Add "algebraic" versions of the fast-math intrinsics

compiler/rustc_span/src/symbol.rs

@@ -764,8 +764,10 @@ symbols! {
         f64_nan,
         fabsf32,
         fabsf64,
+        fadd_algebraic,
         fadd_fast,
         fake_variadic,
+        fdiv_algebraic,
         fdiv_fast,
         feature,
         fence,
@@ -785,6 +787,7 @@ symbols! {
         fmaf32,
         fmaf64,
         fmt,
+        fmul_algebraic,
         fmul_fast,
         fn_align,
         fn_delegation,
@@ -810,6 +813,7 @@ symbols! {
         format_unsafe_arg,
         freeze,
         freg,
+        frem_algebraic,
         frem_fast,
         from,
         from_desugaring,
@@ -823,6 +827,7 @@ symbols! {
         from_usize,
         from_yeet,
         fs_create_dir,
+        fsub_algebraic,
         fsub_fast,
         fundamental,
         future,