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Rollup merge of #136374 - saethlin:enzyme-linkage, r=oli-obk

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Add link attribute for Enzyme's LLVMRust FFI

Since https://github.com/rust-lang/rust/pull/133429 landed, the compiler doesn't build with `-Zcross-crate-inline-threshold=always`. I don't expect anyone else to test or fix issues with that goofy configuration, so I'm fixing it.

This PR adds a link attribute just like https://github.com/rust-lang/rust/pull/118142 for all the new LLVMRust functions. They were actually added in https://github.com/rust-lang/rust/pull/130060 but weren't used until just now.
This commit is contained in:
Matthias Krüger 2025-02-01 16:41:05 +01:00 • committed by GitHub
commit 2a82ebdcb7
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1 changed files with 7 additions and 2 deletions
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9
compiler/rustc_codegen_llvm/src/llvm/enzyme_ffi.rs
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@ -4,6 +4,8 @@ use libc::{c_char, c_uint};
use super::ffi::{BasicBlock, Metadata, Module, Type, Value};
use crate::llvm::Bool;
#[link(name = "llvm-wrapper", kind = "static")]
extern "C" {
// Enzyme
pub fn LLVMRustHasMetadata(I: &Value, KindID: c_uint) -> bool;
@ -12,10 +14,13 @@ extern "C" {
pub fn LLVMRustDIGetInstMetadata(I: &Value) -> Option<&Metadata>;
pub fn LLVMRustEraseInstFromParent(V: &Value);
pub fn LLVMRustGetTerminator<'a>(B: &BasicBlock) -> &'a Value;
pub fn LLVMRustVerifyFunction(V: &Value, action: LLVMRustVerifierFailureAction) -> Bool;
}
extern "C" {
// Enzyme
pub fn LLVMDumpModule(M: &Module);
pub fn LLVMDumpValue(V: &Value);
pub fn LLVMRustVerifyFunction(V: &Value, action: LLVMRustVerifierFailureAction) -> Bool;
pub fn LLVMGetFunctionCallConv(F: &Value) -> c_uint;
pub fn LLVMGetReturnType(T: &Type) -> &Type;
pub fn LLVMGetParams(Fnc: &Value, parms: *mut &Value);