Apply dllimport in ThinLTO

Author: Zoxc

compiler/rustc_codegen_llvm/src/consts.rs

@@ -327,8 +327,7 @@ impl<'ll> CodegenCx<'ll, '_> {
                 // ThinLTO can't handle this workaround in all cases, so we don't
                 // emit the attrs. Instead we make them unnecessary by disallowing
                 // dynamic linking when linker plugin based LTO is enabled.
-                !self.tcx.sess.opts.cg.linker_plugin_lto.enabled() &&
-                self.tcx.sess.lto() != Lto::Thin;
+                !self.tcx.sess.opts.cg.linker_plugin_lto.enabled();
 
             // If this assertion triggers, there's something wrong with commandline
             // argument validation.