Remove dead function LLVMRustLinkInParsedExternalBitcode()

Refs #46437

Author: dotdash

src/librustc_llvm/ffi.rs

@@ -1607,7 +1607,6 @@ extern "C" {
     pub fn LLVMRustSetNormalizedTarget(M: ModuleRef, triple: *const c_char);
     pub fn LLVMRustAddAlwaysInlinePass(P: PassManagerBuilderRef, AddLifetimes: bool);
     pub fn LLVMRustLinkInExternalBitcode(M: ModuleRef, bc: *const c_char, len: size_t) -> bool;
-    pub fn LLVMRustLinkInParsedExternalBitcode(M: ModuleRef, M: ModuleRef) -> bool;
     pub fn LLVMRustRunRestrictionPass(M: ModuleRef, syms: *const *const c_char, len: size_t);
     pub fn LLVMRustMarkAllFunctionsNounwind(M: ModuleRef);
 

src/rustllvm/RustWrapper.cpp

@@ -927,23 +927,6 @@ extern "C" bool LLVMRustLinkInExternalBitcode(LLVMModuleRef DstRef, char *BC,
   return true;
 }
 
-extern "C" bool LLVMRustLinkInParsedExternalBitcode(
-    LLVMModuleRef DstRef, LLVMModuleRef SrcRef) {
-#if LLVM_VERSION_GE(4, 0)
-  Module *Dst = unwrap(DstRef);
-  std::unique_ptr<Module> Src(unwrap(SrcRef));
-
-  if (Linker::linkModules(*Dst, std::move(Src))) {
-    LLVMRustSetLastError("failed to link modules");
-    return false;
-  }
-  return true;
-#else
-  LLVMRustSetLastError("can't link parsed modules on this LLVM");
-  return false;
-#endif
-}
-
 // Note that the two following functions look quite similar to the
 // LLVMGetSectionName function. Sadly, it appears that this function only
 // returns a char* pointer, which isn't guaranteed to be null-terminated. The