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Auto merge of #121728 - tgross35:f16-f128-step1-ty-updates, r=compiler-errors

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Add stubs in IR and ABI for `f16` and `f128`

This is the very first step toward the changes in https://github.com/rust-lang/rust/pull/114607 and the [`f16` and `f128` RFC](https://rust-lang.github.io/rfcs/3453-f16-and-f128.html). It adds the types to `rustc_type_ir::FloatTy` and `rustc_abi::Primitive`, and just propagates those out as `unimplemented!` stubs where necessary.

These types do not parse yet so there is no feature gate, and it should be okay to use `unimplemented!`.

The next steps will probably be AST support with parsing and the feature gate.

r? `@compiler-errors`
cc `@Nilstrieb` suggested breaking the PR up in https://github.com/rust-lang/rust/pull/120645#issuecomment-1925900572
This commit is contained in:
bors 2024-03-01 03:36:11 +00:00
commit 6cbf0926d5
37 changed files with 233 additions and 14 deletions
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2
compiler/rustc_lint/src/types.rs
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@ -561,8 +561,10 @@ fn lint_literal<'tcx>(
ty::Float(t) => {
let is_infinite = match lit.node {
ast::LitKind::Float(v, _) => match t {
ty::FloatTy::F16 => unimplemented!("f16_f128"),
ty::FloatTy::F32 => v.as_str().parse().map(f32::is_infinite),
ty::FloatTy::F64 => v.as_str().parse().map(f64::is_infinite),
ty::FloatTy::F128 => unimplemented!("f16_f128"),
},
_ => bug!(),
};