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;
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::errors as ssa_errors;
12use rustc_codegen_ssa::traits::*;
13use rustc_data_structures::base_n::{ALPHANUMERIC_ONLY, ToBaseN};
14use rustc_data_structures::fx::FxHashMap;
15use rustc_data_structures::small_c_str::SmallCStr;
16use rustc_hir::def_id::DefId;
17use rustc_middle::middle::codegen_fn_attrs::PatchableFunctionEntry;
18use rustc_middle::mir::mono::CodegenUnit;
19use rustc_middle::ty::layout::{
20 FnAbiError, FnAbiOfHelpers, FnAbiRequest, HasTypingEnv, LayoutError, LayoutOfHelpers,
21};
22use rustc_middle::ty::{self, Instance, Ty, TyCtxt};
23use rustc_middle::{bug, span_bug};
24use rustc_session::Session;
25use rustc_session::config::{
26 BranchProtection, CFGuard, CFProtection, CrateType, DebugInfo, FunctionReturn, PAuthKey, PacRet,
27};
28use rustc_span::source_map::Spanned;
29use rustc_span::{DUMMY_SP, Span};
30use rustc_symbol_mangling::mangle_internal_symbol;
31use rustc_target::spec::{HasTargetSpec, RelocModel, SmallDataThresholdSupport, Target, TlsModel};
32use smallvec::SmallVec;
33
34use crate::back::write::to_llvm_code_model;
35use crate::callee::get_fn;
36use crate::common::AsCCharPtr;
37use crate::debuginfo::metadata::apply_vcall_visibility_metadata;
38use crate::llvm::Metadata;
39use crate::type_::Type;
40use crate::value::Value;
41use crate::{attributes, coverageinfo, debuginfo, llvm, llvm_util};
42
43pub(crate) struct SCx<'ll> {
48 pub llmod: &'ll llvm::Module,
49 pub llcx: &'ll llvm::Context,
50 pub isize_ty: &'ll Type,
51}
52
53impl<'ll> Borrow<SCx<'ll>> for FullCx<'ll, '_> {
54 fn borrow(&self) -> &SCx<'ll> {
55 &self.scx
56 }
57}
58
59impl<'ll, 'tcx> Deref for FullCx<'ll, 'tcx> {
60 type Target = SimpleCx<'ll>;
61
62 #[inline]
63 fn deref(&self) -> &Self::Target {
64 &self.scx
65 }
66}
67
68pub(crate) struct GenericCx<'ll, T: Borrow<SCx<'ll>>>(T, PhantomData<SCx<'ll>>);
69
70impl<'ll, T: Borrow<SCx<'ll>>> Deref for GenericCx<'ll, T> {
71 type Target = T;
72
73 #[inline]
74 fn deref(&self) -> &Self::Target {
75 &self.0
76 }
77}
78
79pub(crate) type SimpleCx<'ll> = GenericCx<'ll, SCx<'ll>>;
80
81pub(crate) type CodegenCx<'ll, 'tcx> = GenericCx<'ll, FullCx<'ll, 'tcx>>;
85
86pub(crate) struct FullCx<'ll, 'tcx> {
87 pub tcx: TyCtxt<'tcx>,
88 pub scx: SimpleCx<'ll>,
89 pub use_dll_storage_attrs: bool,
90 pub tls_model: llvm::ThreadLocalMode,
91
92 pub codegen_unit: &'tcx CodegenUnit<'tcx>,
93
94 pub instances: RefCell<FxHashMap<Instance<'tcx>, &'ll Value>>,
96 pub vtables: RefCell<FxHashMap<(Ty<'tcx>, Option<ty::ExistentialTraitRef<'tcx>>), &'ll Value>>,
98 pub const_str_cache: RefCell<FxHashMap<String, &'ll Value>>,
100
101 pub const_globals: RefCell<FxHashMap<&'ll Value, &'ll Value>>,
103
104 pub statics_to_rauw: RefCell<Vec<(&'ll Value, &'ll Value)>>,
109
110 pub used_statics: RefCell<Vec<&'ll Value>>,
113
114 pub compiler_used_statics: RefCell<Vec<&'ll Value>>,
117
118 pub type_lowering: RefCell<FxHashMap<(Ty<'tcx>, Option<VariantIdx>), &'ll Type>>,
120
121 pub scalar_lltypes: RefCell<FxHashMap<Ty<'tcx>, &'ll Type>>,
123
124 pub coverage_cx: Option<coverageinfo::CguCoverageContext<'ll, 'tcx>>,
126 pub dbg_cx: Option<debuginfo::CodegenUnitDebugContext<'ll, 'tcx>>,
127
128 eh_personality: Cell<Option<&'ll Value>>,
129 eh_catch_typeinfo: Cell<Option<&'ll Value>>,
130 pub rust_try_fn: Cell<Option<(&'ll Type, &'ll Value)>>,
131
132 intrinsics: RefCell<FxHashMap<&'static str, (&'ll Type, &'ll Value)>>,
133
134 local_gen_sym_counter: Cell<usize>,
136
137 pub renamed_statics: RefCell<FxHashMap<DefId, &'ll Value>>,
142}
143
144fn to_llvm_tls_model(tls_model: TlsModel) -> llvm::ThreadLocalMode {
145 match tls_model {
146 TlsModel::GeneralDynamic => llvm::ThreadLocalMode::GeneralDynamic,
147 TlsModel::LocalDynamic => llvm::ThreadLocalMode::LocalDynamic,
148 TlsModel::InitialExec => llvm::ThreadLocalMode::InitialExec,
149 TlsModel::LocalExec => llvm::ThreadLocalMode::LocalExec,
150 TlsModel::Emulated => llvm::ThreadLocalMode::GeneralDynamic,
151 }
152}
153
154pub(crate) unsafe fn create_module<'ll>(
155 tcx: TyCtxt<'_>,
156 llcx: &'ll llvm::Context,
157 mod_name: &str,
158) -> &'ll llvm::Module {
159 let sess = tcx.sess;
160 let mod_name = SmallCStr::new(mod_name);
161 let llmod = unsafe { llvm::LLVMModuleCreateWithNameInContext(mod_name.as_ptr(), llcx) };
162
163 let mut target_data_layout = sess.target.data_layout.to_string();
164 let llvm_version = llvm_util::get_version();
165
166 if llvm_version < (19, 0, 0) {
167 if sess.target.arch == "aarch64" || sess.target.arch.starts_with("arm64") {
168 target_data_layout = target_data_layout.replace("-Fn32", "");
172 }
173 }
174
175 if llvm_version < (19, 0, 0) {
176 if sess.target.arch == "loongarch64" {
177 target_data_layout = target_data_layout.replace("-n32:64", "-n64");
180 }
181 }
182
183 if llvm_version < (20, 0, 0) {
184 if sess.target.arch == "aarch64" || sess.target.arch.starts_with("arm64") {
185 target_data_layout =
189 target_data_layout.replace("-p270:32:32-p271:32:32-p272:64:64", "");
190 }
191 if sess.target.arch.starts_with("sparc") {
192 target_data_layout = target_data_layout.replace("-i128:128", "");
195 }
196 if sess.target.arch.starts_with("mips64") {
197 target_data_layout = target_data_layout.replace("-i128:128", "");
200 }
201 if sess.target.arch.starts_with("powerpc64") {
202 target_data_layout = target_data_layout.replace("-i128:128", "");
205 }
206 if sess.target.arch.starts_with("wasm32") || sess.target.arch.starts_with("wasm64") {
207 target_data_layout = target_data_layout.replace("-i128:128", "");
210 }
211 }
212 if llvm_version < (21, 0, 0) {
213 if sess.target.arch == "nvptx64" {
214 target_data_layout = target_data_layout.replace("e-p6:32:32-i64", "e-i64");
216 }
217 }
218
219 {
221 let tm = crate::back::write::create_informational_target_machine(tcx.sess, false);
222 unsafe {
223 llvm::LLVMRustSetDataLayoutFromTargetMachine(llmod, tm.raw());
224 }
225
226 let llvm_data_layout = unsafe { llvm::LLVMGetDataLayoutStr(llmod) };
227 let llvm_data_layout =
228 str::from_utf8(unsafe { CStr::from_ptr(llvm_data_layout) }.to_bytes())
229 .expect("got a non-UTF8 data-layout from LLVM");
230
231 if target_data_layout != llvm_data_layout {
232 tcx.dcx().emit_err(crate::errors::MismatchedDataLayout {
233 rustc_target: sess.opts.target_triple.to_string().as_str(),
234 rustc_layout: target_data_layout.as_str(),
235 llvm_target: sess.target.llvm_target.borrow(),
236 llvm_layout: llvm_data_layout,
237 });
238 }
239 }
240
241 let data_layout = SmallCStr::new(&target_data_layout);
242 unsafe {
243 llvm::LLVMSetDataLayout(llmod, data_layout.as_ptr());
244 }
245
246 let llvm_target = SmallCStr::new(&versioned_llvm_target(sess));
247 unsafe {
248 llvm::LLVMRustSetNormalizedTarget(llmod, llvm_target.as_ptr());
249 }
250
251 let reloc_model = sess.relocation_model();
252 if matches!(reloc_model, RelocModel::Pic | RelocModel::Pie) {
253 unsafe {
254 llvm::LLVMRustSetModulePICLevel(llmod);
255 }
256 if reloc_model == RelocModel::Pie
259 || tcx.crate_types().iter().all(|ty| *ty == CrateType::Executable)
260 {
261 unsafe {
262 llvm::LLVMRustSetModulePIELevel(llmod);
263 }
264 }
265 }
266
267 unsafe {
273 llvm::LLVMRustSetModuleCodeModel(llmod, to_llvm_code_model(sess.code_model()));
274 }
275
276 if !sess.needs_plt() {
279 llvm::add_module_flag_u32(llmod, llvm::ModuleFlagMergeBehavior::Warning, "RtLibUseGOT", 1);
280 }
281
282 if sess.is_sanitizer_cfi_canonical_jump_tables_enabled() && sess.is_sanitizer_cfi_enabled() {
284 llvm::add_module_flag_u32(
285 llmod,
286 llvm::ModuleFlagMergeBehavior::Override,
287 "CFI Canonical Jump Tables",
288 1,
289 );
290 }
291
292 if sess.is_sanitizer_cfi_normalize_integers_enabled() {
295 llvm::add_module_flag_u32(
296 llmod,
297 llvm::ModuleFlagMergeBehavior::Override,
298 "cfi-normalize-integers",
299 1,
300 );
301 }
302
303 if sess.is_split_lto_unit_enabled() || sess.is_sanitizer_cfi_enabled() {
306 llvm::add_module_flag_u32(
307 llmod,
308 llvm::ModuleFlagMergeBehavior::Override,
309 "EnableSplitLTOUnit",
310 1,
311 );
312 }
313
314 if sess.is_sanitizer_kcfi_enabled() {
316 llvm::add_module_flag_u32(llmod, llvm::ModuleFlagMergeBehavior::Override, "kcfi", 1);
317
318 let pfe =
321 PatchableFunctionEntry::from_config(sess.opts.unstable_opts.patchable_function_entry);
322 if pfe.prefix() > 0 {
323 llvm::add_module_flag_u32(
324 llmod,
325 llvm::ModuleFlagMergeBehavior::Override,
326 "kcfi-offset",
327 pfe.prefix().into(),
328 );
329 }
330 }
331
332 if sess.target.is_like_msvc
334 || (sess.target.options.os == "windows"
335 && sess.target.options.env == "gnu"
336 && sess.target.options.abi == "llvm")
337 {
338 match sess.opts.cg.control_flow_guard {
339 CFGuard::Disabled => {}
340 CFGuard::NoChecks => {
341 llvm::add_module_flag_u32(
343 llmod,
344 llvm::ModuleFlagMergeBehavior::Warning,
345 "cfguard",
346 1,
347 );
348 }
349 CFGuard::Checks => {
350 llvm::add_module_flag_u32(
352 llmod,
353 llvm::ModuleFlagMergeBehavior::Warning,
354 "cfguard",
355 2,
356 );
357 }
358 }
359 }
360
361 if let Some(BranchProtection { bti, pac_ret }) = sess.opts.unstable_opts.branch_protection {
362 if sess.target.arch == "aarch64" {
363 llvm::add_module_flag_u32(
364 llmod,
365 llvm::ModuleFlagMergeBehavior::Min,
366 "branch-target-enforcement",
367 bti.into(),
368 );
369 llvm::add_module_flag_u32(
370 llmod,
371 llvm::ModuleFlagMergeBehavior::Min,
372 "sign-return-address",
373 pac_ret.is_some().into(),
374 );
375 let pac_opts = pac_ret.unwrap_or(PacRet { leaf: false, pc: false, key: PAuthKey::A });
376 llvm::add_module_flag_u32(
377 llmod,
378 llvm::ModuleFlagMergeBehavior::Min,
379 "branch-protection-pauth-lr",
380 pac_opts.pc.into(),
381 );
382 llvm::add_module_flag_u32(
383 llmod,
384 llvm::ModuleFlagMergeBehavior::Min,
385 "sign-return-address-all",
386 pac_opts.leaf.into(),
387 );
388 llvm::add_module_flag_u32(
389 llmod,
390 llvm::ModuleFlagMergeBehavior::Min,
391 "sign-return-address-with-bkey",
392 u32::from(pac_opts.key == PAuthKey::B),
393 );
394 } else {
395 bug!(
396 "branch-protection used on non-AArch64 target; \
397 this should be checked in rustc_session."
398 );
399 }
400 }
401
402 if let CFProtection::Branch | CFProtection::Full = sess.opts.unstable_opts.cf_protection {
404 llvm::add_module_flag_u32(
405 llmod,
406 llvm::ModuleFlagMergeBehavior::Override,
407 "cf-protection-branch",
408 1,
409 );
410 }
411 if let CFProtection::Return | CFProtection::Full = sess.opts.unstable_opts.cf_protection {
412 llvm::add_module_flag_u32(
413 llmod,
414 llvm::ModuleFlagMergeBehavior::Override,
415 "cf-protection-return",
416 1,
417 );
418 }
419
420 if sess.opts.unstable_opts.virtual_function_elimination {
421 llvm::add_module_flag_u32(
422 llmod,
423 llvm::ModuleFlagMergeBehavior::Error,
424 "Virtual Function Elim",
425 1,
426 );
427 }
428
429 if sess.opts.unstable_opts.ehcont_guard {
431 llvm::add_module_flag_u32(llmod, llvm::ModuleFlagMergeBehavior::Warning, "ehcontguard", 1);
432 }
433
434 match sess.opts.unstable_opts.function_return {
435 FunctionReturn::Keep => {}
436 FunctionReturn::ThunkExtern => {
437 llvm::add_module_flag_u32(
438 llmod,
439 llvm::ModuleFlagMergeBehavior::Override,
440 "function_return_thunk_extern",
441 1,
442 );
443 }
444 }
445
446 match (sess.opts.unstable_opts.small_data_threshold, sess.target.small_data_threshold_support())
447 {
448 (Some(threshold), SmallDataThresholdSupport::LlvmModuleFlag(flag)) => {
451 llvm::add_module_flag_u32(
452 llmod,
453 llvm::ModuleFlagMergeBehavior::Error,
454 &flag,
455 threshold as u32,
456 );
457 }
458 _ => (),
459 };
460
461 #[allow(clippy::option_env_unwrap)]
466 let rustc_producer =
467 format!("rustc version {}", option_env!("CFG_VERSION").expect("CFG_VERSION"));
468 let name_metadata = unsafe {
469 llvm::LLVMMDStringInContext2(
470 llcx,
471 rustc_producer.as_c_char_ptr(),
472 rustc_producer.as_bytes().len(),
473 )
474 };
475 unsafe {
476 llvm::LLVMAddNamedMetadataOperand(
477 llmod,
478 c"llvm.ident".as_ptr(),
479 &llvm::LLVMMetadataAsValue(llcx, llvm::LLVMMDNodeInContext2(llcx, &name_metadata, 1)),
480 );
481 }
482
483 let llvm_abiname = &sess.target.options.llvm_abiname;
489 if matches!(sess.target.arch.as_ref(), "riscv32" | "riscv64") && !llvm_abiname.is_empty() {
490 llvm::add_module_flag_str(
491 llmod,
492 llvm::ModuleFlagMergeBehavior::Error,
493 "target-abi",
494 llvm_abiname,
495 );
496 }
497
498 for (key, value, merge_behavior) in &sess.opts.unstable_opts.llvm_module_flag {
500 let merge_behavior = match merge_behavior.as_str() {
501 "error" => llvm::ModuleFlagMergeBehavior::Error,
502 "warning" => llvm::ModuleFlagMergeBehavior::Warning,
503 "require" => llvm::ModuleFlagMergeBehavior::Require,
504 "override" => llvm::ModuleFlagMergeBehavior::Override,
505 "append" => llvm::ModuleFlagMergeBehavior::Append,
506 "appendunique" => llvm::ModuleFlagMergeBehavior::AppendUnique,
507 "max" => llvm::ModuleFlagMergeBehavior::Max,
508 "min" => llvm::ModuleFlagMergeBehavior::Min,
509 _ => unreachable!(),
511 };
512 llvm::add_module_flag_u32(llmod, merge_behavior, key, *value);
513 }
514
515 llmod
516}
517
518impl<'ll, 'tcx> CodegenCx<'ll, 'tcx> {
519 pub(crate) fn new(
520 tcx: TyCtxt<'tcx>,
521 codegen_unit: &'tcx CodegenUnit<'tcx>,
522 llvm_module: &'ll crate::ModuleLlvm,
523 ) -> Self {
524 let use_dll_storage_attrs = tcx.sess.target.is_like_windows;
577
578 let tls_model = to_llvm_tls_model(tcx.sess.tls_model());
579
580 let (llcx, llmod) = (&*llvm_module.llcx, llvm_module.llmod());
581
582 let coverage_cx =
583 tcx.sess.instrument_coverage().then(coverageinfo::CguCoverageContext::new);
584
585 let dbg_cx = if tcx.sess.opts.debuginfo != DebugInfo::None {
586 let dctx = debuginfo::CodegenUnitDebugContext::new(llmod);
587 debuginfo::metadata::build_compile_unit_di_node(
588 tcx,
589 codegen_unit.name().as_str(),
590 &dctx,
591 );
592 Some(dctx)
593 } else {
594 None
595 };
596
597 GenericCx(
598 FullCx {
599 tcx,
600 scx: SimpleCx::new(llmod, llcx, tcx.data_layout.pointer_size),
601 use_dll_storage_attrs,
602 tls_model,
603 codegen_unit,
604 instances: Default::default(),
605 vtables: Default::default(),
606 const_str_cache: Default::default(),
607 const_globals: Default::default(),
608 statics_to_rauw: RefCell::new(Vec::new()),
609 used_statics: RefCell::new(Vec::new()),
610 compiler_used_statics: RefCell::new(Vec::new()),
611 type_lowering: Default::default(),
612 scalar_lltypes: Default::default(),
613 coverage_cx,
614 dbg_cx,
615 eh_personality: Cell::new(None),
616 eh_catch_typeinfo: Cell::new(None),
617 rust_try_fn: Cell::new(None),
618 intrinsics: Default::default(),
619 local_gen_sym_counter: Cell::new(0),
620 renamed_statics: Default::default(),
621 },
622 PhantomData,
623 )
624 }
625
626 pub(crate) fn statics_to_rauw(&self) -> &RefCell<Vec<(&'ll Value, &'ll Value)>> {
627 &self.statics_to_rauw
628 }
629
630 #[inline]
632 #[track_caller]
633 pub(crate) fn coverage_cx(&self) -> &coverageinfo::CguCoverageContext<'ll, 'tcx> {
634 self.coverage_cx.as_ref().expect("only called when coverage instrumentation is enabled")
635 }
636
637 pub(crate) fn create_used_variable_impl(&self, name: &'static CStr, values: &[&'ll Value]) {
638 let array = self.const_array(self.type_ptr(), values);
639
640 let g = llvm::add_global(self.llmod, self.val_ty(array), name);
641 llvm::set_initializer(g, array);
642 llvm::set_linkage(g, llvm::Linkage::AppendingLinkage);
643 llvm::set_section(g, c"llvm.metadata");
644 }
645}
646
647impl<'ll> SimpleCx<'ll> {
648 pub(crate) fn new(
649 llmod: &'ll llvm::Module,
650 llcx: &'ll llvm::Context,
651 pointer_size: Size,
652 ) -> Self {
653 let isize_ty = llvm::Type::ix_llcx(llcx, pointer_size.bits());
654 Self(SCx { llmod, llcx, isize_ty }, PhantomData)
655 }
656}
657
658impl<'ll, CX: Borrow<SCx<'ll>>> GenericCx<'ll, CX> {
659 pub(crate) fn get_metadata_value(&self, metadata: &'ll Metadata) -> &'ll Value {
660 llvm::LLVMMetadataAsValue(self.llcx(), metadata)
661 }
662
663 pub(crate) fn get_function(&self, name: &str) -> Option<&'ll Value> {
664 let name = SmallCStr::new(name);
665 unsafe { llvm::LLVMGetNamedFunction((**self).borrow().llmod, name.as_ptr()) }
666 }
667
668 pub(crate) fn get_md_kind_id(&self, name: &str) -> llvm::MetadataKindId {
669 unsafe {
670 llvm::LLVMGetMDKindIDInContext(
671 self.llcx(),
672 name.as_ptr() as *const c_char,
673 name.len() as c_uint,
674 )
675 }
676 }
677
678 pub(crate) fn create_metadata(&self, name: String) -> Option<&'ll Metadata> {
679 Some(unsafe {
680 llvm::LLVMMDStringInContext2(self.llcx(), name.as_ptr() as *const c_char, name.len())
681 })
682 }
683}
684
685impl<'ll, 'tcx> MiscCodegenMethods<'tcx> for CodegenCx<'ll, 'tcx> {
686 fn vtables(
687 &self,
688 ) -> &RefCell<FxHashMap<(Ty<'tcx>, Option<ty::ExistentialTraitRef<'tcx>>), &'ll Value>> {
689 &self.vtables
690 }
691
692 fn apply_vcall_visibility_metadata(
693 &self,
694 ty: Ty<'tcx>,
695 poly_trait_ref: Option<ty::ExistentialTraitRef<'tcx>>,
696 vtable: &'ll Value,
697 ) {
698 apply_vcall_visibility_metadata(self, ty, poly_trait_ref, vtable);
699 }
700
701 fn get_fn(&self, instance: Instance<'tcx>) -> &'ll Value {
702 get_fn(self, instance)
703 }
704
705 fn get_fn_addr(&self, instance: Instance<'tcx>) -> &'ll Value {
706 get_fn(self, instance)
707 }
708
709 fn eh_personality(&self) -> &'ll Value {
710 if let Some(llpersonality) = self.eh_personality.get() {
731 return llpersonality;
732 }
733
734 let name = if wants_msvc_seh(self.sess()) {
735 Some("__CxxFrameHandler3")
736 } else if wants_wasm_eh(self.sess()) {
737 Some("__gxx_wasm_personality_v0")
742 } else {
743 None
744 };
745
746 let tcx = self.tcx;
747 let llfn = match tcx.lang_items().eh_personality() {
748 Some(def_id) if name.is_none() => self.get_fn_addr(ty::Instance::expect_resolve(
749 tcx,
750 self.typing_env(),
751 def_id,
752 ty::List::empty(),
753 DUMMY_SP,
754 )),
755 _ => {
756 let name = name.unwrap_or("rust_eh_personality");
757 if let Some(llfn) = self.get_declared_value(name) {
758 llfn
759 } else {
760 let fty = self.type_variadic_func(&[], self.type_i32());
761 let llfn = self.declare_cfn(name, llvm::UnnamedAddr::Global, fty);
762 let target_cpu = attributes::target_cpu_attr(self);
763 attributes::apply_to_llfn(llfn, llvm::AttributePlace::Function, &[target_cpu]);
764 llfn
765 }
766 }
767 };
768 self.eh_personality.set(Some(llfn));
769 llfn
770 }
771
772 fn sess(&self) -> &Session {
773 self.tcx.sess
774 }
775
776 fn codegen_unit(&self) -> &'tcx CodegenUnit<'tcx> {
777 self.codegen_unit
778 }
779
780 fn set_frame_pointer_type(&self, llfn: &'ll Value) {
781 if let Some(attr) = attributes::frame_pointer_type_attr(self) {
782 attributes::apply_to_llfn(llfn, llvm::AttributePlace::Function, &[attr]);
783 }
784 }
785
786 fn apply_target_cpu_attr(&self, llfn: &'ll Value) {
787 let mut attrs = SmallVec::<[_; 2]>::new();
788 attrs.push(attributes::target_cpu_attr(self));
789 attrs.extend(attributes::tune_cpu_attr(self));
790 attributes::apply_to_llfn(llfn, llvm::AttributePlace::Function, &attrs);
791 }
792
793 fn declare_c_main(&self, fn_type: Self::Type) -> Option<Self::Function> {
794 let entry_name = self.sess().target.entry_name.as_ref();
795 if self.get_declared_value(entry_name).is_none() {
796 Some(self.declare_entry_fn(
797 entry_name,
798 llvm::CallConv::from_conv(
799 self.sess().target.entry_abi,
800 self.sess().target.arch.borrow(),
801 ),
802 llvm::UnnamedAddr::Global,
803 fn_type,
804 ))
805 } else {
806 None
809 }
810 }
811}
812
813impl<'ll> CodegenCx<'ll, '_> {
814 pub(crate) fn get_intrinsic(&self, key: &str) -> (&'ll Type, &'ll Value) {
815 if let Some(v) = self.intrinsics.borrow().get(key).cloned() {
816 return v;
817 }
818
819 self.declare_intrinsic(key).unwrap_or_else(|| bug!("unknown intrinsic '{}'", key))
820 }
821
822 fn insert_intrinsic(
823 &self,
824 name: &'static str,
825 args: Option<&[&'ll llvm::Type]>,
826 ret: &'ll llvm::Type,
827 ) -> (&'ll llvm::Type, &'ll llvm::Value) {
828 let fn_ty = if let Some(args) = args {
829 self.type_func(args, ret)
830 } else {
831 self.type_variadic_func(&[], ret)
832 };
833 let f = self.declare_cfn(name, llvm::UnnamedAddr::No, fn_ty);
834 self.intrinsics.borrow_mut().insert(name, (fn_ty, f));
835 (fn_ty, f)
836 }
837
838 fn declare_intrinsic(&self, key: &str) -> Option<(&'ll Type, &'ll Value)> {
839 macro_rules! ifn {
840 ($name:expr, fn() -> $ret:expr) => (
841 if key == $name {
842 return Some(self.insert_intrinsic($name, Some(&[]), $ret));
843 }
844 );
845 ($name:expr, fn(...) -> $ret:expr) => (
846 if key == $name {
847 return Some(self.insert_intrinsic($name, None, $ret));
848 }
849 );
850 ($name:expr, fn($($arg:expr),*) -> $ret:expr) => (
851 if key == $name {
852 return Some(self.insert_intrinsic($name, Some(&[$($arg),*]), $ret));
853 }
854 );
855 }
856 macro_rules! mk_struct {
857 ($($field_ty:expr),*) => (self.type_struct( &[$($field_ty),*], false))
858 }
859
860 let ptr = self.type_ptr();
861 let void = self.type_void();
862 let i1 = self.type_i1();
863 let t_i8 = self.type_i8();
864 let t_i16 = self.type_i16();
865 let t_i32 = self.type_i32();
866 let t_i64 = self.type_i64();
867 let t_i128 = self.type_i128();
868 let t_isize = self.type_isize();
869 let t_f16 = self.type_f16();
870 let t_f32 = self.type_f32();
871 let t_f64 = self.type_f64();
872 let t_f128 = self.type_f128();
873 let t_metadata = self.type_metadata();
874 let t_token = self.type_token();
875
876 ifn!("llvm.wasm.get.exception", fn(t_token) -> ptr);
877 ifn!("llvm.wasm.get.ehselector", fn(t_token) -> t_i32);
878
879 ifn!("llvm.wasm.trunc.unsigned.i32.f32", fn(t_f32) -> t_i32);
880 ifn!("llvm.wasm.trunc.unsigned.i32.f64", fn(t_f64) -> t_i32);
881 ifn!("llvm.wasm.trunc.unsigned.i64.f32", fn(t_f32) -> t_i64);
882 ifn!("llvm.wasm.trunc.unsigned.i64.f64", fn(t_f64) -> t_i64);
883 ifn!("llvm.wasm.trunc.signed.i32.f32", fn(t_f32) -> t_i32);
884 ifn!("llvm.wasm.trunc.signed.i32.f64", fn(t_f64) -> t_i32);
885 ifn!("llvm.wasm.trunc.signed.i64.f32", fn(t_f32) -> t_i64);
886 ifn!("llvm.wasm.trunc.signed.i64.f64", fn(t_f64) -> t_i64);
887
888 ifn!("llvm.fptosi.sat.i8.f32", fn(t_f32) -> t_i8);
889 ifn!("llvm.fptosi.sat.i16.f32", fn(t_f32) -> t_i16);
890 ifn!("llvm.fptosi.sat.i32.f32", fn(t_f32) -> t_i32);
891 ifn!("llvm.fptosi.sat.i64.f32", fn(t_f32) -> t_i64);
892 ifn!("llvm.fptosi.sat.i128.f32", fn(t_f32) -> t_i128);
893 ifn!("llvm.fptosi.sat.i8.f64", fn(t_f64) -> t_i8);
894 ifn!("llvm.fptosi.sat.i16.f64", fn(t_f64) -> t_i16);
895 ifn!("llvm.fptosi.sat.i32.f64", fn(t_f64) -> t_i32);
896 ifn!("llvm.fptosi.sat.i64.f64", fn(t_f64) -> t_i64);
897 ifn!("llvm.fptosi.sat.i128.f64", fn(t_f64) -> t_i128);
898
899 ifn!("llvm.fptoui.sat.i8.f32", fn(t_f32) -> t_i8);
900 ifn!("llvm.fptoui.sat.i16.f32", fn(t_f32) -> t_i16);
901 ifn!("llvm.fptoui.sat.i32.f32", fn(t_f32) -> t_i32);
902 ifn!("llvm.fptoui.sat.i64.f32", fn(t_f32) -> t_i64);
903 ifn!("llvm.fptoui.sat.i128.f32", fn(t_f32) -> t_i128);
904 ifn!("llvm.fptoui.sat.i8.f64", fn(t_f64) -> t_i8);
905 ifn!("llvm.fptoui.sat.i16.f64", fn(t_f64) -> t_i16);
906 ifn!("llvm.fptoui.sat.i32.f64", fn(t_f64) -> t_i32);
907 ifn!("llvm.fptoui.sat.i64.f64", fn(t_f64) -> t_i64);
908 ifn!("llvm.fptoui.sat.i128.f64", fn(t_f64) -> t_i128);
909
910 ifn!("llvm.trap", fn() -> void);
911 ifn!("llvm.debugtrap", fn() -> void);
912 ifn!("llvm.frameaddress", fn(t_i32) -> ptr);
913
914 ifn!("llvm.powi.f16.i32", fn(t_f16, t_i32) -> t_f16);
915 ifn!("llvm.powi.f32.i32", fn(t_f32, t_i32) -> t_f32);
916 ifn!("llvm.powi.f64.i32", fn(t_f64, t_i32) -> t_f64);
917 ifn!("llvm.powi.f128.i32", fn(t_f128, t_i32) -> t_f128);
918
919 ifn!("llvm.pow.f16", fn(t_f16, t_f16) -> t_f16);
920 ifn!("llvm.pow.f32", fn(t_f32, t_f32) -> t_f32);
921 ifn!("llvm.pow.f64", fn(t_f64, t_f64) -> t_f64);
922 ifn!("llvm.pow.f128", fn(t_f128, t_f128) -> t_f128);
923
924 ifn!("llvm.sqrt.f16", fn(t_f16) -> t_f16);
925 ifn!("llvm.sqrt.f32", fn(t_f32) -> t_f32);
926 ifn!("llvm.sqrt.f64", fn(t_f64) -> t_f64);
927 ifn!("llvm.sqrt.f128", fn(t_f128) -> t_f128);
928
929 ifn!("llvm.sin.f16", fn(t_f16) -> t_f16);
930 ifn!("llvm.sin.f32", fn(t_f32) -> t_f32);
931 ifn!("llvm.sin.f64", fn(t_f64) -> t_f64);
932 ifn!("llvm.sin.f128", fn(t_f128) -> t_f128);
933
934 ifn!("llvm.cos.f16", fn(t_f16) -> t_f16);
935 ifn!("llvm.cos.f32", fn(t_f32) -> t_f32);
936 ifn!("llvm.cos.f64", fn(t_f64) -> t_f64);
937 ifn!("llvm.cos.f128", fn(t_f128) -> t_f128);
938
939 ifn!("llvm.exp.f16", fn(t_f16) -> t_f16);
940 ifn!("llvm.exp.f32", fn(t_f32) -> t_f32);
941 ifn!("llvm.exp.f64", fn(t_f64) -> t_f64);
942 ifn!("llvm.exp.f128", fn(t_f128) -> t_f128);
943
944 ifn!("llvm.exp2.f16", fn(t_f16) -> t_f16);
945 ifn!("llvm.exp2.f32", fn(t_f32) -> t_f32);
946 ifn!("llvm.exp2.f64", fn(t_f64) -> t_f64);
947 ifn!("llvm.exp2.f128", fn(t_f128) -> t_f128);
948
949 ifn!("llvm.log.f16", fn(t_f16) -> t_f16);
950 ifn!("llvm.log.f32", fn(t_f32) -> t_f32);
951 ifn!("llvm.log.f64", fn(t_f64) -> t_f64);
952 ifn!("llvm.log.f128", fn(t_f128) -> t_f128);
953
954 ifn!("llvm.log10.f16", fn(t_f16) -> t_f16);
955 ifn!("llvm.log10.f32", fn(t_f32) -> t_f32);
956 ifn!("llvm.log10.f64", fn(t_f64) -> t_f64);
957 ifn!("llvm.log10.f128", fn(t_f128) -> t_f128);
958
959 ifn!("llvm.log2.f16", fn(t_f16) -> t_f16);
960 ifn!("llvm.log2.f32", fn(t_f32) -> t_f32);
961 ifn!("llvm.log2.f64", fn(t_f64) -> t_f64);
962 ifn!("llvm.log2.f128", fn(t_f128) -> t_f128);
963
964 ifn!("llvm.fma.f16", fn(t_f16, t_f16, t_f16) -> t_f16);
965 ifn!("llvm.fma.f32", fn(t_f32, t_f32, t_f32) -> t_f32);
966 ifn!("llvm.fma.f64", fn(t_f64, t_f64, t_f64) -> t_f64);
967 ifn!("llvm.fma.f128", fn(t_f128, t_f128, t_f128) -> t_f128);
968
969 ifn!("llvm.fmuladd.f16", fn(t_f16, t_f16, t_f16) -> t_f16);
970 ifn!("llvm.fmuladd.f32", fn(t_f32, t_f32, t_f32) -> t_f32);
971 ifn!("llvm.fmuladd.f64", fn(t_f64, t_f64, t_f64) -> t_f64);
972 ifn!("llvm.fmuladd.f128", fn(t_f128, t_f128, t_f128) -> t_f128);
973
974 ifn!("llvm.fabs.f16", fn(t_f16) -> t_f16);
975 ifn!("llvm.fabs.f32", fn(t_f32) -> t_f32);
976 ifn!("llvm.fabs.f64", fn(t_f64) -> t_f64);
977 ifn!("llvm.fabs.f128", fn(t_f128) -> t_f128);
978
979 ifn!("llvm.minnum.f16", fn(t_f16, t_f16) -> t_f16);
980 ifn!("llvm.minnum.f32", fn(t_f32, t_f32) -> t_f32);
981 ifn!("llvm.minnum.f64", fn(t_f64, t_f64) -> t_f64);
982 ifn!("llvm.minnum.f128", fn(t_f128, t_f128) -> t_f128);
983
984 ifn!("llvm.maxnum.f16", fn(t_f16, t_f16) -> t_f16);
985 ifn!("llvm.maxnum.f32", fn(t_f32, t_f32) -> t_f32);
986 ifn!("llvm.maxnum.f64", fn(t_f64, t_f64) -> t_f64);
987 ifn!("llvm.maxnum.f128", fn(t_f128, t_f128) -> t_f128);
988
989 ifn!("llvm.floor.f16", fn(t_f16) -> t_f16);
990 ifn!("llvm.floor.f32", fn(t_f32) -> t_f32);
991 ifn!("llvm.floor.f64", fn(t_f64) -> t_f64);
992 ifn!("llvm.floor.f128", fn(t_f128) -> t_f128);
993
994 ifn!("llvm.ceil.f16", fn(t_f16) -> t_f16);
995 ifn!("llvm.ceil.f32", fn(t_f32) -> t_f32);
996 ifn!("llvm.ceil.f64", fn(t_f64) -> t_f64);
997 ifn!("llvm.ceil.f128", fn(t_f128) -> t_f128);
998
999 ifn!("llvm.trunc.f16", fn(t_f16) -> t_f16);
1000 ifn!("llvm.trunc.f32", fn(t_f32) -> t_f32);
1001 ifn!("llvm.trunc.f64", fn(t_f64) -> t_f64);
1002 ifn!("llvm.trunc.f128", fn(t_f128) -> t_f128);
1003
1004 ifn!("llvm.copysign.f16", fn(t_f16, t_f16) -> t_f16);
1005 ifn!("llvm.copysign.f32", fn(t_f32, t_f32) -> t_f32);
1006 ifn!("llvm.copysign.f64", fn(t_f64, t_f64) -> t_f64);
1007 ifn!("llvm.copysign.f128", fn(t_f128, t_f128) -> t_f128);
1008
1009 ifn!("llvm.round.f16", fn(t_f16) -> t_f16);
1010 ifn!("llvm.round.f32", fn(t_f32) -> t_f32);
1011 ifn!("llvm.round.f64", fn(t_f64) -> t_f64);
1012 ifn!("llvm.round.f128", fn(t_f128) -> t_f128);
1013
1014 ifn!("llvm.roundeven.f16", fn(t_f16) -> t_f16);
1015 ifn!("llvm.roundeven.f32", fn(t_f32) -> t_f32);
1016 ifn!("llvm.roundeven.f64", fn(t_f64) -> t_f64);
1017 ifn!("llvm.roundeven.f128", fn(t_f128) -> t_f128);
1018
1019 ifn!("llvm.rint.f16", fn(t_f16) -> t_f16);
1020 ifn!("llvm.rint.f32", fn(t_f32) -> t_f32);
1021 ifn!("llvm.rint.f64", fn(t_f64) -> t_f64);
1022 ifn!("llvm.rint.f128", fn(t_f128) -> t_f128);
1023
1024 ifn!("llvm.nearbyint.f16", fn(t_f16) -> t_f16);
1025 ifn!("llvm.nearbyint.f32", fn(t_f32) -> t_f32);
1026 ifn!("llvm.nearbyint.f64", fn(t_f64) -> t_f64);
1027 ifn!("llvm.nearbyint.f128", fn(t_f128) -> t_f128);
1028
1029 ifn!("llvm.ctpop.i8", fn(t_i8) -> t_i8);
1030 ifn!("llvm.ctpop.i16", fn(t_i16) -> t_i16);
1031 ifn!("llvm.ctpop.i32", fn(t_i32) -> t_i32);
1032 ifn!("llvm.ctpop.i64", fn(t_i64) -> t_i64);
1033 ifn!("llvm.ctpop.i128", fn(t_i128) -> t_i128);
1034
1035 ifn!("llvm.ctlz.i8", fn(t_i8, i1) -> t_i8);
1036 ifn!("llvm.ctlz.i16", fn(t_i16, i1) -> t_i16);
1037 ifn!("llvm.ctlz.i32", fn(t_i32, i1) -> t_i32);
1038 ifn!("llvm.ctlz.i64", fn(t_i64, i1) -> t_i64);
1039 ifn!("llvm.ctlz.i128", fn(t_i128, i1) -> t_i128);
1040
1041 ifn!("llvm.cttz.i8", fn(t_i8, i1) -> t_i8);
1042 ifn!("llvm.cttz.i16", fn(t_i16, i1) -> t_i16);
1043 ifn!("llvm.cttz.i32", fn(t_i32, i1) -> t_i32);
1044 ifn!("llvm.cttz.i64", fn(t_i64, i1) -> t_i64);
1045 ifn!("llvm.cttz.i128", fn(t_i128, i1) -> t_i128);
1046
1047 ifn!("llvm.bswap.i16", fn(t_i16) -> t_i16);
1048 ifn!("llvm.bswap.i32", fn(t_i32) -> t_i32);
1049 ifn!("llvm.bswap.i64", fn(t_i64) -> t_i64);
1050 ifn!("llvm.bswap.i128", fn(t_i128) -> t_i128);
1051
1052 ifn!("llvm.bitreverse.i8", fn(t_i8) -> t_i8);
1053 ifn!("llvm.bitreverse.i16", fn(t_i16) -> t_i16);
1054 ifn!("llvm.bitreverse.i32", fn(t_i32) -> t_i32);
1055 ifn!("llvm.bitreverse.i64", fn(t_i64) -> t_i64);
1056 ifn!("llvm.bitreverse.i128", fn(t_i128) -> t_i128);
1057
1058 ifn!("llvm.fshl.i8", fn(t_i8, t_i8, t_i8) -> t_i8);
1059 ifn!("llvm.fshl.i16", fn(t_i16, t_i16, t_i16) -> t_i16);
1060 ifn!("llvm.fshl.i32", fn(t_i32, t_i32, t_i32) -> t_i32);
1061 ifn!("llvm.fshl.i64", fn(t_i64, t_i64, t_i64) -> t_i64);
1062 ifn!("llvm.fshl.i128", fn(t_i128, t_i128, t_i128) -> t_i128);
1063
1064 ifn!("llvm.fshr.i8", fn(t_i8, t_i8, t_i8) -> t_i8);
1065 ifn!("llvm.fshr.i16", fn(t_i16, t_i16, t_i16) -> t_i16);
1066 ifn!("llvm.fshr.i32", fn(t_i32, t_i32, t_i32) -> t_i32);
1067 ifn!("llvm.fshr.i64", fn(t_i64, t_i64, t_i64) -> t_i64);
1068 ifn!("llvm.fshr.i128", fn(t_i128, t_i128, t_i128) -> t_i128);
1069
1070 ifn!("llvm.sadd.with.overflow.i8", fn(t_i8, t_i8) -> mk_struct! {t_i8, i1});
1071 ifn!("llvm.sadd.with.overflow.i16", fn(t_i16, t_i16) -> mk_struct! {t_i16, i1});
1072 ifn!("llvm.sadd.with.overflow.i32", fn(t_i32, t_i32) -> mk_struct! {t_i32, i1});
1073 ifn!("llvm.sadd.with.overflow.i64", fn(t_i64, t_i64) -> mk_struct! {t_i64, i1});
1074 ifn!("llvm.sadd.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct! {t_i128, i1});
1075
1076 ifn!("llvm.uadd.with.overflow.i8", fn(t_i8, t_i8) -> mk_struct! {t_i8, i1});
1077 ifn!("llvm.uadd.with.overflow.i16", fn(t_i16, t_i16) -> mk_struct! {t_i16, i1});
1078 ifn!("llvm.uadd.with.overflow.i32", fn(t_i32, t_i32) -> mk_struct! {t_i32, i1});
1079 ifn!("llvm.uadd.with.overflow.i64", fn(t_i64, t_i64) -> mk_struct! {t_i64, i1});
1080 ifn!("llvm.uadd.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct! {t_i128, i1});
1081
1082 ifn!("llvm.ssub.with.overflow.i8", fn(t_i8, t_i8) -> mk_struct! {t_i8, i1});
1083 ifn!("llvm.ssub.with.overflow.i16", fn(t_i16, t_i16) -> mk_struct! {t_i16, i1});
1084 ifn!("llvm.ssub.with.overflow.i32", fn(t_i32, t_i32) -> mk_struct! {t_i32, i1});
1085 ifn!("llvm.ssub.with.overflow.i64", fn(t_i64, t_i64) -> mk_struct! {t_i64, i1});
1086 ifn!("llvm.ssub.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct! {t_i128, i1});
1087
1088 ifn!("llvm.usub.with.overflow.i8", fn(t_i8, t_i8) -> mk_struct! {t_i8, i1});
1089 ifn!("llvm.usub.with.overflow.i16", fn(t_i16, t_i16) -> mk_struct! {t_i16, i1});
1090 ifn!("llvm.usub.with.overflow.i32", fn(t_i32, t_i32) -> mk_struct! {t_i32, i1});
1091 ifn!("llvm.usub.with.overflow.i64", fn(t_i64, t_i64) -> mk_struct! {t_i64, i1});
1092 ifn!("llvm.usub.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct! {t_i128, i1});
1093
1094 ifn!("llvm.smul.with.overflow.i8", fn(t_i8, t_i8) -> mk_struct! {t_i8, i1});
1095 ifn!("llvm.smul.with.overflow.i16", fn(t_i16, t_i16) -> mk_struct! {t_i16, i1});
1096 ifn!("llvm.smul.with.overflow.i32", fn(t_i32, t_i32) -> mk_struct! {t_i32, i1});
1097 ifn!("llvm.smul.with.overflow.i64", fn(t_i64, t_i64) -> mk_struct! {t_i64, i1});
1098 ifn!("llvm.smul.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct! {t_i128, i1});
1099
1100 ifn!("llvm.umul.with.overflow.i8", fn(t_i8, t_i8) -> mk_struct! {t_i8, i1});
1101 ifn!("llvm.umul.with.overflow.i16", fn(t_i16, t_i16) -> mk_struct! {t_i16, i1});
1102 ifn!("llvm.umul.with.overflow.i32", fn(t_i32, t_i32) -> mk_struct! {t_i32, i1});
1103 ifn!("llvm.umul.with.overflow.i64", fn(t_i64, t_i64) -> mk_struct! {t_i64, i1});
1104 ifn!("llvm.umul.with.overflow.i128", fn(t_i128, t_i128) -> mk_struct! {t_i128, i1});
1105
1106 ifn!("llvm.sadd.sat.i8", fn(t_i8, t_i8) -> t_i8);
1107 ifn!("llvm.sadd.sat.i16", fn(t_i16, t_i16) -> t_i16);
1108 ifn!("llvm.sadd.sat.i32", fn(t_i32, t_i32) -> t_i32);
1109 ifn!("llvm.sadd.sat.i64", fn(t_i64, t_i64) -> t_i64);
1110 ifn!("llvm.sadd.sat.i128", fn(t_i128, t_i128) -> t_i128);
1111
1112 ifn!("llvm.uadd.sat.i8", fn(t_i8, t_i8) -> t_i8);
1113 ifn!("llvm.uadd.sat.i16", fn(t_i16, t_i16) -> t_i16);
1114 ifn!("llvm.uadd.sat.i32", fn(t_i32, t_i32) -> t_i32);
1115 ifn!("llvm.uadd.sat.i64", fn(t_i64, t_i64) -> t_i64);
1116 ifn!("llvm.uadd.sat.i128", fn(t_i128, t_i128) -> t_i128);
1117
1118 ifn!("llvm.ssub.sat.i8", fn(t_i8, t_i8) -> t_i8);
1119 ifn!("llvm.ssub.sat.i16", fn(t_i16, t_i16) -> t_i16);
1120 ifn!("llvm.ssub.sat.i32", fn(t_i32, t_i32) -> t_i32);
1121 ifn!("llvm.ssub.sat.i64", fn(t_i64, t_i64) -> t_i64);
1122 ifn!("llvm.ssub.sat.i128", fn(t_i128, t_i128) -> t_i128);
1123
1124 ifn!("llvm.usub.sat.i8", fn(t_i8, t_i8) -> t_i8);
1125 ifn!("llvm.usub.sat.i16", fn(t_i16, t_i16) -> t_i16);
1126 ifn!("llvm.usub.sat.i32", fn(t_i32, t_i32) -> t_i32);
1127 ifn!("llvm.usub.sat.i64", fn(t_i64, t_i64) -> t_i64);
1128 ifn!("llvm.usub.sat.i128", fn(t_i128, t_i128) -> t_i128);
1129
1130 ifn!("llvm.scmp.i8.i8", fn(t_i8, t_i8) -> t_i8);
1131 ifn!("llvm.scmp.i8.i16", fn(t_i16, t_i16) -> t_i8);
1132 ifn!("llvm.scmp.i8.i32", fn(t_i32, t_i32) -> t_i8);
1133 ifn!("llvm.scmp.i8.i64", fn(t_i64, t_i64) -> t_i8);
1134 ifn!("llvm.scmp.i8.i128", fn(t_i128, t_i128) -> t_i8);
1135
1136 ifn!("llvm.ucmp.i8.i8", fn(t_i8, t_i8) -> t_i8);
1137 ifn!("llvm.ucmp.i8.i16", fn(t_i16, t_i16) -> t_i8);
1138 ifn!("llvm.ucmp.i8.i32", fn(t_i32, t_i32) -> t_i8);
1139 ifn!("llvm.ucmp.i8.i64", fn(t_i64, t_i64) -> t_i8);
1140 ifn!("llvm.ucmp.i8.i128", fn(t_i128, t_i128) -> t_i8);
1141
1142 ifn!("llvm.lifetime.start.p0i8", fn(t_i64, ptr) -> void);
1143 ifn!("llvm.lifetime.end.p0i8", fn(t_i64, ptr) -> void);
1144
1145 ifn!("llvm.is.constant.i1", fn(i1) -> i1);
1150 ifn!("llvm.is.constant.i8", fn(t_i8) -> i1);
1151 ifn!("llvm.is.constant.i16", fn(t_i16) -> i1);
1152 ifn!("llvm.is.constant.i32", fn(t_i32) -> i1);
1153 ifn!("llvm.is.constant.i64", fn(t_i64) -> i1);
1154 ifn!("llvm.is.constant.i128", fn(t_i128) -> i1);
1155 ifn!("llvm.is.constant.isize", fn(t_isize) -> i1);
1156 ifn!("llvm.is.constant.f16", fn(t_f16) -> i1);
1157 ifn!("llvm.is.constant.f32", fn(t_f32) -> i1);
1158 ifn!("llvm.is.constant.f64", fn(t_f64) -> i1);
1159 ifn!("llvm.is.constant.f128", fn(t_f128) -> i1);
1160 ifn!("llvm.is.constant.ptr", fn(ptr) -> i1);
1161
1162 ifn!("llvm.expect.i1", fn(i1, i1) -> i1);
1163 ifn!("llvm.eh.typeid.for", fn(ptr) -> t_i32);
1164 ifn!("llvm.localescape", fn(...) -> void);
1165 ifn!("llvm.localrecover", fn(ptr, ptr, t_i32) -> ptr);
1166 ifn!("llvm.x86.seh.recoverfp", fn(ptr, ptr) -> ptr);
1167
1168 ifn!("llvm.assume", fn(i1) -> void);
1169 ifn!("llvm.prefetch", fn(ptr, t_i32, t_i32, t_i32) -> void);
1170
1171 match self.sess().target.arch.as_ref() {
1175 "avr" | "msp430" => ifn!("memcmp", fn(ptr, ptr, t_isize) -> t_i16),
1176 _ => ifn!("memcmp", fn(ptr, ptr, t_isize) -> t_i32),
1177 }
1178
1179 ifn!("llvm.va_start", fn(ptr) -> void);
1181 ifn!("llvm.va_end", fn(ptr) -> void);
1182 ifn!("llvm.va_copy", fn(ptr, ptr) -> void);
1183
1184 if self.sess().instrument_coverage() {
1185 ifn!("llvm.instrprof.increment", fn(ptr, t_i64, t_i32, t_i32) -> void);
1186 if crate::llvm_util::get_version() >= (19, 0, 0) {
1187 ifn!("llvm.instrprof.mcdc.parameters", fn(ptr, t_i64, t_i32) -> void);
1188 ifn!("llvm.instrprof.mcdc.tvbitmap.update", fn(ptr, t_i64, t_i32, ptr) -> void);
1189 }
1190 }
1191
1192 ifn!("llvm.type.test", fn(ptr, t_metadata) -> i1);
1193 ifn!("llvm.type.checked.load", fn(ptr, t_i32, t_metadata) -> mk_struct! {ptr, i1});
1194
1195 if self.sess().opts.debuginfo != DebugInfo::None {
1196 ifn!("llvm.dbg.declare", fn(t_metadata, t_metadata) -> void);
1197 ifn!("llvm.dbg.value", fn(t_metadata, t_i64, t_metadata) -> void);
1198 }
1199
1200 ifn!("llvm.ptrmask", fn(ptr, t_isize) -> ptr);
1201
1202 None
1203 }
1204
1205 pub(crate) fn eh_catch_typeinfo(&self) -> &'ll Value {
1206 if let Some(eh_catch_typeinfo) = self.eh_catch_typeinfo.get() {
1207 return eh_catch_typeinfo;
1208 }
1209 let tcx = self.tcx;
1210 assert!(self.sess().target.os == "emscripten");
1211 let eh_catch_typeinfo = match tcx.lang_items().eh_catch_typeinfo() {
1212 Some(def_id) => self.get_static(def_id),
1213 _ => {
1214 let ty = self.type_struct(&[self.type_ptr(), self.type_ptr()], false);
1215 self.declare_global(&mangle_internal_symbol(self.tcx, "rust_eh_catch_typeinfo"), ty)
1216 }
1217 };
1218 self.eh_catch_typeinfo.set(Some(eh_catch_typeinfo));
1219 eh_catch_typeinfo
1220 }
1221}
1222
1223impl CodegenCx<'_, '_> {
1224 pub(crate) fn generate_local_symbol_name(&self, prefix: &str) -> String {
1227 let idx = self.local_gen_sym_counter.get();
1228 self.local_gen_sym_counter.set(idx + 1);
1229 let mut name = String::with_capacity(prefix.len() + 6);
1232 name.push_str(prefix);
1233 name.push('.');
1234 name.push_str(&(idx as u64).to_base(ALPHANUMERIC_ONLY));
1235 name
1236 }
1237}
1238
1239impl<'ll, CX: Borrow<SCx<'ll>>> GenericCx<'ll, CX> {
1240 pub(crate) fn set_metadata<'a>(
1242 &self,
1243 val: &'a Value,
1244 kind_id: impl Into<llvm::MetadataKindId>,
1245 md: &'ll Metadata,
1246 ) {
1247 let node = self.get_metadata_value(md);
1248 llvm::LLVMSetMetadata(val, kind_id.into(), node);
1249 }
1250}
1251
1252impl HasDataLayout for CodegenCx<'_, '_> {
1253 #[inline]
1254 fn data_layout(&self) -> &TargetDataLayout {
1255 &self.tcx.data_layout
1256 }
1257}
1258
1259impl HasTargetSpec for CodegenCx<'_, '_> {
1260 #[inline]
1261 fn target_spec(&self) -> &Target {
1262 &self.tcx.sess.target
1263 }
1264}
1265
1266impl<'tcx> ty::layout::HasTyCtxt<'tcx> for CodegenCx<'_, 'tcx> {
1267 #[inline]
1268 fn tcx(&self) -> TyCtxt<'tcx> {
1269 self.tcx
1270 }
1271}
1272
1273impl<'tcx, 'll> HasTypingEnv<'tcx> for CodegenCx<'ll, 'tcx> {
1274 fn typing_env(&self) -> ty::TypingEnv<'tcx> {
1275 ty::TypingEnv::fully_monomorphized()
1276 }
1277}
1278
1279impl<'tcx> LayoutOfHelpers<'tcx> for CodegenCx<'_, 'tcx> {
1280 #[inline]
1281 fn handle_layout_err(&self, err: LayoutError<'tcx>, span: Span, ty: Ty<'tcx>) -> ! {
1282 if let LayoutError::SizeOverflow(_) | LayoutError::ReferencesError(_) = err {
1283 self.tcx.dcx().emit_fatal(Spanned { span, node: err.into_diagnostic() })
1284 } else {
1285 self.tcx.dcx().emit_fatal(ssa_errors::FailedToGetLayout { span, ty, err })
1286 }
1287 }
1288}
1289
1290impl<'tcx> FnAbiOfHelpers<'tcx> for CodegenCx<'_, 'tcx> {
1291 #[inline]
1292 fn handle_fn_abi_err(
1293 &self,
1294 err: FnAbiError<'tcx>,
1295 span: Span,
1296 fn_abi_request: FnAbiRequest<'tcx>,
1297 ) -> ! {
1298 match err {
1299 FnAbiError::Layout(LayoutError::SizeOverflow(_) | LayoutError::Cycle(_)) => {
1300 self.tcx.dcx().emit_fatal(Spanned { span, node: err });
1301 }
1302 _ => match fn_abi_request {
1303 FnAbiRequest::OfFnPtr { sig, extra_args } => {
1304 span_bug!(span, "`fn_abi_of_fn_ptr({sig}, {extra_args:?})` failed: {err:?}",);
1305 }
1306 FnAbiRequest::OfInstance { instance, extra_args } => {
1307 span_bug!(
1308 span,
1309 "`fn_abi_of_instance({instance}, {extra_args:?})` failed: {err:?}",
1310 );
1311 }
1312 },
1313 }
1314 }
1315}