2 use crate::callee::get_fn;
6 use crate::type_::Type;
7 use crate::value::Value;
10 use rustc::dep_graph::DepGraphSafe;
11 use rustc::mir::mono::CodegenUnit;
12 use rustc::ty::layout::{
13 HasParamEnv, LayoutError, LayoutOf, PointeeInfo, Size, TyLayout, VariantIdx,
15 use rustc::ty::{self, Instance, Ty, TyCtxt};
16 use rustc_codegen_ssa::base::wants_msvc_seh;
17 use rustc_codegen_ssa::traits::*;
18 use rustc_data_structures::base_n;
19 use rustc_data_structures::const_cstr;
20 use rustc_data_structures::fx::FxHashMap;
21 use rustc_data_structures::small_c_str::SmallCStr;
22 use rustc_session::config::{self, CFGuard, DebugInfo};
23 use rustc_session::Session;
24 use rustc_span::source_map::{Span, DUMMY_SP};
25 use rustc_span::symbol::Symbol;
26 use rustc_target::spec::{HasTargetSpec, Target};
28 use std::cell::{Cell, RefCell};
33 /// There is one `CodegenCx` per compilation unit. Each one has its own LLVM
34 /// `llvm::Context` so that several compilation units may be optimized in parallel.
35 /// All other LLVM data structures in the `CodegenCx` are tied to that `llvm::Context`.
36 pub struct CodegenCx<'ll, 'tcx> {
37 pub tcx: TyCtxt<'tcx>,
38 pub check_overflow: bool,
39 pub use_dll_storage_attrs: bool,
40 pub tls_model: llvm::ThreadLocalMode,
42 pub llmod: &'ll llvm::Module,
43 pub llcx: &'ll llvm::Context,
44 pub codegen_unit: Arc<CodegenUnit<'tcx>>,
46 /// Cache instances of monomorphic and polymorphic items
47 pub instances: RefCell<FxHashMap<Instance<'tcx>, &'ll Value>>,
48 /// Cache generated vtables
50 RefCell<FxHashMap<(Ty<'tcx>, Option<ty::PolyExistentialTraitRef<'tcx>>), &'ll Value>>,
51 /// Cache of constant strings,
52 pub const_cstr_cache: RefCell<FxHashMap<Symbol, &'ll Value>>,
54 /// Reverse-direction for const ptrs cast from globals.
55 /// Key is a Value holding a *T,
56 /// Val is a Value holding a *[T].
58 /// Needed because LLVM loses pointer->pointee association
59 /// when we ptrcast, and we have to ptrcast during codegen
60 /// of a [T] const because we form a slice, a (*T,usize) pair, not
61 /// a pointer to an LLVM array type. Similar for trait objects.
62 pub const_unsized: RefCell<FxHashMap<&'ll Value, &'ll Value>>,
64 /// Cache of emitted const globals (value -> global)
65 pub const_globals: RefCell<FxHashMap<&'ll Value, &'ll Value>>,
67 /// List of globals for static variables which need to be passed to the
68 /// LLVM function ReplaceAllUsesWith (RAUW) when codegen is complete.
69 /// (We have to make sure we don't invalidate any Values referring
71 pub statics_to_rauw: RefCell<Vec<(&'ll Value, &'ll Value)>>,
73 /// Statics that will be placed in the llvm.used variable
74 /// See <http://llvm.org/docs/LangRef.html#the-llvm-used-global-variable> for details
75 pub used_statics: RefCell<Vec<&'ll Value>>,
77 pub lltypes: RefCell<FxHashMap<(Ty<'tcx>, Option<VariantIdx>), &'ll Type>>,
78 pub scalar_lltypes: RefCell<FxHashMap<Ty<'tcx>, &'ll Type>>,
79 pub pointee_infos: RefCell<FxHashMap<(Ty<'tcx>, Size), Option<PointeeInfo>>>,
80 pub isize_ty: &'ll Type,
82 pub dbg_cx: Option<debuginfo::CrateDebugContext<'ll, 'tcx>>,
84 eh_personality: Cell<Option<&'ll Value>>,
85 pub rust_try_fn: Cell<Option<&'ll Value>>,
87 intrinsics: RefCell<FxHashMap<&'static str, &'ll Value>>,
89 /// A counter that is used for generating local symbol names
90 local_gen_sym_counter: Cell<usize>,
93 impl<'ll, 'tcx> DepGraphSafe for CodegenCx<'ll, 'tcx> {}
95 pub fn get_reloc_model(sess: &Session) -> llvm::RelocMode {
96 let reloc_model_arg = match sess.opts.cg.relocation_model {
97 Some(ref s) => &s[..],
98 None => &sess.target.target.options.relocation_model[..],
101 match crate::back::write::RELOC_MODEL_ARGS.iter().find(|&&arg| arg.0 == reloc_model_arg) {
104 sess.err(&format!("{:?} is not a valid relocation mode", reloc_model_arg));
105 sess.abort_if_errors();
111 fn get_tls_model(sess: &Session) -> llvm::ThreadLocalMode {
112 let tls_model_arg = match sess.opts.debugging_opts.tls_model {
113 Some(ref s) => &s[..],
114 None => &sess.target.target.options.tls_model[..],
117 match crate::back::write::TLS_MODEL_ARGS.iter().find(|&&arg| arg.0 == tls_model_arg) {
120 sess.err(&format!("{:?} is not a valid TLS model", tls_model_arg));
121 sess.abort_if_errors();
127 fn is_any_library(sess: &Session) -> bool {
128 sess.crate_types.borrow().iter().any(|ty| *ty != config::CrateType::Executable)
131 pub fn is_pie_binary(sess: &Session) -> bool {
132 !is_any_library(sess) && get_reloc_model(sess) == llvm::RelocMode::PIC
135 fn strip_function_ptr_alignment(data_layout: String) -> String {
136 // FIXME: Make this more general.
137 data_layout.replace("-Fi8-", "-")
140 fn strip_x86_address_spaces(data_layout: String) -> String {
141 data_layout.replace("-p270:32:32-p271:32:32-p272:64:64-", "-")
144 pub unsafe fn create_module(
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 let mut target_data_layout = sess.target.target.data_layout.clone();
154 if llvm_util::get_major_version() < 9 {
155 target_data_layout = strip_function_ptr_alignment(target_data_layout);
157 if llvm_util::get_major_version() < 10 {
158 if sess.target.target.arch == "x86" || sess.target.target.arch == "x86_64" {
159 target_data_layout = strip_x86_address_spaces(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::LLVMGetDataLayoutStr(llmod);
170 let llvm_data_layout = str::from_utf8(CStr::from_ptr(llvm_data_layout).to_bytes())
171 .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 {
193 "data-layout for builtin `{}` target, `{}`, \
194 differs from LLVM default, `{}`",
195 sess.target.target.llvm_target,
202 let data_layout = SmallCStr::new(&target_data_layout);
203 llvm::LLVMSetDataLayout(llmod, data_layout.as_ptr());
205 let llvm_target = SmallCStr::new(&sess.target.target.llvm_target);
206 llvm::LLVMRustSetNormalizedTarget(llmod, llvm_target.as_ptr());
208 if get_reloc_model(sess) == llvm::RelocMode::PIC {
209 llvm::LLVMRustSetModulePICLevel(llmod);
212 if is_pie_binary(sess) {
213 llvm::LLVMRustSetModulePIELevel(llmod);
216 // If skipping the PLT is enabled, we need to add some module metadata
217 // to ensure intrinsic calls don't use it.
218 if !sess.needs_plt() {
219 let avoid_plt = "RtLibUseGOT\0".as_ptr().cast();
220 llvm::LLVMRustAddModuleFlag(llmod, avoid_plt, 1);
223 // Set module flags to enable Windows Control Flow Guard (/guard:cf) metadata
224 // only (`cfguard=1`) or metadata and checks (`cfguard=2`).
225 match sess.opts.debugging_opts.control_flow_guard {
226 CFGuard::Disabled => {}
227 CFGuard::NoChecks => {
228 llvm::LLVMRustAddModuleFlag(llmod, "cfguard\0".as_ptr() as *const _, 1)
230 CFGuard::Checks => llvm::LLVMRustAddModuleFlag(llmod, "cfguard\0".as_ptr() as *const _, 2),
236 impl<'ll, 'tcx> CodegenCx<'ll, 'tcx> {
239 codegen_unit: Arc<CodegenUnit<'tcx>>,
240 llvm_module: &'ll crate::ModuleLlvm,
242 // An interesting part of Windows which MSVC forces our hand on (and
243 // apparently MinGW didn't) is the usage of `dllimport` and `dllexport`
244 // attributes in LLVM IR as well as native dependencies (in C these
245 // correspond to `__declspec(dllimport)`).
247 // Whenever a dynamic library is built by MSVC it must have its public
248 // interface specified by functions tagged with `dllexport` or otherwise
249 // they're not available to be linked against. This poses a few problems
250 // for the compiler, some of which are somewhat fundamental, but we use
251 // the `use_dll_storage_attrs` variable below to attach the `dllexport`
252 // attribute to all LLVM functions that are exported e.g., they're
253 // already tagged with external linkage). This is suboptimal for a few
256 // * If an object file will never be included in a dynamic library,
257 // there's no need to attach the dllexport attribute. Most object
258 // files in Rust are not destined to become part of a dll as binaries
259 // are statically linked by default.
260 // * If the compiler is emitting both an rlib and a dylib, the same
261 // source object file is currently used but with MSVC this may be less
262 // feasible. The compiler may be able to get around this, but it may
263 // involve some invasive changes to deal with this.
265 // The flipside of this situation is that whenever you link to a dll and
266 // you import a function from it, the import should be tagged with
267 // `dllimport`. At this time, however, the compiler does not emit
268 // `dllimport` for any declarations other than constants (where it is
269 // required), which is again suboptimal for even more reasons!
271 // * Calling a function imported from another dll without using
272 // `dllimport` causes the linker/compiler to have extra overhead (one
273 // `jmp` instruction on x86) when calling the function.
274 // * The same object file may be used in different circumstances, so a
275 // function may be imported from a dll if the object is linked into a
276 // dll, but it may be just linked against if linked into an rlib.
277 // * The compiler has no knowledge about whether native functions should
278 // be tagged dllimport or not.
280 // For now the compiler takes the perf hit (I do not have any numbers to
281 // this effect) by marking very little as `dllimport` and praying the
282 // linker will take care of everything. Fixing this problem will likely
283 // require adding a few attributes to Rust itself (feature gated at the
284 // start) and then strongly recommending static linkage on MSVC!
285 let use_dll_storage_attrs = tcx.sess.target.target.options.is_like_msvc;
287 let check_overflow = tcx.sess.overflow_checks();
289 let tls_model = get_tls_model(&tcx.sess);
291 let (llcx, llmod) = (&*llvm_module.llcx, llvm_module.llmod());
293 let dbg_cx = if tcx.sess.opts.debuginfo != DebugInfo::None {
294 let dctx = debuginfo::CrateDebugContext::new(llmod);
295 debuginfo::metadata::compile_unit_metadata(tcx, &codegen_unit.name().as_str(), &dctx);
301 let isize_ty = Type::ix_llcx(llcx, tcx.data_layout.pointer_size.bits());
306 use_dll_storage_attrs,
311 instances: Default::default(),
312 vtables: Default::default(),
313 const_cstr_cache: Default::default(),
314 const_unsized: Default::default(),
315 const_globals: Default::default(),
316 statics_to_rauw: RefCell::new(Vec::new()),
317 used_statics: RefCell::new(Vec::new()),
318 lltypes: Default::default(),
319 scalar_lltypes: Default::default(),
320 pointee_infos: Default::default(),
323 eh_personality: Cell::new(None),
324 rust_try_fn: Cell::new(None),
325 intrinsics: Default::default(),
326 local_gen_sym_counter: Cell::new(0),
330 crate fn statics_to_rauw(&self) -> &RefCell<Vec<(&'ll Value, &'ll Value)>> {
331 &self.statics_to_rauw
335 impl MiscMethods<'tcx> for CodegenCx<'ll, 'tcx> {
338 ) -> &RefCell<FxHashMap<(Ty<'tcx>, Option<ty::PolyExistentialTraitRef<'tcx>>), &'ll Value>>
343 fn get_fn(&self, instance: Instance<'tcx>) -> &'ll Value {
344 get_fn(self, instance)
347 fn get_fn_addr(&self, instance: Instance<'tcx>) -> &'ll Value {
348 get_fn(self, instance)
351 fn eh_personality(&self) -> &'ll Value {
352 // The exception handling personality function.
354 // If our compilation unit has the `eh_personality` lang item somewhere
355 // within it, then we just need to codegen that. Otherwise, we're
356 // building an rlib which will depend on some upstream implementation of
357 // this function, so we just codegen a generic reference to it. We don't
358 // specify any of the types for the function, we just make it a symbol
359 // that LLVM can later use.
361 // Note that MSVC is a little special here in that we don't use the
362 // `eh_personality` lang item at all. Currently LLVM has support for
363 // both Dwarf and SEH unwind mechanisms for MSVC targets and uses the
364 // *name of the personality function* to decide what kind of unwind side
365 // tables/landing pads to emit. It looks like Dwarf is used by default,
366 // injecting a dependency on the `_Unwind_Resume` symbol for resuming
367 // an "exception", but for MSVC we want to force SEH. This means that we
368 // can't actually have the personality function be our standard
369 // `rust_eh_personality` function, but rather we wired it up to the
370 // CRT's custom personality function, which forces LLVM to consider
371 // landing pads as "landing pads for SEH".
372 if let Some(llpersonality) = self.eh_personality.get() {
373 return llpersonality;
376 let llfn = match tcx.lang_items().eh_personality() {
377 Some(def_id) if !wants_msvc_seh(self.sess()) => self.get_fn_addr(
378 ty::Instance::resolve(
380 ty::ParamEnv::reveal_all(),
382 tcx.intern_substs(&[]),
387 let name = if wants_msvc_seh(self.sess()) {
390 "rust_eh_personality"
392 let fty = self.type_variadic_func(&[], self.type_i32());
393 self.declare_cfn(name, fty)
396 attributes::apply_target_cpu_attr(self, llfn);
397 self.eh_personality.set(Some(llfn));
401 fn sess(&self) -> &Session {
405 fn check_overflow(&self) -> bool {
409 fn codegen_unit(&self) -> &Arc<CodegenUnit<'tcx>> {
413 fn used_statics(&self) -> &RefCell<Vec<&'ll Value>> {
417 fn set_frame_pointer_elimination(&self, llfn: &'ll Value) {
418 attributes::set_frame_pointer_elimination(self, llfn)
421 fn apply_target_cpu_attr(&self, llfn: &'ll Value) {
422 attributes::apply_target_cpu_attr(self, llfn)
425 fn create_used_variable(&self) {
426 let name = const_cstr!("llvm.used");
427 let section = const_cstr!("llvm.metadata");
429 self.const_array(&self.type_ptr_to(self.type_i8()), &*self.used_statics.borrow());
432 let g = llvm::LLVMAddGlobal(self.llmod, self.val_ty(array), name.as_ptr());
433 llvm::LLVMSetInitializer(g, array);
434 llvm::LLVMRustSetLinkage(g, llvm::Linkage::AppendingLinkage);
435 llvm::LLVMSetSection(g, section.as_ptr());
440 impl CodegenCx<'b, 'tcx> {
441 crate fn get_intrinsic(&self, key: &str) -> &'b Value {
442 if let Some(v) = self.intrinsics.borrow().get(key).cloned() {
446 self.declare_intrinsic(key).unwrap_or_else(|| bug!("unknown intrinsic '{}'", key))
452 args: Option<&[&'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::SetUnnamedAddress(f, llvm::UnnamedAddr::No);
462 self.intrinsics.borrow_mut().insert(name, f);
466 fn declare_intrinsic(&self, key: &str) -> Option<&'b Value> {
468 ($name:expr, fn() -> $ret:expr) => (
470 return Some(self.insert_intrinsic($name, Some(&[]), $ret));
473 ($name:expr, fn(...) -> $ret:expr) => (
475 return Some(self.insert_intrinsic($name, None, $ret));
478 ($name:expr, fn($($arg:expr),*) -> $ret:expr) => (
480 return Some(self.insert_intrinsic($name, Some(&[$($arg),*]), $ret));
484 macro_rules! mk_struct {
485 ($($field_ty:expr),*) => (self.type_struct( &[$($field_ty),*], false))
488 let i8p = self.type_i8p();
489 let void = self.type_void();
490 let i1 = self.type_i1();
491 let t_i8 = self.type_i8();
492 let t_i16 = self.type_i16();
493 let t_i32 = self.type_i32();
494 let t_i64 = self.type_i64();
495 let t_i128 = self.type_i128();
496 let t_f32 = self.type_f32();
497 let t_f64 = self.type_f64();
499 macro_rules! vector_types {
500 ($id_out:ident: $elem_ty:ident, $len:expr) => {
501 let $id_out = self.type_vector($elem_ty, $len);
503 ($($id_out:ident: $elem_ty:ident, $len:expr;)*) => {
504 $(vector_types!($id_out: $elem_ty, $len);)*
518 ifn!("llvm.trap", fn() -> void);
519 ifn!("llvm.debugtrap", fn() -> void);
520 ifn!("llvm.frameaddress", fn(t_i32) -> i8p);
521 ifn!("llvm.sideeffect", fn() -> void);
523 ifn!("llvm.powi.f32", fn(t_f32, t_i32) -> t_f32);
524 ifn!("llvm.powi.v2f32", fn(t_v2f32, t_i32) -> t_v2f32);
525 ifn!("llvm.powi.v4f32", fn(t_v4f32, t_i32) -> t_v4f32);
526 ifn!("llvm.powi.v8f32", fn(t_v8f32, t_i32) -> t_v8f32);
527 ifn!("llvm.powi.v16f32", fn(t_v16f32, t_i32) -> t_v16f32);
528 ifn!("llvm.powi.f64", fn(t_f64, t_i32) -> t_f64);
529 ifn!("llvm.powi.v2f64", fn(t_v2f64, t_i32) -> t_v2f64);
530 ifn!("llvm.powi.v4f64", fn(t_v4f64, t_i32) -> t_v4f64);
531 ifn!("llvm.powi.v8f64", fn(t_v8f64, t_i32) -> t_v8f64);
533 ifn!("llvm.pow.f32", fn(t_f32, t_f32) -> t_f32);
534 ifn!("llvm.pow.v2f32", fn(t_v2f32, t_v2f32) -> t_v2f32);
535 ifn!("llvm.pow.v4f32", fn(t_v4f32, t_v4f32) -> t_v4f32);
536 ifn!("llvm.pow.v8f32", fn(t_v8f32, t_v8f32) -> t_v8f32);
537 ifn!("llvm.pow.v16f32", fn(t_v16f32, t_v16f32) -> t_v16f32);
538 ifn!("llvm.pow.f64", fn(t_f64, t_f64) -> t_f64);
539 ifn!("llvm.pow.v2f64", fn(t_v2f64, t_v2f64) -> t_v2f64);
540 ifn!("llvm.pow.v4f64", fn(t_v4f64, t_v4f64) -> t_v4f64);
541 ifn!("llvm.pow.v8f64", fn(t_v8f64, t_v8f64) -> t_v8f64);
543 ifn!("llvm.sqrt.f32", fn(t_f32) -> t_f32);
544 ifn!("llvm.sqrt.v2f32", fn(t_v2f32) -> t_v2f32);
545 ifn!("llvm.sqrt.v4f32", fn(t_v4f32) -> t_v4f32);
546 ifn!("llvm.sqrt.v8f32", fn(t_v8f32) -> t_v8f32);
547 ifn!("llvm.sqrt.v16f32", fn(t_v16f32) -> t_v16f32);
548 ifn!("llvm.sqrt.f64", fn(t_f64) -> t_f64);
549 ifn!("llvm.sqrt.v2f64", fn(t_v2f64) -> t_v2f64);
550 ifn!("llvm.sqrt.v4f64", fn(t_v4f64) -> t_v4f64);
551 ifn!("llvm.sqrt.v8f64", fn(t_v8f64) -> t_v8f64);
553 ifn!("llvm.sin.f32", fn(t_f32) -> t_f32);
554 ifn!("llvm.sin.v2f32", fn(t_v2f32) -> t_v2f32);
555 ifn!("llvm.sin.v4f32", fn(t_v4f32) -> t_v4f32);
556 ifn!("llvm.sin.v8f32", fn(t_v8f32) -> t_v8f32);
557 ifn!("llvm.sin.v16f32", fn(t_v16f32) -> t_v16f32);
558 ifn!("llvm.sin.f64", fn(t_f64) -> t_f64);
559 ifn!("llvm.sin.v2f64", fn(t_v2f64) -> t_v2f64);
560 ifn!("llvm.sin.v4f64", fn(t_v4f64) -> t_v4f64);
561 ifn!("llvm.sin.v8f64", fn(t_v8f64) -> t_v8f64);
563 ifn!("llvm.cos.f32", fn(t_f32) -> t_f32);
564 ifn!("llvm.cos.v2f32", fn(t_v2f32) -> t_v2f32);
565 ifn!("llvm.cos.v4f32", fn(t_v4f32) -> t_v4f32);
566 ifn!("llvm.cos.v8f32", fn(t_v8f32) -> t_v8f32);
567 ifn!("llvm.cos.v16f32", fn(t_v16f32) -> t_v16f32);
568 ifn!("llvm.cos.f64", fn(t_f64) -> t_f64);
569 ifn!("llvm.cos.v2f64", fn(t_v2f64) -> t_v2f64);
570 ifn!("llvm.cos.v4f64", fn(t_v4f64) -> t_v4f64);
571 ifn!("llvm.cos.v8f64", fn(t_v8f64) -> t_v8f64);
573 ifn!("llvm.exp.f32", fn(t_f32) -> t_f32);
574 ifn!("llvm.exp.v2f32", fn(t_v2f32) -> t_v2f32);
575 ifn!("llvm.exp.v4f32", fn(t_v4f32) -> t_v4f32);
576 ifn!("llvm.exp.v8f32", fn(t_v8f32) -> t_v8f32);
577 ifn!("llvm.exp.v16f32", fn(t_v16f32) -> t_v16f32);
578 ifn!("llvm.exp.f64", fn(t_f64) -> t_f64);
579 ifn!("llvm.exp.v2f64", fn(t_v2f64) -> t_v2f64);
580 ifn!("llvm.exp.v4f64", fn(t_v4f64) -> t_v4f64);
581 ifn!("llvm.exp.v8f64", fn(t_v8f64) -> t_v8f64);
583 ifn!("llvm.exp2.f32", fn(t_f32) -> t_f32);
584 ifn!("llvm.exp2.v2f32", fn(t_v2f32) -> t_v2f32);
585 ifn!("llvm.exp2.v4f32", fn(t_v4f32) -> t_v4f32);
586 ifn!("llvm.exp2.v8f32", fn(t_v8f32) -> t_v8f32);
587 ifn!("llvm.exp2.v16f32", fn(t_v16f32) -> t_v16f32);
588 ifn!("llvm.exp2.f64", fn(t_f64) -> t_f64);
589 ifn!("llvm.exp2.v2f64", fn(t_v2f64) -> t_v2f64);
590 ifn!("llvm.exp2.v4f64", fn(t_v4f64) -> t_v4f64);
591 ifn!("llvm.exp2.v8f64", fn(t_v8f64) -> t_v8f64);
593 ifn!("llvm.log.f32", fn(t_f32) -> t_f32);
594 ifn!("llvm.log.v2f32", fn(t_v2f32) -> t_v2f32);
595 ifn!("llvm.log.v4f32", fn(t_v4f32) -> t_v4f32);
596 ifn!("llvm.log.v8f32", fn(t_v8f32) -> t_v8f32);
597 ifn!("llvm.log.v16f32", fn(t_v16f32) -> t_v16f32);
598 ifn!("llvm.log.f64", fn(t_f64) -> t_f64);
599 ifn!("llvm.log.v2f64", fn(t_v2f64) -> t_v2f64);
600 ifn!("llvm.log.v4f64", fn(t_v4f64) -> t_v4f64);
601 ifn!("llvm.log.v8f64", fn(t_v8f64) -> t_v8f64);
603 ifn!("llvm.log10.f32", fn(t_f32) -> t_f32);
604 ifn!("llvm.log10.v2f32", fn(t_v2f32) -> t_v2f32);
605 ifn!("llvm.log10.v4f32", fn(t_v4f32) -> t_v4f32);
606 ifn!("llvm.log10.v8f32", fn(t_v8f32) -> t_v8f32);
607 ifn!("llvm.log10.v16f32", fn(t_v16f32) -> t_v16f32);
608 ifn!("llvm.log10.f64", fn(t_f64) -> t_f64);
609 ifn!("llvm.log10.v2f64", fn(t_v2f64) -> t_v2f64);
610 ifn!("llvm.log10.v4f64", fn(t_v4f64) -> t_v4f64);
611 ifn!("llvm.log10.v8f64", fn(t_v8f64) -> t_v8f64);
613 ifn!("llvm.log2.f32", fn(t_f32) -> t_f32);
614 ifn!("llvm.log2.v2f32", fn(t_v2f32) -> t_v2f32);
615 ifn!("llvm.log2.v4f32", fn(t_v4f32) -> t_v4f32);
616 ifn!("llvm.log2.v8f32", fn(t_v8f32) -> t_v8f32);
617 ifn!("llvm.log2.v16f32", fn(t_v16f32) -> t_v16f32);
618 ifn!("llvm.log2.f64", fn(t_f64) -> t_f64);
619 ifn!("llvm.log2.v2f64", fn(t_v2f64) -> t_v2f64);
620 ifn!("llvm.log2.v4f64", fn(t_v4f64) -> t_v4f64);
621 ifn!("llvm.log2.v8f64", fn(t_v8f64) -> t_v8f64);
623 ifn!("llvm.fma.f32", fn(t_f32, t_f32, t_f32) -> t_f32);
624 ifn!("llvm.fma.v2f32", fn(t_v2f32, t_v2f32, t_v2f32) -> t_v2f32);
625 ifn!("llvm.fma.v4f32", fn(t_v4f32, t_v4f32, t_v4f32) -> t_v4f32);
626 ifn!("llvm.fma.v8f32", fn(t_v8f32, t_v8f32, t_v8f32) -> t_v8f32);
627 ifn!("llvm.fma.v16f32", fn(t_v16f32, t_v16f32, t_v16f32) -> t_v16f32);
628 ifn!("llvm.fma.f64", fn(t_f64, t_f64, t_f64) -> t_f64);
629 ifn!("llvm.fma.v2f64", fn(t_v2f64, t_v2f64, t_v2f64) -> t_v2f64);
630 ifn!("llvm.fma.v4f64", fn(t_v4f64, t_v4f64, t_v4f64) -> t_v4f64);
631 ifn!("llvm.fma.v8f64", fn(t_v8f64, t_v8f64, t_v8f64) -> t_v8f64);
633 ifn!("llvm.fabs.f32", fn(t_f32) -> t_f32);
634 ifn!("llvm.fabs.v2f32", fn(t_v2f32) -> t_v2f32);
635 ifn!("llvm.fabs.v4f32", fn(t_v4f32) -> t_v4f32);
636 ifn!("llvm.fabs.v8f32", fn(t_v8f32) -> t_v8f32);
637 ifn!("llvm.fabs.v16f32", fn(t_v16f32) -> t_v16f32);
638 ifn!("llvm.fabs.f64", fn(t_f64) -> t_f64);
639 ifn!("llvm.fabs.v2f64", fn(t_v2f64) -> t_v2f64);
640 ifn!("llvm.fabs.v4f64", fn(t_v4f64) -> t_v4f64);
641 ifn!("llvm.fabs.v8f64", fn(t_v8f64) -> t_v8f64);
643 ifn!("llvm.minnum.f32", fn(t_f32, t_f32) -> t_f32);
644 ifn!("llvm.minnum.f64", fn(t_f64, t_f64) -> t_f64);
645 ifn!("llvm.maxnum.f32", fn(t_f32, t_f32) -> t_f32);
646 ifn!("llvm.maxnum.f64", fn(t_f64, t_f64) -> t_f64);
648 ifn!("llvm.floor.f32", fn(t_f32) -> t_f32);
649 ifn!("llvm.floor.v2f32", fn(t_v2f32) -> t_v2f32);
650 ifn!("llvm.floor.v4f32", fn(t_v4f32) -> t_v4f32);
651 ifn!("llvm.floor.v8f32", fn(t_v8f32) -> t_v8f32);
652 ifn!("llvm.floor.v16f32", fn(t_v16f32) -> t_v16f32);
653 ifn!("llvm.floor.f64", fn(t_f64) -> t_f64);
654 ifn!("llvm.floor.v2f64", fn(t_v2f64) -> t_v2f64);
655 ifn!("llvm.floor.v4f64", fn(t_v4f64) -> t_v4f64);
656 ifn!("llvm.floor.v8f64", fn(t_v8f64) -> t_v8f64);
658 ifn!("llvm.ceil.f32", fn(t_f32) -> t_f32);
659 ifn!("llvm.ceil.v2f32", fn(t_v2f32) -> t_v2f32);
660 ifn!("llvm.ceil.v4f32", fn(t_v4f32) -> t_v4f32);
661 ifn!("llvm.ceil.v8f32", fn(t_v8f32) -> t_v8f32);
662 ifn!("llvm.ceil.v16f32", fn(t_v16f32) -> t_v16f32);
663 ifn!("llvm.ceil.f64", fn(t_f64) -> t_f64);
664 ifn!("llvm.ceil.v2f64", fn(t_v2f64) -> t_v2f64);
665 ifn!("llvm.ceil.v4f64", fn(t_v4f64) -> t_v4f64);
666 ifn!("llvm.ceil.v8f64", fn(t_v8f64) -> t_v8f64);
668 ifn!("llvm.trunc.f32", fn(t_f32) -> t_f32);
669 ifn!("llvm.trunc.f64", fn(t_f64) -> t_f64);
671 ifn!("llvm.copysign.f32", fn(t_f32, t_f32) -> t_f32);
672 ifn!("llvm.copysign.f64", fn(t_f64, t_f64) -> t_f64);
673 ifn!("llvm.round.f32", fn(t_f32) -> t_f32);
674 ifn!("llvm.round.f64", fn(t_f64) -> t_f64);
676 ifn!("llvm.rint.f32", fn(t_f32) -> t_f32);
677 ifn!("llvm.rint.f64", fn(t_f64) -> t_f64);
678 ifn!("llvm.nearbyint.f32", fn(t_f32) -> t_f32);
679 ifn!("llvm.nearbyint.f64", fn(t_f64) -> t_f64);
681 ifn!("llvm.ctpop.i8", fn(t_i8) -> t_i8);
682 ifn!("llvm.ctpop.i16", fn(t_i16) -> t_i16);
683 ifn!("llvm.ctpop.i32", fn(t_i32) -> t_i32);
684 ifn!("llvm.ctpop.i64", fn(t_i64) -> t_i64);
685 ifn!("llvm.ctpop.i128", fn(t_i128) -> t_i128);
687 ifn!("llvm.ctlz.i8", fn(t_i8, i1) -> t_i8);
688 ifn!("llvm.ctlz.i16", fn(t_i16, i1) -> t_i16);
689 ifn!("llvm.ctlz.i32", fn(t_i32, i1) -> t_i32);
690 ifn!("llvm.ctlz.i64", fn(t_i64, i1) -> t_i64);
691 ifn!("llvm.ctlz.i128", fn(t_i128, i1) -> t_i128);
693 ifn!("llvm.cttz.i8", fn(t_i8, i1) -> t_i8);
694 ifn!("llvm.cttz.i16", fn(t_i16, i1) -> t_i16);
695 ifn!("llvm.cttz.i32", fn(t_i32, i1) -> t_i32);
696 ifn!("llvm.cttz.i64", fn(t_i64, i1) -> t_i64);
697 ifn!("llvm.cttz.i128", fn(t_i128, i1) -> t_i128);
699 ifn!("llvm.bswap.i16", fn(t_i16) -> t_i16);
700 ifn!("llvm.bswap.i32", fn(t_i32) -> t_i32);
701 ifn!("llvm.bswap.i64", fn(t_i64) -> t_i64);
702 ifn!("llvm.bswap.i128", fn(t_i128) -> t_i128);
704 ifn!("llvm.bitreverse.i8", fn(t_i8) -> t_i8);
705 ifn!("llvm.bitreverse.i16", fn(t_i16) -> t_i16);
706 ifn!("llvm.bitreverse.i32", fn(t_i32) -> t_i32);
707 ifn!("llvm.bitreverse.i64", fn(t_i64) -> t_i64);
708 ifn!("llvm.bitreverse.i128", fn(t_i128) -> t_i128);
710 ifn!("llvm.fshl.i8", fn(t_i8, t_i8, t_i8) -> t_i8);
711 ifn!("llvm.fshl.i16", fn(t_i16, t_i16, t_i16) -> t_i16);
712 ifn!("llvm.fshl.i32", fn(t_i32, t_i32, t_i32) -> t_i32);
713 ifn!("llvm.fshl.i64", fn(t_i64, t_i64, t_i64) -> t_i64);
714 ifn!("llvm.fshl.i128", fn(t_i128, t_i128, t_i128) -> t_i128);
716 ifn!("llvm.fshr.i8", fn(t_i8, t_i8, t_i8) -> t_i8);
717 ifn!("llvm.fshr.i16", fn(t_i16, t_i16, t_i16) -> t_i16);
718 ifn!("llvm.fshr.i32", fn(t_i32, t_i32, t_i32) -> t_i32);
719 ifn!("llvm.fshr.i64", fn(t_i64, t_i64, t_i64) -> t_i64);
720 ifn!("llvm.fshr.i128", fn(t_i128, t_i128, t_i128) -> t_i128);
722 ifn!("llvm.sadd.with.overflow.i8", fn(t_i8, t_i8) -> mk_struct! {t_i8, i1});
723 ifn!("llvm.sadd.with.overflow.i16", fn(t_i16, t_i16) -> mk_struct! {t_i16, i1});
724 ifn!("llvm.sadd.with.overflow.i32", fn(t_i32, t_i32) -> mk_struct! {t_i32, i1});
725 ifn!("llvm.sadd.with.overflow.i64", fn(t_i64, t_i64) -> mk_struct! {t_i64, i1});
726 ifn!("llvm.sadd.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct! {t_i128, i1});
728 ifn!("llvm.uadd.with.overflow.i8", fn(t_i8, t_i8) -> mk_struct! {t_i8, i1});
729 ifn!("llvm.uadd.with.overflow.i16", fn(t_i16, t_i16) -> mk_struct! {t_i16, i1});
730 ifn!("llvm.uadd.with.overflow.i32", fn(t_i32, t_i32) -> mk_struct! {t_i32, i1});
731 ifn!("llvm.uadd.with.overflow.i64", fn(t_i64, t_i64) -> mk_struct! {t_i64, i1});
732 ifn!("llvm.uadd.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct! {t_i128, i1});
734 ifn!("llvm.ssub.with.overflow.i8", fn(t_i8, t_i8) -> mk_struct! {t_i8, i1});
735 ifn!("llvm.ssub.with.overflow.i16", fn(t_i16, t_i16) -> mk_struct! {t_i16, i1});
736 ifn!("llvm.ssub.with.overflow.i32", fn(t_i32, t_i32) -> mk_struct! {t_i32, i1});
737 ifn!("llvm.ssub.with.overflow.i64", fn(t_i64, t_i64) -> mk_struct! {t_i64, i1});
738 ifn!("llvm.ssub.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct! {t_i128, i1});
740 ifn!("llvm.usub.with.overflow.i8", fn(t_i8, t_i8) -> mk_struct! {t_i8, i1});
741 ifn!("llvm.usub.with.overflow.i16", fn(t_i16, t_i16) -> mk_struct! {t_i16, i1});
742 ifn!("llvm.usub.with.overflow.i32", fn(t_i32, t_i32) -> mk_struct! {t_i32, i1});
743 ifn!("llvm.usub.with.overflow.i64", fn(t_i64, t_i64) -> mk_struct! {t_i64, i1});
744 ifn!("llvm.usub.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct! {t_i128, i1});
746 ifn!("llvm.smul.with.overflow.i8", fn(t_i8, t_i8) -> mk_struct! {t_i8, i1});
747 ifn!("llvm.smul.with.overflow.i16", fn(t_i16, t_i16) -> mk_struct! {t_i16, i1});
748 ifn!("llvm.smul.with.overflow.i32", fn(t_i32, t_i32) -> mk_struct! {t_i32, i1});
749 ifn!("llvm.smul.with.overflow.i64", fn(t_i64, t_i64) -> mk_struct! {t_i64, i1});
750 ifn!("llvm.smul.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct! {t_i128, i1});
752 ifn!("llvm.umul.with.overflow.i8", fn(t_i8, t_i8) -> mk_struct! {t_i8, i1});
753 ifn!("llvm.umul.with.overflow.i16", fn(t_i16, t_i16) -> mk_struct! {t_i16, i1});
754 ifn!("llvm.umul.with.overflow.i32", fn(t_i32, t_i32) -> mk_struct! {t_i32, i1});
755 ifn!("llvm.umul.with.overflow.i64", fn(t_i64, t_i64) -> mk_struct! {t_i64, i1});
756 ifn!("llvm.umul.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct! {t_i128, i1});
758 ifn!("llvm.sadd.sat.i8", fn(t_i8, t_i8) -> t_i8);
759 ifn!("llvm.sadd.sat.i16", fn(t_i16, t_i16) -> t_i16);
760 ifn!("llvm.sadd.sat.i32", fn(t_i32, t_i32) -> t_i32);
761 ifn!("llvm.sadd.sat.i64", fn(t_i64, t_i64) -> t_i64);
762 ifn!("llvm.sadd.sat.i128", fn(t_i128, t_i128) -> t_i128);
764 ifn!("llvm.uadd.sat.i8", fn(t_i8, t_i8) -> t_i8);
765 ifn!("llvm.uadd.sat.i16", fn(t_i16, t_i16) -> t_i16);
766 ifn!("llvm.uadd.sat.i32", fn(t_i32, t_i32) -> t_i32);
767 ifn!("llvm.uadd.sat.i64", fn(t_i64, t_i64) -> t_i64);
768 ifn!("llvm.uadd.sat.i128", fn(t_i128, t_i128) -> t_i128);
770 ifn!("llvm.ssub.sat.i8", fn(t_i8, t_i8) -> t_i8);
771 ifn!("llvm.ssub.sat.i16", fn(t_i16, t_i16) -> t_i16);
772 ifn!("llvm.ssub.sat.i32", fn(t_i32, t_i32) -> t_i32);
773 ifn!("llvm.ssub.sat.i64", fn(t_i64, t_i64) -> t_i64);
774 ifn!("llvm.ssub.sat.i128", fn(t_i128, t_i128) -> t_i128);
776 ifn!("llvm.usub.sat.i8", fn(t_i8, t_i8) -> t_i8);
777 ifn!("llvm.usub.sat.i16", fn(t_i16, t_i16) -> t_i16);
778 ifn!("llvm.usub.sat.i32", fn(t_i32, t_i32) -> t_i32);
779 ifn!("llvm.usub.sat.i64", fn(t_i64, t_i64) -> t_i64);
780 ifn!("llvm.usub.sat.i128", fn(t_i128, t_i128) -> t_i128);
782 ifn!("llvm.lifetime.start.p0i8", fn(t_i64, i8p) -> void);
783 ifn!("llvm.lifetime.end.p0i8", fn(t_i64, i8p) -> void);
785 ifn!("llvm.expect.i1", fn(i1, i1) -> i1);
786 ifn!("llvm.eh.typeid.for", fn(i8p) -> t_i32);
787 ifn!("llvm.localescape", fn(...) -> void);
788 ifn!("llvm.localrecover", fn(i8p, i8p, t_i32) -> i8p);
789 ifn!("llvm.x86.seh.recoverfp", fn(i8p, i8p) -> i8p);
791 ifn!("llvm.assume", fn(i1) -> void);
792 ifn!("llvm.prefetch", fn(i8p, t_i32, t_i32, t_i32) -> void);
794 // variadic intrinsics
795 ifn!("llvm.va_start", fn(i8p) -> void);
796 ifn!("llvm.va_end", fn(i8p) -> void);
797 ifn!("llvm.va_copy", fn(i8p, i8p) -> void);
799 if self.sess().opts.debuginfo != DebugInfo::None {
800 ifn!("llvm.dbg.declare", fn(self.type_metadata(), self.type_metadata()) -> void);
801 ifn!("llvm.dbg.value", fn(self.type_metadata(), t_i64, self.type_metadata()) -> void);
807 impl<'b, 'tcx> CodegenCx<'b, 'tcx> {
808 /// Generates a new symbol name with the given prefix. This symbol name must
809 /// only be used for definitions with `internal` or `private` linkage.
810 pub fn generate_local_symbol_name(&self, prefix: &str) -> String {
811 let idx = self.local_gen_sym_counter.get();
812 self.local_gen_sym_counter.set(idx + 1);
813 // Include a '.' character, so there can be no accidental conflicts with
814 // user defined names
815 let mut name = String::with_capacity(prefix.len() + 6);
816 name.push_str(prefix);
818 base_n::push_str(idx as u128, base_n::ALPHANUMERIC_ONLY, &mut name);
823 impl ty::layout::HasDataLayout for CodegenCx<'ll, 'tcx> {
824 fn data_layout(&self) -> &ty::layout::TargetDataLayout {
825 &self.tcx.data_layout
829 impl HasTargetSpec for CodegenCx<'ll, 'tcx> {
830 fn target_spec(&self) -> &Target {
831 &self.tcx.sess.target.target
835 impl ty::layout::HasTyCtxt<'tcx> for CodegenCx<'ll, 'tcx> {
836 fn tcx(&self) -> TyCtxt<'tcx> {
841 impl LayoutOf for CodegenCx<'ll, 'tcx> {
843 type TyLayout = TyLayout<'tcx>;
845 fn layout_of(&self, ty: Ty<'tcx>) -> Self::TyLayout {
846 self.spanned_layout_of(ty, DUMMY_SP)
849 fn spanned_layout_of(&self, ty: Ty<'tcx>, span: Span) -> Self::TyLayout {
850 self.tcx.layout_of(ty::ParamEnv::reveal_all().and(ty)).unwrap_or_else(|e| {
851 if let LayoutError::SizeOverflow(_) = e {
852 self.sess().span_fatal(span, &e.to_string())
854 bug!("failed to get layout for `{}`: {}", ty, e)
860 impl<'tcx, 'll> HasParamEnv<'tcx> for CodegenCx<'ll, 'tcx> {
861 fn param_env(&self) -> ty::ParamEnv<'tcx> {
862 ty::ParamEnv::reveal_all()