6 files changed, 34 insertions, 3 deletions
diff --git a/compiler/rustc_codegen_llvm/src/back/lto.rs b/compiler/rustc_codegen_llvm/src/back/lto.rs
index abc33a04598..97444f1a5bd 100644
--- a/compiler/rustc_codegen_llvm/src/back/lto.rs
+++ b/compiler/rustc_codegen_llvm/src/back/lto.rs
@@ -816,6 +816,9 @@ impl ThinLTOKeysMap {
         use std::io::Write;
         let file = File::create(path)?;
         let mut writer = io::BufWriter::new(file);
+        // The entries are loaded back into a hash map in `load_from_file()`, so
+        // the order in which we write them to file here does not matter.
+        #[allow(rustc::potential_query_instability)]
         for (module, key) in &self.keys {
             writeln!(writer, "{module} {key}")?;
         }
diff --git a/compiler/rustc_codegen_llvm/src/coverageinfo/mapgen.rs b/compiler/rustc_codegen_llvm/src/coverageinfo/mapgen.rs
index 51df14df644..33bfde03a31 100644
--- a/compiler/rustc_codegen_llvm/src/coverageinfo/mapgen.rs
+++ b/compiler/rustc_codegen_llvm/src/coverageinfo/mapgen.rs
@@ -58,6 +58,11 @@ pub fn finalize(cx: &CodegenCx<'_, '_>) {
         return;
     }
 
+    // The entries of the map are only used to get a list of all files with
+    // coverage info. In the end the list of files is passed into
+    // `GlobalFileTable::new()` which internally do `.sort_unstable_by()`, so
+    // the iteration order here does not matter.
+    #[allow(rustc::potential_query_instability)]
     let function_coverage_entries = function_coverage_map
         .into_iter()
         .map(|(instance, function_coverage)| (instance, function_coverage.into_finished()))
diff --git a/compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs b/compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs
index 98563673c30..acd5a1ff5c6 100644
--- a/compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs
+++ b/compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs
@@ -17,6 +17,7 @@ use crate::debuginfo::utils::FatPtrKind;
 use crate::llvm;
 use crate::llvm::debuginfo::{
     DIDescriptor, DIFile, DIFlags, DILexicalBlock, DIScope, DIType, DebugEmissionKind,
+    DebugNameTableKind,
 };
 use crate::value::Value;
 
@@ -38,6 +39,7 @@ use rustc_span::FileName;
 use rustc_span::{FileNameDisplayPreference, SourceFile};
 use rustc_symbol_mangling::typeid_for_trait_ref;
 use rustc_target::abi::{Align, Size};
+use rustc_target::spec::DebuginfoKind;
 use smallvec::smallvec;
 
 use libc::{c_char, c_longlong, c_uint};
@@ -878,6 +880,17 @@ pub fn build_compile_unit_di_node<'ll, 'tcx>(
     let split_name = split_name.to_str().unwrap();
     let kind = DebugEmissionKind::from_generic(tcx.sess.opts.debuginfo);
 
+    let dwarf_version =
+        tcx.sess.opts.unstable_opts.dwarf_version.unwrap_or(tcx.sess.target.default_dwarf_version);
+    let is_dwarf_kind =
+        matches!(tcx.sess.target.debuginfo_kind, DebuginfoKind::Dwarf | DebuginfoKind::DwarfDsym);
+    // Don't emit `.debug_pubnames` and `.debug_pubtypes` on DWARFv4 or lower.
+    let debug_name_table_kind = if is_dwarf_kind && dwarf_version <= 4 {
+        DebugNameTableKind::None
+    } else {
+        DebugNameTableKind::Default
+    };
+
     unsafe {
         let compile_unit_file = llvm::LLVMRustDIBuilderCreateFile(
             debug_context.builder,
@@ -907,6 +920,7 @@ pub fn build_compile_unit_di_node<'ll, 'tcx>(
             kind,
             0,
             tcx.sess.opts.unstable_opts.split_dwarf_inlining,
+            debug_name_table_kind,
         );
 
         if tcx.sess.opts.unstable_opts.profile {
diff --git a/compiler/rustc_codegen_llvm/src/intrinsic.rs b/compiler/rustc_codegen_llvm/src/intrinsic.rs
index 23b424f25ba..58e68a64907 100644
--- a/compiler/rustc_codegen_llvm/src/intrinsic.rs
+++ b/compiler/rustc_codegen_llvm/src/intrinsic.rs
@@ -1568,7 +1568,7 @@ fn generic_simd_intrinsic<'ll, 'tcx>(
 
         // Alignment of T, must be a constant integer value:
         let alignment_ty = bx.type_i32();
-        let alignment = bx.const_i32(bx.align_of(values_ty).bytes() as i32);
+        let alignment = bx.const_i32(bx.align_of(values_elem).bytes() as i32);
 
         // Truncate the mask vector to a vector of i1s:
         let (mask, mask_ty) = {
diff --git a/compiler/rustc_codegen_llvm/src/lib.rs b/compiler/rustc_codegen_llvm/src/lib.rs
index 33b19ab362a..116108ae5a9 100644
--- a/compiler/rustc_codegen_llvm/src/lib.rs
+++ b/compiler/rustc_codegen_llvm/src/lib.rs
@@ -17,7 +17,6 @@
 #![feature(never_type)]
 #![feature(impl_trait_in_assoc_type)]
 #![recursion_limit = "256"]
-#![allow(rustc::potential_query_instability)]
 #![deny(rustc::untranslatable_diagnostic)]
 #![deny(rustc::diagnostic_outside_of_impl)]
 
diff --git a/compiler/rustc_codegen_llvm/src/llvm/ffi.rs b/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
index 432cfe203c8..81702baa8c0 100644
--- a/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
+++ b/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
@@ -5,7 +5,7 @@ use super::debuginfo::{
     DIArray, DIBasicType, DIBuilder, DICompositeType, DIDerivedType, DIDescriptor, DIEnumerator,
     DIFile, DIFlags, DIGlobalVariableExpression, DILexicalBlock, DILocation, DINameSpace,
     DISPFlags, DIScope, DISubprogram, DISubrange, DITemplateTypeParameter, DIType, DIVariable,
-    DebugEmissionKind,
+    DebugEmissionKind, DebugNameTableKind,
 };
 
 use libc::{c_char, c_int, c_uint, size_t};
@@ -794,6 +794,15 @@ pub mod debuginfo {
             }
         }
     }
+
+    /// LLVMRustDebugNameTableKind
+    #[derive(Clone, Copy)]
+    #[repr(C)]
+    pub enum DebugNameTableKind {
+        Default,
+        Gnu,
+        None,
+    }
 }
 
 use bitflags::bitflags;
@@ -1812,6 +1821,7 @@ extern "C" {
         kind: DebugEmissionKind,
         DWOId: u64,
         SplitDebugInlining: bool,
+        DebugNameTableKind: DebugNameTableKind,
     ) -> &'a DIDescriptor;
 
     pub fn LLVMRustDIBuilderCreateFile<'a>(