Auto merge of #113391 - fee1-dead-contrib:rollup-9bqlw9z, r=fee1-dead

Rollup of 9 pull requests

Successful merges:

 - #111119 (style-guide: Add chapter about formatting for nightly-only syntax)
 - #112791 (llvm ffi: Expose `CallInst->setTailCallKind`)
 - #113145 (style-guide: Document newline rules for assignment operators)
 - #113163 (Add a regression test for #112895)
 - #113332 (resolve: Use `Interned` for some interned structures)
 - #113334 (Revert the lexing of `c"…"` string literals)
 - #113350 (Fix the issue of wrong diagnosis for extern pub fn)
 - #113371 (Fix submodule handling when the current branch is named after a tag)
 - #113384 (style-guide: Clarify grammar for small patterns (not a semantic change))

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

1 files changed, 11 insertions, 0 deletions

diff --git a/compiler/rustc_codegen_llvm/src/llvm/ffi.rs b/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
index 8ee40b98e2d..3ad546b61e9 100644
--- a/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
+++ b/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
@@ -585,6 +585,16 @@ pub enum ThreadLocalMode {
     LocalExec,
 }
 
+/// LLVMRustTailCallKind
+#[derive(Copy, Clone)]
+#[repr(C)]
+pub enum TailCallKind {
+    None,
+    Tail,
+    MustTail,
+    NoTail,
+}
+
 /// LLVMRustChecksumKind
 #[derive(Copy, Clone)]
 #[repr(C)]
@@ -1196,6 +1206,7 @@ extern "C" {
         NameLen: size_t,
     ) -> Option<&Value>;
     pub fn LLVMSetTailCall(CallInst: &Value, IsTailCall: Bool);
+    pub fn LLVMRustSetTailCallKind(CallInst: &Value, TKC: TailCallKind);
 
     // Operations on attributes
     pub fn LLVMRustCreateAttrNoValue(C: &Context, attr: AttributeKind) -> &Attribute;