Auto merge of #142521 - sayantn:simplify-intrinsics, r=nikic,workingjubilee

Use `LLVMIntrinsicGetDeclaration` to completely remove the hardcoded intrinsics list

Follow-up to rust-lang/rust#142259

This also needs a rustc-perf run, because `Intrinsic::getType` can be expensive

`@rustbot` label A-LLVM A-codegen T-compiler
r? `@workingjubilee`
cc `@nikic`

1 files changed, 2 insertions, 6 deletions

diff --git a/compiler/rustc_codegen_llvm/src/llvm/ffi.rs b/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
index 59c61db5fcd..91ada856d59 100644
--- a/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
+++ b/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
@@ -1078,8 +1078,6 @@ unsafe extern "C" {
 
     // Operations on other types
     pub(crate) fn LLVMVoidTypeInContext(C: &Context) -> &Type;
-    pub(crate) fn LLVMTokenTypeInContext(C: &Context) -> &Type;
-    pub(crate) fn LLVMMetadataTypeInContext(C: &Context) -> &Type;
 
     // Operations on all values
     pub(crate) fn LLVMTypeOf(Val: &Value) -> &Type;
@@ -1198,14 +1196,12 @@ unsafe extern "C" {
 
     // Operations about llvm intrinsics
     pub(crate) fn LLVMLookupIntrinsicID(Name: *const c_char, NameLen: size_t) -> c_uint;
-    pub(crate) fn LLVMIntrinsicIsOverloaded(ID: NonZero<c_uint>) -> Bool;
-    pub(crate) fn LLVMIntrinsicCopyOverloadedName2<'a>(
+    pub(crate) fn LLVMGetIntrinsicDeclaration<'a>(
         Mod: &'a Module,
         ID: NonZero<c_uint>,
         ParamTypes: *const &'a Type,
         ParamCount: size_t,
-        NameLength: *mut size_t,
-    ) -> *mut c_char;
+    ) -> &'a Value;
 
     // Operations on parameters
     pub(crate) fn LLVMIsAArgument(Val: &Value) -> Option<&Value>;