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Use LLVMSetTailCallKind

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This commit is contained in:
Zalathar
2025-08-14 22:34:35 +10:00
parent 3507a749b3
commit c64c6d85e1
3 changed files with 3 additions and 28 deletions
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2
compiler/rustc_codegen_llvm/src/builder.rs
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@@ -1453,7 +1453,7 @@ impl<'a, 'll, 'tcx> BuilderMethods<'a, 'tcx> for Builder<'a, 'll, 'tcx> {
instance: Option<Instance<'tcx>>,
) {
let call = self.call(llty, fn_attrs, Some(fn_abi), llfn, args, funclet, instance);
llvm::LLVMRustSetTailCallKind(call, llvm::TailCallKind::MustTail);
llvm::LLVMSetTailCallKind(call, llvm::TailCallKind::MustTail);
match &fn_abi.ret.mode {
PassMode::Ignore | PassMode::Indirect { .. } => self.ret_void(),

3
compiler/rustc_codegen_llvm/src/llvm/ffi.rs
View File

@@ -97,6 +97,7 @@ pub(crate) enum ModuleFlagMergeBehavior {
// Consts for the LLVM CallConv type, pre-cast to usize.
/// Must match the layout of `LLVMTailCallKind`.
#[derive(Copy, Clone, PartialEq, Debug)]
#[repr(C)]
#[allow(dead_code)]
@@ -1197,7 +1198,7 @@ unsafe extern "C" {
pub(crate) safe fn LLVMIsGlobalConstant(GlobalVar: &Value) -> Bool;
pub(crate) safe fn LLVMSetGlobalConstant(GlobalVar: &Value, IsConstant: Bool);
pub(crate) safe fn LLVMSetTailCall(CallInst: &Value, IsTailCall: Bool);
pub(crate) safe fn LLVMRustSetTailCallKind(CallInst: &Value, Kind: TailCallKind);
pub(crate) safe fn LLVMSetTailCallKind(CallInst: &Value, kind: TailCallKind);
// Operations on attributes
pub(crate) fn LLVMCreateStringAttribute(