Rollup merge of #60003 - petrhosek:llvm-lto-lld, r=cramertj
Rollup merge of #60003 - petrhosek:llvm-lto-lld, r=cramertj

LLD is not supported on Darwin

Don't enable LLD when LTO is enabled on Darwin.

graydon/rust,graydon/rust,aidancully/rust,aidancully/rust,aidancully/rust,aidancully/rust,aidancully/rust,graydon/rust,graydon/rust,aidancully/rust,graydon/rust,graydon/rust