6 use crate::value::Value;
7 use rustc::dep_graph::DepGraphSafe;
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;
16 use rustc::mir::mono::CodegenUnit;
17 use rustc::session::config::{self, DebugInfo};
18 use rustc::session::Session;
19 use rustc::ty::layout::{
20 FnAbiExt, LayoutError, LayoutOf, PointeeInfo, Size, TyLayout, VariantIdx, HasParamEnv
22 use rustc::ty::{self, Ty, TyCtxt, Instance};
23 use rustc::util::nodemap::FxHashMap;
24 use rustc_target::spec::{HasTargetSpec, Target};
25 use rustc_codegen_ssa::base::wants_msvc_seh;
26 use crate::callee::get_fn;
27 use rustc_data_structures::const_cstr;
30 use std::cell::{Cell, RefCell};
34 use syntax::symbol::Symbol;
35 use syntax::source_map::{DUMMY_SP, Span};
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(
108 |&&arg| arg.0 == reloc_model_arg) {
111 sess.err(&format!("{:?} is not a valid relocation mode",
113 sess.abort_if_errors();
119 fn get_tls_model(sess: &Session) -> llvm::ThreadLocalMode {
120 let tls_model_arg = match sess.opts.debugging_opts.tls_model {
121 Some(ref s) => &s[..],
122 None => &sess.target.target.options.tls_model[..],
125 match crate::back::write::TLS_MODEL_ARGS.iter().find(
126 |&&arg| arg.0 == tls_model_arg) {
129 sess.err(&format!("{:?} is not a valid TLS model",
131 sess.abort_if_errors();
137 fn is_any_library(sess: &Session) -> bool {
138 sess.crate_types.borrow().iter().any(|ty| {
139 *ty != config::CrateType::Executable
143 pub fn is_pie_binary(sess: &Session) -> bool {
144 !is_any_library(sess) && get_reloc_model(sess) == llvm::RelocMode::PIC
147 fn strip_function_ptr_alignment(data_layout: String) -> String {
148 // FIXME: Make this more general.
149 data_layout.replace("-Fi8-", "-")
152 pub unsafe fn create_module(
154 llcx: &'ll llvm::Context,
156 ) -> &'ll llvm::Module {
158 let mod_name = SmallCStr::new(mod_name);
159 let llmod = llvm::LLVMModuleCreateWithNameInContext(mod_name.as_ptr(), llcx);
161 let mut target_data_layout = sess.target.target.data_layout.clone();
162 if llvm_util::get_major_version() < 9 {
163 target_data_layout = strip_function_ptr_alignment(target_data_layout);
166 // Ensure the data-layout values hardcoded remain the defaults.
167 if sess.target.target.options.is_builtin {
168 let tm = crate::back::write::create_informational_target_machine(&tcx.sess, false);
169 llvm::LLVMRustSetDataLayoutFromTargetMachine(llmod, tm);
170 llvm::LLVMRustDisposeTargetMachine(tm);
172 let llvm_data_layout = llvm::LLVMGetDataLayout(llmod);
173 let llvm_data_layout = str::from_utf8(CStr::from_ptr(llvm_data_layout).to_bytes())
174 .ok().expect("got a non-UTF8 data-layout from LLVM");
176 // Unfortunately LLVM target specs change over time, and right now we
177 // don't have proper support to work with any more than one
178 // `data_layout` than the one that is in the rust-lang/rust repo. If
179 // this compiler is configured against a custom LLVM, we may have a
180 // differing data layout, even though we should update our own to use
183 // As an interim hack, if CFG_LLVM_ROOT is not an empty string then we
184 // disable this check entirely as we may be configured with something
185 // that has a different target layout.
187 // Unsure if this will actually cause breakage when rustc is configured
191 let cfg_llvm_root = option_env!("CFG_LLVM_ROOT").unwrap_or("");
192 let custom_llvm_used = cfg_llvm_root.trim() != "";
194 if !custom_llvm_used && target_data_layout != llvm_data_layout {
195 bug!("data-layout for builtin `{}` target, `{}`, \
196 differs from LLVM default, `{}`",
197 sess.target.target.llvm_target,
203 let data_layout = SmallCStr::new(&target_data_layout);
204 llvm::LLVMSetDataLayout(llmod, data_layout.as_ptr());
206 let llvm_target = SmallCStr::new(&sess.target.target.llvm_target);
207 llvm::LLVMRustSetNormalizedTarget(llmod, llvm_target.as_ptr());
209 if get_reloc_model(sess) == llvm::RelocMode::PIC {
210 llvm::LLVMRustSetModulePICLevel(llmod);
213 if is_pie_binary(sess) {
214 llvm::LLVMRustSetModulePIELevel(llmod);
217 // If skipping the PLT is enabled, we need to add some module metadata
218 // to ensure intrinsic calls don't use it.
219 if !sess.needs_plt() {
220 let avoid_plt = "RtLibUseGOT\0".as_ptr().cast();
221 llvm::LLVMRustAddModuleFlag(llmod, avoid_plt, 1);
227 impl<'ll, 'tcx> CodegenCx<'ll, 'tcx> {
230 codegen_unit: Arc<CodegenUnit<'tcx>>,
231 llvm_module: &'ll crate::ModuleLlvm,
233 // An interesting part of Windows which MSVC forces our hand on (and
234 // apparently MinGW didn't) is the usage of `dllimport` and `dllexport`
235 // attributes in LLVM IR as well as native dependencies (in C these
236 // correspond to `__declspec(dllimport)`).
238 // Whenever a dynamic library is built by MSVC it must have its public
239 // interface specified by functions tagged with `dllexport` or otherwise
240 // they're not available to be linked against. This poses a few problems
241 // for the compiler, some of which are somewhat fundamental, but we use
242 // the `use_dll_storage_attrs` variable below to attach the `dllexport`
243 // attribute to all LLVM functions that are exported e.g., they're
244 // already tagged with external linkage). This is suboptimal for a few
247 // * If an object file will never be included in a dynamic library,
248 // there's no need to attach the dllexport attribute. Most object
249 // files in Rust are not destined to become part of a dll as binaries
250 // are statically linked by default.
251 // * If the compiler is emitting both an rlib and a dylib, the same
252 // source object file is currently used but with MSVC this may be less
253 // feasible. The compiler may be able to get around this, but it may
254 // involve some invasive changes to deal with this.
256 // The flipside of this situation is that whenever you link to a dll and
257 // you import a function from it, the import should be tagged with
258 // `dllimport`. At this time, however, the compiler does not emit
259 // `dllimport` for any declarations other than constants (where it is
260 // required), which is again suboptimal for even more reasons!
262 // * Calling a function imported from another dll without using
263 // `dllimport` causes the linker/compiler to have extra overhead (one
264 // `jmp` instruction on x86) when calling the function.
265 // * The same object file may be used in different circumstances, so a
266 // function may be imported from a dll if the object is linked into a
267 // dll, but it may be just linked against if linked into an rlib.
268 // * The compiler has no knowledge about whether native functions should
269 // be tagged dllimport or not.
271 // For now the compiler takes the perf hit (I do not have any numbers to
272 // this effect) by marking very little as `dllimport` and praying the
273 // linker will take care of everything. Fixing this problem will likely
274 // require adding a few attributes to Rust itself (feature gated at the
275 // start) and then strongly recommending static linkage on MSVC!
276 let use_dll_storage_attrs = tcx.sess.target.target.options.is_like_msvc;
278 let check_overflow = tcx.sess.overflow_checks();
280 let tls_model = get_tls_model(&tcx.sess);
282 let (llcx, llmod) = (&*llvm_module.llcx, llvm_module.llmod());
284 let dbg_cx = if tcx.sess.opts.debuginfo != DebugInfo::None {
285 let dctx = debuginfo::CrateDebugContext::new(llmod);
286 debuginfo::metadata::compile_unit_metadata(tcx,
287 &codegen_unit.name().as_str(),
294 let isize_ty = Type::ix_llcx(llcx, tcx.data_layout.pointer_size.bits());
299 use_dll_storage_attrs,
304 instances: Default::default(),
305 vtables: Default::default(),
306 const_cstr_cache: Default::default(),
307 const_unsized: Default::default(),
308 const_globals: Default::default(),
309 statics_to_rauw: RefCell::new(Vec::new()),
310 used_statics: RefCell::new(Vec::new()),
311 lltypes: Default::default(),
312 scalar_lltypes: Default::default(),
313 pointee_infos: Default::default(),
316 eh_personality: Cell::new(None),
317 eh_unwind_resume: Cell::new(None),
318 rust_try_fn: Cell::new(None),
319 intrinsics: Default::default(),
320 local_gen_sym_counter: Cell::new(0),
324 crate fn statics_to_rauw(&self) -> &RefCell<Vec<(&'ll Value, &'ll Value)>> {
325 &self.statics_to_rauw
329 impl MiscMethods<'tcx> for CodegenCx<'ll, 'tcx> {
330 fn vtables(&self) -> &RefCell<FxHashMap<(Ty<'tcx>,
331 Option<ty::PolyExistentialTraitRef<'tcx>>), &'ll Value>>
336 fn get_fn(&self, instance: Instance<'tcx>) -> &'ll Value {
337 get_fn(self, instance)
340 fn get_fn_addr(&self, instance: Instance<'tcx>) -> &'ll Value {
341 get_fn(self, instance)
344 fn eh_personality(&self) -> &'ll Value {
345 // The exception handling personality function.
347 // If our compilation unit has the `eh_personality` lang item somewhere
348 // within it, then we just need to codegen that. Otherwise, we're
349 // building an rlib which will depend on some upstream implementation of
350 // this function, so we just codegen a generic reference to it. We don't
351 // specify any of the types for the function, we just make it a symbol
352 // that LLVM can later use.
354 // Note that MSVC is a little special here in that we don't use the
355 // `eh_personality` lang item at all. Currently LLVM has support for
356 // both Dwarf and SEH unwind mechanisms for MSVC targets and uses the
357 // *name of the personality function* to decide what kind of unwind side
358 // tables/landing pads to emit. It looks like Dwarf is used by default,
359 // injecting a dependency on the `_Unwind_Resume` symbol for resuming
360 // an "exception", but for MSVC we want to force SEH. This means that we
361 // can't actually have the personality function be our standard
362 // `rust_eh_personality` function, but rather we wired it up to the
363 // CRT's custom personality function, which forces LLVM to consider
364 // landing pads as "landing pads for SEH".
365 if let Some(llpersonality) = self.eh_personality.get() {
369 let llfn = match tcx.lang_items().eh_personality() {
370 Some(def_id) if !wants_msvc_seh(self.sess()) => {
372 ty::Instance::resolve(
374 ty::ParamEnv::reveal_all(),
376 tcx.intern_substs(&[]),
381 let name = if wants_msvc_seh(self.sess()) {
384 "rust_eh_personality"
386 let fty = self.type_variadic_func(&[], self.type_i32());
387 self.declare_cfn(name, fty)
390 attributes::apply_target_cpu_attr(self, llfn);
391 self.eh_personality.set(Some(llfn));
395 // Returns a Value of the "eh_unwind_resume" lang item if one is defined,
396 // otherwise declares it as an external function.
397 fn eh_unwind_resume(&self) -> &'ll Value {
398 let unwresume = &self.eh_unwind_resume;
399 if let Some(llfn) = unwresume.get() {
404 assert!(self.sess().target.target.options.custom_unwind_resume);
405 if let Some(def_id) = tcx.lang_items().eh_unwind_resume() {
406 let llfn = self.get_fn_addr(
407 ty::Instance::resolve(
409 ty::ParamEnv::reveal_all(),
411 tcx.intern_substs(&[]),
414 unwresume.set(Some(llfn));
418 let sig = ty::Binder::bind(tcx.mk_fn_sig(
419 iter::once(tcx.mk_mut_ptr(tcx.types.u8)),
422 hir::Unsafety::Unsafe,
426 let fn_abi = FnAbi::of_fn_ptr(self, sig, &[]);
427 let llfn = self.declare_fn("rust_eh_unwind_resume", &fn_abi);
428 attributes::apply_target_cpu_attr(self, llfn);
429 unwresume.set(Some(llfn));
433 fn sess(&self) -> &Session {
437 fn check_overflow(&self) -> bool {
441 fn codegen_unit(&self) -> &Arc<CodegenUnit<'tcx>> {
445 fn used_statics(&self) -> &RefCell<Vec<&'ll Value>> {
449 fn set_frame_pointer_elimination(&self, llfn: &'ll Value) {
450 attributes::set_frame_pointer_elimination(self, llfn)
453 fn apply_target_cpu_attr(&self, llfn: &'ll Value) {
454 attributes::apply_target_cpu_attr(self, llfn)
457 fn create_used_variable(&self) {
458 let name = const_cstr!("llvm.used");
459 let section = const_cstr!("llvm.metadata");
460 let array = self.const_array(
461 &self.type_ptr_to(self.type_i8()),
462 &*self.used_statics.borrow()
466 let g = llvm::LLVMAddGlobal(self.llmod,
469 llvm::LLVMSetInitializer(g, array);
470 llvm::LLVMRustSetLinkage(g, llvm::Linkage::AppendingLinkage);
471 llvm::LLVMSetSection(g, section.as_ptr());
476 impl CodegenCx<'b, 'tcx> {
477 crate fn get_intrinsic(&self, key: &str) -> &'b Value {
478 if let Some(v) = self.intrinsics.borrow().get(key).cloned() {
482 self.declare_intrinsic(key).unwrap_or_else(|| bug!("unknown intrinsic '{}'", key))
486 &self, name: &'static str, args: Option<&[&'b llvm::Type]>, ret: &'b llvm::Type
487 ) -> &'b llvm::Value {
488 let fn_ty = if let Some(args) = args {
489 self.type_func(args, ret)
491 self.type_variadic_func(&[], ret)
493 let f = self.declare_cfn(name, fn_ty);
494 llvm::SetUnnamedAddr(f, false);
495 self.intrinsics.borrow_mut().insert(name, f);
499 fn declare_intrinsic(
502 ) -> Option<&'b Value> {
504 ($name:expr, fn() -> $ret:expr) => (
506 return Some(self.insert_intrinsic($name, Some(&[]), $ret));
509 ($name:expr, fn(...) -> $ret:expr) => (
511 return Some(self.insert_intrinsic($name, None, $ret));
514 ($name:expr, fn($($arg:expr),*) -> $ret:expr) => (
516 return Some(self.insert_intrinsic($name, Some(&[$($arg),*]), $ret));
520 macro_rules! mk_struct {
521 ($($field_ty:expr),*) => (self.type_struct( &[$($field_ty),*], false))
524 let i8p = self.type_i8p();
525 let void = self.type_void();
526 let i1 = self.type_i1();
527 let t_i8 = self.type_i8();
528 let t_i16 = self.type_i16();
529 let t_i32 = self.type_i32();
530 let t_i64 = self.type_i64();
531 let t_i128 = self.type_i128();
532 let t_f32 = self.type_f32();
533 let t_f64 = self.type_f64();
535 macro_rules! vector_types {
536 ($id_out:ident: $elem_ty:ident, $len:expr) => {
537 let $id_out = self.type_vector($elem_ty, $len);
539 ($($id_out:ident: $elem_ty:ident, $len:expr;)*) => {
540 $(vector_types!($id_out: $elem_ty, $len);)*
554 ifn!("llvm.memset.p0i8.i16", fn(i8p, t_i8, t_i16, t_i32, i1) -> void);
555 ifn!("llvm.memset.p0i8.i32", fn(i8p, t_i8, t_i32, t_i32, i1) -> void);
556 ifn!("llvm.memset.p0i8.i64", fn(i8p, t_i8, t_i64, t_i32, i1) -> void);
558 ifn!("llvm.trap", fn() -> void);
559 ifn!("llvm.debugtrap", fn() -> void);
560 ifn!("llvm.frameaddress", fn(t_i32) -> i8p);
561 ifn!("llvm.sideeffect", fn() -> void);
563 ifn!("llvm.powi.f32", fn(t_f32, t_i32) -> t_f32);
564 ifn!("llvm.powi.v2f32", fn(t_v2f32, t_i32) -> t_v2f32);
565 ifn!("llvm.powi.v4f32", fn(t_v4f32, t_i32) -> t_v4f32);
566 ifn!("llvm.powi.v8f32", fn(t_v8f32, t_i32) -> t_v8f32);
567 ifn!("llvm.powi.v16f32", fn(t_v16f32, t_i32) -> t_v16f32);
568 ifn!("llvm.powi.f64", fn(t_f64, t_i32) -> t_f64);
569 ifn!("llvm.powi.v2f64", fn(t_v2f64, t_i32) -> t_v2f64);
570 ifn!("llvm.powi.v4f64", fn(t_v4f64, t_i32) -> t_v4f64);
571 ifn!("llvm.powi.v8f64", fn(t_v8f64, t_i32) -> t_v8f64);
573 ifn!("llvm.pow.f32", fn(t_f32, t_f32) -> t_f32);
574 ifn!("llvm.pow.v2f32", fn(t_v2f32, t_v2f32) -> t_v2f32);
575 ifn!("llvm.pow.v4f32", fn(t_v4f32, t_v4f32) -> t_v4f32);
576 ifn!("llvm.pow.v8f32", fn(t_v8f32, t_v8f32) -> t_v8f32);
577 ifn!("llvm.pow.v16f32", fn(t_v16f32, t_v16f32) -> t_v16f32);
578 ifn!("llvm.pow.f64", fn(t_f64, t_f64) -> t_f64);
579 ifn!("llvm.pow.v2f64", fn(t_v2f64, t_v2f64) -> t_v2f64);
580 ifn!("llvm.pow.v4f64", fn(t_v4f64, t_v4f64) -> t_v4f64);
581 ifn!("llvm.pow.v8f64", fn(t_v8f64, t_v8f64) -> t_v8f64);
583 ifn!("llvm.sqrt.f32", fn(t_f32) -> t_f32);
584 ifn!("llvm.sqrt.v2f32", fn(t_v2f32) -> t_v2f32);
585 ifn!("llvm.sqrt.v4f32", fn(t_v4f32) -> t_v4f32);
586 ifn!("llvm.sqrt.v8f32", fn(t_v8f32) -> t_v8f32);
587 ifn!("llvm.sqrt.v16f32", fn(t_v16f32) -> t_v16f32);
588 ifn!("llvm.sqrt.f64", fn(t_f64) -> t_f64);
589 ifn!("llvm.sqrt.v2f64", fn(t_v2f64) -> t_v2f64);
590 ifn!("llvm.sqrt.v4f64", fn(t_v4f64) -> t_v4f64);
591 ifn!("llvm.sqrt.v8f64", fn(t_v8f64) -> t_v8f64);
593 ifn!("llvm.sin.f32", fn(t_f32) -> t_f32);
594 ifn!("llvm.sin.v2f32", fn(t_v2f32) -> t_v2f32);
595 ifn!("llvm.sin.v4f32", fn(t_v4f32) -> t_v4f32);
596 ifn!("llvm.sin.v8f32", fn(t_v8f32) -> t_v8f32);
597 ifn!("llvm.sin.v16f32", fn(t_v16f32) -> t_v16f32);
598 ifn!("llvm.sin.f64", fn(t_f64) -> t_f64);
599 ifn!("llvm.sin.v2f64", fn(t_v2f64) -> t_v2f64);
600 ifn!("llvm.sin.v4f64", fn(t_v4f64) -> t_v4f64);
601 ifn!("llvm.sin.v8f64", fn(t_v8f64) -> t_v8f64);
603 ifn!("llvm.cos.f32", fn(t_f32) -> t_f32);
604 ifn!("llvm.cos.v2f32", fn(t_v2f32) -> t_v2f32);
605 ifn!("llvm.cos.v4f32", fn(t_v4f32) -> t_v4f32);
606 ifn!("llvm.cos.v8f32", fn(t_v8f32) -> t_v8f32);
607 ifn!("llvm.cos.v16f32", fn(t_v16f32) -> t_v16f32);
608 ifn!("llvm.cos.f64", fn(t_f64) -> t_f64);
609 ifn!("llvm.cos.v2f64", fn(t_v2f64) -> t_v2f64);
610 ifn!("llvm.cos.v4f64", fn(t_v4f64) -> t_v4f64);
611 ifn!("llvm.cos.v8f64", fn(t_v8f64) -> t_v8f64);
613 ifn!("llvm.exp.f32", fn(t_f32) -> t_f32);
614 ifn!("llvm.exp.v2f32", fn(t_v2f32) -> t_v2f32);
615 ifn!("llvm.exp.v4f32", fn(t_v4f32) -> t_v4f32);
616 ifn!("llvm.exp.v8f32", fn(t_v8f32) -> t_v8f32);
617 ifn!("llvm.exp.v16f32", fn(t_v16f32) -> t_v16f32);
618 ifn!("llvm.exp.f64", fn(t_f64) -> t_f64);
619 ifn!("llvm.exp.v2f64", fn(t_v2f64) -> t_v2f64);
620 ifn!("llvm.exp.v4f64", fn(t_v4f64) -> t_v4f64);
621 ifn!("llvm.exp.v8f64", fn(t_v8f64) -> t_v8f64);
623 ifn!("llvm.exp2.f32", fn(t_f32) -> t_f32);
624 ifn!("llvm.exp2.v2f32", fn(t_v2f32) -> t_v2f32);
625 ifn!("llvm.exp2.v4f32", fn(t_v4f32) -> t_v4f32);
626 ifn!("llvm.exp2.v8f32", fn(t_v8f32) -> t_v8f32);
627 ifn!("llvm.exp2.v16f32", fn(t_v16f32) -> t_v16f32);
628 ifn!("llvm.exp2.f64", fn(t_f64) -> t_f64);
629 ifn!("llvm.exp2.v2f64", fn(t_v2f64) -> t_v2f64);
630 ifn!("llvm.exp2.v4f64", fn(t_v4f64) -> t_v4f64);
631 ifn!("llvm.exp2.v8f64", fn(t_v8f64) -> t_v8f64);
633 ifn!("llvm.log.f32", fn(t_f32) -> t_f32);
634 ifn!("llvm.log.v2f32", fn(t_v2f32) -> t_v2f32);
635 ifn!("llvm.log.v4f32", fn(t_v4f32) -> t_v4f32);
636 ifn!("llvm.log.v8f32", fn(t_v8f32) -> t_v8f32);
637 ifn!("llvm.log.v16f32", fn(t_v16f32) -> t_v16f32);
638 ifn!("llvm.log.f64", fn(t_f64) -> t_f64);
639 ifn!("llvm.log.v2f64", fn(t_v2f64) -> t_v2f64);
640 ifn!("llvm.log.v4f64", fn(t_v4f64) -> t_v4f64);
641 ifn!("llvm.log.v8f64", fn(t_v8f64) -> t_v8f64);
643 ifn!("llvm.log10.f32", fn(t_f32) -> t_f32);
644 ifn!("llvm.log10.v2f32", fn(t_v2f32) -> t_v2f32);
645 ifn!("llvm.log10.v4f32", fn(t_v4f32) -> t_v4f32);
646 ifn!("llvm.log10.v8f32", fn(t_v8f32) -> t_v8f32);
647 ifn!("llvm.log10.v16f32", fn(t_v16f32) -> t_v16f32);
648 ifn!("llvm.log10.f64", fn(t_f64) -> t_f64);
649 ifn!("llvm.log10.v2f64", fn(t_v2f64) -> t_v2f64);
650 ifn!("llvm.log10.v4f64", fn(t_v4f64) -> t_v4f64);
651 ifn!("llvm.log10.v8f64", fn(t_v8f64) -> t_v8f64);
653 ifn!("llvm.log2.f32", fn(t_f32) -> t_f32);
654 ifn!("llvm.log2.v2f32", fn(t_v2f32) -> t_v2f32);
655 ifn!("llvm.log2.v4f32", fn(t_v4f32) -> t_v4f32);
656 ifn!("llvm.log2.v8f32", fn(t_v8f32) -> t_v8f32);
657 ifn!("llvm.log2.v16f32", fn(t_v16f32) -> t_v16f32);
658 ifn!("llvm.log2.f64", fn(t_f64) -> t_f64);
659 ifn!("llvm.log2.v2f64", fn(t_v2f64) -> t_v2f64);
660 ifn!("llvm.log2.v4f64", fn(t_v4f64) -> t_v4f64);
661 ifn!("llvm.log2.v8f64", fn(t_v8f64) -> t_v8f64);
663 ifn!("llvm.fma.f32", fn(t_f32, t_f32, t_f32) -> t_f32);
664 ifn!("llvm.fma.v2f32", fn(t_v2f32, t_v2f32, t_v2f32) -> t_v2f32);
665 ifn!("llvm.fma.v4f32", fn(t_v4f32, t_v4f32, t_v4f32) -> t_v4f32);
666 ifn!("llvm.fma.v8f32", fn(t_v8f32, t_v8f32, t_v8f32) -> t_v8f32);
667 ifn!("llvm.fma.v16f32", fn(t_v16f32, t_v16f32, t_v16f32) -> t_v16f32);
668 ifn!("llvm.fma.f64", fn(t_f64, t_f64, t_f64) -> t_f64);
669 ifn!("llvm.fma.v2f64", fn(t_v2f64, t_v2f64, t_v2f64) -> t_v2f64);
670 ifn!("llvm.fma.v4f64", fn(t_v4f64, t_v4f64, t_v4f64) -> t_v4f64);
671 ifn!("llvm.fma.v8f64", fn(t_v8f64, t_v8f64, t_v8f64) -> t_v8f64);
673 ifn!("llvm.fabs.f32", fn(t_f32) -> t_f32);
674 ifn!("llvm.fabs.v2f32", fn(t_v2f32) -> t_v2f32);
675 ifn!("llvm.fabs.v4f32", fn(t_v4f32) -> t_v4f32);
676 ifn!("llvm.fabs.v8f32", fn(t_v8f32) -> t_v8f32);
677 ifn!("llvm.fabs.v16f32", fn(t_v16f32) -> t_v16f32);
678 ifn!("llvm.fabs.f64", fn(t_f64) -> t_f64);
679 ifn!("llvm.fabs.v2f64", fn(t_v2f64) -> t_v2f64);
680 ifn!("llvm.fabs.v4f64", fn(t_v4f64) -> t_v4f64);
681 ifn!("llvm.fabs.v8f64", fn(t_v8f64) -> t_v8f64);
683 ifn!("llvm.minnum.f32", fn(t_f32, t_f32) -> t_f32);
684 ifn!("llvm.minnum.f64", fn(t_f64, t_f64) -> t_f64);
685 ifn!("llvm.maxnum.f32", fn(t_f32, t_f32) -> t_f32);
686 ifn!("llvm.maxnum.f64", fn(t_f64, t_f64) -> t_f64);
688 ifn!("llvm.floor.f32", fn(t_f32) -> t_f32);
689 ifn!("llvm.floor.v2f32", fn(t_v2f32) -> t_v2f32);
690 ifn!("llvm.floor.v4f32", fn(t_v4f32) -> t_v4f32);
691 ifn!("llvm.floor.v8f32", fn(t_v8f32) -> t_v8f32);
692 ifn!("llvm.floor.v16f32", fn(t_v16f32) -> t_v16f32);
693 ifn!("llvm.floor.f64", fn(t_f64) -> t_f64);
694 ifn!("llvm.floor.v2f64", fn(t_v2f64) -> t_v2f64);
695 ifn!("llvm.floor.v4f64", fn(t_v4f64) -> t_v4f64);
696 ifn!("llvm.floor.v8f64", fn(t_v8f64) -> t_v8f64);
698 ifn!("llvm.ceil.f32", fn(t_f32) -> t_f32);
699 ifn!("llvm.ceil.v2f32", fn(t_v2f32) -> t_v2f32);
700 ifn!("llvm.ceil.v4f32", fn(t_v4f32) -> t_v4f32);
701 ifn!("llvm.ceil.v8f32", fn(t_v8f32) -> t_v8f32);
702 ifn!("llvm.ceil.v16f32", fn(t_v16f32) -> t_v16f32);
703 ifn!("llvm.ceil.f64", fn(t_f64) -> t_f64);
704 ifn!("llvm.ceil.v2f64", fn(t_v2f64) -> t_v2f64);
705 ifn!("llvm.ceil.v4f64", fn(t_v4f64) -> t_v4f64);
706 ifn!("llvm.ceil.v8f64", fn(t_v8f64) -> t_v8f64);
708 ifn!("llvm.trunc.f32", fn(t_f32) -> t_f32);
709 ifn!("llvm.trunc.f64", fn(t_f64) -> t_f64);
711 ifn!("llvm.copysign.f32", fn(t_f32, t_f32) -> t_f32);
712 ifn!("llvm.copysign.f64", fn(t_f64, t_f64) -> t_f64);
713 ifn!("llvm.round.f32", fn(t_f32) -> t_f32);
714 ifn!("llvm.round.f64", fn(t_f64) -> t_f64);
716 ifn!("llvm.rint.f32", fn(t_f32) -> t_f32);
717 ifn!("llvm.rint.f64", fn(t_f64) -> t_f64);
718 ifn!("llvm.nearbyint.f32", fn(t_f32) -> t_f32);
719 ifn!("llvm.nearbyint.f64", fn(t_f64) -> t_f64);
721 ifn!("llvm.ctpop.i8", fn(t_i8) -> t_i8);
722 ifn!("llvm.ctpop.i16", fn(t_i16) -> t_i16);
723 ifn!("llvm.ctpop.i32", fn(t_i32) -> t_i32);
724 ifn!("llvm.ctpop.i64", fn(t_i64) -> t_i64);
725 ifn!("llvm.ctpop.i128", fn(t_i128) -> t_i128);
727 ifn!("llvm.ctlz.i8", fn(t_i8 , i1) -> t_i8);
728 ifn!("llvm.ctlz.i16", fn(t_i16, i1) -> t_i16);
729 ifn!("llvm.ctlz.i32", fn(t_i32, i1) -> t_i32);
730 ifn!("llvm.ctlz.i64", fn(t_i64, i1) -> t_i64);
731 ifn!("llvm.ctlz.i128", fn(t_i128, i1) -> t_i128);
733 ifn!("llvm.cttz.i8", fn(t_i8 , i1) -> t_i8);
734 ifn!("llvm.cttz.i16", fn(t_i16, i1) -> t_i16);
735 ifn!("llvm.cttz.i32", fn(t_i32, i1) -> t_i32);
736 ifn!("llvm.cttz.i64", fn(t_i64, i1) -> t_i64);
737 ifn!("llvm.cttz.i128", fn(t_i128, i1) -> t_i128);
739 ifn!("llvm.bswap.i16", fn(t_i16) -> t_i16);
740 ifn!("llvm.bswap.i32", fn(t_i32) -> t_i32);
741 ifn!("llvm.bswap.i64", fn(t_i64) -> t_i64);
742 ifn!("llvm.bswap.i128", fn(t_i128) -> t_i128);
744 ifn!("llvm.bitreverse.i8", fn(t_i8) -> t_i8);
745 ifn!("llvm.bitreverse.i16", fn(t_i16) -> t_i16);
746 ifn!("llvm.bitreverse.i32", fn(t_i32) -> t_i32);
747 ifn!("llvm.bitreverse.i64", fn(t_i64) -> t_i64);
748 ifn!("llvm.bitreverse.i128", fn(t_i128) -> t_i128);
750 ifn!("llvm.fshl.i8", fn(t_i8, t_i8, t_i8) -> t_i8);
751 ifn!("llvm.fshl.i16", fn(t_i16, t_i16, t_i16) -> t_i16);
752 ifn!("llvm.fshl.i32", fn(t_i32, t_i32, t_i32) -> t_i32);
753 ifn!("llvm.fshl.i64", fn(t_i64, t_i64, t_i64) -> t_i64);
754 ifn!("llvm.fshl.i128", fn(t_i128, t_i128, t_i128) -> t_i128);
756 ifn!("llvm.fshr.i8", fn(t_i8, t_i8, t_i8) -> t_i8);
757 ifn!("llvm.fshr.i16", fn(t_i16, t_i16, t_i16) -> t_i16);
758 ifn!("llvm.fshr.i32", fn(t_i32, t_i32, t_i32) -> t_i32);
759 ifn!("llvm.fshr.i64", fn(t_i64, t_i64, t_i64) -> t_i64);
760 ifn!("llvm.fshr.i128", fn(t_i128, t_i128, t_i128) -> t_i128);
762 ifn!("llvm.sadd.with.overflow.i8", fn(t_i8, t_i8) -> mk_struct!{t_i8, i1});
763 ifn!("llvm.sadd.with.overflow.i16", fn(t_i16, t_i16) -> mk_struct!{t_i16, i1});
764 ifn!("llvm.sadd.with.overflow.i32", fn(t_i32, t_i32) -> mk_struct!{t_i32, i1});
765 ifn!("llvm.sadd.with.overflow.i64", fn(t_i64, t_i64) -> mk_struct!{t_i64, i1});
766 ifn!("llvm.sadd.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct!{t_i128, i1});
768 ifn!("llvm.uadd.with.overflow.i8", fn(t_i8, t_i8) -> mk_struct!{t_i8, i1});
769 ifn!("llvm.uadd.with.overflow.i16", fn(t_i16, t_i16) -> mk_struct!{t_i16, i1});
770 ifn!("llvm.uadd.with.overflow.i32", fn(t_i32, t_i32) -> mk_struct!{t_i32, i1});
771 ifn!("llvm.uadd.with.overflow.i64", fn(t_i64, t_i64) -> mk_struct!{t_i64, i1});
772 ifn!("llvm.uadd.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct!{t_i128, i1});
774 ifn!("llvm.ssub.with.overflow.i8", fn(t_i8, t_i8) -> mk_struct!{t_i8, i1});
775 ifn!("llvm.ssub.with.overflow.i16", fn(t_i16, t_i16) -> mk_struct!{t_i16, i1});
776 ifn!("llvm.ssub.with.overflow.i32", fn(t_i32, t_i32) -> mk_struct!{t_i32, i1});
777 ifn!("llvm.ssub.with.overflow.i64", fn(t_i64, t_i64) -> mk_struct!{t_i64, i1});
778 ifn!("llvm.ssub.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct!{t_i128, i1});
780 ifn!("llvm.usub.with.overflow.i8", fn(t_i8, t_i8) -> mk_struct!{t_i8, i1});
781 ifn!("llvm.usub.with.overflow.i16", fn(t_i16, t_i16) -> mk_struct!{t_i16, i1});
782 ifn!("llvm.usub.with.overflow.i32", fn(t_i32, t_i32) -> mk_struct!{t_i32, i1});
783 ifn!("llvm.usub.with.overflow.i64", fn(t_i64, t_i64) -> mk_struct!{t_i64, i1});
784 ifn!("llvm.usub.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct!{t_i128, i1});
786 ifn!("llvm.smul.with.overflow.i8", fn(t_i8, t_i8) -> mk_struct!{t_i8, i1});
787 ifn!("llvm.smul.with.overflow.i16", fn(t_i16, t_i16) -> mk_struct!{t_i16, i1});
788 ifn!("llvm.smul.with.overflow.i32", fn(t_i32, t_i32) -> mk_struct!{t_i32, i1});
789 ifn!("llvm.smul.with.overflow.i64", fn(t_i64, t_i64) -> mk_struct!{t_i64, i1});
790 ifn!("llvm.smul.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct!{t_i128, i1});
792 ifn!("llvm.umul.with.overflow.i8", fn(t_i8, t_i8) -> mk_struct!{t_i8, i1});
793 ifn!("llvm.umul.with.overflow.i16", fn(t_i16, t_i16) -> mk_struct!{t_i16, i1});
794 ifn!("llvm.umul.with.overflow.i32", fn(t_i32, t_i32) -> mk_struct!{t_i32, i1});
795 ifn!("llvm.umul.with.overflow.i64", fn(t_i64, t_i64) -> mk_struct!{t_i64, i1});
796 ifn!("llvm.umul.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct!{t_i128, i1});
798 ifn!("llvm.sadd.sat.i8", fn(t_i8, t_i8) -> t_i8);
799 ifn!("llvm.sadd.sat.i16", fn(t_i16, t_i16) -> t_i16);
800 ifn!("llvm.sadd.sat.i32", fn(t_i32, t_i32) -> t_i32);
801 ifn!("llvm.sadd.sat.i64", fn(t_i64, t_i64) -> t_i64);
802 ifn!("llvm.sadd.sat.i128", fn(t_i128, t_i128) -> t_i128);
804 ifn!("llvm.uadd.sat.i8", fn(t_i8, t_i8) -> t_i8);
805 ifn!("llvm.uadd.sat.i16", fn(t_i16, t_i16) -> t_i16);
806 ifn!("llvm.uadd.sat.i32", fn(t_i32, t_i32) -> t_i32);
807 ifn!("llvm.uadd.sat.i64", fn(t_i64, t_i64) -> t_i64);
808 ifn!("llvm.uadd.sat.i128", fn(t_i128, t_i128) -> t_i128);
810 ifn!("llvm.ssub.sat.i8", fn(t_i8, t_i8) -> t_i8);
811 ifn!("llvm.ssub.sat.i16", fn(t_i16, t_i16) -> t_i16);
812 ifn!("llvm.ssub.sat.i32", fn(t_i32, t_i32) -> t_i32);
813 ifn!("llvm.ssub.sat.i64", fn(t_i64, t_i64) -> t_i64);
814 ifn!("llvm.ssub.sat.i128", fn(t_i128, t_i128) -> t_i128);
816 ifn!("llvm.usub.sat.i8", fn(t_i8, t_i8) -> t_i8);
817 ifn!("llvm.usub.sat.i16", fn(t_i16, t_i16) -> t_i16);
818 ifn!("llvm.usub.sat.i32", fn(t_i32, t_i32) -> t_i32);
819 ifn!("llvm.usub.sat.i64", fn(t_i64, t_i64) -> t_i64);
820 ifn!("llvm.usub.sat.i128", fn(t_i128, t_i128) -> t_i128);
822 ifn!("llvm.lifetime.start", fn(t_i64,i8p) -> void);
823 ifn!("llvm.lifetime.end", fn(t_i64, i8p) -> void);
825 ifn!("llvm.expect.i1", fn(i1, i1) -> i1);
826 ifn!("llvm.eh.typeid.for", fn(i8p) -> t_i32);
827 ifn!("llvm.localescape", fn(...) -> void);
828 ifn!("llvm.localrecover", fn(i8p, i8p, t_i32) -> i8p);
829 ifn!("llvm.x86.seh.recoverfp", fn(i8p, i8p) -> i8p);
831 ifn!("llvm.assume", fn(i1) -> void);
832 ifn!("llvm.prefetch", fn(i8p, t_i32, t_i32, t_i32) -> void);
834 // variadic intrinsics
835 ifn!("llvm.va_start", fn(i8p) -> void);
836 ifn!("llvm.va_end", fn(i8p) -> void);
837 ifn!("llvm.va_copy", fn(i8p, i8p) -> void);
839 if self.sess().opts.debuginfo != DebugInfo::None {
840 ifn!("llvm.dbg.declare", fn(self.type_metadata(), self.type_metadata()) -> void);
841 ifn!("llvm.dbg.value", fn(self.type_metadata(), t_i64, self.type_metadata()) -> void);
847 impl<'b, 'tcx> CodegenCx<'b, 'tcx> {
848 /// Generates a new symbol name with the given prefix. This symbol name must
849 /// only be used for definitions with `internal` or `private` linkage.
850 pub fn generate_local_symbol_name(&self, prefix: &str) -> String {
851 let idx = self.local_gen_sym_counter.get();
852 self.local_gen_sym_counter.set(idx + 1);
853 // Include a '.' character, so there can be no accidental conflicts with
854 // user defined names
855 let mut name = String::with_capacity(prefix.len() + 6);
856 name.push_str(prefix);
858 base_n::push_str(idx as u128, base_n::ALPHANUMERIC_ONLY, &mut name);
863 impl ty::layout::HasDataLayout for CodegenCx<'ll, 'tcx> {
864 fn data_layout(&self) -> &ty::layout::TargetDataLayout {
865 &self.tcx.data_layout
869 impl HasTargetSpec for CodegenCx<'ll, 'tcx> {
870 fn target_spec(&self) -> &Target {
871 &self.tcx.sess.target.target
875 impl ty::layout::HasTyCtxt<'tcx> for CodegenCx<'ll, 'tcx> {
876 fn tcx(&self) -> TyCtxt<'tcx> {
881 impl LayoutOf for CodegenCx<'ll, 'tcx> {
883 type TyLayout = TyLayout<'tcx>;
885 fn layout_of(&self, ty: Ty<'tcx>) -> Self::TyLayout {
886 self.spanned_layout_of(ty, DUMMY_SP)
889 fn spanned_layout_of(&self, ty: Ty<'tcx>, span: Span) -> Self::TyLayout {
890 self.tcx.layout_of(ty::ParamEnv::reveal_all().and(ty))
891 .unwrap_or_else(|e| if let LayoutError::SizeOverflow(_) = e {
892 self.sess().span_fatal(span, &e.to_string())
894 bug!("failed to get layout for `{}`: {}", ty, e)
899 impl<'tcx, 'll> HasParamEnv<'tcx> for CodegenCx<'ll, 'tcx> {
900 fn param_env(&self) -> ty::ParamEnv<'tcx> {
901 ty::ParamEnv::reveal_all()