Deduplicate `IntTy`/`UintTy`/`FloatTy`.

There are identical definitions in `rustc_type_ir` and `rustc_ast`. This
commit removes them and places a single definition in `rustc_ast_ir`.
This requires adding `rust_span` as a dependency of `rustc_ast_ir`, but
means a bunch of silly conversion functions can be removed.

The one annoying wrinkle is that the old version had differences in
their `Debug` impls, e.g. one printed `u32` while the other printed
`U32`. Some compiler error messages rely on the former (yuk), and some
clippy output depends on the latter. So the commit also changes clippy
to not rely on `Debug` and just implement what it needs itself.

1 files changed, 3 insertions, 3 deletions

diff --git a/compiler/rustc_ast/src/util/literal.rs b/compiler/rustc_ast/src/util/literal.rs
index 2dfd695d880..e9cf3cf0737 100644
--- a/compiler/rustc_ast/src/util/literal.rs
+++ b/compiler/rustc_ast/src/util/literal.rs
@@ -190,15 +190,15 @@ impl fmt::Display for LitKind {
             LitKind::Int(n, ty) => {
                 write!(f, "{n}")?;
                 match ty {
-                    ast::LitIntType::Unsigned(ty) => write!(f, "{}", ty.name())?,
-                    ast::LitIntType::Signed(ty) => write!(f, "{}", ty.name())?,
+                    ast::LitIntType::Unsigned(ty) => write!(f, "{}", ty.name_str())?,
+                    ast::LitIntType::Signed(ty) => write!(f, "{}", ty.name_str())?,
                     ast::LitIntType::Unsuffixed => {}
                 }
             }
             LitKind::Float(symbol, ty) => {
                 write!(f, "{symbol}")?;
                 match ty {
-                    ast::LitFloatType::Suffixed(ty) => write!(f, "{}", ty.name())?,
+                    ast::LitFloatType::Suffixed(ty) => write!(f, "{}", ty.name_str())?,
                     ast::LitFloatType::Unsuffixed => {}
                 }
             }