20dce9d9b8
Simplify implementation of Rust intrinsics by using type parameters in the cache The current implementation of intrinsics have a lot of duplication to handle different overloads of overloaded LLVM intrinsic. This PR uses the **base name and the type parameters** in the cache instead of the full, overloaded name. This has the benefit that `call_intrinsic` doesn't need to provide the full name, rather the type parameters (which is most of the time more available). This uses `LLVMIntrinsicCopyOverloadedName2` to get the overloaded name from the base name and the type parameters, and only uses it to declare the function. (originally was part of rust-lang/rust#140763, split off later) `@rustbot` label A-codegen A-LLVM r? codegen
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