Merging upstream version 1.70.0+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

18 files changed, 224 insertions, 162 deletions

diff --git a/compiler/rustc_codegen_llvm/src/asm.rs b/compiler/rustc_codegen_llvm/src/asm.rs
index d9f8170a3..1a3865360 100644
--- a/compiler/rustc_codegen_llvm/src/asm.rs
+++ b/compiler/rustc_codegen_llvm/src/asm.rs
@@ -244,6 +244,9 @@ impl<'ll, 'tcx> AsmBuilderMethods<'tcx> for Builder<'_, 'll, 'tcx> {
                 InlineAsmArch::Msp430 => {
                     constraints.push("~{sr}".to_string());
                 }
+                InlineAsmArch::M68k => {
+                    constraints.push("~{ccr}".to_string());
+                }
             }
         }
         if !options.contains(InlineAsmOptions::NOMEM) {
@@ -381,7 +384,7 @@ impl<'tcx> AsmMethods<'tcx> for CodegenCx<'_, 'tcx> {
         }
 
         unsafe {
-            llvm::LLVMRustAppendModuleInlineAsm(
+            llvm::LLVMAppendModuleInlineAsm(
                 self.llmod,
                 template_str.as_ptr().cast(),
                 template_str.len(),
@@ -671,6 +674,9 @@ fn reg_to_llvm(reg: InlineAsmRegOrRegClass, layout: Option<&TyAndLayout<'_>>) ->
             InlineAsmRegClass::S390x(S390xInlineAsmRegClass::reg) => "r",
             InlineAsmRegClass::S390x(S390xInlineAsmRegClass::freg) => "f",
             InlineAsmRegClass::Msp430(Msp430InlineAsmRegClass::reg) => "r",
+            InlineAsmRegClass::M68k(M68kInlineAsmRegClass::reg) => "r",
+            InlineAsmRegClass::M68k(M68kInlineAsmRegClass::reg_addr) => "a",
+            InlineAsmRegClass::M68k(M68kInlineAsmRegClass::reg_data) => "d",
             InlineAsmRegClass::SpirV(SpirVInlineAsmRegClass::reg) => {
                 bug!("LLVM backend does not support SPIR-V")
             }
@@ -768,6 +774,7 @@ fn modifier_to_llvm(
         InlineAsmRegClass::SpirV(SpirVInlineAsmRegClass::reg) => {
             bug!("LLVM backend does not support SPIR-V")
         }
+        InlineAsmRegClass::M68k(_) => None,
         InlineAsmRegClass::Err => unreachable!(),
     }
 }
@@ -839,6 +846,9 @@ fn dummy_output_type<'ll>(cx: &CodegenCx<'ll, '_>, reg: InlineAsmRegClass) -> &'
         InlineAsmRegClass::S390x(S390xInlineAsmRegClass::reg) => cx.type_i32(),
         InlineAsmRegClass::S390x(S390xInlineAsmRegClass::freg) => cx.type_f64(),
         InlineAsmRegClass::Msp430(Msp430InlineAsmRegClass::reg) => cx.type_i16(),
+        InlineAsmRegClass::M68k(M68kInlineAsmRegClass::reg) => cx.type_i32(),
+        InlineAsmRegClass::M68k(M68kInlineAsmRegClass::reg_addr) => cx.type_i32(),
+        InlineAsmRegClass::M68k(M68kInlineAsmRegClass::reg_data) => cx.type_i32(),
         InlineAsmRegClass::SpirV(SpirVInlineAsmRegClass::reg) => {
             bug!("LLVM backend does not support SPIR-V")
         }
diff --git a/compiler/rustc_codegen_llvm/src/back/archive.rs b/compiler/rustc_codegen_llvm/src/back/archive.rs
index dd3268d77..12da21dc4 100644
--- a/compiler/rustc_codegen_llvm/src/back/archive.rs
+++ b/compiler/rustc_codegen_llvm/src/back/archive.rs
@@ -110,7 +110,7 @@ impl ArchiveBuilderBuilder for LlvmArchiveBuilderBuilder {
     fn new_archive_builder<'a>(&self, sess: &'a Session) -> Box<dyn ArchiveBuilder<'a> + 'a> {
         // FIXME use ArArchiveBuilder on most targets again once reading thin archives is
         // implemented
-        if true || sess.target.arch == "wasm32" || sess.target.arch == "wasm64" {
+        if true {
             Box::new(LlvmArchiveBuilder { sess, additions: Vec::new() })
         } else {
             Box::new(ArArchiveBuilder::new(sess, get_llvm_object_symbols))
@@ -189,6 +189,15 @@ impl ArchiveBuilderBuilder for LlvmArchiveBuilderBuilder {
                 path.push(lib_name);
                 path
             };
+            // dlltool target architecture args from:
+            // https://github.com/llvm/llvm-project-release-prs/blob/llvmorg-15.0.6/llvm/lib/ToolDrivers/llvm-dlltool/DlltoolDriver.cpp#L69
+            let (dlltool_target_arch, dlltool_target_bitness) = match sess.target.arch.as_ref() {
+                "x86_64" => ("i386:x86-64", "--64"),
+                "x86" => ("i386", "--32"),
+                "aarch64" => ("arm64", "--64"),
+                "arm" => ("arm", "--32"),
+                _ => panic!("unsupported arch {}", sess.target.arch),
+            };
             let result = std::process::Command::new(dlltool)
                 .args([
                     "-d",
@@ -197,6 +206,10 @@ impl ArchiveBuilderBuilder for LlvmArchiveBuilderBuilder {
                     lib_name,
                     "-l",
                     output_path.to_str().unwrap(),
+                    "-m",
+                    dlltool_target_arch,
+                    "-f",
+                    dlltool_target_bitness,
                     "--no-leading-underscore",
                     "--temp-prefix",
                     temp_prefix.to_str().unwrap(),
@@ -422,24 +435,22 @@ fn find_binutils_dlltool(sess: &Session) -> OsString {
         return dlltool_path.clone().into_os_string();
     }
 
-    let mut tool_name: OsString = if sess.host.arch != sess.target.arch {
-        // We are cross-compiling, so we need the tool with the prefix matching our target
-        if sess.target.arch == "x86" {
-            "i686-w64-mingw32-dlltool"
-        } else {
-            "x86_64-w64-mingw32-dlltool"
-        }
+    let tool_name: OsString = if sess.host.options.is_like_windows {
+        // If we're compiling on Windows, always use "dlltool.exe".
+        "dlltool.exe"
     } else {
-        // We are not cross-compiling, so we just want `dlltool`
-        "dlltool"
+        // On other platforms, use the architecture-specific name.
+        match sess.target.arch.as_ref() {
+            "x86_64" => "x86_64-w64-mingw32-dlltool",
+            "x86" => "i686-w64-mingw32-dlltool",
+            "aarch64" => "aarch64-w64-mingw32-dlltool",
+
+            // For non-standard architectures (e.g., aarch32) fallback to "dlltool".
+            _ => "dlltool",
+        }
     }
     .into();
 
-    if sess.host.options.is_like_windows {
-        // If we're compiling on Windows, add the .exe suffix
-        tool_name.push(".exe");
-    }
-
     // NOTE: it's not clear how useful it is to explicitly search PATH.
     for dir in env::split_paths(&env::var_os("PATH").unwrap_or_default()) {
         let full_path = dir.join(&tool_name);
diff --git a/compiler/rustc_codegen_llvm/src/back/write.rs b/compiler/rustc_codegen_llvm/src/back/write.rs
index a4ae1b01e..7136f750f 100644
--- a/compiler/rustc_codegen_llvm/src/back/write.rs
+++ b/compiler/rustc_codegen_llvm/src/back/write.rs
@@ -214,6 +214,8 @@ pub fn target_machine_factory(
 
     let path_mapping = sess.source_map().path_mapping().clone();
 
+    let force_emulated_tls = sess.target.force_emulated_tls;
+
     Arc::new(move |config: TargetMachineFactoryConfig| {
         let split_dwarf_file =
             path_mapping.map_prefix(config.split_dwarf_file.unwrap_or_default()).0;
@@ -239,6 +241,7 @@ pub fn target_machine_factory(
                 relax_elf_relocations,
                 use_init_array,
                 split_dwarf_file.as_ptr(),
+                force_emulated_tls,
             )
         };
 
@@ -901,9 +904,9 @@ unsafe fn embed_bitcode(
         // We need custom section flags, so emit module-level inline assembly.
         let section_flags = if cgcx.is_pe_coff { "n" } else { "e" };
         let asm = create_section_with_flags_asm(".llvmbc", section_flags, bitcode);
-        llvm::LLVMRustAppendModuleInlineAsm(llmod, asm.as_ptr().cast(), asm.len());
+        llvm::LLVMAppendModuleInlineAsm(llmod, asm.as_ptr().cast(), asm.len());
         let asm = create_section_with_flags_asm(".llvmcmd", section_flags, cmdline.as_bytes());
-        llvm::LLVMRustAppendModuleInlineAsm(llmod, asm.as_ptr().cast(), asm.len());
+        llvm::LLVMAppendModuleInlineAsm(llmod, asm.as_ptr().cast(), asm.len());
     }
 }
 
diff --git a/compiler/rustc_codegen_llvm/src/builder.rs b/compiler/rustc_codegen_llvm/src/builder.rs
index 0f33b9854..6819a2af0 100644
--- a/compiler/rustc_codegen_llvm/src/builder.rs
+++ b/compiler/rustc_codegen_llvm/src/builder.rs
@@ -2,7 +2,7 @@ use crate::abi::FnAbiLlvmExt;
 use crate::attributes;
 use crate::common::Funclet;
 use crate::context::CodegenCx;
-use crate::llvm::{self, AtomicOrdering, AtomicRmwBinOp, BasicBlock};
+use crate::llvm::{self, AtomicOrdering, AtomicRmwBinOp, BasicBlock, False, True};
 use crate::type_::Type;
 use crate::type_of::LayoutLlvmExt;
 use crate::value::Value;
@@ -841,7 +841,15 @@ impl<'a, 'll, 'tcx> BuilderMethods<'a, 'tcx> for Builder<'a, 'll, 'tcx> {
     }
 
     fn intcast(&mut self, val: &'ll Value, dest_ty: &'ll Type, is_signed: bool) -> &'ll Value {
-        unsafe { llvm::LLVMRustBuildIntCast(self.llbuilder, val, dest_ty, is_signed) }
+        unsafe {
+            llvm::LLVMBuildIntCast2(
+                self.llbuilder,
+                val,
+                dest_ty,
+                if is_signed { True } else { False },
+                UNNAMED,
+            )
+        }
     }
 
     fn pointercast(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value {
@@ -990,7 +998,7 @@ impl<'a, 'll, 'tcx> BuilderMethods<'a, 'tcx> for Builder<'a, 'll, 'tcx> {
 
     fn resume(&mut self, exn0: &'ll Value, exn1: &'ll Value) {
         let ty = self.type_struct(&[self.type_i8p(), self.type_i32()], false);
-        let mut exn = self.const_undef(ty);
+        let mut exn = self.const_poison(ty);
         exn = self.insert_value(exn, exn0, 0);
         exn = self.insert_value(exn, exn1, 1);
         unsafe {
@@ -1001,11 +1009,11 @@ impl<'a, 'll, 'tcx> BuilderMethods<'a, 'tcx> for Builder<'a, 'll, 'tcx> {
     fn cleanup_pad(&mut self, parent: Option<&'ll Value>, args: &[&'ll Value]) -> Funclet<'ll> {
         let name = cstr!("cleanuppad");
         let ret = unsafe {
-            llvm::LLVMRustBuildCleanupPad(
+            llvm::LLVMBuildCleanupPad(
                 self.llbuilder,
                 parent,
-                args.len() as c_uint,
                 args.as_ptr(),
+                args.len() as c_uint,
                 name.as_ptr(),
             )
         };
@@ -1014,7 +1022,7 @@ impl<'a, 'll, 'tcx> BuilderMethods<'a, 'tcx> for Builder<'a, 'll, 'tcx> {
 
     fn cleanup_ret(&mut self, funclet: &Funclet<'ll>, unwind: Option<&'ll BasicBlock>) {
         unsafe {
-            llvm::LLVMRustBuildCleanupRet(self.llbuilder, funclet.cleanuppad(), unwind)
+            llvm::LLVMBuildCleanupRet(self.llbuilder, funclet.cleanuppad(), unwind)
                 .expect("LLVM does not have support for cleanupret");
         }
     }
@@ -1022,11 +1030,11 @@ impl<'a, 'll, 'tcx> BuilderMethods<'a, 'tcx> for Builder<'a, 'll, 'tcx> {
     fn catch_pad(&mut self, parent: &'ll Value, args: &[&'ll Value]) -> Funclet<'ll> {
         let name = cstr!("catchpad");
         let ret = unsafe {
-            llvm::LLVMRustBuildCatchPad(
+            llvm::LLVMBuildCatchPad(
                 self.llbuilder,
                 parent,
-                args.len() as c_uint,
                 args.as_ptr(),
+                args.len() as c_uint,
                 name.as_ptr(),
             )
         };
@@ -1041,7 +1049,7 @@ impl<'a, 'll, 'tcx> BuilderMethods<'a, 'tcx> for Builder<'a, 'll, 'tcx> {
     ) -> &'ll Value {
         let name = cstr!("catchswitch");
         let ret = unsafe {
-            llvm::LLVMRustBuildCatchSwitch(
+            llvm::LLVMBuildCatchSwitch(
                 self.llbuilder,
                 parent,
                 unwind,
@@ -1052,7 +1060,7 @@ impl<'a, 'll, 'tcx> BuilderMethods<'a, 'tcx> for Builder<'a, 'll, 'tcx> {
         let ret = ret.expect("LLVM does not have support for catchswitch");
         for handler in handlers {
             unsafe {
-                llvm::LLVMRustAddHandler(ret, handler);
+                llvm::LLVMAddHandler(ret, handler);
             }
         }
         ret
@@ -1190,8 +1198,8 @@ impl<'a, 'll, 'tcx> BuilderMethods<'a, 'tcx> for Builder<'a, 'll, 'tcx> {
         // Set KCFI operand bundle
         let is_indirect_call = unsafe { llvm::LLVMIsAFunction(llfn).is_none() };
         let kcfi_bundle =
-            if self.tcx.sess.is_sanitizer_kcfi_enabled() && fn_abi.is_some() && is_indirect_call {
-                let kcfi_typeid = kcfi_typeid_for_fnabi(self.tcx, fn_abi.unwrap());
+            if let Some(fn_abi) = fn_abi && self.tcx.sess.is_sanitizer_kcfi_enabled() && is_indirect_call {
+                let kcfi_typeid = kcfi_typeid_for_fnabi(self.tcx, fn_abi);
                 Some(llvm::OperandBundleDef::new("kcfi", &[self.const_u32(kcfi_typeid)]))
             } else {
                 None
@@ -1376,8 +1384,7 @@ impl<'a, 'll, 'tcx> Builder<'a, 'll, 'tcx> {
     }
 
     pub fn catch_ret(&mut self, funclet: &Funclet<'ll>, unwind: &'ll BasicBlock) -> &'ll Value {
-        let ret =
-            unsafe { llvm::LLVMRustBuildCatchRet(self.llbuilder, funclet.cleanuppad(), unwind) };
+        let ret = unsafe { llvm::LLVMBuildCatchRet(self.llbuilder, funclet.cleanuppad(), unwind) };
         ret.expect("LLVM does not have support for catchret")
     }
 
diff --git a/compiler/rustc_codegen_llvm/src/common.rs b/compiler/rustc_codegen_llvm/src/common.rs
index b0a9a30ab..4f8b5abd9 100644
--- a/compiler/rustc_codegen_llvm/src/common.rs
+++ b/compiler/rustc_codegen_llvm/src/common.rs
@@ -130,6 +130,10 @@ impl<'ll, 'tcx> ConstMethods<'tcx> for CodegenCx<'ll, 'tcx> {
         unsafe { llvm::LLVMGetUndef(t) }
     }
 
+    fn const_poison(&self, t: &'ll Type) -> &'ll Value {
+        unsafe { llvm::LLVMGetPoison(t) }
+    }
+
     fn const_int(&self, t: &'ll Type, i: i64) -> &'ll Value {
         unsafe { llvm::LLVMConstInt(t, i as u64, True) }
     }
@@ -374,8 +378,7 @@ pub(crate) fn get_dllimport<'tcx>(
     name: &str,
 ) -> Option<&'tcx DllImport> {
     tcx.native_library(id)
-        .map(|lib| lib.dll_imports.iter().find(|di| di.name.as_str() == name))
-        .flatten()
+        .and_then(|lib| lib.dll_imports.iter().find(|di| di.name.as_str() == name))
 }
 
 pub(crate) fn is_mingw_gnu_toolchain(target: &Target) -> bool {
diff --git a/compiler/rustc_codegen_llvm/src/consts.rs b/compiler/rustc_codegen_llvm/src/consts.rs
index 9116e71be..940358acd 100644
--- a/compiler/rustc_codegen_llvm/src/consts.rs
+++ b/compiler/rustc_codegen_llvm/src/consts.rs
@@ -7,7 +7,6 @@ use crate::type_::Type;
 use crate::type_of::LayoutLlvmExt;
 use crate::value::Value;
 use cstr::cstr;
-use libc::c_uint;
 use rustc_codegen_ssa::traits::*;
 use rustc_hir::def_id::DefId;
 use rustc_middle::middle::codegen_fn_attrs::{CodegenFnAttrFlags, CodegenFnAttrs};
@@ -486,10 +485,10 @@ impl<'ll> StaticMethods for CodegenCx<'ll, '_> {
             // go into custom sections of the wasm executable.
             if self.tcx.sess.target.is_like_wasm {
                 if let Some(section) = attrs.link_section {
-                    let section = llvm::LLVMMDStringInContext(
+                    let section = llvm::LLVMMDStringInContext2(
                         self.llcx,
                         section.as_str().as_ptr().cast(),
-                        section.as_str().len() as c_uint,
+                        section.as_str().len(),
                     );
                     assert!(alloc.provenance().ptrs().is_empty());
 
@@ -498,17 +497,15 @@ impl<'ll> StaticMethods for CodegenCx<'ll, '_> {
                     // as part of the interpreter execution).
                     let bytes =
                         alloc.inspect_with_uninit_and_ptr_outside_interpreter(0..alloc.len());
-                    let alloc = llvm::LLVMMDStringInContext(
-                        self.llcx,
-                        bytes.as_ptr().cast(),
-                        bytes.len() as c_uint,
-                    );
+                    let alloc =
+                        llvm::LLVMMDStringInContext2(self.llcx, bytes.as_ptr().cast(), bytes.len());
                     let data = [section, alloc];
-                    let meta = llvm::LLVMMDNodeInContext(self.llcx, data.as_ptr(), 2);
+                    let meta = llvm::LLVMMDNodeInContext2(self.llcx, data.as_ptr(), data.len());
+                    let val = llvm::LLVMMetadataAsValue(self.llcx, meta);
                     llvm::LLVMAddNamedMetadataOperand(
                         self.llmod,
                         "wasm.custom_sections\0".as_ptr().cast(),
-                        meta,
+                        val,
                     );
                 }
             } else {
diff --git a/compiler/rustc_codegen_llvm/src/context.rs b/compiler/rustc_codegen_llvm/src/context.rs
index 3d29968d5..f0d729d47 100644
--- a/compiler/rustc_codegen_llvm/src/context.rs
+++ b/compiler/rustc_codegen_llvm/src/context.rs
@@ -735,9 +735,13 @@ impl<'ll> CodegenCx<'ll, '_> {
 
         ifn!("llvm.copysign.f32", fn(t_f32, t_f32) -> t_f32);
         ifn!("llvm.copysign.f64", fn(t_f64, t_f64) -> t_f64);
+
         ifn!("llvm.round.f32", fn(t_f32) -> t_f32);
         ifn!("llvm.round.f64", fn(t_f64) -> t_f64);
 
+        ifn!("llvm.roundeven.f32", fn(t_f32) -> t_f32);
+        ifn!("llvm.roundeven.f64", fn(t_f64) -> t_f64);
+
         ifn!("llvm.rint.f32", fn(t_f32) -> t_f32);
         ifn!("llvm.rint.f64", fn(t_f64) -> t_f64);
         ifn!("llvm.nearbyint.f32", fn(t_f32) -> t_f32);
diff --git a/compiler/rustc_codegen_llvm/src/debuginfo/gdb.rs b/compiler/rustc_codegen_llvm/src/debuginfo/gdb.rs
index 80fd9726f..ff2b005d7 100644
--- a/compiler/rustc_codegen_llvm/src/debuginfo/gdb.rs
+++ b/compiler/rustc_codegen_llvm/src/debuginfo/gdb.rs
@@ -5,12 +5,12 @@ use crate::llvm;
 use crate::builder::Builder;
 use crate::common::CodegenCx;
 use crate::value::Value;
+use rustc_ast::attr;
 use rustc_codegen_ssa::base::collect_debugger_visualizers_transitive;
 use rustc_codegen_ssa::traits::*;
 use rustc_hir::def_id::LOCAL_CRATE;
 use rustc_middle::bug;
 use rustc_session::config::{CrateType, DebugInfo};
-
 use rustc_span::symbol::sym;
 use rustc_span::DebuggerVisualizerType;
 
@@ -87,7 +87,7 @@ pub fn get_or_insert_gdb_debug_scripts_section_global<'ll>(cx: &CodegenCx<'ll, '
 
 pub fn needs_gdb_debug_scripts_section(cx: &CodegenCx<'_, '_>) -> bool {
     let omit_gdb_pretty_printer_section =
-        cx.tcx.sess.contains_name(cx.tcx.hir().krate_attrs(), sym::omit_gdb_pretty_printer_section);
+        attr::contains_name(cx.tcx.hir().krate_attrs(), sym::omit_gdb_pretty_printer_section);
 
     // To ensure the section `__rustc_debug_gdb_scripts_section__` will not create
     // ODR violations at link time, this section will not be emitted for rlibs since
diff --git a/compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs b/compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs
index c1b3f34e5..21a0a60b0 100644
--- a/compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs
+++ b/compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs
@@ -176,15 +176,14 @@ fn build_pointer_or_reference_di_node<'ll, 'tcx>(
 
     return_if_di_node_created_in_meantime!(cx, unique_type_id);
 
-    let (thin_pointer_size, thin_pointer_align) =
-        cx.size_and_align_of(cx.tcx.mk_imm_ptr(cx.tcx.types.unit));
+    let data_layout = &cx.tcx.data_layout;
     let ptr_type_debuginfo_name = compute_debuginfo_type_name(cx.tcx, ptr_type, true);
 
     match fat_pointer_kind(cx, pointee_type) {
         None => {
             // This is a thin pointer. Create a regular pointer type and give it the correct name.
             debug_assert_eq!(
-                (thin_pointer_size, thin_pointer_align),
+                (data_layout.pointer_size, data_layout.pointer_align.abi),
                 cx.size_and_align_of(ptr_type),
                 "ptr_type={}, pointee_type={}",
                 ptr_type,
@@ -195,8 +194,8 @@ fn build_pointer_or_reference_di_node<'ll, 'tcx>(
                 llvm::LLVMRustDIBuilderCreatePointerType(
                     DIB(cx),
                     pointee_type_di_node,
-                    thin_pointer_size.bits(),
-                    thin_pointer_align.bits() as u32,
+                    data_layout.pointer_size.bits(),
+                    data_layout.pointer_align.abi.bits() as u32,
                     0, // Ignore DWARF address space.
                     ptr_type_debuginfo_name.as_ptr().cast(),
                     ptr_type_debuginfo_name.len(),
@@ -831,24 +830,7 @@ pub fn build_compile_unit_di_node<'ll, 'tcx>(
     }
     .unwrap_or_default();
     let split_name = split_name.to_str().unwrap();
-
-    // FIXME(#60020):
-    //
-    //    This should actually be
-    //
-    //        let kind = DebugEmissionKind::from_generic(tcx.sess.opts.debuginfo);
-    //
-    //    That is, we should set LLVM's emission kind to `LineTablesOnly` if
-    //    we are compiling with "limited" debuginfo. However, some of the
-    //    existing tools relied on slightly more debuginfo being generated than
-    //    would be the case with `LineTablesOnly`, and we did not want to break
-    //    these tools in a "drive-by fix", without a good idea or plan about
-    //    what limited debuginfo should exactly look like. So for now we keep
-    //    the emission kind as `FullDebug`.
-    //
-    //    See https://github.com/rust-lang/rust/issues/60020 for details.
-    let kind = DebugEmissionKind::FullDebug;
-    assert!(tcx.sess.opts.debuginfo != DebugInfo::None);
+    let kind = DebugEmissionKind::from_generic(tcx.sess.opts.debuginfo);
 
     unsafe {
         let compile_unit_file = llvm::LLVMRustDIBuilderCreateFile(
@@ -882,8 +864,6 @@ pub fn build_compile_unit_di_node<'ll, 'tcx>(
         );
 
         if tcx.sess.opts.unstable_opts.profile {
-            let cu_desc_metadata =
-                llvm::LLVMRustMetadataAsValue(debug_context.llcontext, unit_metadata);
             let default_gcda_path = &output_filenames.with_extension("gcda");
             let gcda_path =
                 tcx.sess.opts.unstable_opts.profile_emit.as_ref().unwrap_or(default_gcda_path);
@@ -891,20 +871,17 @@ pub fn build_compile_unit_di_node<'ll, 'tcx>(
             let gcov_cu_info = [
                 path_to_mdstring(debug_context.llcontext, &output_filenames.with_extension("gcno")),
                 path_to_mdstring(debug_context.llcontext, gcda_path),
-                cu_desc_metadata,
+                unit_metadata,
             ];
-            let gcov_metadata = llvm::LLVMMDNodeInContext(
+            let gcov_metadata = llvm::LLVMMDNodeInContext2(
                 debug_context.llcontext,
                 gcov_cu_info.as_ptr(),
-                gcov_cu_info.len() as c_uint,
+                gcov_cu_info.len(),
             );
+            let val = llvm::LLVMMetadataAsValue(debug_context.llcontext, gcov_metadata);
 
             let llvm_gcov_ident = cstr!("llvm.gcov");
-            llvm::LLVMAddNamedMetadataOperand(
-                debug_context.llmod,
-                llvm_gcov_ident.as_ptr(),
-                gcov_metadata,
-            );
+            llvm::LLVMAddNamedMetadataOperand(debug_context.llmod, llvm_gcov_ident.as_ptr(), val);
         }
 
         // Insert `llvm.ident` metadata on the wasm targets since that will
@@ -925,15 +902,9 @@ pub fn build_compile_unit_di_node<'ll, 'tcx>(
         return unit_metadata;
     };
 
-    fn path_to_mdstring<'ll>(llcx: &'ll llvm::Context, path: &Path) -> &'ll Value {
+    fn path_to_mdstring<'ll>(llcx: &'ll llvm::Context, path: &Path) -> &'ll llvm::Metadata {
         let path_str = path_to_c_string(path);
-        unsafe {
-            llvm::LLVMMDStringInContext(
-                llcx,
-                path_str.as_ptr(),
-                path_str.as_bytes().len() as c_uint,
-            )
-        }
+        unsafe { llvm::LLVMMDStringInContext2(llcx, path_str.as_ptr(), path_str.as_bytes().len()) }
     }
 }
 
diff --git a/compiler/rustc_codegen_llvm/src/debuginfo/metadata/enums/mod.rs b/compiler/rustc_codegen_llvm/src/debuginfo/metadata/enums/mod.rs
index 54e850f25..55a217f59 100644
--- a/compiler/rustc_codegen_llvm/src/debuginfo/metadata/enums/mod.rs
+++ b/compiler/rustc_codegen_llvm/src/debuginfo/metadata/enums/mod.rs
@@ -3,10 +3,10 @@ use rustc_codegen_ssa::debuginfo::{
     wants_c_like_enum_debuginfo,
 };
 use rustc_hir::def::CtorKind;
-use rustc_index::vec::IndexVec;
+use rustc_index::vec::IndexSlice;
 use rustc_middle::{
     bug,
-    mir::{Field, GeneratorLayout, GeneratorSavedLocal},
+    mir::{GeneratorLayout, GeneratorSavedLocal},
     ty::{
         self,
         layout::{IntegerExt, LayoutOf, PrimitiveExt, TyAndLayout},
@@ -14,7 +14,9 @@ use rustc_middle::{
     },
 };
 use rustc_span::Symbol;
-use rustc_target::abi::{HasDataLayout, Integer, Primitive, TagEncoding, VariantIdx, Variants};
+use rustc_target::abi::{
+    FieldIdx, HasDataLayout, Integer, Primitive, TagEncoding, VariantIdx, Variants,
+};
 use std::borrow::Cow;
 
 use crate::{
@@ -272,7 +274,8 @@ fn build_enum_variant_struct_type_di_node<'ll, 'tcx>(
                 .map(|field_index| {
                     let field_name = if variant_def.ctor_kind() != Some(CtorKind::Fn) {
                         // Fields have names
-                        Cow::from(variant_def.fields[field_index].name.as_str())
+                        let field = &variant_def.fields[FieldIdx::from_usize(field_index)];
+                        Cow::from(field.name.as_str())
                     } else {
                         // Tuple-like
                         super::tuple_field_name(field_index)
@@ -320,7 +323,7 @@ pub fn build_generator_variant_struct_type_di_node<'ll, 'tcx>(
     generator_type_and_layout: TyAndLayout<'tcx>,
     generator_type_di_node: &'ll DIType,
     generator_layout: &GeneratorLayout<'tcx>,
-    state_specific_upvar_names: &IndexVec<GeneratorSavedLocal, Option<Symbol>>,
+    state_specific_upvar_names: &IndexSlice<GeneratorSavedLocal, Option<Symbol>>,
     common_upvar_names: &[String],
 ) -> &'ll DIType {
     let variant_name = GeneratorSubsts::variant_name(variant_index);
@@ -353,7 +356,7 @@ pub fn build_generator_variant_struct_type_di_node<'ll, 'tcx>(
             let state_specific_fields: SmallVec<_> = (0..variant_layout.fields.count())
                 .map(|field_index| {
                     let generator_saved_local = generator_layout.variant_fields[variant_index]
-                        [Field::from_usize(field_index)];
+                        [FieldIdx::from_usize(field_index)];
                     let field_name_maybe = state_specific_upvar_names[generator_saved_local];
                     let field_name = field_name_maybe
                         .as_ref()
diff --git a/compiler/rustc_codegen_llvm/src/debuginfo/metadata/enums/native.rs b/compiler/rustc_codegen_llvm/src/debuginfo/metadata/enums/native.rs
index 93419d27a..978141917 100644
--- a/compiler/rustc_codegen_llvm/src/debuginfo/metadata/enums/native.rs
+++ b/compiler/rustc_codegen_llvm/src/debuginfo/metadata/enums/native.rs
@@ -438,6 +438,7 @@ fn build_enum_variant_member_di_node<'ll, 'tcx>(
 ///         DW_TAG_structure_type            (type of variant 1)
 ///         DW_TAG_structure_type            (type of variant 2)
 ///         DW_TAG_structure_type            (type of variant 3)
+/// ```
 struct VariantMemberInfo<'a, 'll> {
     variant_index: VariantIdx,
     variant_name: Cow<'a, str>,
diff --git a/compiler/rustc_codegen_llvm/src/debuginfo/mod.rs b/compiler/rustc_codegen_llvm/src/debuginfo/mod.rs
index 5392534cf..d808f8c5f 100644
--- a/compiler/rustc_codegen_llvm/src/debuginfo/mod.rs
+++ b/compiler/rustc_codegen_llvm/src/debuginfo/mod.rs
@@ -209,8 +209,7 @@ impl<'ll> DebugInfoBuilderMethods for Builder<'_, 'll, '_> {
 
     fn set_dbg_loc(&mut self, dbg_loc: &'ll DILocation) {
         unsafe {
-            let dbg_loc_as_llval = llvm::LLVMRustMetadataAsValue(self.cx().llcx, dbg_loc);
-            llvm::LLVMSetCurrentDebugLocation(self.llbuilder, dbg_loc_as_llval);
+            llvm::LLVMSetCurrentDebugLocation2(self.llbuilder, dbg_loc);
         }
     }
 
@@ -322,7 +321,7 @@ impl<'ll, 'tcx> DebugInfoMethods<'tcx> for CodegenCx<'ll, 'tcx> {
         let tcx = self.tcx;
 
         let def_id = instance.def_id();
-        let containing_scope = get_containing_scope(self, instance);
+        let (containing_scope, is_method) = get_containing_scope(self, instance);
         let span = tcx.def_span(def_id);
         let loc = self.lookup_debug_loc(span.lo());
         let file_metadata = file_metadata(self, &loc.file);
@@ -378,8 +377,29 @@ impl<'ll, 'tcx> DebugInfoMethods<'tcx> for CodegenCx<'ll, 'tcx> {
             }
         }
 
-        unsafe {
-            return llvm::LLVMRustDIBuilderCreateFunction(
+        // When we're adding a method to a type DIE, we only want a DW_AT_declaration there, because
+        // LLVM LTO can't unify type definitions when a child DIE is a full subprogram definition.
+        // When we use this `decl` below, the subprogram definition gets created at the CU level
+        // with a DW_AT_specification pointing back to the type's declaration.
+        let decl = is_method.then(|| unsafe {
+            llvm::LLVMRustDIBuilderCreateMethod(
+                DIB(self),
+                containing_scope,
+                name.as_ptr().cast(),
+                name.len(),
+                linkage_name.as_ptr().cast(),
+                linkage_name.len(),
+                file_metadata,
+                loc.line,
+                function_type_metadata,
+                flags,
+                spflags & !DISPFlags::SPFlagDefinition,
+                template_parameters,
+            )
+        });
+
+        return unsafe {
+            llvm::LLVMRustDIBuilderCreateFunction(
                 DIB(self),
                 containing_scope,
                 name.as_ptr().cast(),
@@ -394,15 +414,15 @@ impl<'ll, 'tcx> DebugInfoMethods<'tcx> for CodegenCx<'ll, 'tcx> {
                 spflags,
                 maybe_definition_llfn,
                 template_parameters,
-                None,
-            );
-        }
+                decl,
+            )
+        };
 
         fn get_function_signature<'ll, 'tcx>(
             cx: &CodegenCx<'ll, 'tcx>,
             fn_abi: &FnAbi<'tcx, Ty<'tcx>>,
         ) -> &'ll DIArray {
-            if cx.sess().opts.debuginfo == DebugInfo::Limited {
+            if cx.sess().opts.debuginfo != DebugInfo::Full {
                 return create_DIArray(DIB(cx), &[]);
             }
 
@@ -495,14 +515,16 @@ impl<'ll, 'tcx> DebugInfoMethods<'tcx> for CodegenCx<'ll, 'tcx> {
             names
         }
 
+        /// Returns a scope, plus `true` if that's a type scope for "class" methods,
+        /// otherwise `false` for plain namespace scopes.
         fn get_containing_scope<'ll, 'tcx>(
             cx: &CodegenCx<'ll, 'tcx>,
             instance: Instance<'tcx>,
-        ) -> &'ll DIScope {
+        ) -> (&'ll DIScope, bool) {
             // First, let's see if this is a method within an inherent impl. Because
             // if yes, we want to make the result subroutine DIE a child of the
             // subroutine's self-type.
-            let self_type = cx.tcx.impl_of_method(instance.def_id()).and_then(|impl_def_id| {
+            if let Some(impl_def_id) = cx.tcx.impl_of_method(instance.def_id()) {
                 // If the method does *not* belong to a trait, proceed
                 if cx.tcx.trait_id_of_impl(impl_def_id).is_none() {
                     let impl_self_ty = cx.tcx.subst_and_normalize_erasing_regions(
@@ -513,39 +535,34 @@ impl<'ll, 'tcx> DebugInfoMethods<'tcx> for CodegenCx<'ll, 'tcx> {
 
                     // Only "class" methods are generally understood by LLVM,
                     // so avoid methods on other types (e.g., `<*mut T>::null`).
-                    match impl_self_ty.kind() {
-                        ty::Adt(def, ..) if !def.is_box() => {
-                            // Again, only create type information if full debuginfo is enabled
-                            if cx.sess().opts.debuginfo == DebugInfo::Full
-                                && !impl_self_ty.needs_subst()
-                            {
-                                Some(type_di_node(cx, impl_self_ty))
-                            } else {
-                                Some(namespace::item_namespace(cx, def.did()))
-                            }
+                    if let ty::Adt(def, ..) = impl_self_ty.kind() && !def.is_box() {
+                        // Again, only create type information if full debuginfo is enabled
+                        if cx.sess().opts.debuginfo == DebugInfo::Full
+                            && !impl_self_ty.needs_subst()
+                        {
+                            return (type_di_node(cx, impl_self_ty), true);
+                        } else {
+                            return (namespace::item_namespace(cx, def.did()), false);
                         }
-                        _ => None,
                     }
                 } else {
                     // For trait method impls we still use the "parallel namespace"
                     // strategy
-                    None
                 }
-            });
+            }
 
-            self_type.unwrap_or_else(|| {
-                namespace::item_namespace(
-                    cx,
-                    DefId {
-                        krate: instance.def_id().krate,
-                        index: cx
-                            .tcx
-                            .def_key(instance.def_id())
-                            .parent
-                            .expect("get_containing_scope: missing parent?"),
-                    },
-                )
-            })
+            let scope = namespace::item_namespace(
+                cx,
+                DefId {
+                    krate: instance.def_id().krate,
+                    index: cx
+                        .tcx
+                        .def_key(instance.def_id())
+                        .parent
+                        .expect("get_containing_scope: missing parent?"),
+                },
+            );
+            (scope, false)
         }
     }
 
diff --git a/compiler/rustc_codegen_llvm/src/debuginfo/utils.rs b/compiler/rustc_codegen_llvm/src/debuginfo/utils.rs
index 5cd0e1cb6..6bcd3e5bf 100644
--- a/compiler/rustc_codegen_llvm/src/debuginfo/utils.rs
+++ b/compiler/rustc_codegen_llvm/src/debuginfo/utils.rs
@@ -5,7 +5,7 @@ use super::CodegenUnitDebugContext;
 
 use rustc_hir::def_id::DefId;
 use rustc_middle::ty::layout::{HasParamEnv, LayoutOf};
-use rustc_middle::ty::{self, DefIdTree, Ty};
+use rustc_middle::ty::{self, Ty};
 use trace;
 
 use crate::common::CodegenCx;
diff --git a/compiler/rustc_codegen_llvm/src/intrinsic.rs b/compiler/rustc_codegen_llvm/src/intrinsic.rs
index 39afb4af6..012e25884 100644
--- a/compiler/rustc_codegen_llvm/src/intrinsic.rs
+++ b/compiler/rustc_codegen_llvm/src/intrinsic.rs
@@ -71,6 +71,8 @@ fn get_simple_intrinsic<'ll>(
         sym::roundf32 => "llvm.round.f32",
         sym::roundf64 => "llvm.round.f64",
         sym::ptr_mask => "llvm.ptrmask",
+        sym::roundevenf32 => "llvm.roundeven.f32",
+        sym::roundevenf64 => "llvm.roundeven.f64",
         _ => return None,
     };
     Some(cx.get_intrinsic(llvm_name))
@@ -376,7 +378,7 @@ impl<'ll, 'tcx> IntrinsicCallMethods<'tcx> for Builder<'_, 'll, 'tcx> {
                 }
             }
 
-            _ => bug!("unknown intrinsic '{}'", name),
+            _ => bug!("unknown intrinsic '{}' -- should it have been lowered earlier?", name),
         };
 
         if !fn_abi.ret.is_ignore() {
diff --git a/compiler/rustc_codegen_llvm/src/lib.rs b/compiler/rustc_codegen_llvm/src/lib.rs
index c41e74c51..3f77ea77e 100644
--- a/compiler/rustc_codegen_llvm/src/lib.rs
+++ b/compiler/rustc_codegen_llvm/src/lib.rs
@@ -10,7 +10,6 @@
 #![feature(iter_intersperse)]
 #![feature(let_chains)]
 #![feature(never_type)]
-#![feature(once_cell)]
 #![recursion_limit = "256"]
 #![allow(rustc::potential_query_instability)]
 #![deny(rustc::untranslatable_diagnostic)]
@@ -84,7 +83,7 @@ mod type_of;
 mod va_arg;
 mod value;
 
-fluent_messages! { "../locales/en-US.ftl" }
+fluent_messages! { "../messages.ftl" }
 
 #[derive(Clone)]
 pub struct LlvmCodegenBackend(());
@@ -361,12 +360,12 @@ impl CodegenBackend for LlvmCodegenBackend {
             .expect("Expected LlvmCodegenBackend's OngoingCodegen, found Box<Any>")
             .join(sess);
 
-        sess.time("llvm_dump_timing_file", || {
-            if sess.opts.unstable_opts.llvm_time_trace {
+        if sess.opts.unstable_opts.llvm_time_trace {
+            sess.time("llvm_dump_timing_file", || {
                 let file_name = outputs.with_extension("llvm_timings.json");
                 llvm_util::time_trace_profiler_finish(&file_name);
-            }
-        });
+            });
+        }
 
         Ok((codegen_results, work_products))
     }
diff --git a/compiler/rustc_codegen_llvm/src/llvm/ffi.rs b/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
index 253c2ca7c..05bbdbb74 100644
--- a/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
+++ b/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
@@ -641,9 +641,6 @@ pub struct Builder<'a>(InvariantOpaque<'a>);
 #[repr(C)]
 pub struct PassManager<'a>(InvariantOpaque<'a>);
 extern "C" {
-    pub type PassManagerBuilder;
-}
-extern "C" {
     pub type Pass;
 }
 extern "C" {
@@ -949,15 +946,27 @@ pub mod debuginfo {
         NoDebug,
         FullDebug,
         LineTablesOnly,
+        DebugDirectivesOnly,
     }
 
     impl DebugEmissionKind {
         pub fn from_generic(kind: rustc_session::config::DebugInfo) -> Self {
+            // We should be setting LLVM's emission kind to `LineTablesOnly` if
+            // we are compiling with "limited" debuginfo. However, some of the
+            // existing tools relied on slightly more debuginfo being generated than
+            // would be the case with `LineTablesOnly`, and we did not want to break
+            // these tools in a "drive-by fix", without a good idea or plan about
+            // what limited debuginfo should exactly look like. So for now we are
+            // instead adding a new debuginfo option "line-tables-only" so as to
+            // not break anything and to allow users to have 'limited' debug info.
+            //
+            // See https://github.com/rust-lang/rust/issues/60020 for details.
             use rustc_session::config::DebugInfo;
             match kind {
                 DebugInfo::None => DebugEmissionKind::NoDebug,
-                DebugInfo::Limited => DebugEmissionKind::LineTablesOnly,
-                DebugInfo::Full => DebugEmissionKind::FullDebug,
+                DebugInfo::LineDirectivesOnly => DebugEmissionKind::DebugDirectivesOnly,
+                DebugInfo::LineTablesOnly => DebugEmissionKind::LineTablesOnly,
+                DebugInfo::Limited | DebugInfo::Full => DebugEmissionKind::FullDebug,
             }
         }
     }
@@ -1009,7 +1018,7 @@ extern "C" {
     pub fn LLVMSetDataLayout(M: &Module, Triple: *const c_char);
 
     /// See Module::setModuleInlineAsm.
-    pub fn LLVMRustAppendModuleInlineAsm(M: &Module, Asm: *const c_char, AsmLen: size_t);
+    pub fn LLVMAppendModuleInlineAsm(M: &Module, Asm: *const c_char, Len: size_t);
 
     /// See llvm::LLVMTypeKind::getTypeID.
     pub fn LLVMRustGetTypeKind(Ty: &Type) -> TypeKind;
@@ -1056,7 +1065,7 @@ extern "C" {
 
     // Operations on other types
     pub fn LLVMVoidTypeInContext(C: &Context) -> &Type;
-    pub fn LLVMRustMetadataTypeInContext(C: &Context) -> &Type;
+    pub fn LLVMMetadataTypeInContext(C: &Context) -> &Type;
 
     // Operations on all values
     pub fn LLVMTypeOf(Val: &Value) -> &Type;
@@ -1072,9 +1081,15 @@ extern "C" {
     // Operations on constants of any type
     pub fn LLVMConstNull(Ty: &Type) -> &Value;
     pub fn LLVMGetUndef(Ty: &Type) -> &Value;
+    pub fn LLVMGetPoison(Ty: &Type) -> &Value;
 
     // Operations on metadata
+    // FIXME: deprecated, replace with LLVMMDStringInContext2
     pub fn LLVMMDStringInContext(C: &Context, Str: *const c_char, SLen: c_uint) -> &Value;
+
+    pub fn LLVMMDStringInContext2(C: &Context, Str: *const c_char, SLen: size_t) -> &Metadata;
+
+    // FIXME: deprecated, replace with LLVMMDNodeInContext2
     pub fn LLVMMDNodeInContext<'a>(
         C: &'a Context,
         Vals: *const &'a Value,
@@ -1113,6 +1128,8 @@ extern "C" {
         Packed: Bool,
     ) -> &'a Value;
 
+    // FIXME: replace with LLVMConstArray2 when bumped minimal version to llvm-17
+    // https://github.com/llvm/llvm-project/commit/35276f16e5a2cae0dfb49c0fbf874d4d2f177acc
     pub fn LLVMConstArray<'a>(
         ElementTy: &'a Type,
         ConstantVals: *const &'a Value,
@@ -1252,7 +1269,7 @@ extern "C" {
     pub fn LLVMDisposeBuilder<'a>(Builder: &'a mut Builder<'a>);
 
     // Metadata
-    pub fn LLVMSetCurrentDebugLocation<'a>(Builder: &Builder<'a>, L: &'a Value);
+    pub fn LLVMSetCurrentDebugLocation2<'a>(Builder: &Builder<'a>, Loc: &'a Metadata);
 
     // Terminators
     pub fn LLVMBuildRetVoid<'a>(B: &Builder<'a>) -> &'a Value;
@@ -1292,38 +1309,38 @@ extern "C" {
     pub fn LLVMBuildResume<'a>(B: &Builder<'a>, Exn: &'a Value) -> &'a Value;
     pub fn LLVMBuildUnreachable<'a>(B: &Builder<'a>) -> &'a Value;
 
-    pub fn LLVMRustBuildCleanupPad<'a>(
+    pub fn LLVMBuildCleanupPad<'a>(
         B: &Builder<'a>,
         ParentPad: Option<&'a Value>,
-        ArgCnt: c_uint,
         Args: *const &'a Value,
+        NumArgs: c_uint,
         Name: *const c_char,
     ) -> Option<&'a Value>;
-    pub fn LLVMRustBuildCleanupRet<'a>(
+    pub fn LLVMBuildCleanupRet<'a>(
         B: &Builder<'a>,
         CleanupPad: &'a Value,
-        UnwindBB: Option<&'a BasicBlock>,
+        BB: Option<&'a BasicBlock>,
     ) -> Option<&'a Value>;
-    pub fn LLVMRustBuildCatchPad<'a>(
+    pub fn LLVMBuildCatchPad<'a>(
         B: &Builder<'a>,
         ParentPad: &'a Value,
-        ArgCnt: c_uint,
         Args: *const &'a Value,
+        NumArgs: c_uint,
         Name: *const c_char,
     ) -> Option<&'a Value>;
-    pub fn LLVMRustBuildCatchRet<'a>(
+    pub fn LLVMBuildCatchRet<'a>(
         B: &Builder<'a>,
-        Pad: &'a Value,
+        CatchPad: &'a Value,
         BB: &'a BasicBlock,
     ) -> Option<&'a Value>;
-    pub fn LLVMRustBuildCatchSwitch<'a>(
+    pub fn LLVMBuildCatchSwitch<'a>(
         Builder: &Builder<'a>,
         ParentPad: Option<&'a Value>,
-        BB: Option<&'a BasicBlock>,
+        UnwindBB: Option<&'a BasicBlock>,
         NumHandlers: c_uint,
         Name: *const c_char,
     ) -> Option<&'a Value>;
-    pub fn LLVMRustAddHandler<'a>(CatchSwitch: &'a Value, Handler: &'a BasicBlock);
+    pub fn LLVMAddHandler<'a>(CatchSwitch: &'a Value, Dest: &'a BasicBlock);
     pub fn LLVMSetPersonalityFn<'a>(Func: &'a Value, Pers: &'a Value);
 
     // Add a case to the switch instruction
@@ -1617,11 +1634,12 @@ extern "C" {
         DestTy: &'a Type,
         Name: *const c_char,
     ) -> &'a Value;
-    pub fn LLVMRustBuildIntCast<'a>(
+    pub fn LLVMBuildIntCast2<'a>(
         B: &Builder<'a>,
         Val: &'a Value,
         DestTy: &'a Type,
-        IsSigned: bool,
+        IsSigned: Bool,
+        Name: *const c_char,
     ) -> &'a Value;
 
     // Comparisons
@@ -1910,7 +1928,7 @@ extern "C" {
     );
     pub fn LLVMRustHasModuleFlag(M: &Module, name: *const c_char, len: size_t) -> bool;
 
-    pub fn LLVMRustMetadataAsValue<'a>(C: &'a Context, MD: &'a Metadata) -> &'a Value;
+    pub fn LLVMMetadataAsValue<'a>(C: &'a Context, MD: &'a Metadata) -> &'a Value;
 
     pub fn LLVMRustDIBuilderCreate(M: &Module) -> &mut DIBuilder<'_>;
 
@@ -1968,6 +1986,21 @@ extern "C" {
         Decl: Option<&'a DIDescriptor>,
     ) -> &'a DISubprogram;
 
+    pub fn LLVMRustDIBuilderCreateMethod<'a>(
+        Builder: &DIBuilder<'a>,
+        Scope: &'a DIDescriptor,
+        Name: *const c_char,
+        NameLen: size_t,
+        LinkageName: *const c_char,
+        LinkageNameLen: size_t,
+        File: &'a DIFile,
+        LineNo: c_uint,
+        Ty: &'a DIType,
+        Flags: DIFlags,
+        SPFlags: DISPFlags,
+        TParam: &'a DIArray,
+    ) -> &'a DISubprogram;
+
     pub fn LLVMRustDIBuilderCreateBasicType<'a>(
         Builder: &DIBuilder<'a>,
         Name: *const c_char,
@@ -2259,6 +2292,7 @@ extern "C" {
         RelaxELFRelocations: bool,
         UseInitArray: bool,
         SplitDwarfFile: *const c_char,
+        ForceEmulatedTls: bool,
     ) -> Option<&'static mut TargetMachine>;
     pub fn LLVMRustDisposeTargetMachine(T: &'static mut TargetMachine);
     pub fn LLVMRustAddLibraryInfo<'a>(
diff --git a/compiler/rustc_codegen_llvm/src/llvm_util.rs b/compiler/rustc_codegen_llvm/src/llvm_util.rs
index ba58a2e68..46692fd5e 100644
--- a/compiler/rustc_codegen_llvm/src/llvm_util.rs
+++ b/compiler/rustc_codegen_llvm/src/llvm_util.rs
@@ -424,7 +424,7 @@ pub(crate) fn global_llvm_features(sess: &Session, diagnostics: bool) -> Vec<Str
         .filter_map(|s| {
             let enable_disable = match s.chars().next() {
                 None => return None,
-                Some(c @ '+' | c @ '-') => c,
+                Some(c @ ('+' | '-')) => c,
                 Some(_) => {
                     if diagnostics {
                         sess.emit_warning(UnknownCTargetFeaturePrefix { feature: s });
diff --git a/compiler/rustc_codegen_llvm/src/type_.rs b/compiler/rustc_codegen_llvm/src/type_.rs
index ff111d96f..bef4647f2 100644
--- a/compiler/rustc_codegen_llvm/src/type_.rs
+++ b/compiler/rustc_codegen_llvm/src/type_.rs
@@ -53,7 +53,7 @@ impl<'ll> CodegenCx<'ll, '_> {
     }
 
     pub(crate) fn type_metadata(&self) -> &'ll Type {
-        unsafe { llvm::LLVMRustMetadataTypeInContext(self.llcx) }
+        unsafe { llvm::LLVMMetadataTypeInContext(self.llcx) }
     }
 
     ///x Creates an integer type with the given number of bits, e.g., i24