4 use crate::monomorphize::Instance;
5 use crate::value::Value;
6 use rustc::dep_graph::DepGraphSafe;
9 use crate::monomorphize::partitioning::CodegenUnit;
10 use crate::type_::Type;
11 use rustc_codegen_ssa::traits::*;
13 use rustc_data_structures::base_n;
14 use rustc_data_structures::small_c_str::SmallCStr;
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};
21 use rustc::util::nodemap::FxHashMap;
22 use rustc_target::spec::{HasTargetSpec, Target};
23 use rustc_codegen_ssa::callee::resolve_and_get_fn;
24 use rustc_codegen_ssa::base::wants_msvc_seh;
25 use crate::callee::get_fn;
28 use std::cell::{Cell, RefCell};
32 use syntax::symbol::LocalInternedString;
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: 'll> {
39 pub tcx: TyCtxt<'ll, 'tcx, '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
51 pub vtables: RefCell<FxHashMap<
52 (Ty<'tcx>, Option<ty::PolyExistentialTraitRef<'tcx>>), &'ll Value>>,
53 /// Cache of constant strings,
54 pub const_cstr_cache: RefCell<FxHashMap<LocalInternedString, &'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 pub unsafe fn create_module(
145 tcx: TyCtxt<'_, '_, '_>,
146 llcx: &'ll llvm::Context,
148 ) -> &'ll llvm::Module {
150 let mod_name = SmallCStr::new(mod_name);
151 let llmod = llvm::LLVMModuleCreateWithNameInContext(mod_name.as_ptr(), llcx);
153 // Ensure the data-layout values hardcoded remain the defaults.
154 if sess.target.target.options.is_builtin {
155 let tm = crate::back::write::create_informational_target_machine(&tcx.sess, false);
156 llvm::LLVMRustSetDataLayoutFromTargetMachine(llmod, tm);
157 llvm::LLVMRustDisposeTargetMachine(tm);
159 let data_layout = llvm::LLVMGetDataLayout(llmod);
160 let data_layout = str::from_utf8(CStr::from_ptr(data_layout).to_bytes())
161 .ok().expect("got a non-UTF8 data-layout from LLVM");
163 // Unfortunately LLVM target specs change over time, and right now we
164 // don't have proper support to work with any more than one
165 // `data_layout` than the one that is in the rust-lang/rust repo. If
166 // this compiler is configured against a custom LLVM, we may have a
167 // differing data layout, even though we should update our own to use
170 // As an interim hack, if CFG_LLVM_ROOT is not an empty string then we
171 // disable this check entirely as we may be configured with something
172 // that has a different target layout.
174 // Unsure if this will actually cause breakage when rustc is configured
178 let cfg_llvm_root = option_env!("CFG_LLVM_ROOT").unwrap_or("");
179 let custom_llvm_used = cfg_llvm_root.trim() != "";
181 if !custom_llvm_used && sess.target.target.data_layout != data_layout {
182 bug!("data-layout for builtin `{}` target, `{}`, \
183 differs from LLVM default, `{}`",
184 sess.target.target.llvm_target,
185 sess.target.target.data_layout,
190 let data_layout = SmallCStr::new(&sess.target.target.data_layout);
191 llvm::LLVMSetDataLayout(llmod, data_layout.as_ptr());
193 let llvm_target = SmallCStr::new(&sess.target.target.llvm_target);
194 llvm::LLVMRustSetNormalizedTarget(llmod, llvm_target.as_ptr());
196 if is_pie_binary(sess) {
197 llvm::LLVMRustSetModulePIELevel(llmod);
200 // If skipping the PLT is enabled, we need to add some module metadata
201 // to ensure intrinsic calls don't use it.
202 if !sess.needs_plt() {
203 let avoid_plt = "RtLibUseGOT\0".as_ptr() as *const _;
204 llvm::LLVMRustAddModuleFlag(llmod, avoid_plt, 1);
210 impl<'ll, 'tcx> CodegenCx<'ll, 'tcx> {
211 crate fn new(tcx: TyCtxt<'ll, 'tcx, 'tcx>,
212 codegen_unit: Arc<CodegenUnit<'tcx>>,
213 llvm_module: &'ll crate::ModuleLlvm)
215 // An interesting part of Windows which MSVC forces our hand on (and
216 // apparently MinGW didn't) is the usage of `dllimport` and `dllexport`
217 // attributes in LLVM IR as well as native dependencies (in C these
218 // correspond to `__declspec(dllimport)`).
220 // Whenever a dynamic library is built by MSVC it must have its public
221 // interface specified by functions tagged with `dllexport` or otherwise
222 // they're not available to be linked against. This poses a few problems
223 // for the compiler, some of which are somewhat fundamental, but we use
224 // the `use_dll_storage_attrs` variable below to attach the `dllexport`
225 // attribute to all LLVM functions that are exported e.g., they're
226 // already tagged with external linkage). This is suboptimal for a few
229 // * If an object file will never be included in a dynamic library,
230 // there's no need to attach the dllexport attribute. Most object
231 // files in Rust are not destined to become part of a dll as binaries
232 // are statically linked by default.
233 // * If the compiler is emitting both an rlib and a dylib, the same
234 // source object file is currently used but with MSVC this may be less
235 // feasible. The compiler may be able to get around this, but it may
236 // involve some invasive changes to deal with this.
238 // The flipside of this situation is that whenever you link to a dll and
239 // you import a function from it, the import should be tagged with
240 // `dllimport`. At this time, however, the compiler does not emit
241 // `dllimport` for any declarations other than constants (where it is
242 // required), which is again suboptimal for even more reasons!
244 // * Calling a function imported from another dll without using
245 // `dllimport` causes the linker/compiler to have extra overhead (one
246 // `jmp` instruction on x86) when calling the function.
247 // * The same object file may be used in different circumstances, so a
248 // function may be imported from a dll if the object is linked into a
249 // dll, but it may be just linked against if linked into an rlib.
250 // * The compiler has no knowledge about whether native functions should
251 // be tagged dllimport or not.
253 // For now the compiler takes the perf hit (I do not have any numbers to
254 // this effect) by marking very little as `dllimport` and praying the
255 // linker will take care of everything. Fixing this problem will likely
256 // require adding a few attributes to Rust itself (feature gated at the
257 // start) and then strongly recommending static linkage on MSVC!
258 let use_dll_storage_attrs = tcx.sess.target.target.options.is_like_msvc;
260 let check_overflow = tcx.sess.overflow_checks();
262 let tls_model = get_tls_model(&tcx.sess);
264 let (llcx, llmod) = (&*llvm_module.llcx, llvm_module.llmod());
266 let dbg_cx = if tcx.sess.opts.debuginfo != DebugInfo::None {
267 let dctx = debuginfo::CrateDebugContext::new(llmod);
268 debuginfo::metadata::compile_unit_metadata(tcx,
269 &codegen_unit.name().as_str(),
276 let isize_ty = Type::ix_llcx(llcx, tcx.data_layout.pointer_size.bits());
281 use_dll_storage_attrs,
286 instances: Default::default(),
287 vtables: Default::default(),
288 const_cstr_cache: Default::default(),
289 const_unsized: Default::default(),
290 const_globals: Default::default(),
291 statics_to_rauw: RefCell::new(Vec::new()),
292 used_statics: RefCell::new(Vec::new()),
293 lltypes: Default::default(),
294 scalar_lltypes: Default::default(),
295 pointee_infos: Default::default(),
298 eh_personality: Cell::new(None),
299 eh_unwind_resume: Cell::new(None),
300 rust_try_fn: Cell::new(None),
301 intrinsics: Default::default(),
302 local_gen_sym_counter: Cell::new(0),
306 crate fn statics_to_rauw(&self) -> &RefCell<Vec<(&'ll Value, &'ll Value)>> {
307 &self.statics_to_rauw
311 impl MiscMethods<'tcx> for CodegenCx<'ll, 'tcx> {
312 fn vtables(&self) -> &RefCell<FxHashMap<(Ty<'tcx>,
313 Option<ty::PolyExistentialTraitRef<'tcx>>), &'ll Value>>
318 fn instances(&self) -> &RefCell<FxHashMap<Instance<'tcx>, &'ll Value>> {
322 fn get_fn(&self, instance: Instance<'tcx>) -> &'ll Value {
323 get_fn(self, instance)
326 fn eh_personality(&self) -> &'ll Value {
327 // The exception handling personality function.
329 // If our compilation unit has the `eh_personality` lang item somewhere
330 // within it, then we just need to codegen that. Otherwise, we're
331 // building an rlib which will depend on some upstream implementation of
332 // this function, so we just codegen a generic reference to it. We don't
333 // specify any of the types for the function, we just make it a symbol
334 // that LLVM can later use.
336 // Note that MSVC is a little special here in that we don't use the
337 // `eh_personality` lang item at all. Currently LLVM has support for
338 // both Dwarf and SEH unwind mechanisms for MSVC targets and uses the
339 // *name of the personality function* to decide what kind of unwind side
340 // tables/landing pads to emit. It looks like Dwarf is used by default,
341 // injecting a dependency on the `_Unwind_Resume` symbol for resuming
342 // an "exception", but for MSVC we want to force SEH. This means that we
343 // can't actually have the personality function be our standard
344 // `rust_eh_personality` function, but rather we wired it up to the
345 // CRT's custom personality function, which forces LLVM to consider
346 // landing pads as "landing pads for SEH".
347 if let Some(llpersonality) = self.eh_personality.get() {
351 let llfn = match tcx.lang_items().eh_personality() {
352 Some(def_id) if !wants_msvc_seh(self.sess()) => {
353 resolve_and_get_fn(self, def_id, tcx.intern_substs(&[]))
356 let name = if wants_msvc_seh(self.sess()) {
359 "rust_eh_personality"
361 let fty = self.type_variadic_func(&[], self.type_i32());
362 self.declare_cfn(name, fty)
365 attributes::apply_target_cpu_attr(self, llfn);
366 self.eh_personality.set(Some(llfn));
370 // Returns a Value of the "eh_unwind_resume" lang item if one is defined,
371 // otherwise declares it as an external function.
372 fn eh_unwind_resume(&self) -> &'ll Value {
373 let unwresume = &self.eh_unwind_resume;
374 if let Some(llfn) = unwresume.get() {
379 assert!(self.sess().target.target.options.custom_unwind_resume);
380 if let Some(def_id) = tcx.lang_items().eh_unwind_resume() {
381 let llfn = resolve_and_get_fn(self, def_id, tcx.intern_substs(&[]));
382 unwresume.set(Some(llfn));
386 let sig = ty::Binder::bind(tcx.mk_fn_sig(
387 iter::once(tcx.mk_mut_ptr(tcx.types.u8)),
390 hir::Unsafety::Unsafe,
394 let llfn = self.declare_fn("rust_eh_unwind_resume", sig);
395 attributes::apply_target_cpu_attr(self, llfn);
396 unwresume.set(Some(llfn));
400 fn sess(&self) -> &Session {
404 fn check_overflow(&self) -> bool {
408 fn codegen_unit(&self) -> &Arc<CodegenUnit<'tcx>> {
412 fn used_statics(&self) -> &RefCell<Vec<&'ll Value>> {
416 fn set_frame_pointer_elimination(&self, llfn: &'ll Value) {
417 attributes::set_frame_pointer_elimination(self, llfn)
420 fn apply_target_cpu_attr(&self, llfn: &'ll Value) {
421 attributes::apply_target_cpu_attr(self, llfn)
424 fn create_used_variable(&self) {
425 let name = const_cstr!("llvm.used");
426 let section = const_cstr!("llvm.metadata");
427 let array = self.const_array(
428 &self.type_ptr_to(self.type_i8()),
429 &*self.used_statics.borrow()
433 let g = llvm::LLVMAddGlobal(self.llmod,
436 llvm::LLVMSetInitializer(g, array);
437 llvm::LLVMRustSetLinkage(g, llvm::Linkage::AppendingLinkage);
438 llvm::LLVMSetSection(g, section.as_ptr());
443 impl CodegenCx<'b, 'tcx> {
444 crate fn get_intrinsic(&self, key: &str) -> &'b Value {
445 if let Some(v) = self.intrinsics.borrow().get(key).cloned() {
449 self.declare_intrinsic(key).unwrap_or_else(|| bug!("unknown intrinsic '{}'", key))
453 &self, name: &'static str, args: Option<&[&'b llvm::Type]>, ret: &'b llvm::Type
454 ) -> &'b llvm::Value {
455 let fn_ty = if let Some(args) = args {
456 self.type_func(args, ret)
458 self.type_variadic_func(&[], ret)
460 let f = self.declare_cfn(name, fn_ty);
461 llvm::SetUnnamedAddr(f, false);
462 self.intrinsics.borrow_mut().insert(name, f.clone());
466 fn declare_intrinsic(
469 ) -> Option<&'b Value> {
471 ($name:expr, fn() -> $ret:expr) => (
473 return Some(self.insert_intrinsic($name, Some(&[]), $ret));
476 ($name:expr, fn(...) -> $ret:expr) => (
478 return Some(self.insert_intrinsic($name, None, $ret));
481 ($name:expr, fn($($arg:expr),*) -> $ret:expr) => (
483 return Some(self.insert_intrinsic($name, Some(&[$($arg),*]), $ret));
487 macro_rules! mk_struct {
488 ($($field_ty:expr),*) => (self.type_struct( &[$($field_ty),*], false))
491 let i8p = self.type_i8p();
492 let void = self.type_void();
493 let i1 = self.type_i1();
494 let t_i8 = self.type_i8();
495 let t_i16 = self.type_i16();
496 let t_i32 = self.type_i32();
497 let t_i64 = self.type_i64();
498 let t_i128 = self.type_i128();
499 let t_f32 = self.type_f32();
500 let t_f64 = self.type_f64();
502 macro_rules! vector_types {
503 ($id_out:ident: $elem_ty:ident, $len:expr) => {
504 let $id_out = self.type_vector($elem_ty, $len);
506 ($($id_out:ident: $elem_ty:ident, $len:expr;)*) => {
507 $(vector_types!($id_out: $elem_ty, $len);)*
521 ifn!("llvm.memset.p0i8.i16", fn(i8p, t_i8, t_i16, t_i32, i1) -> void);
522 ifn!("llvm.memset.p0i8.i32", fn(i8p, t_i8, t_i32, t_i32, i1) -> void);
523 ifn!("llvm.memset.p0i8.i64", fn(i8p, t_i8, t_i64, t_i32, i1) -> void);
525 ifn!("llvm.trap", fn() -> void);
526 ifn!("llvm.debugtrap", fn() -> void);
527 ifn!("llvm.frameaddress", fn(t_i32) -> i8p);
529 ifn!("llvm.powi.f32", fn(t_f32, t_i32) -> t_f32);
530 ifn!("llvm.powi.v2f32", fn(t_v2f32, t_i32) -> t_v2f32);
531 ifn!("llvm.powi.v4f32", fn(t_v4f32, t_i32) -> t_v4f32);
532 ifn!("llvm.powi.v8f32", fn(t_v8f32, t_i32) -> t_v8f32);
533 ifn!("llvm.powi.v16f32", fn(t_v16f32, t_i32) -> t_v16f32);
534 ifn!("llvm.powi.f64", fn(t_f64, t_i32) -> t_f64);
535 ifn!("llvm.powi.v2f64", fn(t_v2f64, t_i32) -> t_v2f64);
536 ifn!("llvm.powi.v4f64", fn(t_v4f64, t_i32) -> t_v4f64);
537 ifn!("llvm.powi.v8f64", fn(t_v8f64, t_i32) -> t_v8f64);
539 ifn!("llvm.pow.f32", fn(t_f32, t_f32) -> t_f32);
540 ifn!("llvm.pow.v2f32", fn(t_v2f32, t_v2f32) -> t_v2f32);
541 ifn!("llvm.pow.v4f32", fn(t_v4f32, t_v4f32) -> t_v4f32);
542 ifn!("llvm.pow.v8f32", fn(t_v8f32, t_v8f32) -> t_v8f32);
543 ifn!("llvm.pow.v16f32", fn(t_v16f32, t_v16f32) -> t_v16f32);
544 ifn!("llvm.pow.f64", fn(t_f64, t_f64) -> t_f64);
545 ifn!("llvm.pow.v2f64", fn(t_v2f64, t_v2f64) -> t_v2f64);
546 ifn!("llvm.pow.v4f64", fn(t_v4f64, t_v4f64) -> t_v4f64);
547 ifn!("llvm.pow.v8f64", fn(t_v8f64, t_v8f64) -> t_v8f64);
549 ifn!("llvm.sqrt.f32", fn(t_f32) -> t_f32);
550 ifn!("llvm.sqrt.v2f32", fn(t_v2f32) -> t_v2f32);
551 ifn!("llvm.sqrt.v4f32", fn(t_v4f32) -> t_v4f32);
552 ifn!("llvm.sqrt.v8f32", fn(t_v8f32) -> t_v8f32);
553 ifn!("llvm.sqrt.v16f32", fn(t_v16f32) -> t_v16f32);
554 ifn!("llvm.sqrt.f64", fn(t_f64) -> t_f64);
555 ifn!("llvm.sqrt.v2f64", fn(t_v2f64) -> t_v2f64);
556 ifn!("llvm.sqrt.v4f64", fn(t_v4f64) -> t_v4f64);
557 ifn!("llvm.sqrt.v8f64", fn(t_v8f64) -> t_v8f64);
559 ifn!("llvm.sin.f32", fn(t_f32) -> t_f32);
560 ifn!("llvm.sin.v2f32", fn(t_v2f32) -> t_v2f32);
561 ifn!("llvm.sin.v4f32", fn(t_v4f32) -> t_v4f32);
562 ifn!("llvm.sin.v8f32", fn(t_v8f32) -> t_v8f32);
563 ifn!("llvm.sin.v16f32", fn(t_v16f32) -> t_v16f32);
564 ifn!("llvm.sin.f64", fn(t_f64) -> t_f64);
565 ifn!("llvm.sin.v2f64", fn(t_v2f64) -> t_v2f64);
566 ifn!("llvm.sin.v4f64", fn(t_v4f64) -> t_v4f64);
567 ifn!("llvm.sin.v8f64", fn(t_v8f64) -> t_v8f64);
569 ifn!("llvm.cos.f32", fn(t_f32) -> t_f32);
570 ifn!("llvm.cos.v2f32", fn(t_v2f32) -> t_v2f32);
571 ifn!("llvm.cos.v4f32", fn(t_v4f32) -> t_v4f32);
572 ifn!("llvm.cos.v8f32", fn(t_v8f32) -> t_v8f32);
573 ifn!("llvm.cos.v16f32", fn(t_v16f32) -> t_v16f32);
574 ifn!("llvm.cos.f64", fn(t_f64) -> t_f64);
575 ifn!("llvm.cos.v2f64", fn(t_v2f64) -> t_v2f64);
576 ifn!("llvm.cos.v4f64", fn(t_v4f64) -> t_v4f64);
577 ifn!("llvm.cos.v8f64", fn(t_v8f64) -> t_v8f64);
579 ifn!("llvm.exp.f32", fn(t_f32) -> t_f32);
580 ifn!("llvm.exp.v2f32", fn(t_v2f32) -> t_v2f32);
581 ifn!("llvm.exp.v4f32", fn(t_v4f32) -> t_v4f32);
582 ifn!("llvm.exp.v8f32", fn(t_v8f32) -> t_v8f32);
583 ifn!("llvm.exp.v16f32", fn(t_v16f32) -> t_v16f32);
584 ifn!("llvm.exp.f64", fn(t_f64) -> t_f64);
585 ifn!("llvm.exp.v2f64", fn(t_v2f64) -> t_v2f64);
586 ifn!("llvm.exp.v4f64", fn(t_v4f64) -> t_v4f64);
587 ifn!("llvm.exp.v8f64", fn(t_v8f64) -> t_v8f64);
589 ifn!("llvm.exp2.f32", fn(t_f32) -> t_f32);
590 ifn!("llvm.exp2.v2f32", fn(t_v2f32) -> t_v2f32);
591 ifn!("llvm.exp2.v4f32", fn(t_v4f32) -> t_v4f32);
592 ifn!("llvm.exp2.v8f32", fn(t_v8f32) -> t_v8f32);
593 ifn!("llvm.exp2.v16f32", fn(t_v16f32) -> t_v16f32);
594 ifn!("llvm.exp2.f64", fn(t_f64) -> t_f64);
595 ifn!("llvm.exp2.v2f64", fn(t_v2f64) -> t_v2f64);
596 ifn!("llvm.exp2.v4f64", fn(t_v4f64) -> t_v4f64);
597 ifn!("llvm.exp2.v8f64", fn(t_v8f64) -> t_v8f64);
599 ifn!("llvm.log.f32", fn(t_f32) -> t_f32);
600 ifn!("llvm.log.v2f32", fn(t_v2f32) -> t_v2f32);
601 ifn!("llvm.log.v4f32", fn(t_v4f32) -> t_v4f32);
602 ifn!("llvm.log.v8f32", fn(t_v8f32) -> t_v8f32);
603 ifn!("llvm.log.v16f32", fn(t_v16f32) -> t_v16f32);
604 ifn!("llvm.log.f64", fn(t_f64) -> t_f64);
605 ifn!("llvm.log.v2f64", fn(t_v2f64) -> t_v2f64);
606 ifn!("llvm.log.v4f64", fn(t_v4f64) -> t_v4f64);
607 ifn!("llvm.log.v8f64", fn(t_v8f64) -> t_v8f64);
609 ifn!("llvm.log10.f32", fn(t_f32) -> t_f32);
610 ifn!("llvm.log10.v2f32", fn(t_v2f32) -> t_v2f32);
611 ifn!("llvm.log10.v4f32", fn(t_v4f32) -> t_v4f32);
612 ifn!("llvm.log10.v8f32", fn(t_v8f32) -> t_v8f32);
613 ifn!("llvm.log10.v16f32", fn(t_v16f32) -> t_v16f32);
614 ifn!("llvm.log10.f64", fn(t_f64) -> t_f64);
615 ifn!("llvm.log10.v2f64", fn(t_v2f64) -> t_v2f64);
616 ifn!("llvm.log10.v4f64", fn(t_v4f64) -> t_v4f64);
617 ifn!("llvm.log10.v8f64", fn(t_v8f64) -> t_v8f64);
619 ifn!("llvm.log2.f32", fn(t_f32) -> t_f32);
620 ifn!("llvm.log2.v2f32", fn(t_v2f32) -> t_v2f32);
621 ifn!("llvm.log2.v4f32", fn(t_v4f32) -> t_v4f32);
622 ifn!("llvm.log2.v8f32", fn(t_v8f32) -> t_v8f32);
623 ifn!("llvm.log2.v16f32", fn(t_v16f32) -> t_v16f32);
624 ifn!("llvm.log2.f64", fn(t_f64) -> t_f64);
625 ifn!("llvm.log2.v2f64", fn(t_v2f64) -> t_v2f64);
626 ifn!("llvm.log2.v4f64", fn(t_v4f64) -> t_v4f64);
627 ifn!("llvm.log2.v8f64", fn(t_v8f64) -> t_v8f64);
629 ifn!("llvm.fma.f32", fn(t_f32, t_f32, t_f32) -> t_f32);
630 ifn!("llvm.fma.v2f32", fn(t_v2f32, t_v2f32, t_v2f32) -> t_v2f32);
631 ifn!("llvm.fma.v4f32", fn(t_v4f32, t_v4f32, t_v4f32) -> t_v4f32);
632 ifn!("llvm.fma.v8f32", fn(t_v8f32, t_v8f32, t_v8f32) -> t_v8f32);
633 ifn!("llvm.fma.v16f32", fn(t_v16f32, t_v16f32, t_v16f32) -> t_v16f32);
634 ifn!("llvm.fma.f64", fn(t_f64, t_f64, t_f64) -> t_f64);
635 ifn!("llvm.fma.v2f64", fn(t_v2f64, t_v2f64, t_v2f64) -> t_v2f64);
636 ifn!("llvm.fma.v4f64", fn(t_v4f64, t_v4f64, t_v4f64) -> t_v4f64);
637 ifn!("llvm.fma.v8f64", fn(t_v8f64, t_v8f64, t_v8f64) -> t_v8f64);
639 ifn!("llvm.fabs.f32", fn(t_f32) -> t_f32);
640 ifn!("llvm.fabs.v2f32", fn(t_v2f32) -> t_v2f32);
641 ifn!("llvm.fabs.v4f32", fn(t_v4f32) -> t_v4f32);
642 ifn!("llvm.fabs.v8f32", fn(t_v8f32) -> t_v8f32);
643 ifn!("llvm.fabs.v16f32", fn(t_v16f32) -> t_v16f32);
644 ifn!("llvm.fabs.f64", fn(t_f64) -> t_f64);
645 ifn!("llvm.fabs.v2f64", fn(t_v2f64) -> t_v2f64);
646 ifn!("llvm.fabs.v4f64", fn(t_v4f64) -> t_v4f64);
647 ifn!("llvm.fabs.v8f64", fn(t_v8f64) -> t_v8f64);
649 ifn!("llvm.floor.f32", fn(t_f32) -> t_f32);
650 ifn!("llvm.floor.v2f32", fn(t_v2f32) -> t_v2f32);
651 ifn!("llvm.floor.v4f32", fn(t_v4f32) -> t_v4f32);
652 ifn!("llvm.floor.v8f32", fn(t_v8f32) -> t_v8f32);
653 ifn!("llvm.floor.v16f32", fn(t_v16f32) -> t_v16f32);
654 ifn!("llvm.floor.f64", fn(t_f64) -> t_f64);
655 ifn!("llvm.floor.v2f64", fn(t_v2f64) -> t_v2f64);
656 ifn!("llvm.floor.v4f64", fn(t_v4f64) -> t_v4f64);
657 ifn!("llvm.floor.v8f64", fn(t_v8f64) -> t_v8f64);
659 ifn!("llvm.ceil.f32", fn(t_f32) -> t_f32);
660 ifn!("llvm.ceil.v2f32", fn(t_v2f32) -> t_v2f32);
661 ifn!("llvm.ceil.v4f32", fn(t_v4f32) -> t_v4f32);
662 ifn!("llvm.ceil.v8f32", fn(t_v8f32) -> t_v8f32);
663 ifn!("llvm.ceil.v16f32", fn(t_v16f32) -> t_v16f32);
664 ifn!("llvm.ceil.f64", fn(t_f64) -> t_f64);
665 ifn!("llvm.ceil.v2f64", fn(t_v2f64) -> t_v2f64);
666 ifn!("llvm.ceil.v4f64", fn(t_v4f64) -> t_v4f64);
667 ifn!("llvm.ceil.v8f64", fn(t_v8f64) -> t_v8f64);
669 ifn!("llvm.trunc.f32", fn(t_f32) -> t_f32);
670 ifn!("llvm.trunc.f64", fn(t_f64) -> t_f64);
672 ifn!("llvm.copysign.f32", fn(t_f32, t_f32) -> t_f32);
673 ifn!("llvm.copysign.f64", fn(t_f64, t_f64) -> t_f64);
674 ifn!("llvm.round.f32", fn(t_f32) -> t_f32);
675 ifn!("llvm.round.f64", fn(t_f64) -> t_f64);
677 ifn!("llvm.rint.f32", fn(t_f32) -> t_f32);
678 ifn!("llvm.rint.f64", fn(t_f64) -> t_f64);
679 ifn!("llvm.nearbyint.f32", fn(t_f32) -> t_f32);
680 ifn!("llvm.nearbyint.f64", fn(t_f64) -> t_f64);
682 ifn!("llvm.ctpop.i8", fn(t_i8) -> t_i8);
683 ifn!("llvm.ctpop.i16", fn(t_i16) -> t_i16);
684 ifn!("llvm.ctpop.i32", fn(t_i32) -> t_i32);
685 ifn!("llvm.ctpop.i64", fn(t_i64) -> t_i64);
686 ifn!("llvm.ctpop.i128", fn(t_i128) -> t_i128);
688 ifn!("llvm.ctlz.i8", fn(t_i8 , i1) -> t_i8);
689 ifn!("llvm.ctlz.i16", fn(t_i16, i1) -> t_i16);
690 ifn!("llvm.ctlz.i32", fn(t_i32, i1) -> t_i32);
691 ifn!("llvm.ctlz.i64", fn(t_i64, i1) -> t_i64);
692 ifn!("llvm.ctlz.i128", fn(t_i128, i1) -> t_i128);
694 ifn!("llvm.cttz.i8", fn(t_i8 , i1) -> t_i8);
695 ifn!("llvm.cttz.i16", fn(t_i16, i1) -> t_i16);
696 ifn!("llvm.cttz.i32", fn(t_i32, i1) -> t_i32);
697 ifn!("llvm.cttz.i64", fn(t_i64, i1) -> t_i64);
698 ifn!("llvm.cttz.i128", fn(t_i128, i1) -> t_i128);
700 ifn!("llvm.bswap.i16", fn(t_i16) -> t_i16);
701 ifn!("llvm.bswap.i32", fn(t_i32) -> t_i32);
702 ifn!("llvm.bswap.i64", fn(t_i64) -> t_i64);
703 ifn!("llvm.bswap.i128", fn(t_i128) -> t_i128);
705 ifn!("llvm.bitreverse.i8", fn(t_i8) -> t_i8);
706 ifn!("llvm.bitreverse.i16", fn(t_i16) -> t_i16);
707 ifn!("llvm.bitreverse.i32", fn(t_i32) -> t_i32);
708 ifn!("llvm.bitreverse.i64", fn(t_i64) -> t_i64);
709 ifn!("llvm.bitreverse.i128", fn(t_i128) -> t_i128);
711 ifn!("llvm.fshl.i8", fn(t_i8, t_i8, t_i8) -> t_i8);
712 ifn!("llvm.fshl.i16", fn(t_i16, t_i16, t_i16) -> t_i16);
713 ifn!("llvm.fshl.i32", fn(t_i32, t_i32, t_i32) -> t_i32);
714 ifn!("llvm.fshl.i64", fn(t_i64, t_i64, t_i64) -> t_i64);
715 ifn!("llvm.fshl.i128", fn(t_i128, t_i128, t_i128) -> t_i128);
717 ifn!("llvm.fshr.i8", fn(t_i8, t_i8, t_i8) -> t_i8);
718 ifn!("llvm.fshr.i16", fn(t_i16, t_i16, t_i16) -> t_i16);
719 ifn!("llvm.fshr.i32", fn(t_i32, t_i32, t_i32) -> t_i32);
720 ifn!("llvm.fshr.i64", fn(t_i64, t_i64, t_i64) -> t_i64);
721 ifn!("llvm.fshr.i128", fn(t_i128, t_i128, t_i128) -> t_i128);
723 ifn!("llvm.sadd.with.overflow.i8", fn(t_i8, t_i8) -> mk_struct!{t_i8, i1});
724 ifn!("llvm.sadd.with.overflow.i16", fn(t_i16, t_i16) -> mk_struct!{t_i16, i1});
725 ifn!("llvm.sadd.with.overflow.i32", fn(t_i32, t_i32) -> mk_struct!{t_i32, i1});
726 ifn!("llvm.sadd.with.overflow.i64", fn(t_i64, t_i64) -> mk_struct!{t_i64, i1});
727 ifn!("llvm.sadd.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct!{t_i128, i1});
729 ifn!("llvm.uadd.with.overflow.i8", fn(t_i8, t_i8) -> mk_struct!{t_i8, i1});
730 ifn!("llvm.uadd.with.overflow.i16", fn(t_i16, t_i16) -> mk_struct!{t_i16, i1});
731 ifn!("llvm.uadd.with.overflow.i32", fn(t_i32, t_i32) -> mk_struct!{t_i32, i1});
732 ifn!("llvm.uadd.with.overflow.i64", fn(t_i64, t_i64) -> mk_struct!{t_i64, i1});
733 ifn!("llvm.uadd.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct!{t_i128, i1});
735 ifn!("llvm.ssub.with.overflow.i8", fn(t_i8, t_i8) -> mk_struct!{t_i8, i1});
736 ifn!("llvm.ssub.with.overflow.i16", fn(t_i16, t_i16) -> mk_struct!{t_i16, i1});
737 ifn!("llvm.ssub.with.overflow.i32", fn(t_i32, t_i32) -> mk_struct!{t_i32, i1});
738 ifn!("llvm.ssub.with.overflow.i64", fn(t_i64, t_i64) -> mk_struct!{t_i64, i1});
739 ifn!("llvm.ssub.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct!{t_i128, i1});
741 ifn!("llvm.usub.with.overflow.i8", fn(t_i8, t_i8) -> mk_struct!{t_i8, i1});
742 ifn!("llvm.usub.with.overflow.i16", fn(t_i16, t_i16) -> mk_struct!{t_i16, i1});
743 ifn!("llvm.usub.with.overflow.i32", fn(t_i32, t_i32) -> mk_struct!{t_i32, i1});
744 ifn!("llvm.usub.with.overflow.i64", fn(t_i64, t_i64) -> mk_struct!{t_i64, i1});
745 ifn!("llvm.usub.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct!{t_i128, i1});
747 ifn!("llvm.smul.with.overflow.i8", fn(t_i8, t_i8) -> mk_struct!{t_i8, i1});
748 ifn!("llvm.smul.with.overflow.i16", fn(t_i16, t_i16) -> mk_struct!{t_i16, i1});
749 ifn!("llvm.smul.with.overflow.i32", fn(t_i32, t_i32) -> mk_struct!{t_i32, i1});
750 ifn!("llvm.smul.with.overflow.i64", fn(t_i64, t_i64) -> mk_struct!{t_i64, i1});
751 ifn!("llvm.smul.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct!{t_i128, i1});
753 ifn!("llvm.umul.with.overflow.i8", fn(t_i8, t_i8) -> mk_struct!{t_i8, i1});
754 ifn!("llvm.umul.with.overflow.i16", fn(t_i16, t_i16) -> mk_struct!{t_i16, i1});
755 ifn!("llvm.umul.with.overflow.i32", fn(t_i32, t_i32) -> mk_struct!{t_i32, i1});
756 ifn!("llvm.umul.with.overflow.i64", fn(t_i64, t_i64) -> mk_struct!{t_i64, i1});
757 ifn!("llvm.umul.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct!{t_i128, i1});
759 ifn!("llvm.sadd.sat.i8", fn(t_i8, t_i8) -> t_i8);
760 ifn!("llvm.sadd.sat.i16", fn(t_i16, t_i16) -> t_i16);
761 ifn!("llvm.sadd.sat.i32", fn(t_i32, t_i32) -> t_i32);
762 ifn!("llvm.sadd.sat.i64", fn(t_i64, t_i64) -> t_i64);
763 ifn!("llvm.sadd.sat.i128", fn(t_i128, t_i128) -> t_i128);
765 ifn!("llvm.uadd.sat.i8", fn(t_i8, t_i8) -> t_i8);
766 ifn!("llvm.uadd.sat.i16", fn(t_i16, t_i16) -> t_i16);
767 ifn!("llvm.uadd.sat.i32", fn(t_i32, t_i32) -> t_i32);
768 ifn!("llvm.uadd.sat.i64", fn(t_i64, t_i64) -> t_i64);
769 ifn!("llvm.uadd.sat.i128", fn(t_i128, t_i128) -> t_i128);
771 ifn!("llvm.ssub.sat.i8", fn(t_i8, t_i8) -> t_i8);
772 ifn!("llvm.ssub.sat.i16", fn(t_i16, t_i16) -> t_i16);
773 ifn!("llvm.ssub.sat.i32", fn(t_i32, t_i32) -> t_i32);
774 ifn!("llvm.ssub.sat.i64", fn(t_i64, t_i64) -> t_i64);
775 ifn!("llvm.ssub.sat.i128", fn(t_i128, t_i128) -> t_i128);
777 ifn!("llvm.usub.sat.i8", fn(t_i8, t_i8) -> t_i8);
778 ifn!("llvm.usub.sat.i16", fn(t_i16, t_i16) -> t_i16);
779 ifn!("llvm.usub.sat.i32", fn(t_i32, t_i32) -> t_i32);
780 ifn!("llvm.usub.sat.i64", fn(t_i64, t_i64) -> t_i64);
781 ifn!("llvm.usub.sat.i128", fn(t_i128, t_i128) -> t_i128);
783 ifn!("llvm.lifetime.start", fn(t_i64,i8p) -> void);
784 ifn!("llvm.lifetime.end", fn(t_i64, i8p) -> void);
786 ifn!("llvm.expect.i1", fn(i1, i1) -> i1);
787 ifn!("llvm.eh.typeid.for", fn(i8p) -> t_i32);
788 ifn!("llvm.localescape", fn(...) -> void);
789 ifn!("llvm.localrecover", fn(i8p, i8p, t_i32) -> i8p);
790 ifn!("llvm.x86.seh.recoverfp", fn(i8p, i8p) -> i8p);
792 ifn!("llvm.assume", fn(i1) -> void);
793 ifn!("llvm.prefetch", fn(i8p, t_i32, t_i32, t_i32) -> void);
795 // variadic intrinsics
796 ifn!("llvm.va_start", fn(i8p) -> void);
797 ifn!("llvm.va_end", fn(i8p) -> void);
798 ifn!("llvm.va_copy", fn(i8p, i8p) -> void);
800 if self.sess().opts.debuginfo != DebugInfo::None {
801 ifn!("llvm.dbg.declare", fn(self.type_metadata(), self.type_metadata()) -> void);
802 ifn!("llvm.dbg.value", fn(self.type_metadata(), t_i64, self.type_metadata()) -> void);
808 impl<'b, 'tcx> CodegenCx<'b, 'tcx> {
809 /// Generates a new symbol name with the given prefix. This symbol name must
810 /// only be used for definitions with `internal` or `private` linkage.
811 pub fn generate_local_symbol_name(&self, prefix: &str) -> String {
812 let idx = self.local_gen_sym_counter.get();
813 self.local_gen_sym_counter.set(idx + 1);
814 // Include a '.' character, so there can be no accidental conflicts with
815 // user defined names
816 let mut name = String::with_capacity(prefix.len() + 6);
817 name.push_str(prefix);
819 base_n::push_str(idx as u128, base_n::ALPHANUMERIC_ONLY, &mut name);
824 impl ty::layout::HasDataLayout for CodegenCx<'ll, 'tcx> {
825 fn data_layout(&self) -> &ty::layout::TargetDataLayout {
826 &self.tcx.data_layout
830 impl HasTargetSpec for CodegenCx<'ll, 'tcx> {
831 fn target_spec(&self) -> &Target {
832 &self.tcx.sess.target.target
836 impl ty::layout::HasTyCtxt<'tcx> for CodegenCx<'ll, 'tcx> {
837 fn tcx<'a>(&'a self) -> TyCtxt<'a, 'tcx, 'tcx> {
842 impl LayoutOf for CodegenCx<'ll, 'tcx> {
844 type TyLayout = TyLayout<'tcx>;
846 fn layout_of(&self, ty: Ty<'tcx>) -> Self::TyLayout {
847 self.tcx.layout_of(ty::ParamEnv::reveal_all().and(ty))
848 .unwrap_or_else(|e| if let LayoutError::SizeOverflow(_) = e {
849 self.sess().fatal(&e.to_string())
851 bug!("failed to get layout for `{}`: {}", ty, e)
856 impl<'tcx, 'll> HasParamEnv<'tcx> for CodegenCx<'ll, 'tcx> {
857 fn param_env(&self) -> ty::ParamEnv<'tcx> {
858 ty::ParamEnv::reveal_all()