Auto merge of #99422 - Dylan-DPC:rollup-htjofm6, r=Dylan-DPC

Rollup of 7 pull requests

Successful merges:

 - #98839 (Add assertion that `transmute_copy`'s U is not larger than T)
 - #98998 (Remove branch target prologues from `#[naked] fn`)
 - #99198 (add missing null ptr check in alloc example)
 - #99344 (rustdoc: avoid inlining items with duplicate `(type, name)`)
 - #99351 (Use `typeck_results` to get accurate qpath res for arg mismatch error)
 - #99378 (interpret/visitor: add missing early return)
 - #99394 (Add regression test for #95230)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup

2 files changed, 7 insertions, 0 deletions

diff --git a/compiler/rustc_codegen_llvm/src/attributes.rs b/compiler/rustc_codegen_llvm/src/attributes.rs
index 32bfa5094c3..62da99ac3fb 100644
--- a/compiler/rustc_codegen_llvm/src/attributes.rs
+++ b/compiler/rustc_codegen_llvm/src/attributes.rs
@@ -299,6 +299,12 @@ pub fn from_fn_attrs<'ll, 'tcx>(
     }
     if codegen_fn_attrs.flags.contains(CodegenFnAttrFlags::NAKED) {
         to_add.push(AttributeKind::Naked.create_attr(cx.llcx));
+        // HACK(jubilee): "indirect branch tracking" works by attaching prologues to functions.
+        // And it is a module-level attribute, so the alternative is pulling naked functions into new LLVM modules.
+        // Otherwise LLVM's "naked" functions come with endbr prefixes per https://github.com/rust-lang/rust/issues/98768
+        to_add.push(AttributeKind::NoCfCheck.create_attr(cx.llcx));
+        // Need this for AArch64.
+        to_add.push(llvm::CreateAttrStringValue(cx.llcx, "branch-target-enforcement", "false"));
     }
     if codegen_fn_attrs.flags.contains(CodegenFnAttrFlags::ALLOCATOR) {
         // apply to return place instead of function (unlike all other attributes applied in this function)
diff --git a/compiler/rustc_codegen_llvm/src/llvm/ffi.rs b/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
index 0ad65e5d99b..73cedb59349 100644
--- a/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
+++ b/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
@@ -191,6 +191,7 @@ pub enum AttributeKind {
     StackProtect = 32,
     NoUndef = 33,
     SanitizeMemTag = 34,
+    NoCfCheck = 35,
 }
 
 /// LLVMIntPredicate