Move {widening, carrying}_mul to an intrinsic with fallback MIR

Including implementing it for `u128`, so it can be defined in `uint_impl!`. This way it works for all backends, including CTFE.
2024-11-29 21:32:03 -08:00 · 2024-11-29 21:32:03 -08:00 · 2c0c9123fc
commit 2c0c9123fc
parent 78af7da26d
9 changed files with 322 additions and 135 deletions
--- a/compiler/rustc_span/src/symbol.rs
+++ b/compiler/rustc_span/src/symbol.rs
@ -555,6 +555,7 @@ symbols! {
        call_ref_future,
        caller_location,
        capture_disjoint_fields,
+        carrying_mul_add,
        catch_unwind,
        cause,
        cdylib,