttz.i8", fn(t_i8 , i1) -> t_i8);
730 ifn!("llvm.cttz.i16", fn(t_i16, i1) -> t_i16);
731 ifn!("llvm.cttz.i32", fn(t_i32, i1) -> t_i32);
732 ifn!("llvm.cttz.i64", fn(t_i64, i1) -> t_i64);
733 ifn!("llvm.cttz.i128", fn(t_i128, i1) -> t_i128);
735 ifn!("llvm.bswap.i16", fn(t_i16) -> t_i16);
736 ifn!("llvm.bswap.i32", fn(t_i32) -> t_i32);
737 ifn!("llvm.bswap.i64", fn(t_i64) -> t_i64);
738 ifn!("llvm.bswap.i128", fn(t_i128) -> t_i128);
740 ifn!("llvm.bitreverse.i8", fn(t_i8) -> t_i8);
741 ifn!("llvm.bitreverse.i16", fn(t_i16) -> t_i16);
742 ifn!("llvm.bitreverse.i32", fn(t_i32) -> t_i32);
743 ifn!("llvm.bitreverse.i64", fn(t_i64) -> t_i64);
744 ifn!("llvm.bitreverse.i128", fn(t_i128) -> t_i128);
746 ifn!("llvm.fshl.i8", fn(t_i8, t_i8, t_i8) -> t_i8);
747 ifn!("llvm.fshl.i16", fn(t_i16, t_i16, t_i16) -> t_i16);
748 ifn!("llvm.fshl.i32", fn(t_i32, t_i32, t_i32) -> t_i32);
749 ifn!("llvm.fshl.i64", fn(t_i64, t_i64, t_i64) -> t_i64);
750 ifn!("llvm.fshl.i128", fn(t_i128, t_i128, t_i128) -> t_i128);
752 ifn!("llvm.fshr.i8", fn(t_i8, t_i8, t_i8) -> t_i8);
753 ifn!("llvm.fshr.i16", fn(t_i16, t_i16, t_i16) -> t_i16);
754 ifn!("llvm.fshr.i32", fn(t_i32, t_i32, t_i32) -> t_i32);
755 ifn!("llvm.fshr.i64", fn(t_i64, t_i64, t_i64) -> t_i64);
756 ifn!("llvm.fshr.i128", fn(t_i128, t_i128, t_i128) -> t_i128);
758 ifn!("llvm.sadd.with.overflow.i8", fn(t_i8, t_i8) -> mk_struct!{t_i8, i1});
759 ifn!("llvm.sadd.with.overflow.i16", fn(t_i16, t_i16) -> mk_struct!{t_i16, i1});
760 ifn!("llvm.sadd.with.overflow.i32", fn(t_i32, t_i32) -> mk_struct!{t_i32, i1});
761 ifn!("llvm.sadd.with.overflow.i64", fn(t_i64, t_i64) -> mk_struct!{t_i64, i1});
762 ifn!("llvm.sadd.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct!{t_i128, i1});
764 ifn!("llvm.uadd.with.overflow.i8", fn(t_i8, t_i8) -> mk_struct!{t_i8, i1});
765 ifn!("llvm.uadd.with.overflow.i16", fn(t_i16, t_i16) -> mk_struct!{t_i16, i1});
766 ifn!("llvm.uadd.with.overflow.i32", fn(t_i32, t_i32) -> mk_struct!{t_i32, i1});
767 ifn!("llvm.uadd.with.overflow.i64", fn(t_i64, t_i64) -> mk_struct!{t_i64, i1});
768 ifn!("llvm.uadd.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct!{t_i128, i1});
770 ifn!("llvm.ssub.with.overflow.i8", fn(t_i8, t_i8) -> mk_struct!{t_i8, i1});
771 ifn!("llvm.ssub.with.overflow.i16", fn(t_i16, t_i16) -> mk_struct!{t_i16, i1});
772 ifn!("llvm.ssub.with.overflow.i32", fn(t_i32, t_i32) -> mk_struct!{t_i32, i1});
773 ifn!("llvm.ssub.with.overflow.i64", fn(t_i64, t_i64) -> mk_struct!{t_i64, i1});
774 ifn!("llvm.ssub.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct!{t_i128, i1});
776 ifn!("llvm.usub.with.overflow.i8", fn(t_i8, t_i8) -> mk_struct!{t_i8, i1});
777 ifn!("llvm.usub.with.overflow.i16", fn(t_i16, t_i16) -> mk_struct!{t_i16, i1});
778 ifn!("llvm.usub.with.overflow.i32", fn(t_i32, t_i32) -> mk_struct!{t_i32, i1});
779 ifn!("llvm.usub.with.overflow.i64", fn(t_i64, t_i64) -> mk_struct!{t_i64, i1});
780 ifn!("llvm.usub.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct!{t_i128, i1});
782 ifn!("llvm.smul.with.overflow.i8", fn(t_i8, t_i8) -> mk_struct!{t_i8, i1});
783 ifn!("llvm.smul.with.overflow.i16", fn(t_i16, t_i16) -> mk_struct!{t_i16, i1});
784 ifn!("llvm.smul.with.overflow.i32", fn(t_i32, t_i32) -> mk_struct!{t_i32, i1});
785 ifn!("llvm.smul.with.overflow.i64", fn(t_i64, t_i64) -> mk_struct!{t_i64, i1});
786 ifn!("llvm.smul.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct!{t_i128, i1});
788 ifn!("llvm.umul.with.overflow.i8", fn(t_i8, t_i8) -> mk_struct!{t_i8, i1});
789 ifn!("llvm.umul.with.overflow.i16", fn(t_i16, t_i16) -> mk_struct!{t_i16, i1});
790 ifn!("llvm.umul.with.overflow.i32", fn(t_i32, t_i32) -> mk_struct!{t_i32, i1});
791 ifn!("llvm.umul.with.overflow.i64", fn(t_i64, t_i64) -> mk_struct!{t_i64, i1});
792 ifn!("llvm.umul.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct!{t_i128, i1});
794 ifn!("llvm.sadd.sat.i8", fn(t_i8, t_i8) -> t_i8);
795 ifn!("llvm.sadd.sat.i16", fn(t_i16, t_i16) -> t_i16);
796 ifn!("llvm.sadd.sat.i32", fn(t_i32, t_i32) -> t_i32);
797 ifn!("llvm.sadd.sat.i64", fn(t_i64, t_i64) -> t_i64);
798 ifn!("llvm.sadd.sat.i128", fn(t_i128, t_i128) -> t_i128);
800 ifn!("llvm.uadd.sat.i8", fn(t_i8, t_i8) -> t_i8);
801 ifn!("llvm.uadd.sat.i16", fn(t_i16, t_i16) -> t_i16);
802 ifn!("llvm.uadd.sat.i32", fn(t_i32, t_i32) -> t_i32);
803 ifn!("llvm.uadd.sat.i64", fn(t_i64, t_i64) -> t_i64);
804 ifn!("llvm.uadd.sat.i128", fn(t_i128, t_i128) -> t_i128);
806 ifn!("llvm.ssub.sat.i8", fn(t_i8, t_i8) -> t_i8);
807 ifn!("llvm.ssub.sat.i16", fn(t_i16, t_i16) -> t_i16);
808 ifn!("llvm.ssub.sat.i32", fn(t_i32, t_i32) -> t_i32);
809 ifn!("llvm.ssub.sat.i64", fn(t_i64, t_i64) -> t_i64);
810 ifn!("llvm.ssub.sat.i128", fn(t_i128, t_i128) -> t_i128);
812 ifn!("llvm.usub.sat.i8", fn(t_i8, t_i8) -> t_i8);
813 ifn!("llvm.usub.sat.i16", fn(t_i16, t_i16) -> t_i16);
814 ifn!("llvm.usub.sat.i32", fn(t_i32, t_i32) -> t_i32);
815 ifn!("llvm.usub.sat.i64", fn(t_i64, t_i64) -> t_i64);
816 ifn!("llvm.usub.sat.i128", fn(t_i128, t_i128) -> t_i128);
818 ifn!("llvm.lifetime.start", fn(t_i64,i8p) -> void);
819 ifn!("llvm.lifetime.end", fn(t_i64, i8p) -> void);
821 ifn!("llvm.expect.i1", fn(i1, i1) -> i1);
822 ifn!("llvm.eh.typeid.for", fn(i8p) -> t_i32);
823 ifn!("llvm.localescape", fn(...) -> void);
824 ifn!("llvm.localrecover", fn(i8p, i8p, t_i32) -> i8p);
825 ifn!("llvm.x86.seh.recoverfp", fn(i8p, i8p) -> i8p);
827 ifn!("llvm.assume", fn(i1) -> void);
828 ifn!("llvm.prefetch", fn(i8p, t_i32, t_i32, t_i32) -> void);
830 // variadic intrinsics
831 ifn!("llvm.va_start", fn(i8p) -> void);
832 ifn!("llvm.va_end", fn(i8p) -> void);
833 ifn!("llvm.va_copy", fn(i8p, i8p) -> void);
835 if self.sess().opts.debuginfo != DebugInfo::None {
836 ifn!("llvm.dbg.declare", fn(self.type_metadata(), self.type_metadata()) -> void);
837 ifn!("llvm.dbg.value", fn(self.type_metadata(), t_i64, self.type_metadata()) -> void);
843 impl<'b, 'tcx> CodegenCx<'b, 'tcx> {
844 /// Generates a new symbol name with the given prefix. This symbol name must
845 /// only be used for definitions with `internal` or `private` linkage.
846 pub fn generate_local_symbol_name(&self, prefix: &str) -> String {
847 let idx = self.local_gen_sym_counter.get();
848 self.local_gen_sym_counter.set(idx + 1);
849 // Include a '.' character, so there can be no accidental conflicts with
850 // user defined names
851 let mut name = String::with_capacity(prefix.len() + 6);
852 name.push_str(prefix);
854 base_n::push_str(idx as u128, base_n::ALPHANUMERIC_ONLY, &mut name);
859 impl ty::layout::HasDataLayout for CodegenCx<'ll, 'tcx> {
860 fn data_layout(&self) -> &ty::layout::TargetDataLayout {
861 &self.tcx.data_layout
865 impl HasTargetSpec for CodegenCx<'ll, 'tcx> {
866 fn target_spec(&self) -> &Target {
867 &self.tcx.sess.target.target
871 impl ty::layout::HasTyCtxt<'tcx> for CodegenCx<'ll, 'tcx> {
872 fn tcx(&self) -> TyCtxt<'tcx> {
877 impl LayoutOf for CodegenCx<'ll, 'tcx> {
879 type TyLayout = TyLayout<'tcx>;
881 fn layout_of(&self, ty: Ty<'tcx>) -> Self::TyLayout {
882 self.spanned_layout_of(ty, DUMMY_SP)
885 fn spanned_layout_of(&self, ty: Ty<'tcx>, span: Span) -> Self::TyLayout {
886 self.tcx.layout_of(ty::ParamEnv::reveal_all().and(ty))
887 .unwrap_or_else(|e| if let LayoutError::SizeOverflow(_) = e {
888 self.sess().span_fatal(span, &e.to_string())
890 bug!("failed to get layout for `{}`: {}", ty, e)
895 impl<'tcx, 'll> HasParamEnv<'tcx> for CodegenCx<'ll, 'tcx> {
896 fn param_env(&self) -> ty::ParamEnv<'tcx> {
897 ty::ParamEnv::reveal_all()