1use std::borrow::Borrow;
2use std::cell::{Cell, RefCell};
3use std::ffi::{CStr, c_char, c_uint};
4use std::marker::PhantomData;
5use std::ops::{Deref, DerefMut};
6use std::str;
7
8use rustc_abi::{HasDataLayout, Size, TargetDataLayout, VariantIdx};
9use rustc_codegen_ssa::back::versioned_llvm_target;
10use rustc_codegen_ssa::base::{wants_msvc_seh, wants_wasm_eh};
11use rustc_codegen_ssa::common::TypeKind;
12use rustc_codegen_ssa::errors as ssa_errors;
13use rustc_codegen_ssa::traits::*;
14use rustc_data_structures::base_n::{ALPHANUMERIC_ONLY, ToBaseN};
15use rustc_data_structures::fx::FxHashMap;
16use rustc_data_structures::small_c_str::SmallCStr;
17use rustc_hir::def_id::DefId;
18use rustc_middle::middle::codegen_fn_attrs::PatchableFunctionEntry;
19use rustc_middle::mir::mono::CodegenUnit;
20use rustc_middle::ty::layout::{
21 FnAbiError, FnAbiOfHelpers, FnAbiRequest, HasTypingEnv, LayoutError, LayoutOfHelpers,
22};
23use rustc_middle::ty::{self, Instance, Ty, TyCtxt};
24use rustc_middle::{bug, span_bug};
25use rustc_session::Session;
26use rustc_session::config::{
27 BranchProtection, CFGuard, CFProtection, CrateType, DebugInfo, FunctionReturn, PAuthKey, PacRet,
28};
29use rustc_span::source_map::Spanned;
30use rustc_span::{DUMMY_SP, Span};
31use rustc_symbol_mangling::mangle_internal_symbol;
32use rustc_target::spec::{HasTargetSpec, RelocModel, SmallDataThresholdSupport, Target, TlsModel};
33use smallvec::SmallVec;
34
35use crate::back::write::to_llvm_code_model;
36use crate::callee::get_fn;
37use crate::common::AsCCharPtr;
38use crate::debuginfo::metadata::apply_vcall_visibility_metadata;
39use crate::llvm::Metadata;
40use crate::type_::Type;
41use crate::value::Value;
42use crate::{attributes, common, coverageinfo, debuginfo, llvm, llvm_util};
43
44pub(crate) struct SCx<'ll> {
49 pub llmod: &'ll llvm::Module,
50 pub llcx: &'ll llvm::Context,
51 pub isize_ty: &'ll Type,
52}
53
54impl<'ll> Borrow<SCx<'ll>> for FullCx<'ll, '_> {
55 fn borrow(&self) -> &SCx<'ll> {
56 &self.scx
57 }
58}
59
60impl<'ll, 'tcx> Deref for FullCx<'ll, 'tcx> {
61 type Target = SimpleCx<'ll>;
62
63 #[inline]
64 fn deref(&self) -> &Self::Target {
65 &self.scx
66 }
67}
68
69pub(crate) struct GenericCx<'ll, T: Borrow<SCx<'ll>>>(T, PhantomData<SCx<'ll>>);
70
71impl<'ll, T: Borrow<SCx<'ll>>> Deref for GenericCx<'ll, T> {
72 type Target = T;
73
74 #[inline]
75 fn deref(&self) -> &Self::Target {
76 &self.0
77 }
78}
79
80impl<'ll, T: Borrow<SCx<'ll>>> DerefMut for GenericCx<'ll, T> {
81 #[inline]
82 fn deref_mut(&mut self) -> &mut Self::Target {
83 &mut self.0
84 }
85}
86
87pub(crate) type SimpleCx<'ll> = GenericCx<'ll, SCx<'ll>>;
88
89pub(crate) type CodegenCx<'ll, 'tcx> = GenericCx<'ll, FullCx<'ll, 'tcx>>;
93
94pub(crate) struct FullCx<'ll, 'tcx> {
95 pub tcx: TyCtxt<'tcx>,
96 pub scx: SimpleCx<'ll>,
97 pub use_dll_storage_attrs: bool,
98 pub tls_model: llvm::ThreadLocalMode,
99
100 pub codegen_unit: &'tcx CodegenUnit<'tcx>,
101
102 pub instances: RefCell<FxHashMap<Instance<'tcx>, &'ll Value>>,
104 pub vtables: RefCell<FxHashMap<(Ty<'tcx>, Option<ty::ExistentialTraitRef<'tcx>>), &'ll Value>>,
106 pub const_str_cache: RefCell<FxHashMap<String, &'ll Value>>,
108
109 pub const_globals: RefCell<FxHashMap<&'ll Value, &'ll Value>>,
111
112 pub statics_to_rauw: RefCell<Vec<(&'ll Value, &'ll Value)>>,
117
118 pub used_statics: Vec<&'ll Value>,
121
122 pub compiler_used_statics: Vec<&'ll Value>,
125
126 pub type_lowering: RefCell<FxHashMap<(Ty<'tcx>, Option<VariantIdx>), &'ll Type>>,
128
129 pub scalar_lltypes: RefCell<FxHashMap<Ty<'tcx>, &'ll Type>>,
131
132 pub coverage_cx: Option<coverageinfo::CguCoverageContext<'ll, 'tcx>>,
134 pub dbg_cx: Option<debuginfo::CodegenUnitDebugContext<'ll, 'tcx>>,
135
136 eh_personality: Cell<Option<&'ll Value>>,
137 eh_catch_typeinfo: Cell<Option<&'ll Value>>,
138 pub rust_try_fn: Cell<Option<(&'ll Type, &'ll Value)>>,
139
140 intrinsics: RefCell<FxHashMap<&'static str, (&'ll Type, &'ll Value)>>,
141
142 local_gen_sym_counter: Cell<usize>,
144
145 pub renamed_statics: RefCell<FxHashMap<DefId, &'ll Value>>,
150}
151
152fn to_llvm_tls_model(tls_model: TlsModel) -> llvm::ThreadLocalMode {
153 match tls_model {
154 TlsModel::GeneralDynamic => llvm::ThreadLocalMode::GeneralDynamic,
155 TlsModel::LocalDynamic => llvm::ThreadLocalMode::LocalDynamic,
156 TlsModel::InitialExec => llvm::ThreadLocalMode::InitialExec,
157 TlsModel::LocalExec => llvm::ThreadLocalMode::LocalExec,
158 TlsModel::Emulated => llvm::ThreadLocalMode::GeneralDynamic,
159 }
160}
161
162pub(crate) unsafe fn create_module<'ll>(
163 tcx: TyCtxt<'_>,
164 llcx: &'ll llvm::Context,
165 mod_name: &str,
166) -> &'ll llvm::Module {
167 let sess = tcx.sess;
168 let mod_name = SmallCStr::new(mod_name);
169 let llmod = unsafe { llvm::LLVMModuleCreateWithNameInContext(mod_name.as_ptr(), llcx) };
170
171 let mut target_data_layout = sess.target.data_layout.to_string();
172 let llvm_version = llvm_util::get_version();
173
174 if llvm_version < (20, 0, 0) {
175 if sess.target.arch == "aarch64" || sess.target.arch.starts_with("arm64") {
176 target_data_layout =
180 target_data_layout.replace("-p270:32:32-p271:32:32-p272:64:64", "");
181 }
182 if sess.target.arch.starts_with("sparc") {
183 target_data_layout = target_data_layout.replace("-i128:128", "");
186 }
187 if sess.target.arch.starts_with("mips64") {
188 target_data_layout = target_data_layout.replace("-i128:128", "");
191 }
192 if sess.target.arch.starts_with("powerpc64") {
193 target_data_layout = target_data_layout.replace("-i128:128", "");
196 }
197 if sess.target.arch.starts_with("wasm32") || sess.target.arch.starts_with("wasm64") {
198 target_data_layout = target_data_layout.replace("-i128:128", "");
201 }
202 }
203 if llvm_version < (21, 0, 0) {
204 if sess.target.arch == "nvptx64" {
205 target_data_layout = target_data_layout.replace("e-p6:32:32-i64", "e-i64");
207 }
208 }
209
210 {
212 let tm = crate::back::write::create_informational_target_machine(tcx.sess, false);
213 unsafe {
214 llvm::LLVMRustSetDataLayoutFromTargetMachine(llmod, tm.raw());
215 }
216
217 let llvm_data_layout = unsafe { llvm::LLVMGetDataLayoutStr(llmod) };
218 let llvm_data_layout =
219 str::from_utf8(unsafe { CStr::from_ptr(llvm_data_layout) }.to_bytes())
220 .expect("got a non-UTF8 data-layout from LLVM");
221
222 if target_data_layout != llvm_data_layout {
223 tcx.dcx().emit_err(crate::errors::MismatchedDataLayout {
224 rustc_target: sess.opts.target_triple.to_string().as_str(),
225 rustc_layout: target_data_layout.as_str(),
226 llvm_target: sess.target.llvm_target.borrow(),
227 llvm_layout: llvm_data_layout,
228 });
229 }
230 }
231
232 let data_layout = SmallCStr::new(&target_data_layout);
233 unsafe {
234 llvm::LLVMSetDataLayout(llmod, data_layout.as_ptr());
235 }
236
237 let llvm_target = SmallCStr::new(&versioned_llvm_target(sess));
238 unsafe {
239 llvm::LLVMRustSetNormalizedTarget(llmod, llvm_target.as_ptr());
240 }
241
242 let reloc_model = sess.relocation_model();
243 if matches!(reloc_model, RelocModel::Pic | RelocModel::Pie) {
244 unsafe {
245 llvm::LLVMRustSetModulePICLevel(llmod);
246 }
247 if reloc_model == RelocModel::Pie
250 || tcx.crate_types().iter().all(|ty| *ty == CrateType::Executable)
251 {
252 unsafe {
253 llvm::LLVMRustSetModulePIELevel(llmod);
254 }
255 }
256 }
257
258 unsafe {
264 llvm::LLVMRustSetModuleCodeModel(llmod, to_llvm_code_model(sess.code_model()));
265 }
266
267 if !sess.needs_plt() {
270 llvm::add_module_flag_u32(llmod, llvm::ModuleFlagMergeBehavior::Warning, "RtLibUseGOT", 1);
271 }
272
273 if sess.is_sanitizer_cfi_canonical_jump_tables_enabled() && sess.is_sanitizer_cfi_enabled() {
275 llvm::add_module_flag_u32(
276 llmod,
277 llvm::ModuleFlagMergeBehavior::Override,
278 "CFI Canonical Jump Tables",
279 1,
280 );
281 }
282
283 if sess.is_sanitizer_cfi_normalize_integers_enabled() {
286 llvm::add_module_flag_u32(
287 llmod,
288 llvm::ModuleFlagMergeBehavior::Override,
289 "cfi-normalize-integers",
290 1,
291 );
292 }
293
294 if sess.is_split_lto_unit_enabled() || sess.is_sanitizer_cfi_enabled() {
297 llvm::add_module_flag_u32(
298 llmod,
299 llvm::ModuleFlagMergeBehavior::Override,
300 "EnableSplitLTOUnit",
301 1,
302 );
303 }
304
305 if sess.is_sanitizer_kcfi_enabled() {
307 llvm::add_module_flag_u32(llmod, llvm::ModuleFlagMergeBehavior::Override, "kcfi", 1);
308
309 let pfe =
312 PatchableFunctionEntry::from_config(sess.opts.unstable_opts.patchable_function_entry);
313 if pfe.prefix() > 0 {
314 llvm::add_module_flag_u32(
315 llmod,
316 llvm::ModuleFlagMergeBehavior::Override,
317 "kcfi-offset",
318 pfe.prefix().into(),
319 );
320 }
321
322 if sess.is_sanitizer_kcfi_arity_enabled() {
325 if llvm_version < (21, 0, 0) {
327 tcx.dcx().emit_err(crate::errors::SanitizerKcfiArityRequiresLLVM2100);
328 }
329
330 llvm::add_module_flag_u32(
331 llmod,
332 llvm::ModuleFlagMergeBehavior::Override,
333 "kcfi-arity",
334 1,
335 );
336 }
337 }
338
339 if sess.target.is_like_msvc
341 || (sess.target.options.os == "windows"
342 && sess.target.options.env == "gnu"
343 && sess.target.options.abi == "llvm")
344 {
345 match sess.opts.cg.control_flow_guard {
346 CFGuard::Disabled => {}
347 CFGuard::NoChecks => {
348 llvm::add_module_flag_u32(
350 llmod,
351 llvm::ModuleFlagMergeBehavior::Warning,
352 "cfguard",
353 1,
354 );
355 }
356 CFGuard::Checks => {
357 llvm::add_module_flag_u32(
359 llmod,
360 llvm::ModuleFlagMergeBehavior::Warning,
361 "cfguard",
362 2,
363 );
364 }
365 }
366 }
367
368 if let Some(BranchProtection { bti, pac_ret }) = sess.opts.unstable_opts.branch_protection {
369 if sess.target.arch == "aarch64" {
370 llvm::add_module_flag_u32(
371 llmod,
372 llvm::ModuleFlagMergeBehavior::Min,
373 "branch-target-enforcement",
374 bti.into(),
375 );
376 llvm::add_module_flag_u32(
377 llmod,
378 llvm::ModuleFlagMergeBehavior::Min,
379 "sign-return-address",
380 pac_ret.is_some().into(),
381 );
382 let pac_opts = pac_ret.unwrap_or(PacRet { leaf: false, pc: false, key: PAuthKey::A });
383 llvm::add_module_flag_u32(
384 llmod,
385 llvm::ModuleFlagMergeBehavior::Min,
386 "branch-protection-pauth-lr",
387 pac_opts.pc.into(),
388 );
389 llvm::add_module_flag_u32(
390 llmod,
391 llvm::ModuleFlagMergeBehavior::Min,
392 "sign-return-address-all",
393 pac_opts.leaf.into(),
394 );
395 llvm::add_module_flag_u32(
396 llmod,
397 llvm::ModuleFlagMergeBehavior::Min,
398 "sign-return-address-with-bkey",
399 u32::from(pac_opts.key == PAuthKey::B),
400 );
401 } else {
402 bug!(
403 "branch-protection used on non-AArch64 target; \
404 this should be checked in rustc_session."
405 );
406 }
407 }
408
409 if let CFProtection::Branch | CFProtection::Full = sess.opts.unstable_opts.cf_protection {
411 llvm::add_module_flag_u32(
412 llmod,
413 llvm::ModuleFlagMergeBehavior::Override,
414 "cf-protection-branch",
415 1,
416 );
417 }
418 if let CFProtection::Return | CFProtection::Full = sess.opts.unstable_opts.cf_protection {
419 llvm::add_module_flag_u32(
420 llmod,
421 llvm::ModuleFlagMergeBehavior::Override,
422 "cf-protection-return",
423 1,
424 );
425 }
426
427 if sess.opts.unstable_opts.virtual_function_elimination {
428 llvm::add_module_flag_u32(
429 llmod,
430 llvm::ModuleFlagMergeBehavior::Error,
431 "Virtual Function Elim",
432 1,
433 );
434 }
435
436 if sess.opts.unstable_opts.ehcont_guard {
438 llvm::add_module_flag_u32(llmod, llvm::ModuleFlagMergeBehavior::Warning, "ehcontguard", 1);
439 }
440
441 match sess.opts.unstable_opts.function_return {
442 FunctionReturn::Keep => {}
443 FunctionReturn::ThunkExtern => {
444 llvm::add_module_flag_u32(
445 llmod,
446 llvm::ModuleFlagMergeBehavior::Override,
447 "function_return_thunk_extern",
448 1,
449 );
450 }
451 }
452
453 match (sess.opts.unstable_opts.small_data_threshold, sess.target.small_data_threshold_support())
454 {
455 (Some(threshold), SmallDataThresholdSupport::LlvmModuleFlag(flag)) => {
458 llvm::add_module_flag_u32(
459 llmod,
460 llvm::ModuleFlagMergeBehavior::Error,
461 &flag,
462 threshold as u32,
463 );
464 }
465 _ => (),
466 };
467
468 #[allow(clippy::option_env_unwrap)]
473 let rustc_producer =
474 format!("rustc version {}", option_env!("CFG_VERSION").expect("CFG_VERSION"));
475 let name_metadata = unsafe {
476 llvm::LLVMMDStringInContext2(
477 llcx,
478 rustc_producer.as_c_char_ptr(),
479 rustc_producer.as_bytes().len(),
480 )
481 };
482 unsafe {
483 llvm::LLVMAddNamedMetadataOperand(
484 llmod,
485 c"llvm.ident".as_ptr(),
486 &llvm::LLVMMetadataAsValue(llcx, llvm::LLVMMDNodeInContext2(llcx, &name_metadata, 1)),
487 );
488 }
489
490 let llvm_abiname = &sess.target.options.llvm_abiname;
496 if matches!(sess.target.arch.as_ref(), "riscv32" | "riscv64") && !llvm_abiname.is_empty() {
497 llvm::add_module_flag_str(
498 llmod,
499 llvm::ModuleFlagMergeBehavior::Error,
500 "target-abi",
501 llvm_abiname,
502 );
503 }
504
505 for (key, value, merge_behavior) in &sess.opts.unstable_opts.llvm_module_flag {
507 let merge_behavior = match merge_behavior.as_str() {
508 "error" => llvm::ModuleFlagMergeBehavior::Error,
509 "warning" => llvm::ModuleFlagMergeBehavior::Warning,
510 "require" => llvm::ModuleFlagMergeBehavior::Require,
511 "override" => llvm::ModuleFlagMergeBehavior::Override,
512 "append" => llvm::ModuleFlagMergeBehavior::Append,
513 "appendunique" => llvm::ModuleFlagMergeBehavior::AppendUnique,
514 "max" => llvm::ModuleFlagMergeBehavior::Max,
515 "min" => llvm::ModuleFlagMergeBehavior::Min,
516 _ => unreachable!(),
518 };
519 llvm::add_module_flag_u32(llmod, merge_behavior, key, *value);
520 }
521
522 llmod
523}
524
525impl<'ll, 'tcx> CodegenCx<'ll, 'tcx> {
526 pub(crate) fn new(
527 tcx: TyCtxt<'tcx>,
528 codegen_unit: &'tcx CodegenUnit<'tcx>,
529 llvm_module: &'ll crate::ModuleLlvm,
530 ) -> Self {
531 let use_dll_storage_attrs = tcx.sess.target.is_like_windows;
584
585 let tls_model = to_llvm_tls_model(tcx.sess.tls_model());
586
587 let (llcx, llmod) = (&*llvm_module.llcx, llvm_module.llmod());
588
589 let coverage_cx =
590 tcx.sess.instrument_coverage().then(coverageinfo::CguCoverageContext::new);
591
592 let dbg_cx = if tcx.sess.opts.debuginfo != DebugInfo::None {
593 let dctx = debuginfo::CodegenUnitDebugContext::new(llmod);
594 debuginfo::metadata::build_compile_unit_di_node(
595 tcx,
596 codegen_unit.name().as_str(),
597 &dctx,
598 );
599 Some(dctx)
600 } else {
601 None
602 };
603
604 GenericCx(
605 FullCx {
606 tcx,
607 scx: SimpleCx::new(llmod, llcx, tcx.data_layout.pointer_size),
608 use_dll_storage_attrs,
609 tls_model,
610 codegen_unit,
611 instances: Default::default(),
612 vtables: Default::default(),
613 const_str_cache: Default::default(),
614 const_globals: Default::default(),
615 statics_to_rauw: RefCell::new(Vec::new()),
616 used_statics: Vec::new(),
617 compiler_used_statics: Vec::new(),
618 type_lowering: Default::default(),
619 scalar_lltypes: Default::default(),
620 coverage_cx,
621 dbg_cx,
622 eh_personality: Cell::new(None),
623 eh_catch_typeinfo: Cell::new(None),
624 rust_try_fn: Cell::new(None),
625 intrinsics: Default::default(),
626 local_gen_sym_counter: Cell::new(0),
627 renamed_statics: Default::default(),
628 },
629 PhantomData,
630 )
631 }
632
633 pub(crate) fn statics_to_rauw(&self) -> &RefCell<Vec<(&'ll Value, &'ll Value)>> {
634 &self.statics_to_rauw
635 }
636
637 #[inline]
639 #[track_caller]
640 pub(crate) fn coverage_cx(&self) -> &coverageinfo::CguCoverageContext<'ll, 'tcx> {
641 self.coverage_cx.as_ref().expect("only called when coverage instrumentation is enabled")
642 }
643
644 pub(crate) fn create_used_variable_impl(&self, name: &'static CStr, values: &[&'ll Value]) {
645 let array = self.const_array(self.type_ptr(), values);
646
647 let g = llvm::add_global(self.llmod, self.val_ty(array), name);
648 llvm::set_initializer(g, array);
649 llvm::set_linkage(g, llvm::Linkage::AppendingLinkage);
650 llvm::set_section(g, c"llvm.metadata");
651 }
652}
653impl<'ll> SimpleCx<'ll> {
654 pub(crate) fn get_return_type(&self, ty: &'ll Type) -> &'ll Type {
655 assert_eq!(self.type_kind(ty), TypeKind::Function);
656 unsafe { llvm::LLVMGetReturnType(ty) }
657 }
658 pub(crate) fn get_type_of_global(&self, val: &'ll Value) -> &'ll Type {
659 unsafe { llvm::LLVMGlobalGetValueType(val) }
660 }
661 pub(crate) fn val_ty(&self, v: &'ll Value) -> &'ll Type {
662 common::val_ty(v)
663 }
664}
665impl<'ll> SimpleCx<'ll> {
666 pub(crate) fn new(
667 llmod: &'ll llvm::Module,
668 llcx: &'ll llvm::Context,
669 pointer_size: Size,
670 ) -> Self {
671 let isize_ty = llvm::Type::ix_llcx(llcx, pointer_size.bits());
672 Self(SCx { llmod, llcx, isize_ty }, PhantomData)
673 }
674}
675
676impl<'ll, CX: Borrow<SCx<'ll>>> GenericCx<'ll, CX> {
677 pub(crate) fn get_metadata_value(&self, metadata: &'ll Metadata) -> &'ll Value {
678 llvm::LLVMMetadataAsValue(self.llcx(), metadata)
679 }
680
681 pub(crate) fn get_const_i64(&self, n: u64) -> &'ll Value {
684 let ty = unsafe { llvm::LLVMInt64TypeInContext(self.llcx()) };
685 unsafe { llvm::LLVMConstInt(ty, n, llvm::False) }
686 }
687
688 pub(crate) fn get_function(&self, name: &str) -> Option<&'ll Value> {
689 let name = SmallCStr::new(name);
690 unsafe { llvm::LLVMGetNamedFunction((**self).borrow().llmod, name.as_ptr()) }
691 }
692
693 pub(crate) fn get_md_kind_id(&self, name: &str) -> llvm::MetadataKindId {
694 unsafe {
695 llvm::LLVMGetMDKindIDInContext(
696 self.llcx(),
697 name.as_ptr() as *const c_char,
698 name.len() as c_uint,
699 )
700 }
701 }
702
703 pub(crate) fn create_metadata(&self, name: String) -> Option<&'ll Metadata> {
704 Some(unsafe {
705 llvm::LLVMMDStringInContext2(self.llcx(), name.as_ptr() as *const c_char, name.len())
706 })
707 }
708
709 pub(crate) fn get_functions(&self) -> Vec<&'ll Value> {
710 let mut functions = vec![];
711 let mut func = unsafe { llvm::LLVMGetFirstFunction(self.llmod()) };
712 while let Some(f) = func {
713 functions.push(f);
714 func = unsafe { llvm::LLVMGetNextFunction(f) }
715 }
716 functions
717 }
718}
719
720impl<'ll, 'tcx> MiscCodegenMethods<'tcx> for CodegenCx<'ll, 'tcx> {
721 fn vtables(
722 &self,
723 ) -> &RefCell<FxHashMap<(Ty<'tcx>, Option<ty::ExistentialTraitRef<'tcx>>), &'ll Value>> {
724 &self.vtables
725 }
726
727 fn apply_vcall_visibility_metadata(
728 &self,
729 ty: Ty<'tcx>,
730 poly_trait_ref: Option<ty::ExistentialTraitRef<'tcx>>,
731 vtable: &'ll Value,
732 ) {
733 apply_vcall_visibility_metadata(self, ty, poly_trait_ref, vtable);
734 }
735
736 fn get_fn(&self, instance: Instance<'tcx>) -> &'ll Value {
737 get_fn(self, instance)
738 }
739
740 fn get_fn_addr(&self, instance: Instance<'tcx>) -> &'ll Value {
741 get_fn(self, instance)
742 }
743
744 fn eh_personality(&self) -> &'ll Value {
745 if let Some(llpersonality) = self.eh_personality.get() {
766 return llpersonality;
767 }
768
769 let name = if wants_msvc_seh(self.sess()) {
770 Some("__CxxFrameHandler3")
771 } else if wants_wasm_eh(self.sess()) {
772 Some("__gxx_wasm_personality_v0")
777 } else {
778 None
779 };
780
781 let tcx = self.tcx;
782 let llfn = match tcx.lang_items().eh_personality() {
783 Some(def_id) if name.is_none() => self.get_fn_addr(ty::Instance::expect_resolve(
784 tcx,
785 self.typing_env(),
786 def_id,
787 ty::List::empty(),
788 DUMMY_SP,
789 )),
790 _ => {
791 let name = name.unwrap_or("rust_eh_personality");
792 if let Some(llfn) = self.get_declared_value(name) {
793 llfn
794 } else {
795 let fty = self.type_variadic_func(&[], self.type_i32());
796 let llfn = self.declare_cfn(name, llvm::UnnamedAddr::Global, fty);
797 let target_cpu = attributes::target_cpu_attr(self);
798 attributes::apply_to_llfn(llfn, llvm::AttributePlace::Function, &[target_cpu]);
799 llfn
800 }
801 }
802 };
803 self.eh_personality.set(Some(llfn));
804 llfn
805 }
806
807 fn sess(&self) -> &Session {
808 self.tcx.sess
809 }
810
811 fn set_frame_pointer_type(&self, llfn: &'ll Value) {
812 if let Some(attr) = attributes::frame_pointer_type_attr(self) {
813 attributes::apply_to_llfn(llfn, llvm::AttributePlace::Function, &[attr]);
814 }
815 }
816
817 fn apply_target_cpu_attr(&self, llfn: &'ll Value) {
818 let mut attrs = SmallVec::<[_; 2]>::new();
819 attrs.push(attributes::target_cpu_attr(self));
820 attrs.extend(attributes::tune_cpu_attr(self));
821 attributes::apply_to_llfn(llfn, llvm::AttributePlace::Function, &attrs);
822 }
823
824 fn declare_c_main(&self, fn_type: Self::Type) -> Option<Self::Function> {
825 let entry_name = self.sess().target.entry_name.as_ref();
826 if self.get_declared_value(entry_name).is_none() {
827 Some(self.declare_entry_fn(
828 entry_name,
829 llvm::CallConv::from_conv(
830 self.sess().target.entry_abi,
831 self.sess().target.arch.borrow(),
832 ),
833 llvm::UnnamedAddr::Global,
834 fn_type,
835 ))
836 } else {
837 None
840 }
841 }
842}
843
844impl<'ll> CodegenCx<'ll, '_> {
845 pub(crate) fn get_intrinsic(&self, key: &str) -> (&'ll Type, &'ll Value) {
846 if let Some(v) = self.intrinsics.borrow().get(key).cloned() {
847 return v;
848 }
849
850 self.declare_intrinsic(key).unwrap_or_else(|| bug!("unknown intrinsic '{}'", key))
851 }
852
853 fn insert_intrinsic(
854 &self,
855 name: &'static str,
856 args: Option<&[&'ll llvm::Type]>,
857 ret: &'ll llvm::Type,
858 ) -> (&'ll llvm::Type, &'ll llvm::Value) {
859 let fn_ty = if let Some(args) = args {
860 self.type_func(args, ret)
861 } else {
862 self.type_variadic_func(&[], ret)
863 };
864 let f = self.declare_cfn(name, llvm::UnnamedAddr::No, fn_ty);
865 self.intrinsics.borrow_mut().insert(name, (fn_ty, f));
866 (fn_ty, f)
867 }
868
869 fn declare_intrinsic(&self, key: &str) -> Option<(&'ll Type, &'ll Value)> {
870 macro_rules! ifn {
871 ($name:expr, fn() -> $ret:expr) => (
872 if key == $name {
873 return Some(self.insert_intrinsic($name, Some(&[]), $ret));
874 }
875 );
876 ($name:expr, fn(...) -> $ret:expr) => (
877 if key == $name {
878 return Some(self.insert_intrinsic($name, None, $ret));
879 }
880 );
881 ($name:expr, fn($($arg:expr),*) -> $ret:expr) => (
882 if key == $name {
883 return Some(self.insert_intrinsic($name, Some(&[$($arg),*]), $ret));
884 }
885 );
886 }
887 macro_rules! mk_struct {
888 ($($field_ty:expr),*) => (self.type_struct( &[$($field_ty),*], false))
889 }
890
891 let ptr = self.type_ptr();
892 let void = self.type_void();
893 let i1 = self.type_i1();
894 let t_i8 = self.type_i8();
895 let t_i16 = self.type_i16();
896 let t_i32 = self.type_i32();
897 let t_i64 = self.type_i64();
898 let t_i128 = self.type_i128();
899 let t_isize = self.type_isize();
900 let t_f16 = self.type_f16();
901 let t_f32 = self.type_f32();
902 let t_f64 = self.type_f64();
903 let t_f128 = self.type_f128();
904 let t_metadata = self.type_metadata();
905 let t_token = self.type_token();
906
907 ifn!("llvm.wasm.get.exception", fn(t_token) -> ptr);
908 ifn!("llvm.wasm.get.ehselector", fn(t_token) -> t_i32);
909
910 ifn!("llvm.wasm.trunc.unsigned.i32.f32", fn(t_f32) -> t_i32);
911 ifn!("llvm.wasm.trunc.unsigned.i32.f64", fn(t_f64) -> t_i32);
912 ifn!("llvm.wasm.trunc.unsigned.i64.f32", fn(t_f32) -> t_i64);
913 ifn!("llvm.wasm.trunc.unsigned.i64.f64", fn(t_f64) -> t_i64);
914 ifn!("llvm.wasm.trunc.signed.i32.f32", fn(t_f32) -> t_i32);
915 ifn!("llvm.wasm.trunc.signed.i32.f64", fn(t_f64) -> t_i32);
916 ifn!("llvm.wasm.trunc.signed.i64.f32", fn(t_f32) -> t_i64);
917 ifn!("llvm.wasm.trunc.signed.i64.f64", fn(t_f64) -> t_i64);
918
919 ifn!("llvm.fptosi.sat.i8.f32", fn(t_f32) -> t_i8);
920 ifn!("llvm.fptosi.sat.i16.f32", fn(t_f32) -> t_i16);
921 ifn!("llvm.fptosi.sat.i32.f32", fn(t_f32) -> t_i32);
922 ifn!("llvm.fptosi.sat.i64.f32", fn(t_f32) -> t_i64);
923 ifn!("llvm.fptosi.sat.i128.f32", fn(t_f32) -> t_i128);
924 ifn!("llvm.fptosi.sat.i8.f64", fn(t_f64) -> t_i8);
925 ifn!("llvm.fptosi.sat.i16.f64", fn(t_f64) -> t_i16);
926 ifn!("llvm.fptosi.sat.i32.f64", fn(t_f64) -> t_i32);
927 ifn!("llvm.fptosi.sat.i64.f64", fn(t_f64) -> t_i64);
928 ifn!("llvm.fptosi.sat.i128.f64", fn(t_f64) -> t_i128);
929
930 ifn!("llvm.fptoui.sat.i8.f32", fn(t_f32) -> t_i8);
931 ifn!("llvm.fptoui.sat.i16.f32", fn(t_f32) -> t_i16);
932 ifn!("llvm.fptoui.sat.i32.f32", fn(t_f32) -> t_i32);
933 ifn!("llvm.fptoui.sat.i64.f32", fn(t_f32) -> t_i64);
934 ifn!("llvm.fptoui.sat.i128.f32", fn(t_f32) -> t_i128);
935 ifn!("llvm.fptoui.sat.i8.f64", fn(t_f64) -> t_i8);
936 ifn!("llvm.fptoui.sat.i16.f64", fn(t_f64) -> t_i16);
937 ifn!("llvm.fptoui.sat.i32.f64", fn(t_f64) -> t_i32);
938 ifn!("llvm.fptoui.sat.i64.f64", fn(t_f64) -> t_i64);
939 ifn!("llvm.fptoui.sat.i128.f64", fn(t_f64) -> t_i128);
940
941 ifn!("llvm.trap", fn() -> void);
942 ifn!("llvm.debugtrap", fn() -> void);
943 ifn!("llvm.frameaddress", fn(t_i32) -> ptr);
944
945 ifn!("llvm.powi.f16.i32", fn(t_f16, t_i32) -> t_f16);
946 ifn!("llvm.powi.f32.i32", fn(t_f32, t_i32) -> t_f32);
947 ifn!("llvm.powi.f64.i32", fn(t_f64, t_i32) -> t_f64);
948 ifn!("llvm.powi.f128.i32", fn(t_f128, t_i32) -> t_f128);
949
950 ifn!("llvm.pow.f16", fn(t_f16, t_f16) -> t_f16);
951 ifn!("llvm.pow.f32", fn(t_f32, t_f32) -> t_f32);
952 ifn!("llvm.pow.f64", fn(t_f64, t_f64) -> t_f64);
953 ifn!("llvm.pow.f128", fn(t_f128, t_f128) -> t_f128);
954
955 ifn!("llvm.sqrt.f16", fn(t_f16) -> t_f16);
956 ifn!("llvm.sqrt.f32", fn(t_f32) -> t_f32);
957 ifn!("llvm.sqrt.f64", fn(t_f64) -> t_f64);
958 ifn!("llvm.sqrt.f128", fn(t_f128) -> t_f128);
959
960 ifn!("llvm.sin.f16", fn(t_f16) -> t_f16);
961 ifn!("llvm.sin.f32", fn(t_f32) -> t_f32);
962 ifn!("llvm.sin.f64", fn(t_f64) -> t_f64);
963 ifn!("llvm.sin.f128", fn(t_f128) -> t_f128);
964
965 ifn!("llvm.cos.f16", fn(t_f16) -> t_f16);
966 ifn!("llvm.cos.f32", fn(t_f32) -> t_f32);
967 ifn!("llvm.cos.f64", fn(t_f64) -> t_f64);
968 ifn!("llvm.cos.f128", fn(t_f128) -> t_f128);
969
970 ifn!("llvm.exp.f16", fn(t_f16) -> t_f16);
971 ifn!("llvm.exp.f32", fn(t_f32) -> t_f32);
972 ifn!("llvm.exp.f64", fn(t_f64) -> t_f64);
973 ifn!("llvm.exp.f128", fn(t_f128) -> t_f128);
974
975 ifn!("llvm.exp2.f16", fn(t_f16) -> t_f16);
976 ifn!("llvm.exp2.f32", fn(t_f32) -> t_f32);
977 ifn!("llvm.exp2.f64", fn(t_f64) -> t_f64);
978 ifn!("llvm.exp2.f128", fn(t_f128) -> t_f128);
979
980 ifn!("llvm.log.f16", fn(t_f16) -> t_f16);
981 ifn!("llvm.log.f32", fn(t_f32) -> t_f32);
982 ifn!("llvm.log.f64", fn(t_f64) -> t_f64);
983 ifn!("llvm.log.f128", fn(t_f128) -> t_f128);
984
985 ifn!("llvm.log10.f16", fn(t_f16) -> t_f16);
986 ifn!("llvm.log10.f32", fn(t_f32) -> t_f32);
987 ifn!("llvm.log10.f64", fn(t_f64) -> t_f64);
988 ifn!("llvm.log10.f128", fn(t_f128) -> t_f128);
989
990 ifn!("llvm.log2.f16", fn(t_f16) -> t_f16);
991 ifn!("llvm.log2.f32", fn(t_f32) -> t_f32);
992 ifn!("llvm.log2.f64", fn(t_f64) -> t_f64);
993 ifn!("llvm.log2.f128", fn(t_f128) -> t_f128);
994
995 ifn!("llvm.fma.f16", fn(t_f16, t_f16, t_f16) -> t_f16);
996 ifn!("llvm.fma.f32", fn(t_f32, t_f32, t_f32) -> t_f32);
997 ifn!("llvm.fma.f64", fn(t_f64, t_f64, t_f64) -> t_f64);
998 ifn!("llvm.fma.f128", fn(t_f128, t_f128, t_f128) -> t_f128);
999
1000 ifn!("llvm.fmuladd.f16", fn(t_f16, t_f16, t_f16) -> t_f16);
1001 ifn!("llvm.fmuladd.f32", fn(t_f32, t_f32, t_f32) -> t_f32);
1002 ifn!("llvm.fmuladd.f64", fn(t_f64, t_f64, t_f64) -> t_f64);
1003 ifn!("llvm.fmuladd.f128", fn(t_f128, t_f128, t_f128) -> t_f128);
1004
1005 ifn!("llvm.fabs.f16", fn(t_f16) -> t_f16);
1006 ifn!("llvm.fabs.f32", fn(t_f32) -> t_f32);
1007 ifn!("llvm.fabs.f64", fn(t_f64) -> t_f64);
1008 ifn!("llvm.fabs.f128", fn(t_f128) -> t_f128);
1009
1010 ifn!("llvm.minnum.f16", fn(t_f16, t_f16) -> t_f16);
1011 ifn!("llvm.minnum.f32", fn(t_f32, t_f32) -> t_f32);
1012 ifn!("llvm.minnum.f64", fn(t_f64, t_f64) -> t_f64);
1013 ifn!("llvm.minnum.f128", fn(t_f128, t_f128) -> t_f128);
1014
1015 ifn!("llvm.minimum.f16", fn(t_f16, t_f16) -> t_f16);
1016 ifn!("llvm.minimum.f32", fn(t_f32, t_f32) -> t_f32);
1017 ifn!("llvm.minimum.f64", fn(t_f64, t_f64) -> t_f64);
1018 ifn!("llvm.maxnum.f16", fn(t_f16, t_f16) -> t_f16);
1024 ifn!("llvm.maxnum.f32", fn(t_f32, t_f32) -> t_f32);
1025 ifn!("llvm.maxnum.f64", fn(t_f64, t_f64) -> t_f64);
1026 ifn!("llvm.maxnum.f128", fn(t_f128, t_f128) -> t_f128);
1027
1028 ifn!("llvm.maximum.f16", fn(t_f16, t_f16) -> t_f16);
1029 ifn!("llvm.maximum.f32", fn(t_f32, t_f32) -> t_f32);
1030 ifn!("llvm.maximum.f64", fn(t_f64, t_f64) -> t_f64);
1031 ifn!("llvm.floor.f16", fn(t_f16) -> t_f16);
1037 ifn!("llvm.floor.f32", fn(t_f32) -> t_f32);
1038 ifn!("llvm.floor.f64", fn(t_f64) -> t_f64);
1039 ifn!("llvm.floor.f128", fn(t_f128) -> t_f128);
1040
1041 ifn!("llvm.ceil.f16", fn(t_f16) -> t_f16);
1042 ifn!("llvm.ceil.f32", fn(t_f32) -> t_f32);
1043 ifn!("llvm.ceil.f64", fn(t_f64) -> t_f64);
1044 ifn!("llvm.ceil.f128", fn(t_f128) -> t_f128);
1045
1046 ifn!("llvm.trunc.f16", fn(t_f16) -> t_f16);
1047 ifn!("llvm.trunc.f32", fn(t_f32) -> t_f32);
1048 ifn!("llvm.trunc.f64", fn(t_f64) -> t_f64);
1049 ifn!("llvm.trunc.f128", fn(t_f128) -> t_f128);
1050
1051 ifn!("llvm.copysign.f16", fn(t_f16, t_f16) -> t_f16);
1052 ifn!("llvm.copysign.f32", fn(t_f32, t_f32) -> t_f32);
1053 ifn!("llvm.copysign.f64", fn(t_f64, t_f64) -> t_f64);
1054 ifn!("llvm.copysign.f128", fn(t_f128, t_f128) -> t_f128);
1055
1056 ifn!("llvm.round.f16", fn(t_f16) -> t_f16);
1057 ifn!("llvm.round.f32", fn(t_f32) -> t_f32);
1058 ifn!("llvm.round.f64", fn(t_f64) -> t_f64);
1059 ifn!("llvm.round.f128", fn(t_f128) -> t_f128);
1060
1061 ifn!("llvm.roundeven.f16", fn(t_f16) -> t_f16);
1062 ifn!("llvm.roundeven.f32", fn(t_f32) -> t_f32);
1063 ifn!("llvm.roundeven.f64", fn(t_f64) -> t_f64);
1064 ifn!("llvm.roundeven.f128", fn(t_f128) -> t_f128);
1065
1066 ifn!("llvm.rint.f16", fn(t_f16) -> t_f16);
1067 ifn!("llvm.rint.f32", fn(t_f32) -> t_f32);
1068 ifn!("llvm.rint.f64", fn(t_f64) -> t_f64);
1069 ifn!("llvm.rint.f128", fn(t_f128) -> t_f128);
1070
1071 ifn!("llvm.nearbyint.f16", fn(t_f16) -> t_f16);
1072 ifn!("llvm.nearbyint.f32", fn(t_f32) -> t_f32);
1073 ifn!("llvm.nearbyint.f64", fn(t_f64) -> t_f64);
1074 ifn!("llvm.nearbyint.f128", fn(t_f128) -> t_f128);
1075
1076 ifn!("llvm.ctpop.i8", fn(t_i8) -> t_i8);
1077 ifn!("llvm.ctpop.i16", fn(t_i16) -> t_i16);
1078 ifn!("llvm.ctpop.i32", fn(t_i32) -> t_i32);
1079 ifn!("llvm.ctpop.i64", fn(t_i64) -> t_i64);
1080 ifn!("llvm.ctpop.i128", fn(t_i128) -> t_i128);
1081
1082 ifn!("llvm.ctlz.i8", fn(t_i8, i1) -> t_i8);
1083 ifn!("llvm.ctlz.i16", fn(t_i16, i1) -> t_i16);
1084 ifn!("llvm.ctlz.i32", fn(t_i32, i1) -> t_i32);
1085 ifn!("llvm.ctlz.i64", fn(t_i64, i1) -> t_i64);
1086 ifn!("llvm.ctlz.i128", fn(t_i128, i1) -> t_i128);
1087
1088 ifn!("llvm.cttz.i8", fn(t_i8, i1) -> t_i8);
1089 ifn!("llvm.cttz.i16", fn(t_i16, i1) -> t_i16);
1090 ifn!("llvm.cttz.i32", fn(t_i32, i1) -> t_i32);
1091 ifn!("llvm.cttz.i64", fn(t_i64, i1) -> t_i64);
1092 ifn!("llvm.cttz.i128", fn(t_i128, i1) -> t_i128);
1093
1094 ifn!("llvm.bswap.i16", fn(t_i16) -> t_i16);
1095 ifn!("llvm.bswap.i32", fn(t_i32) -> t_i32);
1096 ifn!("llvm.bswap.i64", fn(t_i64) -> t_i64);
1097 ifn!("llvm.bswap.i128", fn(t_i128) -> t_i128);
1098
1099 ifn!("llvm.bitreverse.i8", fn(t_i8) -> t_i8);
1100 ifn!("llvm.bitreverse.i16", fn(t_i16) -> t_i16);
1101 ifn!("llvm.bitreverse.i32", fn(t_i32) -> t_i32);
1102 ifn!("llvm.bitreverse.i64", fn(t_i64) -> t_i64);
1103 ifn!("llvm.bitreverse.i128", fn(t_i128) -> t_i128);
1104
1105 ifn!("llvm.fshl.i8", fn(t_i8, t_i8, t_i8) -> t_i8);
1106 ifn!("llvm.fshl.i16", fn(t_i16, t_i16, t_i16) -> t_i16);
1107 ifn!("llvm.fshl.i32", fn(t_i32, t_i32, t_i32) -> t_i32);
1108 ifn!("llvm.fshl.i64", fn(t_i64, t_i64, t_i64) -> t_i64);
1109 ifn!("llvm.fshl.i128", fn(t_i128, t_i128, t_i128) -> t_i128);
1110
1111 ifn!("llvm.fshr.i8", fn(t_i8, t_i8, t_i8) -> t_i8);
1112 ifn!("llvm.fshr.i16", fn(t_i16, t_i16, t_i16) -> t_i16);
1113 ifn!("llvm.fshr.i32", fn(t_i32, t_i32, t_i32) -> t_i32);
1114 ifn!("llvm.fshr.i64", fn(t_i64, t_i64, t_i64) -> t_i64);
1115 ifn!("llvm.fshr.i128", fn(t_i128, t_i128, t_i128) -> t_i128);
1116
1117 ifn!("llvm.sadd.with.overflow.i8", fn(t_i8, t_i8) -> mk_struct! {t_i8, i1});
1118 ifn!("llvm.sadd.with.overflow.i16", fn(t_i16, t_i16) -> mk_struct! {t_i16, i1});
1119 ifn!("llvm.sadd.with.overflow.i32", fn(t_i32, t_i32) -> mk_struct! {t_i32, i1});
1120 ifn!("llvm.sadd.with.overflow.i64", fn(t_i64, t_i64) -> mk_struct! {t_i64, i1});
1121 ifn!("llvm.sadd.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct! {t_i128, i1});
1122
1123 ifn!("llvm.uadd.with.overflow.i8", fn(t_i8, t_i8) -> mk_struct! {t_i8, i1});
1124 ifn!("llvm.uadd.with.overflow.i16", fn(t_i16, t_i16) -> mk_struct! {t_i16, i1});
1125 ifn!("llvm.uadd.with.overflow.i32", fn(t_i32, t_i32) -> mk_struct! {t_i32, i1});
1126 ifn!("llvm.uadd.with.overflow.i64", fn(t_i64, t_i64) -> mk_struct! {t_i64, i1});
1127 ifn!("llvm.uadd.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct! {t_i128, i1});
1128
1129 ifn!("llvm.ssub.with.overflow.i8", fn(t_i8, t_i8) -> mk_struct! {t_i8, i1});
1130 ifn!("llvm.ssub.with.overflow.i16", fn(t_i16, t_i16) -> mk_struct! {t_i16, i1});
1131 ifn!("llvm.ssub.with.overflow.i32", fn(t_i32, t_i32) -> mk_struct! {t_i32, i1});
1132 ifn!("llvm.ssub.with.overflow.i64", fn(t_i64, t_i64) -> mk_struct! {t_i64, i1});
1133 ifn!("llvm.ssub.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct! {t_i128, i1});
1134
1135 ifn!("llvm.usub.with.overflow.i8", fn(t_i8, t_i8) -> mk_struct! {t_i8, i1});
1136 ifn!("llvm.usub.with.overflow.i16", fn(t_i16, t_i16) -> mk_struct! {t_i16, i1});
1137 ifn!("llvm.usub.with.overflow.i32", fn(t_i32, t_i32) -> mk_struct! {t_i32, i1});
1138 ifn!("llvm.usub.with.overflow.i64", fn(t_i64, t_i64) -> mk_struct! {t_i64, i1});
1139 ifn!("llvm.usub.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct! {t_i128, i1});
1140
1141 ifn!("llvm.smul.with.overflow.i8", fn(t_i8, t_i8) -> mk_struct! {t_i8, i1});
1142 ifn!("llvm.smul.with.overflow.i16", fn(t_i16, t_i16) -> mk_struct! {t_i16, i1});
1143 ifn!("llvm.smul.with.overflow.i32", fn(t_i32, t_i32) -> mk_struct! {t_i32, i1});
1144 ifn!("llvm.smul.with.overflow.i64", fn(t_i64, t_i64) -> mk_struct! {t_i64, i1});
1145 ifn!("llvm.smul.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct! {t_i128, i1});
1146
1147 ifn!("llvm.umul.with.overflow.i8", fn(t_i8, t_i8) -> mk_struct! {t_i8, i1});
1148 ifn!("llvm.umul.with.overflow.i16", fn(t_i16, t_i16) -> mk_struct! {t_i16, i1});
1149 ifn!("llvm.umul.with.overflow.i32", fn(t_i32, t_i32) -> mk_struct! {t_i32, i1});
1150 ifn!("llvm.umul.with.overflow.i64", fn(t_i64, t_i64) -> mk_struct! {t_i64, i1});
1151 ifn!("llvm.umul.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct! {t_i128, i1});
1152
1153 ifn!("llvm.sadd.sat.i8", fn(t_i8, t_i8) -> t_i8);
1154 ifn!("llvm.sadd.sat.i16", fn(t_i16, t_i16) -> t_i16);
1155 ifn!("llvm.sadd.sat.i32", fn(t_i32, t_i32) -> t_i32);
1156 ifn!("llvm.sadd.sat.i64", fn(t_i64, t_i64) -> t_i64);
1157 ifn!("llvm.sadd.sat.i128", fn(t_i128, t_i128) -> t_i128);
1158
1159 ifn!("llvm.uadd.sat.i8", fn(t_i8, t_i8) -> t_i8);
1160 ifn!("llvm.uadd.sat.i16", fn(t_i16, t_i16) -> t_i16);
1161 ifn!("llvm.uadd.sat.i32", fn(t_i32, t_i32) -> t_i32);
1162 ifn!("llvm.uadd.sat.i64", fn(t_i64, t_i64) -> t_i64);
1163 ifn!("llvm.uadd.sat.i128", fn(t_i128, t_i128) -> t_i128);
1164
1165 ifn!("llvm.ssub.sat.i8", fn(t_i8, t_i8) -> t_i8);
1166 ifn!("llvm.ssub.sat.i16", fn(t_i16, t_i16) -> t_i16);
1167 ifn!("llvm.ssub.sat.i32", fn(t_i32, t_i32) -> t_i32);
1168 ifn!("llvm.ssub.sat.i64", fn(t_i64, t_i64) -> t_i64);
1169 ifn!("llvm.ssub.sat.i128", fn(t_i128, t_i128) -> t_i128);
1170
1171 ifn!("llvm.usub.sat.i8", fn(t_i8, t_i8) -> t_i8);
1172 ifn!("llvm.usub.sat.i16", fn(t_i16, t_i16) -> t_i16);
1173 ifn!("llvm.usub.sat.i32", fn(t_i32, t_i32) -> t_i32);
1174 ifn!("llvm.usub.sat.i64", fn(t_i64, t_i64) -> t_i64);
1175 ifn!("llvm.usub.sat.i128", fn(t_i128, t_i128) -> t_i128);
1176
1177 ifn!("llvm.scmp.i8.i8", fn(t_i8, t_i8) -> t_i8);
1178 ifn!("llvm.scmp.i8.i16", fn(t_i16, t_i16) -> t_i8);
1179 ifn!("llvm.scmp.i8.i32", fn(t_i32, t_i32) -> t_i8);
1180 ifn!("llvm.scmp.i8.i64", fn(t_i64, t_i64) -> t_i8);
1181 ifn!("llvm.scmp.i8.i128", fn(t_i128, t_i128) -> t_i8);
1182
1183 ifn!("llvm.ucmp.i8.i8", fn(t_i8, t_i8) -> t_i8);
1184 ifn!("llvm.ucmp.i8.i16", fn(t_i16, t_i16) -> t_i8);
1185 ifn!("llvm.ucmp.i8.i32", fn(t_i32, t_i32) -> t_i8);
1186 ifn!("llvm.ucmp.i8.i64", fn(t_i64, t_i64) -> t_i8);
1187 ifn!("llvm.ucmp.i8.i128", fn(t_i128, t_i128) -> t_i8);
1188
1189 ifn!("llvm.lifetime.start.p0i8", fn(t_i64, ptr) -> void);
1190 ifn!("llvm.lifetime.end.p0i8", fn(t_i64, ptr) -> void);
1191
1192 ifn!("llvm.is.constant.i1", fn(i1) -> i1);
1197 ifn!("llvm.is.constant.i8", fn(t_i8) -> i1);
1198 ifn!("llvm.is.constant.i16", fn(t_i16) -> i1);
1199 ifn!("llvm.is.constant.i32", fn(t_i32) -> i1);
1200 ifn!("llvm.is.constant.i64", fn(t_i64) -> i1);
1201 ifn!("llvm.is.constant.i128", fn(t_i128) -> i1);
1202 ifn!("llvm.is.constant.isize", fn(t_isize) -> i1);
1203 ifn!("llvm.is.constant.f16", fn(t_f16) -> i1);
1204 ifn!("llvm.is.constant.f32", fn(t_f32) -> i1);
1205 ifn!("llvm.is.constant.f64", fn(t_f64) -> i1);
1206 ifn!("llvm.is.constant.f128", fn(t_f128) -> i1);
1207 ifn!("llvm.is.constant.ptr", fn(ptr) -> i1);
1208
1209 ifn!("llvm.expect.i1", fn(i1, i1) -> i1);
1210 ifn!("llvm.eh.typeid.for", fn(ptr) -> t_i32);
1211 ifn!("llvm.localescape", fn(...) -> void);
1212 ifn!("llvm.localrecover", fn(ptr, ptr, t_i32) -> ptr);
1213 ifn!("llvm.x86.seh.recoverfp", fn(ptr, ptr) -> ptr);
1214
1215 ifn!("llvm.assume", fn(i1) -> void);
1216 ifn!("llvm.prefetch", fn(ptr, t_i32, t_i32, t_i32) -> void);
1217
1218 match self.sess().target.arch.as_ref() {
1222 "avr" | "msp430" => ifn!("memcmp", fn(ptr, ptr, t_isize) -> t_i16),
1223 _ => ifn!("memcmp", fn(ptr, ptr, t_isize) -> t_i32),
1224 }
1225
1226 ifn!("llvm.va_start", fn(ptr) -> void);
1228 ifn!("llvm.va_end", fn(ptr) -> void);
1229 ifn!("llvm.va_copy", fn(ptr, ptr) -> void);
1230
1231 if self.sess().instrument_coverage() {
1232 ifn!("llvm.instrprof.increment", fn(ptr, t_i64, t_i32, t_i32) -> void);
1233 ifn!("llvm.instrprof.mcdc.parameters", fn(ptr, t_i64, t_i32) -> void);
1234 ifn!("llvm.instrprof.mcdc.tvbitmap.update", fn(ptr, t_i64, t_i32, ptr) -> void);
1235 }
1236
1237 ifn!("llvm.type.test", fn(ptr, t_metadata) -> i1);
1238 ifn!("llvm.type.checked.load", fn(ptr, t_i32, t_metadata) -> mk_struct! {ptr, i1});
1239
1240 if self.sess().opts.debuginfo != DebugInfo::None {
1241 ifn!("llvm.dbg.declare", fn(t_metadata, t_metadata) -> void);
1242 ifn!("llvm.dbg.value", fn(t_metadata, t_i64, t_metadata) -> void);
1243 }
1244
1245 ifn!("llvm.ptrmask", fn(ptr, t_isize) -> ptr);
1246 ifn!("llvm.threadlocal.address", fn(ptr) -> ptr);
1247
1248 None
1249 }
1250
1251 pub(crate) fn eh_catch_typeinfo(&self) -> &'ll Value {
1252 if let Some(eh_catch_typeinfo) = self.eh_catch_typeinfo.get() {
1253 return eh_catch_typeinfo;
1254 }
1255 let tcx = self.tcx;
1256 assert!(self.sess().target.os == "emscripten");
1257 let eh_catch_typeinfo = match tcx.lang_items().eh_catch_typeinfo() {
1258 Some(def_id) => self.get_static(def_id),
1259 _ => {
1260 let ty = self.type_struct(&[self.type_ptr(), self.type_ptr()], false);
1261 self.declare_global(&mangle_internal_symbol(self.tcx, "rust_eh_catch_typeinfo"), ty)
1262 }
1263 };
1264 self.eh_catch_typeinfo.set(Some(eh_catch_typeinfo));
1265 eh_catch_typeinfo
1266 }
1267}
1268
1269impl CodegenCx<'_, '_> {
1270 pub(crate) fn generate_local_symbol_name(&self, prefix: &str) -> String {
1273 let idx = self.local_gen_sym_counter.get();
1274 self.local_gen_sym_counter.set(idx + 1);
1275 let mut name = String::with_capacity(prefix.len() + 6);
1278 name.push_str(prefix);
1279 name.push('.');
1280 name.push_str(&(idx as u64).to_base(ALPHANUMERIC_ONLY));
1281 name
1282 }
1283}
1284
1285impl<'ll, CX: Borrow<SCx<'ll>>> GenericCx<'ll, CX> {
1286 pub(crate) fn set_metadata<'a>(
1288 &self,
1289 val: &'a Value,
1290 kind_id: impl Into<llvm::MetadataKindId>,
1291 md: &'ll Metadata,
1292 ) {
1293 let node = self.get_metadata_value(md);
1294 llvm::LLVMSetMetadata(val, kind_id.into(), node);
1295 }
1296}
1297
1298impl HasDataLayout for CodegenCx<'_, '_> {
1299 #[inline]
1300 fn data_layout(&self) -> &TargetDataLayout {
1301 &self.tcx.data_layout
1302 }
1303}
1304
1305impl HasTargetSpec for CodegenCx<'_, '_> {
1306 #[inline]
1307 fn target_spec(&self) -> &Target {
1308 &self.tcx.sess.target
1309 }
1310}
1311
1312impl<'tcx> ty::layout::HasTyCtxt<'tcx> for CodegenCx<'_, 'tcx> {
1313 #[inline]
1314 fn tcx(&self) -> TyCtxt<'tcx> {
1315 self.tcx
1316 }
1317}
1318
1319impl<'tcx, 'll> HasTypingEnv<'tcx> for CodegenCx<'ll, 'tcx> {
1320 fn typing_env(&self) -> ty::TypingEnv<'tcx> {
1321 ty::TypingEnv::fully_monomorphized()
1322 }
1323}
1324
1325impl<'tcx> LayoutOfHelpers<'tcx> for CodegenCx<'_, 'tcx> {
1326 #[inline]
1327 fn handle_layout_err(&self, err: LayoutError<'tcx>, span: Span, ty: Ty<'tcx>) -> ! {
1328 if let LayoutError::SizeOverflow(_) | LayoutError::ReferencesError(_) = err {
1329 self.tcx.dcx().emit_fatal(Spanned { span, node: err.into_diagnostic() })
1330 } else {
1331 self.tcx.dcx().emit_fatal(ssa_errors::FailedToGetLayout { span, ty, err })
1332 }
1333 }
1334}
1335
1336impl<'tcx> FnAbiOfHelpers<'tcx> for CodegenCx<'_, 'tcx> {
1337 #[inline]
1338 fn handle_fn_abi_err(
1339 &self,
1340 err: FnAbiError<'tcx>,
1341 span: Span,
1342 fn_abi_request: FnAbiRequest<'tcx>,
1343 ) -> ! {
1344 match err {
1345 FnAbiError::Layout(LayoutError::SizeOverflow(_) | LayoutError::Cycle(_)) => {
1346 self.tcx.dcx().emit_fatal(Spanned { span, node: err });
1347 }
1348 _ => match fn_abi_request {
1349 FnAbiRequest::OfFnPtr { sig, extra_args } => {
1350 span_bug!(span, "`fn_abi_of_fn_ptr({sig}, {extra_args:?})` failed: {err:?}",);
1351 }
1352 FnAbiRequest::OfInstance { instance, extra_args } => {
1353 span_bug!(
1354 span,
1355 "`fn_abi_of_instance({instance}, {extra_args:?})` failed: {err:?}",
1356 );
1357 }
1358 },
1359 }
1360 }
1361}