6 use crate::value::Value;
7 use rustc::dep_graph::DepGraphSafe;
9 use crate::type_::Type;
10 use rustc_codegen_ssa::traits::*;
12 use crate::callee::get_fn;
14 use rustc::mir::mono::CodegenUnit;
15 use rustc::session::config::{self, DebugInfo};
16 use rustc::session::Session;
17 use rustc::ty::layout::{
18 FnAbiExt, HasParamEnv, LayoutError, LayoutOf, PointeeInfo, Size, TyLayout, VariantIdx,
20 use rustc::ty::{self, Instance, Ty, TyCtxt};
21 use rustc_codegen_ssa::base::wants_msvc_seh;
22 use rustc_data_structures::base_n;
23 use rustc_data_structures::const_cstr;
24 use rustc_data_structures::fx::FxHashMap;
25 use rustc_data_structures::small_c_str::SmallCStr;
26 use rustc_hir::Unsafety;
27 use rustc_target::spec::{HasTargetSpec, Target};
30 use rustc_span::source_map::{Span, DUMMY_SP};
31 use rustc_span::symbol::Symbol;
32 use std::cell::{Cell, RefCell};
38 /// There is one `CodegenCx` per compilation unit. Each one has its own LLVM
39 /// `llvm::Context` so that several compilation units may be optimized in parallel.
40 /// All other LLVM data structures in the `CodegenCx` are tied to that `llvm::Context`.
41 pub struct CodegenCx<'ll, 'tcx> {
42 pub tcx: TyCtxt<'tcx>,
43 pub check_overflow: bool,
44 pub use_dll_storage_attrs: bool,
45 pub tls_model: llvm::ThreadLocalMode,
47 pub llmod: &'ll llvm::Module,
48 pub llcx: &'ll llvm::Context,
49 pub codegen_unit: Arc<CodegenUnit<'tcx>>,
51 /// Cache instances of monomorphic and polymorphic items
52 pub instances: RefCell<FxHashMap<Instance<'tcx>, &'ll Value>>,
53 /// Cache generated vtables
55 RefCell<FxHashMap<(Ty<'tcx>, Option<ty::PolyExistentialTraitRef<'tcx>>), &'ll Value>>,
56 /// Cache of constant strings,
57 pub const_cstr_cache: RefCell<FxHashMap<Symbol, &'ll Value>>,
59 /// Reverse-direction for const ptrs cast from globals.
60 /// Key is a Value holding a *T,
61 /// Val is a Value holding a *[T].
63 /// Needed because LLVM loses pointer->pointee association
64 /// when we ptrcast, and we have to ptrcast during codegen
65 /// of a [T] const because we form a slice, a (*T,usize) pair, not
66 /// a pointer to an LLVM array type. Similar for trait objects.
67 pub const_unsized: RefCell<FxHashMap<&'ll Value, &'ll Value>>,
69 /// Cache of emitted const globals (value -> global)
70 pub const_globals: RefCell<FxHashMap<&'ll Value, &'ll Value>>,
72 /// List of globals for static variables which need to be passed to the
73 /// LLVM function ReplaceAllUsesWith (RAUW) when codegen is complete.
74 /// (We have to make sure we don't invalidate any Values referring
76 pub statics_to_rauw: RefCell<Vec<(&'ll Value, &'ll Value)>>,
78 /// Statics that will be placed in the llvm.used variable
79 /// See <http://llvm.org/docs/LangRef.html#the-llvm-used-global-variable> for details
80 pub used_statics: RefCell<Vec<&'ll Value>>,
82 pub lltypes: RefCell<FxHashMap<(Ty<'tcx>, Option<VariantIdx>), &'ll Type>>,
83 pub scalar_lltypes: RefCell<FxHashMap<Ty<'tcx>, &'ll Type>>,
84 pub pointee_infos: RefCell<FxHashMap<(Ty<'tcx>, Size), Option<PointeeInfo>>>,
85 pub isize_ty: &'ll Type,
87 pub dbg_cx: Option<debuginfo::CrateDebugContext<'ll, 'tcx>>,
89 eh_personality: Cell<Option<&'ll Value>>,
90 eh_unwind_resume: Cell<Option<&'ll Value>>,
91 pub rust_try_fn: Cell<Option<&'ll Value>>,
93 intrinsics: RefCell<FxHashMap<&'static str, &'ll Value>>,
95 /// A counter that is used for generating local symbol names
96 local_gen_sym_counter: Cell<usize>,
99 impl<'ll, 'tcx> DepGraphSafe for CodegenCx<'ll, 'tcx> {}
101 pub fn get_reloc_model(sess: &Session) -> llvm::RelocMode {
102 let reloc_model_arg = match sess.opts.cg.relocation_model {
103 Some(ref s) => &s[..],
104 None => &sess.target.target.options.relocation_model[..],
107 match crate::back::write::RELOC_MODEL_ARGS.iter().find(|&&arg| arg.0 == reloc_model_arg) {
110 sess.err(&format!("{:?} is not a valid relocation mode", reloc_model_arg));
111 sess.abort_if_errors();
117 fn get_tls_model(sess: &Session) -> llvm::ThreadLocalMode {
118 let tls_model_arg = match sess.opts.debugging_opts.tls_model {
119 Some(ref s) => &s[..],
120 None => &sess.target.target.options.tls_model[..],
123 match crate::back::write::TLS_MODEL_ARGS.iter().find(|&&arg| arg.0 == tls_model_arg) {
126 sess.err(&format!("{:?} is not a valid TLS model", tls_model_arg));
127 sess.abort_if_errors();
133 fn is_any_library(sess: &Session) -> bool {
134 sess.crate_types.borrow().iter().any(|ty| *ty != config::CrateType::Executable)
137 pub fn is_pie_binary(sess: &Session) -> bool {
138 !is_any_library(sess) && get_reloc_model(sess) == llvm::RelocMode::PIC
141 fn strip_function_ptr_alignment(data_layout: String) -> String {
142 // FIXME: Make this more general.
143 data_layout.replace("-Fi8-", "-")
146 fn strip_x86_address_spaces(data_layout: String) -> String {
147 data_layout.replace("-p270:32:32-p271:32:32-p272:64:64-", "-")
150 pub unsafe fn create_module(
152 llcx: &'ll llvm::Context,
154 ) -> &'ll llvm::Module {
156 let mod_name = SmallCStr::new(mod_name);
157 let llmod = llvm::LLVMModuleCreateWithNameInContext(mod_name.as_ptr(), llcx);
159 let mut target_data_layout = sess.target.target.data_layout.clone();
160 if llvm_util::get_major_version() < 9 {
161 target_data_layout = strip_function_ptr_alignment(target_data_layout);
163 if llvm_util::get_major_version() < 10 {
164 if sess.target.target.arch == "x86" || sess.target.target.arch == "x86_64" {
165 target_data_layout = strip_x86_address_spaces(target_data_layout);
169 // Ensure the data-layout values hardcoded remain the defaults.
170 if sess.target.target.options.is_builtin {
171 let tm = crate::back::write::create_informational_target_machine(&tcx.sess, false);
172 llvm::LLVMRustSetDataLayoutFromTargetMachine(llmod, tm);
173 llvm::LLVMRustDisposeTargetMachine(tm);
175 let llvm_data_layout = llvm::LLVMGetDataLayout(llmod);
176 let llvm_data_layout = str::from_utf8(CStr::from_ptr(llvm_data_layout).to_bytes())
178 .expect("got a non-UTF8 data-layout from LLVM");
180 // Unfortunately LLVM target specs change over time, and right now we
181 // don't have proper support to work with any more than one
182 // `data_layout` than the one that is in the rust-lang/rust repo. If
183 // this compiler is configured against a custom LLVM, we may have a
184 // differing data layout, even though we should update our own to use
187 // As an interim hack, if CFG_LLVM_ROOT is not an empty string then we
188 // disable this check entirely as we may be configured with something
189 // that has a different target layout.
191 // Unsure if this will actually cause breakage when rustc is configured
195 let cfg_llvm_root = option_env!("CFG_LLVM_ROOT").unwrap_or("");
196 let custom_llvm_used = cfg_llvm_root.trim() != "";
198 if !custom_llvm_used && target_data_layout != llvm_data_layout {
200 "data-layout for builtin `{}` target, `{}`, \
201 differs from LLVM default, `{}`",
202 sess.target.target.llvm_target,
209 let data_layout = SmallCStr::new(&target_data_layout);
210 llvm::LLVMSetDataLayout(llmod, data_layout.as_ptr());
212 let llvm_target = SmallCStr::new(&sess.target.target.llvm_target);
213 llvm::LLVMRustSetNormalizedTarget(llmod, llvm_target.as_ptr());
215 if get_reloc_model(sess) == llvm::RelocMode::PIC {
216 llvm::LLVMRustSetModulePICLevel(llmod);
219 if is_pie_binary(sess) {
220 llvm::LLVMRustSetModulePIELevel(llmod);
223 // If skipping the PLT is enabled, we need to add some module metadata
224 // to ensure intrinsic calls don't use it.
225 if !sess.needs_plt() {
226 let avoid_plt = "RtLibUseGOT\0".as_ptr().cast();
227 llvm::LLVMRustAddModuleFlag(llmod, avoid_plt, 1);
233 impl<'ll, 'tcx> CodegenCx<'ll, 'tcx> {
236 codegen_unit: Arc<CodegenUnit<'tcx>>,
237 llvm_module: &'ll crate::ModuleLlvm,
239 // An interesting part of Windows which MSVC forces our hand on (and
240 // apparently MinGW didn't) is the usage of `dllimport` and `dllexport`
241 // attributes in LLVM IR as well as native dependencies (in C these
242 // correspond to `__declspec(dllimport)`).
244 // Whenever a dynamic library is built by MSVC it must have its public
245 // interface specified by functions tagged with `dllexport` or otherwise
246 // they're not available to be linked against. This poses a few problems
247 // for the compiler, some of which are somewhat fundamental, but we use
248 // the `use_dll_storage_attrs` variable below to attach the `dllexport`
249 // attribute to all LLVM functions that are exported e.g., they're
250 // already tagged with external linkage). This is suboptimal for a few
253 // * If an object file will never be included in a dynamic library,
254 // there's no need to attach the dllexport attribute. Most object
255 // files in Rust are not destined to become part of a dll as binaries
256 // are statically linked by default.
257 // * If the compiler is emitting both an rlib and a dylib, the same
258 // source object file is currently used but with MSVC this may be less
259 // feasible. The compiler may be able to get around this, but it may
260 // involve some invasive changes to deal with this.
262 // The flipside of this situation is that whenever you link to a dll and
263 // you import a function from it, the import should be tagged with
264 // `dllimport`. At this time, however, the compiler does not emit
265 // `dllimport` for any declarations other than constants (where it is
266 // required), which is again suboptimal for even more reasons!
268 // * Calling a function imported from another dll without using
269 // `dllimport` causes the linker/compiler to have extra overhead (one
270 // `jmp` instruction on x86) when calling the function.
271 // * The same object file may be used in different circumstances, so a
272 // function may be imported from a dll if the object is linked into a
273 // dll, but it may be just linked against if linked into an rlib.
274 // * The compiler has no knowledge about whether native functions should
275 // be tagged dllimport or not.
277 // For now the compiler takes the perf hit (I do not have any numbers to
278 // this effect) by marking very little as `dllimport` and praying the
279 // linker will take care of everything. Fixing this problem will likely
280 // require adding a few attributes to Rust itself (feature gated at the
281 // start) and then strongly recommending static linkage on MSVC!
282 let use_dll_storage_attrs = tcx.sess.target.target.options.is_like_msvc;
284 let check_overflow = tcx.sess.overflow_checks();
286 let tls_model = get_tls_model(&tcx.sess);
288 let (llcx, llmod) = (&*llvm_module.llcx, llvm_module.llmod());
290 let dbg_cx = if tcx.sess.opts.debuginfo != DebugInfo::None {
291 let dctx = debuginfo::CrateDebugContext::new(llmod);
292 debuginfo::metadata::compile_unit_metadata(tcx, &codegen_unit.name().as_str(), &dctx);
298 let isize_ty = Type::ix_llcx(llcx, tcx.data_layout.pointer_size.bits());
303 use_dll_storage_attrs,
308 instances: Default::default(),
309 vtables: Default::default(),
310 const_cstr_cache: Default::default(),
311 const_unsized: Default::default(),
312 const_globals: Default::default(),
313 statics_to_rauw: RefCell::new(Vec::new()),
314 used_statics: RefCell::new(Vec::new()),
315 lltypes: Default::default(),
316 scalar_lltypes: Default::default(),
317 pointee_infos: Default::default(),
320 eh_personality: Cell::new(None),
321 eh_unwind_resume: Cell::new(None),
322 rust_try_fn: Cell::new(None),
323 intrinsics: Default::default(),
324 local_gen_sym_counter: Cell::new(0),
328 crate fn statics_to_rauw(&self) -> &RefCell<Vec<(&'ll Value, &'ll Value)>> {
329 &self.statics_to_rauw
333 impl MiscMethods<'tcx> for CodegenCx<'ll, 'tcx> {
336 ) -> &RefCell<FxHashMap<(Ty<'tcx>, Option<ty::PolyExistentialTraitRef<'tcx>>), &'ll Value>>
341 fn get_fn(&self, instance: Instance<'tcx>) -> &'ll Value {
342 get_fn(self, instance)
345 fn get_fn_addr(&self, instance: Instance<'tcx>) -> &'ll Value {
346 get_fn(self, instance)
349 fn eh_personality(&self) -> &'ll Value {
350 // The exception handling personality function.
352 // If our compilation unit has the `eh_personality` lang item somewhere
353 // within it, then we just need to codegen that. Otherwise, we're
354 // building an rlib which will depend on some upstream implementation of
355 // this function, so we just codegen a generic reference to it. We don't
356 // specify any of the types for the function, we just make it a symbol
357 // that LLVM can later use.
359 // Note that MSVC is a little special here in that we don't use the
360 // `eh_personality` lang item at all. Currently LLVM has support for
361 // both Dwarf and SEH unwind mechanisms for MSVC targets and uses the
362 // *name of the personality function* to decide what kind of unwind side
363 // tables/landing pads to emit. It looks like Dwarf is used by default,
364 // injecting a dependency on the `_Unwind_Resume` symbol for resuming
365 // an "exception", but for MSVC we want to force SEH. This means that we
366 // can't actually have the personality function be our standard
367 // `rust_eh_personality` function, but rather we wired it up to the
368 // CRT's custom personality function, which forces LLVM to consider
369 // landing pads as "landing pads for SEH".
370 if let Some(llpersonality) = self.eh_personality.get() {
371 return llpersonality;
374 let llfn = match tcx.lang_items().eh_personality() {
375 Some(def_id) if !wants_msvc_seh(self.sess()) => self.get_fn_addr(
376 ty::Instance::resolve(
378 ty::ParamEnv::reveal_all(),
380 tcx.intern_substs(&[]),
385 let name = if wants_msvc_seh(self.sess()) {
388 "rust_eh_personality"
390 let fty = self.type_variadic_func(&[], self.type_i32());
391 self.declare_cfn(name, fty)
394 attributes::apply_target_cpu_attr(self, llfn);
395 self.eh_personality.set(Some(llfn));
399 // Returns a Value of the "eh_unwind_resume" lang item if one is defined,
400 // otherwise declares it as an external function.
401 fn eh_unwind_resume(&self) -> &'ll Value {
402 let unwresume = &self.eh_unwind_resume;
403 if let Some(llfn) = unwresume.get() {
408 assert!(self.sess().target.target.options.custom_unwind_resume);
409 if let Some(def_id) = tcx.lang_items().eh_unwind_resume() {
410 let llfn = self.get_fn_addr(
411 ty::Instance::resolve(
413 ty::ParamEnv::reveal_all(),
415 tcx.intern_substs(&[]),
419 unwresume.set(Some(llfn));
423 let sig = ty::Binder::bind(tcx.mk_fn_sig(
424 iter::once(tcx.mk_mut_ptr(tcx.types.u8)),
431 let fn_abi = FnAbi::of_fn_ptr(self, sig, &[]);
432 let llfn = self.declare_fn("rust_eh_unwind_resume", &fn_abi);
433 attributes::apply_target_cpu_attr(self, llfn);
434 unwresume.set(Some(llfn));
438 fn sess(&self) -> &Session {
442 fn check_overflow(&self) -> bool {
446 fn codegen_unit(&self) -> &Arc<CodegenUnit<'tcx>> {
450 fn used_statics(&self) -> &RefCell<Vec<&'ll Value>> {
454 fn set_frame_pointer_elimination(&self, llfn: &'ll Value) {
455 attributes::set_frame_pointer_elimination(self, llfn)
458 fn apply_target_cpu_attr(&self, llfn: &'ll Value) {
459 attributes::apply_target_cpu_attr(self, llfn)
462 fn create_used_variable(&self) {
463 let name = const_cstr!("llvm.used");
464 let section = const_cstr!("llvm.metadata");
466 self.const_array(&self.type_ptr_to(self.type_i8()), &*self.used_statics.borrow());
469 let g = llvm::LLVMAddGlobal(self.llmod, self.val_ty(array), name.as_ptr());
470 llvm::LLVMSetInitializer(g, array);
471 llvm::LLVMRustSetLinkage(g, llvm::Linkage::AppendingLinkage);
472 llvm::LLVMSetSection(g, section.as_ptr());
477 impl CodegenCx<'b, 'tcx> {
478 crate fn get_intrinsic(&self, key: &str) -> &'b Value {
479 if let Some(v) = self.intrinsics.borrow().get(key).cloned() {
483 self.declare_intrinsic(key).unwrap_or_else(|| bug!("unknown intrinsic '{}'", key))
489 args: Option<&[&'b llvm::Type]>,
491 ) -> &'b llvm::Value {
492 let fn_ty = if let Some(args) = args {
493 self.type_func(args, ret)
495 self.type_variadic_func(&[], ret)
497 let f = self.declare_cfn(name, fn_ty);
498 llvm::SetUnnamedAddr(f, false);
499 self.intrinsics.borrow_mut().insert(name, f);
503 fn declare_intrinsic(&self, key: &str) -> Option<&'b Value> {
505 ($name:expr, fn() -> $ret:expr) => (
507 return Some(self.insert_intrinsic($name, Some(&[]), $ret));
510 ($name:expr, fn(...) -> $ret:expr) => (
512 return Some(self.insert_intrinsic($name, None, $ret));
515 ($name:expr, fn($($arg:expr),*) -> $ret:expr) => (
517 return Some(self.insert_intrinsic($name, Some(&[$($arg),*]), $ret));
521 macro_rules! mk_struct {
522 ($($field_ty:expr),*) => (self.type_struct( &[$($field_ty),*], false))
525 let i8p = self.type_i8p();
526 let void = self.type_void();
527 let i1 = self.type_i1();
528 let t_i8 = self.type_i8();
529 let t_i16 = self.type_i16();
530 let t_i32 = self.type_i32();
531 let t_i64 = self.type_i64();
532 let t_i128 = self.type_i128();
533 let t_f32 = self.type_f32();
534 let t_f64 = self.type_f64();
536 macro_rules! vector_types {
537 ($id_out:ident: $elem_ty:ident, $len:expr) => {
538 let $id_out = self.type_vector($elem_ty, $len);
540 ($($id_out:ident: $elem_ty:ident, $len:expr;)*) => {
541 $(vector_types!($id_out: $elem_ty, $len);)*
555 ifn!("llvm.memset.p0i8.i16", fn(i8p, t_i8, t_i16, t_i32, i1) -> void);
556 ifn!("llvm.memset.p0i8.i32", fn(i8p, t_i8, t_i32, t_i32, i1) -> void);
557 ifn!("llvm.memset.p0i8.i64", fn(i8p, t_i8, t_i64, t_i32, i1) -> void);
559 ifn!("llvm.trap", fn() -> void);
560 ifn!("llvm.debugtrap", fn() -> void);
561 ifn!("llvm.frameaddress", fn(t_i32) -> i8p);
562 ifn!("llvm.sideeffect", fn() -> void);
564 ifn!("llvm.powi.f32", fn(t_f32, t_i32) -> t_f32);
565 ifn!("llvm.powi.v2f32", fn(t_v2f32, t_i32) -> t_v2f32);
566 ifn!("llvm.powi.v4f32", fn(t_v4f32, t_i32) -> t_v4f32);
567 ifn!("llvm.powi.v8f32", fn(t_v8f32, t_i32) -> t_v8f32);
568 ifn!("llvm.powi.v16f32", fn(t_v16f32, t_i32) -> t_v16f32);
569 ifn!("llvm.powi.f64", fn(t_f64, t_i32) -> t_f64);
570 ifn!("llvm.powi.v2f64", fn(t_v2f64, t_i32) -> t_v2f64);
571 ifn!("llvm.powi.v4f64", fn(t_v4f64, t_i32) -> t_v4f64);
572 ifn!("llvm.powi.v8f64", fn(t_v8f64, t_i32) -> t_v8f64);
574 ifn!("llvm.pow.f32", fn(t_f32, t_f32) -> t_f32);
575 ifn!("llvm.pow.v2f32", fn(t_v2f32, t_v2f32) -> t_v2f32);
576 ifn!("llvm.pow.v4f32", fn(t_v4f32, t_v4f32) -> t_v4f32);
577 ifn!("llvm.pow.v8f32", fn(t_v8f32, t_v8f32) -> t_v8f32);
578 ifn!("llvm.pow.v16f32", fn(t_v16f32, t_v16f32) -> t_v16f32);
579 ifn!("llvm.pow.f64", fn(t_f64, t_f64) -> t_f64);
580 ifn!("llvm.pow.v2f64", fn(t_v2f64, t_v2f64) -> t_v2f64);
581 ifn!("llvm.pow.v4f64", fn(t_v4f64, t_v4f64) -> t_v4f64);
582 ifn!("llvm.pow.v8f64", fn(t_v8f64, t_v8f64) -> t_v8f64);
584 ifn!("llvm.sqrt.f32", fn(t_f32) -> t_f32);
585 ifn!("llvm.sqrt.v2f32", fn(t_v2f32) -> t_v2f32);
586 ifn!("llvm.sqrt.v4f32", fn(t_v4f32) -> t_v4f32);
587 ifn!("llvm.sqrt.v8f32", fn(t_v8f32) -> t_v8f32);
588 ifn!("llvm.sqrt.v16f32", fn(t_v16f32) -> t_v16f32);
589 ifn!("llvm.sqrt.f64", fn(t_f64) -> t_f64);
590 ifn!("llvm.sqrt.v2f64", fn(t_v2f64) -> t_v2f64);
591 ifn!("llvm.sqrt.v4f64", fn(t_v4f64) -> t_v4f64);
592 ifn!("llvm.sqrt.v8f64", fn(t_v8f64) -> t_v8f64);
594 ifn!("llvm.sin.f32", fn(t_f32) -> t_f32);
595 ifn!("llvm.sin.v2f32", fn(t_v2f32) -> t_v2f32);
596 ifn!("llvm.sin.v4f32", fn(t_v4f32) -> t_v4f32);
597 ifn!("llvm.sin.v8f32", fn(t_v8f32) -> t_v8f32);
598 ifn!("llvm.sin.v16f32", fn(t_v16f32) -> t_v16f32);
599 ifn!("llvm.sin.f64", fn(t_f64) -> t_f64);
600 ifn!("llvm.sin.v2f64", fn(t_v2f64) -> t_v2f64);
601 ifn!("llvm.sin.v4f64", fn(t_v4f64) -> t_v4f64);
602 ifn!("llvm.sin.v8f64", fn(t_v8f64) -> t_v8f64);
604 ifn!("llvm.cos.f32", fn(t_f32) -> t_f32);
605 ifn!("llvm.cos.v2f32", fn(t_v2f32) -> t_v2f32);
606 ifn!("llvm.cos.v4f32", fn(t_v4f32) -> t_v4f32);
607 ifn!("llvm.cos.v8f32", fn(t_v8f32) -> t_v8f32);
608 ifn!("llvm.cos.v16f32", fn(t_v16f32) -> t_v16f32);
609 ifn!("llvm.cos.f64", fn(t_f64) -> t_f64);
610 ifn!("llvm.cos.v2f64", fn(t_v2f64) -> t_v2f64);
611 ifn!("llvm.cos.v4f64", fn(t_v4f64) -> t_v4f64);
612 ifn!("llvm.cos.v8f64", fn(t_v8f64) -> t_v8f64);
614 ifn!("llvm.exp.f32", fn(t_f32) -> t_f32);
615 ifn!("llvm.exp.v2f32", fn(t_v2f32) -> t_v2f32);
616 ifn!("llvm.exp.v4f32", fn(t_v4f32) -> t_v4f32);
617 ifn!("llvm.exp.v8f32", fn(t_v8f32) -> t_v8f32);
618 ifn!("llvm.exp.v16f32", fn(t_v16f32) -> t_v16f32);
619 ifn!("llvm.exp.f64", fn(t_f64) -> t_f64);
620 ifn!("llvm.exp.v2f64", fn(t_v2f64) -> t_v2f64);
621 ifn!("llvm.exp.v4f64", fn(t_v4f64) -> t_v4f64);
622 ifn!("llvm.exp.v8f64", fn(t_v8f64) -> t_v8f64);
624 ifn!("llvm.exp2.f32", fn(t_f32) -> t_f32);
625 ifn!("llvm.exp2.v2f32", fn(t_v2f32) -> t_v2f32);
626 ifn!("llvm.exp2.v4f32", fn(t_v4f32) -> t_v4f32);
627 ifn!("llvm.exp2.v8f32", fn(t_v8f32) -> t_v8f32);
628 ifn!("llvm.exp2.v16f32", fn(t_v16f32) -> t_v16f32);
629 ifn!("llvm.exp2.f64", fn(t_f64) -> t_f64);
630 ifn!("llvm.exp2.v2f64", fn(t_v2f64) -> t_v2f64);
631 ifn!("llvm.exp2.v4f64", fn(t_v4f64) -> t_v4f64);
632 ifn!("llvm.exp2.v8f64", fn(t_v8f64) -> t_v8f64);
634 ifn!("llvm.log.f32", fn(t_f32) -> t_f32);
635 ifn!("llvm.log.v2f32", fn(t_v2f32) -> t_v2f32);
636 ifn!("llvm.log.v4f32", fn(t_v4f32) -> t_v4f32);
637 ifn!("llvm.log.v8f32", fn(t_v8f32) -> t_v8f32);
638 ifn!("llvm.log.v16f32", fn(t_v16f32) -> t_v16f32);
639 ifn!("llvm.log.f64", fn(t_f64) -> t_f64);
640 ifn!("llvm.log.v2f64", fn(t_v2f64) -> t_v2f64);
641 ifn!("llvm.log.v4f64", fn(t_v4f64) -> t_v4f64);
642 ifn!("llvm.log.v8f64", fn(t_v8f64) -> t_v8f64);
644 ifn!("llvm.log10.f32", fn(t_f32) -> t_f32);
645 ifn!("llvm.log10.v2f32", fn(t_v2f32) -> t_v2f32);
646 ifn!("llvm.log10.v4f32", fn(t_v4f32) -> t_v4f32);
647 ifn!("llvm.log10.v8f32", fn(t_v8f32) -> t_v8f32);
648 ifn!("llvm.log10.v16f32", fn(t_v16f32) -> t_v16f32);
649 ifn!("llvm.log10.f64", fn(t_f64) -> t_f64);
650 ifn!("llvm.log10.v2f64", fn(t_v2f64) -> t_v2f64);
651 ifn!("llvm.log10.v4f64", fn(t_v4f64) -> t_v4f64);
652 ifn!("llvm.log10.v8f64", fn(t_v8f64) -> t_v8f64);
654 ifn!("llvm.log2.f32", fn(t_f32) -> t_f32);
655 ifn!("llvm.log2.v2f32", fn(t_v2f32) -> t_v2f32);
656 ifn!("llvm.log2.v4f32", fn(t_v4f32) -> t_v4f32);
657 ifn!("llvm.log2.v8f32", fn(t_v8f32) -> t_v8f32);
658 ifn!("llvm.log2.v16f32", fn(t_v16f32) -> t_v16f32);
659 ifn!("llvm.log2.f64", fn(t_f64) -> t_f64);
660 ifn!("llvm.log2.v2f64", fn(t_v2f64) -> t_v2f64);
661 ifn!("llvm.log2.v4f64", fn(t_v4f64) -> t_v4f64);
662 ifn!("llvm.log2.v8f64", fn(t_v8f64) -> t_v8f64);
664 ifn!("llvm.fma.f32", fn(t_f32, t_f32, t_f32) -> t_f32);
665 ifn!("llvm.fma.v2f32", fn(t_v2f32, t_v2f32, t_v2f32) -> t_v2f32);
666 ifn!("llvm.fma.v4f32", fn(t_v4f32, t_v4f32, t_v4f32) -> t_v4f32);
667 ifn!("llvm.fma.v8f32", fn(t_v8f32, t_v8f32, t_v8f32) -> t_v8f32);
668 ifn!("llvm.fma.v16f32", fn(t_v16f32, t_v16f32, t_v16f32) -> t_v16f32);
669 ifn!("llvm.fma.f64", fn(t_f64, t_f64, t_f64) -> t_f64);
670 ifn!("llvm.fma.v2f64", fn(t_v2f64, t_v2f64, t_v2f64) -> t_v2f64);
671 ifn!("llvm.fma.v4f64", fn(t_v4f64, t_v4f64, t_v4f64) -> t_v4f64);
672 ifn!("llvm.fma.v8f64", fn(t_v8f64, t_v8f64, t_v8f64) -> t_v8f64);
674 ifn!("llvm.fabs.f32", fn(t_f32) -> t_f32);
675 ifn!("llvm.fabs.v2f32", fn(t_v2f32) -> t_v2f32);
676 ifn!("llvm.fabs.v4f32", fn(t_v4f32) -> t_v4f32);
677 ifn!("llvm.fabs.v8f32", fn(t_v8f32) -> t_v8f32);
678 ifn!("llvm.fabs.v16f32", fn(t_v16f32) -> t_v16f32);
679 ifn!("llvm.fabs.f64", fn(t_f64) -> t_f64);
680 ifn!("llvm.fabs.v2f64", fn(t_v2f64) -> t_v2f64);
681 ifn!("llvm.fabs.v4f64", fn(t_v4f64) -> t_v4f64);
682 ifn!("llvm.fabs.v8f64", fn(t_v8f64) -> t_v8f64);
684 ifn!("llvm.minnum.f32", fn(t_f32, t_f32) -> t_f32);
685 ifn!("llvm.minnum.f64", fn(t_f64, t_f64) -> t_f64);
686 ifn!("llvm.maxnum.f32", fn(t_f32, t_f32) -> t_f32);
687 ifn!("llvm.maxnum.f64", fn(t_f64, t_f64) -> t_f64);
689 ifn!("llvm.floor.f32", fn(t_f32) -> t_f32);
690 ifn!("llvm.floor.v2f32", fn(t_v2f32) -> t_v2f32);
691 ifn!("llvm.floor.v4f32", fn(t_v4f32) -> t_v4f32);
692 ifn!("llvm.floor.v8f32", fn(t_v8f32) -> t_v8f32);
693 ifn!("llvm.floor.v16f32", fn(t_v16f32) -> t_v16f32);
694 ifn!("llvm.floor.f64", fn(t_f64) -> t_f64);
695 ifn!("llvm.floor.v2f64", fn(t_v2f64) -> t_v2f64);
696 ifn!("llvm.floor.v4f64", fn(t_v4f64) -> t_v4f64);
697 ifn!("llvm.floor.v8f64", fn(t_v8f64) -> t_v8f64);
699 ifn!("llvm.ceil.f32", fn(t_f32) -> t_f32);
700 ifn!("llvm.ceil.v2f32", fn(t_v2f32) -> t_v2f32);
701 ifn!("llvm.ceil.v4f32", fn(t_v4f32) -> t_v4f32);
702 ifn!("llvm.ceil.v8f32", fn(t_v8f32) -> t_v8f32);
703 ifn!("llvm.ceil.v16f32", fn(t_v16f32) -> t_v16f32);
704 ifn!("llvm.ceil.f64", fn(t_f64) -> t_f64);
705 ifn!("llvm.ceil.v2f64", fn(t_v2f64) -> t_v2f64);
706 ifn!("llvm.ceil.v4f64", fn(t_v4f64) -> t_v4f64);
707 ifn!("llvm.ceil.v8f64", fn(t_v8f64) -> t_v8f64);
709 ifn!("llvm.trunc.f32", fn(t_f32) -> t_f32);
710 ifn!("llvm.trunc.f64", fn(t_f64) -> t_f64);
712 ifn!("llvm.copysign.f32", fn(t_f32, t_f32) -> t_f32);
713 ifn!("llvm.copysign.f64", fn(t_f64, t_f64) -> t_f64);
714 ifn!("llvm.round.f32", fn(t_f32) -> t_f32);
715 ifn!("llvm.round.f64", fn(t_f64) -> t_f64);
717 ifn!("llvm.rint.f32", fn(t_f32) -> t_f32);
718 ifn!("llvm.rint.f64", fn(t_f64) -> t_f64);
719 ifn!("llvm.nearbyint.f32", fn(t_f32) -> t_f32);
720 ifn!("llvm.nearbyint.f64", fn(t_f64) -> t_f64);
722 ifn!("llvm.ctpop.i8", fn(t_i8) -> t_i8);
723 ifn!("llvm.ctpop.i16", fn(t_i16) -> t_i16);
724 ifn!("llvm.ctpop.i32", fn(t_i32) -> t_i32);
725 ifn!("llvm.ctpop.i64", fn(t_i64) -> t_i64);
726 ifn!("llvm.ctpop.i128", fn(t_i128) -> t_i128);
728 ifn!("llvm.ctlz.i8", fn(t_i8, i1) -> t_i8);
729 ifn!("llvm.ctlz.i16", fn(t_i16, i1) -> t_i16);
730 ifn!("llvm.ctlz.i32", fn(t_i32, i1) -> t_i32);
731 ifn!("llvm.ctlz.i64", fn(t_i64, i1) -> t_i64);
732 ifn!("llvm.ctlz.i128", fn(t_i128, i1) -> t_i128);
734 ifn!("llvm.cttz.i8", fn(t_i8, i1) -> t_i8);
735 ifn!("llvm.cttz.i16", fn(t_i16, i1) -> t_i16);
736 ifn!("llvm.cttz.i32", fn(t_i32, i1) -> t_i32);
737 ifn!("llvm.cttz.i64", fn(t_i64, i1) -> t_i64);
738 ifn!("llvm.cttz.i128", fn(t_i128, i1) -> t_i128);
740 ifn!("llvm.bswap.i16", fn(t_i16) -> t_i16);
741 ifn!("llvm.bswap.i32", fn(t_i32) -> t_i32);
742 ifn!("llvm.bswap.i64", fn(t_i64) -> t_i64);
743 ifn!("llvm.bswap.i128", fn(t_i128) -> t_i128);
745 ifn!("llvm.bitreverse.i8", fn(t_i8) -> t_i8);
746 ifn!("llvm.bitreverse.i16", fn(t_i16) -> t_i16);
747 ifn!("llvm.bitreverse.i32", fn(t_i32) -> t_i32);
748 ifn!("llvm.bitreverse.i64", fn(t_i64) -> t_i64);
749 ifn!("llvm.bitreverse.i128", fn(t_i128) -> t_i128);
751 ifn!("llvm.fshl.i8", fn(t_i8, t_i8, t_i8) -> t_i8);
752 ifn!("llvm.fshl.i16", fn(t_i16, t_i16, t_i16) -> t_i16);
753 ifn!("llvm.fshl.i32", fn(t_i32, t_i32, t_i32) -> t_i32);
754 ifn!("llvm.fshl.i64", fn(t_i64, t_i64, t_i64) -> t_i64);
755 ifn!("llvm.fshl.i128", fn(t_i128, t_i128, t_i128) -> t_i128);
757 ifn!("llvm.fshr.i8", fn(t_i8, t_i8, t_i8) -> t_i8);
758 ifn!("llvm.fshr.i16", fn(t_i16, t_i16, t_i16) -> t_i16);
759 ifn!("llvm.fshr.i32", fn(t_i32, t_i32, t_i32) -> t_i32);
760 ifn!("llvm.fshr.i64", fn(t_i64, t_i64, t_i64) -> t_i64);
761 ifn!("llvm.fshr.i128", fn(t_i128, t_i128, t_i128) -> t_i128);
763 ifn!("llvm.sadd.with.overflow.i8", fn(t_i8, t_i8) -> mk_struct! {t_i8, i1});
764 ifn!("llvm.sadd.with.overflow.i16", fn(t_i16, t_i16) -> mk_struct! {t_i16, i1});
765 ifn!("llvm.sadd.with.overflow.i32", fn(t_i32, t_i32) -> mk_struct! {t_i32, i1});
766 ifn!("llvm.sadd.with.overflow.i64", fn(t_i64, t_i64) -> mk_struct! {t_i64, i1});
767 ifn!("llvm.sadd.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct! {t_i128, i1});
769 ifn!("llvm.uadd.with.overflow.i8", fn(t_i8, t_i8) -> mk_struct! {t_i8, i1});
770 ifn!("llvm.uadd.with.overflow.i16", fn(t_i16, t_i16) -> mk_struct! {t_i16, i1});
771 ifn!("llvm.uadd.with.overflow.i32", fn(t_i32, t_i32) -> mk_struct! {t_i32, i1});
772 ifn!("llvm.uadd.with.overflow.i64", fn(t_i64, t_i64) -> mk_struct! {t_i64, i1});
773 ifn!("llvm.uadd.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct! {t_i128, i1});
775 ifn!("llvm.ssub.with.overflow.i8", fn(t_i8, t_i8) -> mk_struct! {t_i8, i1});
776 ifn!("llvm.ssub.with.overflow.i16", fn(t_i16, t_i16) -> mk_struct! {t_i16, i1});
777 ifn!("llvm.ssub.with.overflow.i32", fn(t_i32, t_i32) -> mk_struct! {t_i32, i1});
778 ifn!("llvm.ssub.with.overflow.i64", fn(t_i64, t_i64) -> mk_struct! {t_i64, i1});
779 ifn!("llvm.ssub.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct! {t_i128, i1});
781 ifn!("llvm.usub.with.overflow.i8", fn(t_i8, t_i8) -> mk_struct! {t_i8, i1});
782 ifn!("llvm.usub.with.overflow.i16", fn(t_i16, t_i16) -> mk_struct! {t_i16, i1});
783 ifn!("llvm.usub.with.overflow.i32", fn(t_i32, t_i32) -> mk_struct! {t_i32, i1});
784 ifn!("llvm.usub.with.overflow.i64", fn(t_i64, t_i64) -> mk_struct! {t_i64, i1});
785 ifn!("llvm.usub.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct! {t_i128, i1});
787 ifn!("llvm.smul.with.overflow.i8", fn(t_i8, t_i8) -> mk_struct! {t_i8, i1});
788 ifn!("llvm.smul.with.overflow.i16", fn(t_i16, t_i16) -> mk_struct! {t_i16, i1});
789 ifn!("llvm.smul.with.overflow.i32", fn(t_i32, t_i32) -> mk_struct! {t_i32, i1});
790 ifn!("llvm.smul.with.overflow.i64", fn(t_i64, t_i64) -> mk_struct! {t_i64, i1});
791 ifn!("llvm.smul.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct! {t_i128, i1});
793 ifn!("llvm.umul.with.overflow.i8", fn(t_i8, t_i8) -> mk_struct! {t_i8, i1});
794 ifn!("llvm.umul.with.overflow.i16", fn(t_i16, t_i16) -> mk_struct! {t_i16, i1});
795 ifn!("llvm.umul.with.overflow.i32", fn(t_i32, t_i32) -> mk_struct! {t_i32, i1});
796 ifn!("llvm.umul.with.overflow.i64", fn(t_i64, t_i64) -> mk_struct! {t_i64, i1});
797 ifn!("llvm.umul.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct! {t_i128, i1});
799 ifn!("llvm.sadd.sat.i8", fn(t_i8, t_i8) -> t_i8);
800 ifn!("llvm.sadd.sat.i16", fn(t_i16, t_i16) -> t_i16);
801 ifn!("llvm.sadd.sat.i32", fn(t_i32, t_i32) -> t_i32);
802 ifn!("llvm.sadd.sat.i64", fn(t_i64, t_i64) -> t_i64);
803 ifn!("llvm.sadd.sat.i128", fn(t_i128, t_i128) -> t_i128);
805 ifn!("llvm.uadd.sat.i8", fn(t_i8, t_i8) -> t_i8);
806 ifn!("llvm.uadd.sat.i16", fn(t_i16, t_i16) -> t_i16);
807 ifn!("llvm.uadd.sat.i32", fn(t_i32, t_i32) -> t_i32);
808 ifn!("llvm.uadd.sat.i64", fn(t_i64, t_i64) -> t_i64);
809 ifn!("llvm.uadd.sat.i128", fn(t_i128, t_i128) -> t_i128);
811 ifn!("llvm.ssub.sat.i8", fn(t_i8, t_i8) -> t_i8);
812 ifn!("llvm.ssub.sat.i16", fn(t_i16, t_i16) -> t_i16);
813 ifn!("llvm.ssub.sat.i32", fn(t_i32, t_i32) -> t_i32);
814 ifn!("llvm.ssub.sat.i64", fn(t_i64, t_i64) -> t_i64);
815 ifn!("llvm.ssub.sat.i128", fn(t_i128, t_i128) -> t_i128);
817 ifn!("llvm.usub.sat.i8", fn(t_i8, t_i8) -> t_i8);
818 ifn!("llvm.usub.sat.i16", fn(t_i16, t_i16) -> t_i16);
819 ifn!("llvm.usub.sat.i32", fn(t_i32, t_i32) -> t_i32);
820 ifn!("llvm.usub.sat.i64", fn(t_i64, t_i64) -> t_i64);
821 ifn!("llvm.usub.sat.i128", fn(t_i128, t_i128) -> t_i128);
823 ifn!("llvm.lifetime.start", fn(t_i64, i8p) -> void);
824 ifn!("llvm.lifetime.end", fn(t_i64, i8p) -> void);
826 ifn!("llvm.expect.i1", fn(i1, i1) -> i1);
827 ifn!("llvm.eh.typeid.for", fn(i8p) -> t_i32);
828 ifn!("llvm.localescape", fn(...) -> void);
829 ifn!("llvm.localrecover", fn(i8p, i8p, t_i32) -> i8p);
830 ifn!("llvm.x86.seh.recoverfp", fn(i8p, i8p) -> i8p);
832 ifn!("llvm.assume", fn(i1) -> void);
833 ifn!("llvm.prefetch", fn(i8p, t_i32, t_i32, t_i32) -> void);
835 // variadic intrinsics
836 ifn!("llvm.va_start", fn(i8p) -> void);
837 ifn!("llvm.va_end", fn(i8p) -> void);
838 ifn!("llvm.va_copy", fn(i8p, i8p) -> void);
840 if self.sess().opts.debuginfo != DebugInfo::None {
841 ifn!("llvm.dbg.declare", fn(self.type_metadata(), self.type_metadata()) -> void);
842 ifn!("llvm.dbg.value", fn(self.type_metadata(), t_i64, self.type_metadata()) -> void);
848 impl<'b, 'tcx> CodegenCx<'b, 'tcx> {
849 /// Generates a new symbol name with the given prefix. This symbol name must
850 /// only be used for definitions with `internal` or `private` linkage.
851 pub fn generate_local_symbol_name(&self, prefix: &str) -> String {
852 let idx = self.local_gen_sym_counter.get();
853 self.local_gen_sym_counter.set(idx + 1);
854 // Include a '.' character, so there can be no accidental conflicts with
855 // user defined names
856 let mut name = String::with_capacity(prefix.len() + 6);
857 name.push_str(prefix);
859 base_n::push_str(idx as u128, base_n::ALPHANUMERIC_ONLY, &mut name);
864 impl ty::layout::HasDataLayout for CodegenCx<'ll, 'tcx> {
865 fn data_layout(&self) -> &ty::layout::TargetDataLayout {
866 &self.tcx.data_layout
870 impl HasTargetSpec for CodegenCx<'ll, 'tcx> {
871 fn target_spec(&self) -> &Target {
872 &self.tcx.sess.target.target
876 impl ty::layout::HasTyCtxt<'tcx> for CodegenCx<'ll, 'tcx> {
877 fn tcx(&self) -> TyCtxt<'tcx> {
882 impl LayoutOf for CodegenCx<'ll, 'tcx> {
884 type TyLayout = TyLayout<'tcx>;
886 fn layout_of(&self, ty: Ty<'tcx>) -> Self::TyLayout {
887 self.spanned_layout_of(ty, DUMMY_SP)
890 fn spanned_layout_of(&self, ty: Ty<'tcx>, span: Span) -> Self::TyLayout {
891 self.tcx.layout_of(ty::ParamEnv::reveal_all().and(ty)).unwrap_or_else(|e| {
892 if let LayoutError::SizeOverflow(_) = e {
893 self.sess().span_fatal(span, &e.to_string())
895 bug!("failed to get layout for `{}`: {}", ty, e)
901 impl<'tcx, 'll> HasParamEnv<'tcx> for CodegenCx<'ll, 'tcx> {
902 fn param_env(&self) -> ty::ParamEnv<'tcx> {
903 ty::ParamEnv::reveal_all()