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Add f16 and f128 support

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beetrees 2024-07-10 09:38:47 +01:00
parent da27b89ca5
commit d5db933f9d
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28 changed files with 384 additions and 73 deletions
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26
crates/hir-ty/src/display.rs
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@ -28,6 +28,10 @@ use hir_expand::name::Name;
use intern::{Internable, Interned};
use itertools::Itertools;
use la_arena::ArenaMap;
use rustc_apfloat::{
ieee::{Half as f16, Quad as f128},
Float,
};
use smallvec::SmallVec;
use stdx::{never, IsNoneOr};
use triomphe::Arc;
@ -545,6 +549,17 @@ fn render_const_scalar(
write!(f, "{it}")
}
Scalar::Float(fl) => match fl {
chalk_ir::FloatTy::F16 => {
// FIXME(#17451): Replace with builtins once they are stabilised.
let it = f16::from_bits(u16::from_le_bytes(b.try_into().unwrap()).into());
let s = it.to_string();
if s.strip_prefix('-').unwrap_or(&s).chars().all(|c| c.is_ascii_digit()) {
// Match Rust debug formatting
write!(f, "{s}.0")
} else {
write!(f, "{s}")
}
}
chalk_ir::FloatTy::F32 => {
let it = f32::from_le_bytes(b.try_into().unwrap());
write!(f, "{it:?}")
@ -553,6 +568,17 @@ fn render_const_scalar(
let it = f64::from_le_bytes(b.try_into().unwrap());
write!(f, "{it:?}")
}
chalk_ir::FloatTy::F128 => {
// FIXME(#17451): Replace with builtins once they are stabilised.
let it = f128::from_bits(u128::from_le_bytes(b.try_into().unwrap()));
let s = it.to_string();
if s.strip_prefix('-').unwrap_or(&s).chars().all(|c| c.is_ascii_digit()) {
// Match Rust debug formatting
write!(f, "{s}.0")
} else {
write!(f, "{s}")
}
}
},
},
TyKind::Ref(_, _, t) => match t.kind(Interner) {